WorldWideScience

Sample records for toxicologie nucleaire environnementale

  1. Nuclear toxicology. To detect, to clean; Toxicologie nucleaire. Dectecter, depolluer

    Energy Technology Data Exchange (ETDEWEB)

    Garcia, D. [CEA Cadarache (IBEB), Lab. de Bioenergetique Cellulaire, 13 - Saint-Paul-lez-Durance (France); Lecomte-Pradines, C. [Institut de Radioprotection et de Surete Nucleaire (IRSN/DEI), Lab. de Radioecologie et d' Ecotoxicologie, 13 - Saint-Paul-lez-Durance (France); Quemeneur, E. [CEA Valrho (IBEB), Lab. de Radioecologie et d' Ecotoxicologie Nucleaire, 30 - Marcoule (France); Petitot, F. [CEA Centre de Pierrelatte, Institut de Radioprotection et de Surete Nucleaire, (IRSN-DRPH-SRBE), Lab. de Radiotoxicologie Experimentale, 26 (France); Souidi, M.; Bertho, J.M. [CEA Fontenay-aux-Roses, Institut de Radioprotection et de Surete Nucleaire, (IRSN-DRPH-SRBE), Lab. de Radiotoxicologie Experimentale 92 (France); Junot, Ch. [CEA Saclay (iBiTec-S/SPI), Lab. d' Etude du Metabolisme des Medicaments, 91 - Gif-sur-Yvette (France); Malard, V. [CEA Valrho (IBEB-SBTN), Lab. de Biochimie des Systemes Perturbes, 30 - Marcoule (France); Berthomieu, C.; Chapon, V. [CEA Cadarache (IBEB), Lab. des Interactions Proteine Metal, 13 - Saint-Paul-lez-Durance (France); Gilbin, R.; Misson-Pons, J. [CEA Cadarache, Institut de Radioprotection et de Surete Nucleaire (IRSN/DEI), Lab. de Radioecologie et d' Ecotoxicologie, 13 - Saint-Paul-lez-Durance (France); Vavasseur, A. [CEA Cadarache (IBEB), Lab. des Echanges Membranaires et Signalisation, 13 - Saint-Paul-lez-Durance (France); Richaud, P. [CEA Cadarache (IBEB), Lab. de Bioenergetique et Biotechnologie des Basteries et Microalgues, 13 - Saint-Paul-lez-Durance (France); Ansoborlo, E.; Taran, F.; Benech, H.; Fattal, E.; Tsapis, N.; Menetrier, F.; Deverre, J.R.; Burgada, R. [CEA Marcoule (DEN/DRCP/CETAMA), 30 (France)

    2009-01-15

    This file shows two complementary parts: one aiming to a better detection of exposure for man and environment and and other one relative to the treatments to be used when there is a contamination. The development of biological captors is a research axis that could be very useful for nuclear toxicologists that wish to dispose of perceptible measurement tools. In the same idea biological markers could be an important help to determine the toxic quantity in organism in case of internal radioactive contamination. About remedial actions, bacteria are able to reduce, to oxide, to capture pollutants and then it is not insane to use them in efficient and low cost remediation for waters or contaminated lands, especially by trace metals or radioactive compounds. Next to them, plants can offer the same service it is the case for sunflower able to treat water loaded in uranium. This file ends with a review of the different treatments known nowadays as therapies for contamination by radioisotopes used in nuclear industry. (N.C.)

  2. Symposium Toxicologie naar 2000 : We weten meer dan vroeger, maar nog erg weinig

    NARCIS (Netherlands)

    Pennekamp, E.

    1990-01-01

    Verslag van het symposium "Toxicologie naar 2000". Aan de orde kwamen o.a. : toxicologie als wetenschap in de toekomst, aanpak bij het minimaliseren van onzekerheden bij het schatten van toxicologische risico's, schijnzekerheden en rigiditeit bij bestaande testsystemen, en noodzaak voor het

  3. Dynamique environnementale sur le versant occidental de la riviere ...

    African Journals Online (AJOL)

    Mèdokpokonou). The use of chemicals in agriculture and the cultural technique are the important problems of deterioration of the ecosystem. La dynamique environnementale du versant occidental de la rivière Sô est examinée. L'objectif est de ...

  4. Nuclear toxicology file: impact of uranium on the vertebrae reproduction; Dossier toxicologie nucleaire: impact de l'uranium sur la reproduction des vertebres

    Energy Technology Data Exchange (ETDEWEB)

    Barillet, S.; Carriere, M. [CEA Saclay, IRAMIS, Lab. Pierre Sue, Groupe Toxicologie Humaine et Environnementale-CNRS, 91 - Gif sur Yvette (France)

    2008-09-15

    Studies led on rats showed an achievement on the reproductive system. The effects on the progeny were also studied with some depleted uranium.The depleted uranium can cross the placental barrier and to affect the development of embryos to the rat. Teratogen effects were also observed. For the strongest tested dose (50 mg / kg /day during 9 days is approximately 20 % of the lethal dose), an embryonic mortality was observed. Below this dose, the foetal toxicity was resulted by a decrease of the weight and the size of the foetus associated with malformations and disturbances in the different stages of development. For high doses (25 mg / kg / day) the number of alive fetuses, the growth and the development as well as their survival were considerably affected. Concerning the uranium effects on the foetal testicle, the first results seem to indicate a particular sensitivity of the human male gonad with regard to the foetal testicle of mouse. The effects on the follicle genesis in vivo and on the oocytes in vitro have been studied. The modification of the rhythm of the oocyte meiosis observed in vitro, could occur in pre-ovulation follicles and lead to the ovulation of oocytes capable of being fertilized but incapable of normal embryonic development. A particular attention must be thus worn to the girls and to the women susceptible to be exposed to not negligible quantities of uranium. (N.C.)

  5. Gouvernance environnementale locale et comportements économiques

    Directory of Open Access Journals (Sweden)

    Christophe Beaurain

    2004-02-01

    Full Text Available La notion de gouvernance est mobilisée de manière croissante aujourd’hui pour évoquer de nouvelles formes de coopérations entre acteurs de la vie économique et sociale. Appliquée aux questions environnementales, la gouvernance pose à la fois la question de la maîtrise du temps par les acteurs et celle du territoire d’application des décisions prises. On peut donc considérer qu’elle engage un renouvellement de l’articulation entre le temps et l’espace, que doit prendre en compte l’analyse des choix économiques dans ce domaine. L’exemple du bassin d’emploi dunkerquois montre que cette articulation est au cœur d’une participation des entreprises à la gouvernance environnementale.The concept of governance is more and more raised to conjure up new ways of cooperation between actors of the economic and social life. Applied to environmental matters, governance ask both the question of mastery of the time and the one of the territory’s application for taken decisions. We can consider that it engage a renewal of the joint between time and space, that the analysis of economic choices had to take into account. The example of “Dunkerque” show that this joint is the heart of firm’s collaboration in environmental governance.

  6. TIC et politiques environnementales : l’épreuve de l’effet rebond

    Directory of Open Access Journals (Sweden)

    Cédric Gossart

    2015-06-01

    Full Text Available Cet article vise à clarifier le débat de l’utilisation des TIC environnementales par les territoires, afin de mettre en évidence les limites des politiques publiques environnementales qui reposent essentiellement sur l’outil technologique. Nous proposons tout d’abord une classification des TIC environnementales, et expliquons ensuite les limites d’une politique environnementale territoriale essentiellement axée sur ces technologies. Nous suggérons enfin qu’une politique territoriale ambitieuse d’éducation au développement durable et de mesure des flux territoriaux de matière et d’énergie sont deux moyens de dépasser ces limites.

  7. Organisation innovatrice et responsabilité sociale et environnementale

    OpenAIRE

    Pesqueux, Yvon

    2010-01-01

    La question se pose à la fois du point de vue de l'organisation innovatrice (considérée ici comme un phénomène) et de celui de la responsabilité sociale et environnementale (considérée ici comme « le » motif de l'innovation) qui a fort heureusement été libérée du « E » (pour « entreprise ») qui est généralement accolé. Il serait autrement impossible de lier les deux points de vue car c'est la RSE (responsabilité sociale de l'entreprise) qui absorberait le tout.

  8. Le contrôle de gestion environnementale d'une entreprise

    OpenAIRE

    Marquet-Pondeville, Sophie

    2001-01-01

    Dans cette recherche, nous étudions comment s’opère le contrôle de gestion environnementale. Cette problématique est abordée dans une perspective contingente et nous proposons un modèle théorique qui met en évidence l’impact de certaines variables sur les systèmes de contrôle de la gestion environnementale. Certains liens présents dans ce modèle sont discutés à travers une étude de cas.

  9. Background and analysis of R and D needs in the field of nuclear toxicology; Contexte et analyse des besoins en R et D dans le domaine de la toxicologie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Quemeneur, E. [CEA Marcoule, Dir. des Sciences du Vivant, 30 (France); Menager, M.Th. [CEA Fontenay-aux-Roses, Dir. des Sciences du Vivant, 92 (France); Forestier, C. [CEA Cadarache, Dir. des Sciences du Vivant, 13 - Saint-Paul-lez-Durance (France); Ansoborlo, E. [CEA Marcoule, Dir. de l' Energie Nucleaire, 30 (France)

    2008-07-01

    The CEA has confirmed his interest in late 2007 for a continuation of the coordinated effort of research in Nuclear Toxicology. Our working group aimed at developing proposals to organize internal priorities in the CEA, as well as supporting a dynamic and open ambition in terms of partnership. This document provides the main elements of the analysis of the context and needs, a strategic proposal and the arrangements planed for the next five years. The proposed programme covers the field of cellular and molecular toxicology applied to the human biology and the environment. Seeking to achieve the right balance between academic and applied research, it addresses some fundamental issues, in large part identified in previous phases (speciation of mobile forms, transport in the biosphere, biochemical targets, and mechanisms of action at different levels of living organisms) and will aim at assessing the potential of novel bio-processes for the intervention in accidental situation. Basically multi-disciplinary, this programme will require to re-launch, and amplify, the coordinated efforts of skills from different poles of the CEA for which internal resources could cover part of the priority needs. However, it seems clear that the establishment of strong relationships with academic partners and industry is required to achieve the expectations raised by the multiple thematic scopes. In the current context of toxicology in France, we chose to approach the field on the basis of a road-map rather than as a unique project. This modular approach seems to be the appropriate way to take into account the concerns of various stakeholders in this vast programme as well as the necessary reflection on the commitment of resources. Our analysis of the competitive environment of work and available forces led to concentrate our efforts on a few chemical elements or radionuclides of specific interest in the nuclear field (tritium, cobalt, iodine, cesium, uranium and plutonium) and to focus on studying their mechanisms of toxicity. This focus allows us to position differently compared to other national networks being developed to address the many issues raised by the toxicology: Grenelle conference on Environment, REACH Directive, the emerging risks stemming from technological research or the pharmaceutical industry. However, in our analysis, R and D on environmental and health impacts of nuclear activities must be part of a landscape in which CEA and IRSN are both complementary in their approaches and collaborate in the selection of biological models and experimental concepts. It is obvious that the effort provided for methodological research should lead, ultimately, to the establishment of standards extrapolated in the process of risk assessment. This document is also providing an inventory of the various capacity of CEA which can be directly mobilized in analytical chemistry, biological experimentation and radiochemistry, and an inventory of potential partnership network nationally and internationally. The approach by calling for projects (CFP) is the consensual way to ensure the compromise between scientific excellence and steering methods. An organization for the governance and management of a programme of national magnitude is proposed. This document was clearly not intended to write projects in place of scientists who will be invited to develop, in due course, proposals for action on a competitive basis through the CFP. In the event of a launch as early as 2008, this analysis has identified a list of priority topics related to the 6 radionuclides, such as: 1/ speciation, bioavailability and modelization; 2/ concentrations, doses and low doses; 3/ biogeochemical fluxes; 4/ membrane transporters; 5/ molecular targets and carriers; 6/ damages related to exposure and 7/ development of bio-depollution and decorporation processes. (authors)

  10. L'européanisation de la politique environnementale dans les années 1970

    DEFF Research Database (Denmark)

    Meyer, Jan-Henrik

    2012-01-01

    the European impact on member state legislation. Elaboré à l'échelle internationale, le concept politique d'environnement offre l'exemple rare du transfert d'un domaine d'action politique vers les Communautés européennes depuis d'autres internnationales. Cet article explore le processus complexe d......' de la politique environnementale, comme un transfert à directions multiples d'un concept forgé dans les années 1970....

  11. La Spectroscopie laser appliquee a la physique nucleaire

    CERN Document Server

    Le Blanc, F

    2001-01-01

    l'etude de la forme du noyau atomique est un sujet fondamental puisqu'elle constitue un excellent laboratoire pour tester et valider les differents modeles nucleaires.La spectroscopie atomique et plus particulierement la spectroscopie laser est un moyen precis et inhabituel pour caracteriser des observables liees a la forme du noyau.

  12. Siloette, Siloe mock-up; Siloette, modele nucleaire de siloe

    Energy Technology Data Exchange (ETDEWEB)

    Delcroix, V.; Jeanne, G.; Mitault, G.; Schulhof, P. [Commissariat a l' Energie Atomique, Grenoble (France). Centre d' Etudes Nucleaires

    1964-07-01

    Siloette is the Siloe mock-up. The main installations are described: various tanks, building, auxiliaries, control systems... Precis ions are given about precautions taken for using spent fuel elements. (authors) [French] Siloette est le modele nucleaire de SILOE. On decrit ses diverses installations: bassins, batiments, auxiliaires, controle... Des precisions sont donnees sur les precautions prises pour y utiliser des elements uses. (auteurs)

  13. La responsabilité sociale et environnementale des entreprises : mirage ou virage ?

    OpenAIRE

    Patricia Crifo; Vanina Forget

    2013-01-01

    Cet article examine les déterminants économiques des pratiques de responsabilité sociale et environnementale des entreprises (RSE), à savoir l'intégration volontaire de facteurs environnementaux, sociaux et de gouvernance dans la stratégie des entreprises. Nous présentons la littérature théorique et empirique dans un cadre unifié qui explique le développement de ces pratiques de RSE en se fondant sur trois catégories d'imperfections de marché : l'existence d'externalités et biens publics ; la...

  14. Quelle place pour le citoyen dans les processus de qualification environnementale des entreprises ?

    Directory of Open Access Journals (Sweden)

    Nathalie Semal

    2006-01-01

    Full Text Available Le développement durable invite à intégrer aux modèles de raisonnement et d’action économiques la négociation entre parties intéressées et compétentes. Cette approche trouve sa traduction dans le champ économique sous la forme de la « théorie des parties prenantes », cristallisé notamment dans des outils comme la norme ISO 14001. Mais les modalités pratiques de sa mise en oeuvre ne permettent pas une intégration équilibrée des différents points de vue en présence. Le dialogue des parties prenantes qui vise à construire la « qualité environnementale » des entreprises se négocie essentiellement au sein de l’espace marchand. Le potentiel d’intégration du droit de négociation des parties prenantes paraît faible en l’absence d’un dispositif de veille citoyenne de cette qualité environnementale.Sustainable development aims to integrate stakeholder negotiation into economical reasoning and acting models. The stakeholder theory translates this approach in the economics field. Some tools like ISO 14001 standard crystallise this theory. But the practical ways of its implementation do not allow a balanced integration of the hole range of stakeholders views. Stakeholder dialog, which aims to build a consensus about enterprises “environmental quality”, is mostly negotiated inside the economic space. ISO 14001 standardisation system is not likely to allow stakeholder negotiation rights integration while citizens do not organise an environmental quality watching over network.

  15. French regulations in the nuclear field and standards related to nuclear pressure equipment; Reglementation francaise dans le domaine nucleaire et normes relatives aux equipements sous pression nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Mourlon, S.; Limousin, S.; Van Hoecke, J.C. [Autorite de surete nucleaire 6, place du Colonel Bourgoin 75012 Paris (France)

    2007-07-01

    French regulations on nuclear pressure equipment have been updated with the December 12, 2005 Order related to Nuclear Pressure Equipment, so-called 'ESPN Order'. This Order is at the junction of regulations covering safety on the one hand and pressure equipment on the other hand. As regards manufacturing, the ESPN Order extends to nuclear pressure equipment the approach and essential requirements of the European Pressure Equipment Directive (PED - transposed in France by the December 13, 1999 Decree) while adding specific nuclear and radiation safety requirements. For in-service inspection, it sets additional provisions to those of the December 13, 1999 Decree so that the nuclear and radiation safety requirements applying in nuclear facilities are also taken into account for those equipment. The specific case of PWR main primary and secondary systems is covered by the November 10, 1999 Order. The ESPN Order leaves a major part to industrial codes and standards. Its publication makes it necessary to check that the codes used for nuclear pressure equipment comply with the new requirements and may induce modifications of the codes. Furthermore, as the market for operators of nuclear facilities and manufacturers of mechanical equipment is becoming global, these evolutions should be considered in a worldwide context. Last, the Nuclear Transparency and Security Act of June 13, 2006 - which created the Nuclear safety authority (ASN) with competence over nuclear and radiation safety, covering specifically nuclear pressure equipment - will induce further amendments of regulations. (authors) [French] La reglementation francaise en matiere d equipements sous pression nucleaires a ete refondee avec la parution de l arrete du 12 decembre 2005 relatif aux equipements sous pression nucleaires, dit 'arrete ESPN'. Ce texte se situe a l intersection des reglementations en matiere de surete, d une part, et d equipements sous pression, d autre part. En matiere de

  16. Treatment of effluent at the Saclay Centre d'Etudes Nucleaires (1960); Le traitement des effluents du Centre d'Etudes Nucleaires de Saclay (1960)

    Energy Technology Data Exchange (ETDEWEB)

    Wormser, G. [Commissariat a l' Energie Atomique, Saclay (France).Centre d' Etudes Nucleaires

    1960-07-01

    The Centre d'Etudes Nucleaires at Saclay possesses several installations from which liquid radioactive effluent is rejected, and it has thus been found necessary to construct a station for the purification of radioactive liquids and to settle various chemical, analytical and technological problems. This report describes, in the following order: - the disposal possibilities at the Centre d'Etudes Nucleaires, Saclay, - the effluents produced at the centre, - the set-up for collecting effluent, - treatment of the effluent, - results of these treatments. (author) [French] La presence, au Centre d'Etudes Nucleaires de Saclay, de plusieurs installations susceptibles de rejeter des effluents liquides radioactifs a necessite la construction d'une station d'epuration d'eaux radioactives et la mise au point de differents problemes chimiques, analytiques et technologiques. Dans ce rapport, nous exposerons successivement: - les possibilites de rejet du Centre d'Etudes Nucleaires de Saclay, - les effluents du centre, - le dispositif de collecte des effluents, - le traitement de ces effluents, - les resultats de ces traitements. (auteur)

  17. Radiotoxicity, dose and nuclear alchemy; Radiotoxiciteit, dosis en nucleaire alchemie

    Energy Technology Data Exchange (ETDEWEB)

    Schram, R. [Nuclear Research and Consultancy Group NRG, Petten (Netherlands)

    2006-07-01

    An outline is given of the nuclear fuel cycle and related products, focusing on the radiotoxicity and radioactive waste dose. Also, it is explained how those subjects form the basis of research on transmutation and recycling of radioactive waste. Finally, attention will be paid to nuclear alchemy, i.e. the steps to be taken for transmutation and recycling, based on current developments in research at NRG. [Dutch] In dit artikel zal een toelichting worden gegeven op de splijtstofcyclus en de producten die daarbij vrijkomen. Hierbij zal worden ingegaan op de radiotoxiciteit en dosis van het radioactief anal. Tevens zal worden uitgelegd hoe deze begrippen de basis vormen voor keuzes binnen het onderzoek naar transmutatie en recycling van radioactief afval. Ook zal de nucleaire alchemie, de benodigde stappen voor transmutatie en recycling, worden behandeld aan de hand van de actuele ontwikkelingen in het onderzoek zoals onder meer uitgevoerd bij NRG.

  18. Treatment of effluent at the Saclay Centre d'Etudes Nucleaires (1960)

    International Nuclear Information System (INIS)

    Wormser, G.

    1960-01-01

    The Centre d'Etudes Nucleaires at Saclay possesses several installations from which liquid radioactive effluent is rejected, and it has thus been found necessary to construct a station for the purification of radioactive liquids and to settle various chemical, analytical and technological problems. This report describes, in the following order: - the disposal possibilities at the Centre d'Etudes Nucleaires, Saclay, - the effluents produced at the centre, - the set-up for collecting effluent, - treatment of the effluent, - results of these treatments. (author) [fr

  19. Démarches environnementales volontaires, conflit d’usage et proximité

    Directory of Open Access Journals (Sweden)

    Marie-Claude Bélis-Bergouignan

    2010-11-01

    Full Text Available L’article propose une analyse en termes de proximité géographique et organisée de la contribution des Démarches Environnementales Volontaires (DEV à la résolution du conflit d’usage diffus sur l’eau dans la viticulture et l’arboriculture fruitière. Dans une première partie, les DEV seront présentées comme une réponse spécifique des producteurs à ce type de conflit, la seconde partie se concentrant sur une lecture des DEV en termes de proximité. Une enquête réalisée auprès des producteurs inscrits en agriculture raisonnée ou biologique permet de montrer que la proximité organisée ne peut être porteuse à elle seule de solutions aux divergences d’intérêts entre acteurs.This paper analyses, terms of geographical and organized proximity, the contribution of Voluntary Environmental Approaches (VEA to the resolution of diffuse conflicting water uses in vine growing and fruit-bearing arboriculture. In a first part, we show that VEAs are a specific producer’s response to this kind of conflicts, the second part being centred on an analysis of VEAs in terms of proximity. An investigation towards producers engaged in integrated or organic farming shows that organized proximity alone is not able to bear solutions to divergences of interests between actors.

  20. Natural uranium toxicology - evaluation of internal contamination in man; Toxicologie de l'uranium naturel - essai d'evaluation de la contamination interne chez l'homme

    Energy Technology Data Exchange (ETDEWEB)

    Chalabreysse, J. [Commissariat a l' Energie Atomique, Pierrelatte (France). Centre d' Etudes Nucleaires

    1968-07-01

    After reminding the physical and chemical properties of natural uranium which might affect its toxicology, a comprehensive investigation upon natural uranium metabolism and toxicity and after applying occupational exposure standards to this particular poison, it has been determined, from accident reports and human experience reported in the related literature, a series of formulae obtained by theoretical mathematical development giving principles for internal contamination monitoring and disclosure by determining uranium in the urine of occupationally exposed individuals. An assay is performed to determine individual internal contamination according to the various contamination cases. The outlined purposes, mainly practical, required some options and extrapolations. The proposed formula allows a preliminary approach and also to determine shortly a contamination extent or to discuss the systematical urinalysis results as compared with individual radio-toxicology monitoring professional standards. (author) [French] Apres le rappel des caracteristiques physiques et des proprietes chimiques de l'uranium naturel pouvant avoir une influence sur sa toxicologie, l'etude detaillee de son metabolisme et de sa toxicite, puis l'application des normes professionnelles d'exposition au cas particulier de ce toxique, il est etabli, a partir des comptes rendus d'accidents et de l'experimentation humaine rapportes dans la litterature, une serie de formules obtenues par developpement mathematique theorique qui posent les principes de la surveillance et de la mise en evidence de la contamination interne par la recherche et le dosage de l'uranium dans les urines d'individus professionnellement exposes. Un essai d'evaluation de la contamination interne individuelle suivant les differents cas de contamination est effectue. Le formulaire propose permet de faire une premiere approximation et d'apprecier rapidement l'importance d

  1. Évolution des politiques environnementales et tourisme de montagne au Népal

    Directory of Open Access Journals (Sweden)

    Isabelle Sacareau

    2009-12-01

    Full Text Available Le développement du trekking au Népal a suscité des inquiétudes qui ont abouti à la création d’aires protégées sur la foi d’un scénario de crise environnementale dont les touristes et les paysans étaient jugés responsables. Devant les conflits entre la conservation et les nécessités de développement des régions concernées, la gouvernance des aires protégées a évolué dans le sens d’une meilleure prise en compte des sociétés locales. Pour autant les mesures prises ne font qu’accompagner et diriger des dynamiques touristiques plus anciennes qui s’exercent à des échelles plus vastes. Le trekking constitue ainsi un système touristique très largement aux mains des sociétés montagnardes du pays qui a permis l’amélioration de leurs conditions de vie tout en limitant ses impacts environnementaux. En ce sens le trekking répond assez largement aux principes du développement durable.Against a backdrop of environmental crisis, attributed to the impact of tourism and the practices of rural populations, Nepal has created protected areas with a view to preserving the Himalayan environment and promoting sustainable tourism in the regions concerned. Given the conflicts between conservation needs and development needs, local communities are now being given a bigger role in the governance of these protected areas. Yet the measures being taken simply accompany and guide well-established tourism dynamics that operate on a much greater scale. Trekking is thus a tourism system largely in the hands of the country’s mountain communities and is an activity that has enabled these communities to improve their living conditions while at the same time limiting environmental impacts. In this sense it is very much in line with the principles of sustainable development.

  2. INDUSTRIE ET ENVIRONNEMENT Les préoccupations environnementales de l’industrie des corps gras

    Directory of Open Access Journals (Sweden)

    Pages Xavier

    2002-09-01

    Full Text Available Les préoccupations environnementales de l’industrie des corps gras sont principalement rythmées par le renforcement des contraintes réglementaires et concernent tous les aspects environnementaux : effluents gazeux et aqueux, déchets, management, énergie. Ces aspects sont inégalement présents dans les différents sous-secteurs de l’industrie des corps gras ; quelques exemples sont présentés. La réduction des émissions de COV (composés organiques volatils et les nuisances olfactives sont une problématique concernant principalement l’activité de trituration, la lipochimie et la fonte de corps gras animaux. Des valeurs limites de consommation de solvant sont maintenant imposées réglementairement en extraction; la prise en compte de problèmes de nuisance olfactive donnent lieu à l’amélioration des procédés de traitement d’air (corps gras animaux ou à leur mise en place progressive (trituration de colza. La gestion des déchets reste une préoccupation essentielle pour l’ensemble de la profession et tout particulièrement pour les secteurs des corps gras animaux et la lipochimie, en raison de la remise en cause des filières d’élimination due au renforcement des contraintes réglementaires, mais aussi en raison des coûts de traitement. Ce poste ne doit pas être négligé par les entreprises : réduction à la source, recherche de filières pérennes, valorisation énergétique ou matière sont des éléments permettant également une réduction significative des coûts. La maîtrise de la consommation d’énergie est un élément important, voir stratégique, notamment dans le secteur de la trituration des graines oléagineuses. Des actions de sensibilisation permettent de poursuivre également l’effort auprès des PME, actuellement moins impliquées. En matière de traitement d’eau, des avancées notables sont observées depuis une décennie ; néanmoins certaines difficultés persistent, notamment dans les

  3. Caracterisation environnementale des emissions atmospheriques d'une source fixe et creation d'un outil de gestion dynamique =

    Science.gov (United States)

    Fournier, Marie-Claude

    Une caracterisation des emissions atmospheriques provenant des sources fixes en operation, alimentees au gaz et a l'huile legere, a ete conduite aux installations visees des sites no.1 et no.2. La caracterisation et les calculs theoriques des emissions atmospheriques aux installations des sites no.1 et no.2 presentent des resultats qui sont en dessous des valeurs reglementaires pour des conditions d'operation normales en periode hivernale et par consequent, a de plus fortes demandes energetiques. Ainsi, pour une demande energetique plus basse, le taux de contaminants dans les emissions atmospheriques pourrait egalement etre en dessous des reglementations municipales et provinciales en vigueur. Dans la perspective d'une nouvelle reglementation provinciale, dont les termes sont discutes depuis 2005, il serait souhaitable que le proprietaire des infrastructures visees participe aux echanges avec le Ministere du Developpement Durable, de l'Environnement et des Parcs (MDDEP) du Quebec. En effet, meme si le principe de droit acquis permettrait d'eviter d'etre assujetti a la nouvelle reglementation, l'application de ce type de principe ne s'inscrit pas dans ceux d'un developpement durable. L'âge avance des installations etudiees implique la planification d'un entretien rigoureux afin d'assurer les conditions optimales de combustion en fonction du type de combustible. Des tests de combustion sur une base reguliere sont donc recommandes. Afin de supporter le processus de suivi et d'evaluation de la performance environnementale des sources fixes, un outil d'aide a la gestion de l'information environnementale a ete developpe. Dans ce contexte, la poursuite du developpement d'un outil d'aide a la gestion de l'information environnementale faciliterait non seulement le travail des personnes affectees aux inventaires annuels mais egalement le processus de communication entre les differents acteurs concernes tant intra- qu'inter-etablissement. Cet outil serait egalement un bon

  4. Éthique environnementale et développement durable : Réflexions sur le Principe Responsabilité de Hans Jonas

    OpenAIRE

    Ferrari, Sylvie

    2010-01-01

    L’objet de cet article vise à étudier le développement durable sous l’angle de l’éthique environnementale. En particulier, on s’interroge sur la nécessité d’introduire dans l’analyse économique une justice d’autolimitation comme préalable à toute répartition des ressources environnementales entre les générations successives. Dans cette perspective, et en considérant les effets à long terme des actions humaines sur la nature, les conditions de mise en œuvre d’une éthique du futur sont analysée...

  5. Décentralisation des ressources forestières et justice environnementale: Analyse des évidences empiriques du Sud-Cameroun

    Directory of Open Access Journals (Sweden)

    Samuel Assembe Mvondo

    2005-06-01

    Full Text Available La justice environnementale est sans doute l’un des objectifs attendus de tout processus de gestion décentralisée des ressources naturelles. Le modèle camerounais de décentralisation des ressources forestières en cours de construction n’échappe pas à cette logique de la quête de l’équité distributive des ressources intra-communautaires. En effet, les dispositions de la législation forestière de 1994, se fondant sur la théorie et les normes multilatérales environnementales, offrent désormais trois types d’opportunités de gestion locales aux communautés: forêts communales, forêts communautaires, redevance forestière. Mais, l’examen et l’analyse empirique de ce modèle camerounais de transfert des pouvoirs et de responsabilités de gestion locale des forêts mettent en exergue aussi bien un certain nombre d’acquis juridico-politiques et matériels, que des effets sociaux pervers qui sont contraires au concept de la justice environnementale.

  6. Nuclear program of Iran. Towards de-escalation of a nuclear crisis. Advisory letter; Nucleair programma van Iran. Naar de-escalatie van een nucleaire crisis. Briefadvies

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-04-15

    The Dutch government, partly at the request of the House of Representatives (Second Chamber), the AIV asked to give an opinion about the position of Iran in the region and the role of the nuclear program of Iran in the geopolitical relations, in view of the most recent developments [Dutch] De Nederlandse regering heeft, mede op verzoek van de Tweede Kamer der Staten-Generaal, de AIV gevraagd advies uit te brengen over de positie van Iran in de regio en de rol van het nucleaire programma van Iran in de geopolitieke verhoudingen hierin, mede gelet op de meest recente ontwikkelingen.

  7. Proposal of law relative to the follow up of the sanitary and environmental consequences of nuclear tests; Proposition de loi relative au suivi des consequences sanitaires et environnementales des essais nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-01-15

    This proposal of law aims at coming up to the expectations of the people (military or civilian) who participated to the nuclear tests performed by France in Sahara (Reggane and In Eker) and in French Polynesia between February 13, 1960 and January 27, 1996, and of those who lived in the vicinity of these test-sites. Many of these people suffer from health and sanitary problems which may have a direct connection with their participation to the nuclear activities in these areas. This proposal of law foresees the creation of a fund for the indemnification of the victims of these tests and the creation of a commission for the follow up of epidemiological and environmental questions. (J.S.)

  8. Proposal of law relative to the follow-up of the sanitary and environmental consequences of nuclear tests. Wastes, pollution and nuisances; Proposition de loi relative au suivi des consequences sanitaires et environnementales des essais nucleaires. Dechets, pollution et nuisances

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-07-01

    This proposal of law aims at answering the expectations of all people, civil and military, who participated to the nuclear tests carried out by France between February 13, 1960 and January 27, 1996, or who lived in the vicinity of the Sahara and French Polynesia experimentation sites. It proposes the application of the link presumption principle to any illness affecting these people, the creation of an indemnization fund for the victims of these tests and the creation of a national commission for the follow-up of the enforcement of this law. (J.S.)

  9. No. 3104 law proposition relative to the evaluation of the sanitary and environmental consequences of the nuclear tests; No. 3104 proposition de Loi relative au suivi des consequences sanitaires et environnementales des essais nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-05-15

    This law proposition is devoted to those who participate, as soldier or not to the nuclear tests realized by the France between the 13 february 1960 and the 27 january 1996, or who lived near experimentation sites of the Sahara. It concerns some pathologies attributed to the exposure on the tests sites. (A.L.B.)

  10. Proposition of law relative to the follow of sanitary and environmental consequences of nuclear tests; Proposition de loi relative au suivi des consequences sanitaires et environnementales des essais nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-15

    The present proposition of law has for object to answer the expectation of all the persons who have participated as military personnel or civilians in nuclear tests made by France between February 13., 1960 and January 27., 1996, or lived near the nuclear test sites of Sahara (Reggane and In Eker) or in French Polynesia. The same pathologies are noticed among the veteran or the populations having lived near the nuclear tests sites of the other nuclear countries which made the same experiments. It is the case in United States, in Great Britain, in Australia, in New Zealand and in Fiji. In these different countries having a democratic system similar to ours, the governments took concrete measures to accede to the demands of their nationals. It thus turns out that a legislative initiative would represent a strong message of gratitude towards all those who had to undergo aftereffects on their health and that of their descendants of the only fact of their participation in the nuclear experiments of France. (N.C.)

  11. Nuclear power: major issues for France's industrial, energy and environmental policies; L'industrie nucleaire: les grands enjeux pour la france en termes de politiques industrielle, energetique et environnementale

    Energy Technology Data Exchange (ETDEWEB)

    Fouquet, F.; Vincent, C.; Iglesias, F. [Ministere de l' Economie, des Finances et de l' Industrie, Industrie Nucleaire, 75 - Paris (France)

    2007-02-15

    France ranks second in the world as producer of electricity from atomic power, and first in Europe. Thanks to its nuclear plants, the country's rates of CO{sub 2} emissions per inhabitant and in proportion to its GDP are among the lowest in the EU. French nuclear power is a success story: it employs more than 110.000 people, and AREVA has become a world leader in the fuel cycle and in the design and construction of power plants. Recently passed laws will help maintain a lasting technological advance for France: a deliberate commitment to develop nuclear power systems and an appointment with parliament in 2015 (before the underground depository for spent fuel is opened), guaranteed funding for further research. (authors)

  12. Molecular engineering and fluorescence for the detection of toxic cations

    International Nuclear Information System (INIS)

    Souchon, V.

    2007-11-01

    This work is a part of the 'Toxicologie Nucleaire Environnementale' program which aims at studying the effects on the living of heavy metals or radionuclides involved in nuclear industry. Most particularly, it deals with the design of new fluorescent sensors for the selective detection of Pb 2+ , Cd 2+ and Cs + in biological media. Several fluorescent calixarenes possessing nitrogen atoms were synthesized and their properties as potential lead sensors were investigated. One of them could be used in experimental conditions close to biological media and new target compounds with amide functional groups were proposed. Many approaches were considered for the design of selective fluorescent sensors for cadmium. On the basis of literature results, many chelating compounds incorporating sulfur atoms were synthesized but showed no significant affinity towards cadmium. On the opposite, compounds functionalized with several pyridine-2'-yl-1,2,3-triazol fluorescent moieties linked to a β-cyclodextrin or a calix[4]arene showed good affinity for cadmium in methanol, but the selectivity was found to be insufficient. In contrast, very satisfying results in terms of both selectivity and sensitivity could be obtained with the commercial calcium sensor Rhod-5N in an aqueous medium at neutral pH. Lastly, micromolar detection limits for the selective detection of caesium were reached in an aqueous medium at neutral pH thanks to a new sulfonated fluorescent calixarene with two appended crown-ethers. An original complexation mechanism was proposed and validated by molecular modelling (DFT). (author)

  13. Synthèse des corrélations entre Management des Technologies Organisationnelles et Responsabilité Sociale et Environnementale

    OpenAIRE

    Commandré, Monique

    2013-01-01

    Dans cet article notre démarche sera de proposer une synthèse des interactions entre les usages des technologies organisationnelles (TO) et la mise en œuvre de la responsabilité sociétale et environnementale (RSE). Notre démarche poursuit une finalité exploratoire étant donné le faible niveau opérationnel de la RSE. Elle reste à ce jour une notion prescriptive dont nous étudierons les enjeux et les problématiques posées en termes de management des technologies organisationnelles (MTO). La mét...

  14. Analytic index for nuclear physicians uses; Repertoire analytique a l'usage des physiciens nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Ballini, R.; Barloutaud, R.; Bernas, R.; Bretonneau, P.; Chaminade, R.; Cohen, R.; Conjeaud, M.; Cotton, E.; Faraggi, H.; Grjebine, T.; Joffre, H.; Laboulaye, H. de; Lesueur, C.; Leveque, A.; Moreau, J.; Naggiar, V.; Papineau, L.; Prugne, P.; Schuhl, C.; Studinowski, FJ.; Netter, F.; Raievski, V.; Valladas, G. [Commissariat a l' Energie Atomique, Lab. du Fort de Chatillon, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires; Marty, N.; Renard, G. [College de France, Lab. de Chimie Nucleaire (France)

    The problem of the documentation in nuclear physics becomes constantly more complex. Every week brings its share of new publications, always more numerous and more varied. To remedy to this facts that we tried, in the service of Nuclear Physics of the CEA, to give to the documentation a character of a collective and systematized work. The present report covers the literature appeared between first January 1950 and first July 1951. (Volume 1: CEA report number 120; Volume 2: CEA report number 184). (M.B.) [French] Le probleme de la documentation en physique nucleaire devient sans cesse plus complexe. Chaque semaine apporte son lot de publications, toujours plus nombreuses et plus diversifiees. C'est pour essayer de porter remede a cet etat de choses que nous avons essaye, au service de Physique Nucleaire du C.E.A., de donner a la documentation le caractere d'un travail collectif systematise. Le present rapport couvre la litterature parue entre le premier Janvier 1950 et le premier Juillet 1951. (Tome 1: Rapport CEA numero 120; Tome 2: Rapport CEA numero 184). (M.B.)

  15. The formation of scientists and technicians at the 'Centre d'Etudes Nucleaires' at Saclay

    International Nuclear Information System (INIS)

    Debiesse, J.

    1958-01-01

    The considerable needs in research workers and scientists which are asked by the nuclear energy obliged the Commissariat a l'Energie atomique to deal with a particular effort to increase the quantitative and qualitative formation of scientists. Most various ways have been used. 1- A National Institute of Nuclear Sciences and Nuclear Techniques was created, by a joint decree of the Prime Minister and the Minister for National Education (june 18, 1957). This Institute of Higher Teaching (250 students) indulges in the following matters: atomic engineering, quantum mechanics, theory and technic of particle accelerators, special metallurgy, radiobiology, thermic and mechanics of fluids. 2- An associated centre of the 'Conservatoire National des Arts et Metiers' was created (200 students) for technical assistants, drawers, etc. 3- In contribution with both electronic industry and Ministry of Work, the Centre d'Etudes Nucleaires contributes to an accelerated formation of technical assistants into Professional Centres. Conclusion: Training of scientists and research workers is one of the most important activities of the Centre d'Etudes Nucleaires de Saclay. Without losing its technical efficiency, it has supplied and varied means adapted to the various purposes that we shall reach. (author) [fr

  16. Nuclear biological studies in France; Les etudes de biologie nucleaires en France

    Energy Technology Data Exchange (ETDEWEB)

    Coursaget, J. [Commissariat a l' Energie Atomique, Saclay (France).Centre d' Etudes Nucleaires

    1961-07-01

    On the occasion of a colloquium on radiobiological research programmes, a number of documents dealing with French accomplishments and projects in this field were collected together. We felt that it would be useful to assemble these papers in one report; although they are brief and leave gaps to be filled in, they provide certain data, give an overall view of the situation, and can also suggest a rough plan for the general policy to adopt in the field of 'nuclear' biological research; i.e. research based on the nuclear tracer method or devoted to the action of ionising radiations. (author) [French] Un colloque sur les programmes de recherche en radiobiologie nous a donne l'occasion de reunir des documents sur les realisations et les projets francais dans ce domaine. Il nous a semble utile de reunir en un rapport l'ensemble de ces documents, qui, malgre leur brievete et malgre les lacunes qu'ils comportent, donnent un certain nombre d'informations, permettent une vue d'ensemble et peuvent dessiner aussi l'ebauche d'une politique coherente en matiere de recherches biologiques 'nucleaires', c'est-a-dire de recherches basees sur la methode des indicateurs nucleaires ou consacrees a l'action des rayonnements ionisants. (auteur)

  17. Éthique environnementale et développement durable : Réflexions sur le Principe Responsabilité de Hans Jonas

    Directory of Open Access Journals (Sweden)

    Sylvie Ferrari

    2010-06-01

    Full Text Available L’objet de cet article vise à étudier le développement durable sous l’angle de l’éthique environnementale. En particulier, on s’interroge sur la nécessité d’introduire dans l’analyse économique une justice d’autolimitation comme préalable à toute répartition des ressources environnementales entre les générations successives. Dans cette perspective, et en considérant les effets à long terme des actions humaines sur la nature, les conditions de mise en œuvre d’une éthique du futur sont analysées à travers le principe Responsabilité de H. Jonas.This article aims to study the sustainable development through the environmental ethics dimension. First, we analyse why a self-restriction justice has to be included into the economic analysis before any allocation of the environmental resources between generations. As the impacts of human actions on nature are dealing with the long run, we finally discuss the conditions for implementing an ethics of the future based on the Responsibility principle of H. Jonas.

  18. Report on the environmental and sanitary impacts of the nuclear tests performed by France between 1960 and 1996 and elements of comparison with the tests performed by the other nuclear Powers; Rapport sur les incidences environnementales et sanitaires des essais nucleaires effectues par la France entre 1960 et 1996 et elements de comparaison avec les essais des autres puissances nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Bataille, Ch.; Revol, H

    2002-07-01

    This report makes a comprehensive presentation of the French atmospheric and underground nuclear tests performed in Sahara and Polynesia between 1960 and 1996 with their possible impact on the health of populations and personnel and on the environment. A comparison is made with similar tests performed by other nuclear Powers: US (Marshall islands, Nevada), former Soviet union (Semipalatinsk, Novaya Zemlya), UK (several atmospheric test-sites), China, India, Pakistan. (J.S.)

  19. The 1989 annual report of the Institut de Physique Nucleaire-Orsay

    International Nuclear Information System (INIS)

    1989-01-01

    The activity report of the Institut de Physique Nucleaire (Orsay-France) from 1 Sep 1988 to 1 Aug 1989 is presented. Theoretical and experimental investigations were carried out in the following fields: light and medium exotic nuclei, on line spectroscopy, discrete high spin states, new radioactivities, thermal fission, detection systems, giant resonances, high excitation energy structure, reaction mechanisms at energies below 10 MeV/u and at 200 MeV/u and their evolution between 10 and 100 MeV/u, meson production, transfer reactions, spin modes in nuclei, dibaryonic resonances, inelastic scattering of polarized protons. Research programs in the field of radiochemistry and relating to inter-disciplinary fields are included. The activities involving teaching, the lists of publications conferences, seminars and theses are presented [fr

  20. The French civilian nuclear: connections and stakes; Le nucleaire civil francais: filieres et enjeux

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2010-07-01

    This document (18 power point slides) gives an overview of the French civilian nuclear industry and research and development: importance of the nuclear power generation in France, excellence of the education in nuclear sciences, organization of the nuclear connection (CEA, Areva, EDF, IRSN), the role of the French International Nuclear Agency (AFNI), the requirements for a renewal of human resources (French and foreign engineers) in the field of nuclear energy, the degree course for a diploma, examples of engineer and university diplomas, the educational networks in various regions of France, presentation of the Institut National des Sciences et Techniques Nucleaires (Nuclear Sciences and Techniques National Institute) and its master degrees, organization of the French education system in nuclear sciences with strong relations with the research and development programs

  1. 1351-IJBCS-Article-Gouissi Modeste

    African Journals Online (AJOL)

    pc

    1 Laboratoire de Toxicologie et de Santé Environnementale, CIFRED,. Université d'Abomey- Calavi (UAC), 03 BP 1463 Jéricho, Cotonou, Benin. 2 Ecole Polytechnique d'Abomey-Calavi (EPAC), Département de Génie de Biologie Humaine,. Université d'Abomey-Calavi (UAC), 01 BP 2009 Cotonou, Benin. 3 Département ...

  2. Substances bioactives élaborées par des cyanobactéries isolées de ...

    African Journals Online (AJOL)

    AKA BOKO

    Substances bioactives élaborées par des cyanobactéries isolées de certains écosystèmes aquatiques marocains. Khalid OUFDOU* et Brahim OUDRA. Equipe de Microbiologie et Toxicologie Environnementales, Laboratoire de Biologie et de Biotechnologie des Microorganismes, Faculté des Sciences Semlalia Marrakech ...

  3. French research in the field of nuclear agronomy; Les recherches francaises en agronomie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Guerin De Montgareuil, P. [Commissariat a l' Energie Atomique, Cadarache (France). Centre d' Etudes Nucleaires

    1964-07-01

    , industrial firms, university laboratories scientific institutes. The role of the Commissariat a l'Energie Atomique is defined: on the one hand it supplies information and support, and on the other hand it takes charge of specifically nuclear aspects of the work. Its part in the field has recently found expression in the creation, within the Biology Department, of a Radio-agronomy Section; its objective are described,, as well as the, means placed att its disposal at the Centre d'etudes Nucleaires, Cadarache. (author) [French] On propose un bilan des travaux les plus significatifs effectues en France depuis la deuxieme conference internationale en matiere d'agronomie nucleaire et qui vont d'une recherche apparemment desinteressee a l'application la plus directe. Une telle differenciation recouvre de moins en moins, au fur et a mesure de l'evolution des programmes, la distinction qui est faite dans l'expose entre l'action biologique des rayonnements et les autres emplois des techniques nucleaires. C'est ainsi que les recherches do radiogenetique agricole sont poursuivies dans deux directions: d'un point de vue theorique et methodologique avec l'etude comparative de l'action des divers types de rayonnements, l'influence du debit de dose et de la temperature, l'action des agents mutagenes chimiques, la production de chimeres sous irradiation gamma; et d'autre part, sous un aspect pratique aboutissant a la creation de varietes nouvelles plus resistantes ou plus precoces (riz, mil, arachide). Les problemes de destruction des insectes (eradication) et de conservation des denrees sous irradiation se trouvent egalement abordes par des voies et avec des objectifs tres divers. A la demarche globale representee par une irradiation pure et simple (grains humides, pommes de terre...) sont parfois associees des etudes souvent originales, d'ordre biochimique ou microbiologique (par exemple: alteration de l

  4. justice environnementale et

    African Journals Online (AJOL)

    MADAGASCAR CONSERVATION & DEVELOPMENT. VOLUME 7 | ISSUE 2S — NOVEMBER 2012. PAGE 82. Madagascar, les combustibles ligneux étaient déjà nettement moins coûteux que les combustibles pétroliers importés ou l'électricité pour la cuisson depuis les dévaluations des années. 1990 (ESMAP 1995).

  5. Quand préoccupations environnementales et enjeux professionnels s'entrecroisent : le cas des entreprises participant aux essais de voitures électriques

    Directory of Open Access Journals (Sweden)

    Pierre Magali

    2014-07-01

    Full Text Available Des expérimentations visant à promouvoir le déploiement du véhicule électrique se sont fait jour dans le cadre de projets démonstrateurs, depuis quelques années. Elles ont en commun de proposer à des salariés d'utiliser ces voitures dans des conditions très similaires au futur proche. Ce texte vise à la fois à mettre en avant les raisons que les différentes parties prenantes – qu'il s'agisse des directions en charge des achats ou du développement durable, des gestionnaires de flotte, des utilisateurs finaux, etc. – ont de s'inscrire dans ces expérimentations, et à expliciter la prédominance des enjeux professionnels, qui continuent de déterminer le rapport à cette voiture. En effet, les registres professionnels (enjeux de reconnaissance, d'exemplarité et personnels se combinent dans l'adoption de cette technologie de mobilité durable, que la préoccupation environnementale ne suffit pas à expliquer.

  6. Analytic catalog for the use of the nuclear physicists; Repertoire analytique a l'usage des physiciens nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Ballini, R.; Barloutaud, R.; Bernas, R.; Chaminade, R.; Cohen, R.; Conjeaud, M.; Cotton, E.; Faraggi, H.; Grjebine, T.; Laboulaye, H. de; Lehmann, P.; Leveque, A.; Levi, C.; Moreau, J.; Naggiar, V.; Olkowsky, J.; Papineau, L.; Papineau, L.; Prugne, P.; Schuhl, C.; Szteinsznaider, D.; Tzara, C.; Valladas, G. [Commissariat a l' Energie Atomique, Saclay(France). Centre d' Etudes Nucleaires; Marty, N.; Renard, G. [College de France, Lab. de Chimie Nucleaire (France)

    1952-07-01

    The problem of the documentation in nuclear physics becomes constantly more complex. Every week brings its share of publications, always more numerous and more varied. To remedy to this problem, we tried, at the Nuclear Physics Services of the CEA, to give to the documentation the character of a collective and systematized work. The present report covers the literature appeared between January 1, 1950 and July 1, 1951. (Volume 1: CEA report number 120; Volume 2: CEA report number 184). (M.B.) [French] Le probleme de la documentation en physique nucleaire devient sans cesse plus complexe. Chaque semaine apporte son lot de publications, toujours plus nombreuses et plus diversifiees. C'est pour essayer de porter remede a cet etat de choses que nous avons essaye, au service de Physique Nucleaire du C.E.A., de donner a la documentation le caractere d'un travail collectif systematise. Le present rapport couvre la litterature parue entre le 1 Janvier 1950 et le 1 Juillet 1951. (Tome 1: Rapport CEA numero 120; Tome 2: Rapport CEA numero 184). (M.B.)

  7. Molecular engineering and fluorescence for the detection of toxic cations; Ingenierie moleculaire et fluorescence pour la reconnaissance de cations toxiques

    Energy Technology Data Exchange (ETDEWEB)

    Souchon, V

    2007-11-15

    This work is a part of the 'Toxicologie Nucleaire Environnementale' program which aims at studying the effects on the living of heavy metals or radionuclides involved in nuclear industry. Most particularly, it deals with the design of new fluorescent sensors for the selective detection of Pb{sup 2+}, Cd{sup 2+} and Cs{sup +} in biological media. Several fluorescent calixarenes possessing nitrogen atoms were synthesized and their properties as potential lead sensors were investigated. One of them could be used in experimental conditions close to biological media and new target compounds with amide functional groups were proposed. Many approaches were considered for the design of selective fluorescent sensors for cadmium. On the basis of literature results, many chelating compounds incorporating sulfur atoms were synthesized but showed no significant affinity towards cadmium. On the opposite, compounds functionalized with several pyridine-2'-yl-1,2,3-triazol fluorescent moieties linked to a {beta}-cyclodextrin or a calix[4]arene showed good affinity for cadmium in methanol, but the selectivity was found to be insufficient. In contrast, very satisfying results in terms of both selectivity and sensitivity could be obtained with the commercial calcium sensor Rhod-5N in an aqueous medium at neutral pH. Lastly, micromolar detection limits for the selective detection of caesium were reached in an aqueous medium at neutral pH thanks to a new sulfonated fluorescent calixarene with two appended crown-ethers. An original complexation mechanism was proposed and validated by molecular modelling (DFT). (author)

  8. La gestion écosystémique pour le développement durable des territoires agricoles fragilisés par les dégradations environnementales

    Directory of Open Access Journals (Sweden)

    Adnane Berahmani

    2015-10-01

    Full Text Available L’approche de gestion écosystémique a été adoptée par le Ministère de l’Agriculture et de la Pêche Maritime dans le cadre du Programme d’appui à la politique sectorielle agricole (PAPSA financé par l’Union Européenne. Cette approche a pour objectif l’intégration de la dimension environnementale dans la planification et la programmation des projets de développement agricoles. Les Plans de gestion écosystémique élaborés à cet effet constituent des outils pour la concrétisation d’un développement durable des filières retenues par le programme PAPSA. L’article présente la démarche générale et son application dans le cas de la filière du palmier dattier à Bouanane. L’analyse détaillée de la démarche déployée et des résultats obtenus révèle la nécessité de faire évoluer cette approche pour tendre vers une collaboration accrue, d’une part entre les institutions du Ministère de l’Agriculture et d’autre part entre le Ministère de l’Agriculture, les autres départements ministériels et les bailleurs de fonds.

  9. Contribution to the study of thermal mixing between nuclear spin systems; Contribution a l'etude du melange thermique entre systemes de spins nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Goldmann, M. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1967-02-15

    This work describes methods of dynamic nuclear polarization in solids based on the thermal mixing between nuclear spin systems. The description of the thermal mixing processes involves most of the fundamental aspects of the spin temperature theory. The experiments, conducted with paradichlorobenzene and para-dibromobenzene, yield a detailed confirmation of the theoretical predictions. (author) [French] Ce travail decrit des methodes de polarisation dynamique nucleaire dans les solides basees sur le melange thermique entre systemes de spins nucleaires. La description des processus de melange thermique met en jeu la plupart des aspects fondamentaux de la theorie de la temperature de spin. Les experiences, realisees avec du paradichlorobenzene et du paradibromobenzene, apportent une confirmation detaillee des previsions theoriques. (auteur)

  10. Les reseaux de politique publique comme facteur d'influence du choix des instruments de politique energetique canadienne a des fins environnementales de 1993 a nos jours

    Science.gov (United States)

    Fathy El Dessouky, Naglaa

    Au cours de la derniere decennie, les modes de la gouvernance ont pris place dans un contexte totalement different de celui qu'ils avaient auparavant. Les gouvernements modernes se rendent compte qu'ils perdent de plus en plus leur capacite a elaborer et a gerer les changements d'une maniere autonome. Ainsi, les fonctions et les activites traditionnellement accomplies exclusivement par le gouvernement engagent de nos jours une gamme d'acteurs etatiques et non etatiques. A l'encontre du concept traditionnel de l'Etat controleur, la gouvernance contemporaine est ainsi devenue moins une question d'offre de service et davantage une gestion indirecte des reseaux de politique publique. Dans cette entreprise, les gouvernements contemporains, cherchant plus d'information, de soutien et de legitimite en matiere de formulation des decisions, ont besoin d'etablir des relations avec les divers groupes d'interet qui, a leur tour, voulaient plus de promotion et de protection en faveur de leurs interets a travers leur implication au processus de l'elaboration et de la mise en oeuvre des politiques publiques. Ainsi, l'approche des reseaux de politique publique represente aujourd'hui un courant considerable au sein du champ d'analyse des politiques publiques. Toutefois, les preoccupations des chercheurs pour cette approche, dans le domaine des politiques energetiques a des fins environnementales, semblent recentes, et les etudes realisees sont encore trop peu nombreuses. Au Canada, au debut des annees 1990, le gouvernement ainsi que plusieurs groupes d'interets, des differents secteurs energetique, industriel et environnemental, ont commence a intensifier leurs efforts pour s'attaquer au probleme du changement climatique d'origine energetique, genere surtout par le secteur de l'industrie. Au cours de la derniere decennie, la question touchant plutot le sujet du developpement energetique durable represente le plus important domaine des politiques publiques ayant surgi recemment dans

  11. Economic consequences of the Swiss 'Sortir du nucleaire' and 'Moratoire-plus' popular initiatives - Analysis using a balanced model

    International Nuclear Information System (INIS)

    Mueller, A.; Wickart, M.; Van Nieuwkoop, R.

    2001-01-01

    This article is a short version of the ENET number 210359. This report for the Swiss Federal Office of Energy (SFOE) presents the results of a study made to assess the economic consequences of two models for the opting out of nuclear energy in Switzerland, as proposed in two popular initiatives. The 'Sortir du nucleaire' (electricity without atomic power) initiative calls for the shutting down of the existing nuclear power stations and the 'Moratoire-plus' initiative calls for a stop on the building of new atomic power stations for 10 years. The method used for assessing the costs and benefits resulting if the initiatives were accepted in a public vote is described. Basic assumptions made on further factors concerning the electricity and energy markets are discussed. Results of analyses made for various scenarios with respect to CO 2 emissions are presented and include discussions on risk costs, effects on employment and welfare aspects

  12. Institutionnalisation de la protection environnementale et développement de l'artisanat minier dans les espaces sensibles de Madagascar

    Directory of Open Access Journals (Sweden)

    Rémy Canavésio

    2011-08-01

    Full Text Available À Madagascar, depuis quelques années, la sauvegarde de la biodiversité est devenue une priorité pour le gouvernement. Avec l’aide des partenaires étrangers le pays étend actuellement de manière spectaculaire son réseau d’espaces protégés. Malgré l’intégration de la gouvernance participative sur le terrain, ce mouvement s’accompagne d’une très forte déstabilisation des communautés locales. Parallèlement, le pays qui affronte des crises multiples (crise économique latente et crises politiques à répétition est le théâtre d’un formidable « boum » des activités informels en général et de l’artisanat minier en particulier. Dans bien des cas, lorsque la gestion des milieux sensible est retirée aux communautés locales au profit d’acteurs institutionnels, on assiste au développement de ces activités destructrices. Pour lutter contre cet effet pervers de l’institutionnalisation de la protection environnementale, il devient urgent de disposer d’un plus large panel de systèmes de gouvernance. Ceux-ci doivent être conçus pour s’adapter aussi bien que possible à la multitude de contextes rencontrés, en prenant en compte l’ensemble des acteurs, qu’ils soient formels, issus de la société traditionnelle, ou informels.In Madagascar, during the last few years, conservation of biodiversity has become a major priority for the government. Indeed, with the help of the foreign countries, Madagascar is currently expanding its network of protected areas. But despite the integration of participant governance on the ground, this movement contributes to the destabilization of local communities. Meanwhile, multiple crises (economic crisis, latent and recurrent political crises take place in Madagascar. Besides, the country is the scene of a tremendous “boom” of informal activities in general, and small-scale mining in particular. In many cases, when the protection of sensitive environments is taken from

  13. Analytische technieken in de klinische toxicologie : Kosten nopen tot centralisatie

    NARCIS (Netherlands)

    Touw, D.J.; De Ruiter, G.R.; Uges, D.R.A.

    2003-01-01

    Clinical toxicology is usually practised by hospital pharmacies. The hospital pharmacist decides with the doctor what tests are to be performed and advises the doctor according to the results of these tests. In the lasts decades, tremendous developments have occurred in the analytical possibilities

  14. Amélioration des performances environnementales des pratiques viticoles et analyse des risques pour la qualité du raisin : étape vers l’écoqualiconception©

    Directory of Open Access Journals (Sweden)

    Beauchet Sandra

    2017-01-01

    Full Text Available L’évolution des itinéraires techniques viticoles (ITKv vers un plus grand respect de l’environnement passe par une évaluation de leurs performances environnementales. Dans un contexte de gestion durable, plusieurs autres facteurs sont à prendre en compte, notamment le risque de modification de la qualité des raisins issus de ces ITKv. Les résultats d’évaluation environnementale par la méthode d’Analyse du Cycle de Vie (ACV ainsi que l’évaluation de la qualité du raisin s’appuient sur beaucoup données. Ce travail montre l’intérêt d’une méthode d’évaluation multicritère conjointe « environnement et qualité », dans le processus de changement de pratiques pour une amélioration des performances. Les résultats obtenus sur 5 ITKv montrent des différences de notes entre les 2 millésimes étudiés et des pratiques ont été identifiées pour leurs forts impacts sur les résultats ACV. Des propositions théoriques de changement de pratiques sont testées sur l’un des ITKv. Ces propositions améliorent les notes environnementales finales de +0,15 points à +0,77 points (/10 quand elles sont mises en œuvre séparément et +2,29 points (/10 en étant combinées. Un modèle explicatif de la qualité du raisin permet de vérifier que les nouvelles pratiques ne peuvent potentiellement pas altérer la qualité du raisin. La méthode d’évaluation conjointe CONTRA-QUALENVIC adaptée à la viticulture montre ici qu’elle peut être une aide à l’amélioration des ITKv.

  15. 1744-IJBCS-Article-Alain K. Aissi +

    African Journals Online (AJOL)

    hp

    Publique, Ministère de la Santé, 04 BP 378 Cotonou, Bénin. 3Laboratoire de Toxicologie et de Santé Environnementale, Centre Interfacultaire de Formation et de. Recherche en Environnement pour le Développement Durable (CIFRED), Université d'Abomey-Calavi (UAC),. 03 BP 1463, Jéricho, Cotonou, Bénin. 4Unité de ...

  16. Nuclear developments at the international inter govern mental level (1961); Developpements nucleaires sur le plan international intergouvernemental (1961)

    Energy Technology Data Exchange (ETDEWEB)

    Waynbaum, M. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1961-07-01

    The United Nations organisation and nuclear energy rose simultaneously, in 1945, to occupy an important place in the public eye. The spiritual succession of the League of Nations which had foundered during the war was taken up by the new organisation which sought to implant its political ideal in a more tangible reality, so that it might thereby be inspired by concrete and substantial objectives. This is one of the reasons for the existence of the dozen specialized agencies created by the family of the United Nations and dealing with Health, Culture, Agriculture, Finance, etc. Nuclear energy is one of these techniques. Becoming suddenly an important power factor and exploiting for itself the prestige of Science, it became the favorite domain for the growth of this new spirit, as much in its universal form in 1945 as in its more regional form which it was later to adopt. The achievements are numerous and of varying importance; they deserve te be studied carefully. (author) [French] L'organisation des Nations Unies et le nucleaire ont ete places simultanement, en 1945, au premier plan de la scene mondiale. La Societe des Nations ayant sombre pendant la guerre, son heritage spirituel fut recueilli par la nouvelle organisation qui chercha a enraciner son ideal politique dans une realite plus materielle, de facon a y puiser une nourriture concrete et substantielle. C'est une des raisons d'existence de la douzaine d'institutions specialisees gravitant dans la famille des Nations Unies et s'occupant de Sante, de Culture, d'Agriculture, de Finances, etc. Le nucleaire est l'une de ces techniques. Devenu soudainement un facteur primordial de puissance, Cristallisant a son benefice le prestige de la Science, c'etait un terrain de predilection pour le developpement du nouvel esprit, aussi bien sous la forme universelle de 1945, que sous les formes regionales qui ont vu le jour ensuite. Les travaux realises que nombreux, d

  17. La territorialisation des politiques environnementales

    Directory of Open Access Journals (Sweden)

    Amédée Mollard

    2010-10-01

    Full Text Available Le point de départ de cet article est la grande variabilité de la pollution nitrique diffuse de l’eau due à l’agriculture. Celle-ci dépend en particulier du climat, des types de sol et des systèmes de production agricole. Nos recherches réalisées de façon interdisciplinaire à partir de deux sites différents en France, montrent que cette hétérogénéité spatio-temporelle conditionne les pratiques agricoles mises en œuvre pour réduire la pollution au niveau de la norme admise. De ce fait, les pratiques les plus « coût-efficaces » diffèrent d’un territoire à l’autre, en fonction des caractéristiques locales. Ces résultats mettent donc en évidence une efficacité potentielle d’une territorialisation des politiques publiques. En théorie, de telles politiques sont considérées comme optimales par les économistes, car elles incitent les agents à moduler leurs efforts en fonction de la sensibilité du milieu. Mais, selon les études empiriques, cet avantage serait annulé par un coût élevé de mise en œuvre, de contrôle et de surveillance. Pour maintenir leur avantage sur des politiques uniformes, les politiques territorialisées devraient être mises en œuvre à un niveau spatial optimal. Un tel niveau devrait au minimum atteindre un compromis entre l’économie réalisée grâce à une modulation adaptée aux conditions locales et les sur-coûts dus à la décentralisation des solutions mises en œuvre. Cet article analyse la pertinence d’une prise en compte de ces spécificités par des politiques territorialisées. L’efficacité d’une régulation différenciée de la pollution nitrique est étudiée ici en évaluant l’importance de la variabilité spatiale des paramètres physiques et des coûts de la territorialisation.The paper starts with the wide variability of nonpoint water nitrogenous pollution generated by agriculture. This variability depends especially on climate, soil types and farming systems. Our interdisciplinary researches, carried out on two different sites in France, show that space and time heterogeneity influence farm practices to be implemented in order to reduce pollution at the standard level. Hence the most cost-effective farm practices are different from one place to another, depending on local characteristics. Therefore this result emphasises the potential efficiency of spatially targeted policies. Theoretically, such policies are considered optimal, since economic agents tune their efforts according to the sensitivity of the milieu where they operate. But, according to empirical analyses, this advantage is counteracted by a high cost of implementation, monitoring and enforcement. In order to maintain the advantage of site-specific policies versusuniform policies, the former have to be implemented at an optimal level of space. This level should at least allow for a trade-off between lower expenses due to an appropriate tuning to the local conditions and heavier costs of decentralised measures. This paper deals with this specific question regarding territorialized policies. It is based on a study of the efficiency of differentiating the way this pollution is regulated, focussed on assessing the importance of spatial variability in physical parameters and in site-specific policies’ costs.

  18. Evolution of nuclear chemical industry in France; Evolution de l'industrie chimique nucleaire en France

    Energy Technology Data Exchange (ETDEWEB)

    Fould, M.H. [Commissariat a l' Energie Atomique, Saclay (France).Centre d' Etudes Nucleaires

    1959-07-01

    'impulsion du CEA, mais aussi de maitres d'oeuvres tels qu'Electricite de France et la Marine Marchande, l'effort nucleaire fran is atteint pour les annees 1957-1961, environ 600 milliards de francs: plus de la moitie de cette somme sera depensee par l'industrie chimique en recherches, installations pilotes, constructions d'usines et livraisons. Faire bien, vite et rentable sont les buts recherches. Ces objectifs sont atteints grace a une collaboration intime des grands services de l'etat et de l'industrie privee. Ce gros effort s'exerce principalement dans les voies suivantes: - Un traitement chimique pousse de tonnages croissants des minerais de l'Union fran ise, visant a produire un uranium pur, abondant et bon marche. - Une preparation soigneuse de combustibles nucleaires economiques et parfaitement adaptes aux divers types de reacteurs en fonctionnement ou en construction. - Un retraitement des combustibles irradies pour en extraire le plutonium de facon complete ainsi que l'uranium et certains produits de fission. - Une fabrication industrielle des materiaux nucleairement purs ou resistants a la corrosion exiges par la technologie des reacteurs producteurs d'energie et de recherches. - La fourniture aux multiples utilisateurs etrangers et fran is d'isotopes et de traceurs radioactifs reclames par la medecine, l'industrie et l'agriculture en nombre toujours croissant. - Un traitement chimique meticuleux des effluents gazeux ou liquides dans des stations au controle rigoureux afin de rendre les reacteurs et leurs annexes parfaitement surs d'emploi. Cet expose aura montre l'ampleur de l'effort deploye par une industrie chimique nucleaire jeune, dynamique et en plein essor. Ayant assure ses techniques, realise de nombreuses installations, elle est largement en etat de faire face au programme atomique fran is. En outre, elle est capable et desireuse d'etre associee aux developpements de l

  19. Public debate about the EPR nuclear power plant at Flamanville; Debat public sur la centrale nucleaire EPR a Flamanville

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    The project of building of he EPR reactor at Flamanville (Manche, France) has been submitted to the public debate. This document includes a presentation of the project and of the rules of the public debate, a synthesis of the file made by the prime contractor (EDF), a synthesis of the collective book of national actors concerned by the project (a group of associations for environment protection, Areva company, the ministries of economy and ecology, Global Chance, association of pro-nuclear ecologists (AEPN), 'Sortir du Nucleaire' (out-of nuclear) network, group of scientists for the information about nuclear (GSIEN), association for the promotion of the Flamanville site (Proflam), French nuclear energy society (SFEN) in association with 'Sauvons le Climat' (let's save climate), regional collective association 'EPR non merci, ni ailleurs, ni ici' (EPR, no thanks, neither elsewhere, nor here), NegaWatt), and 5 detailed books of actors: ACRO (association for the control of radioactivity in Western France), CFDT and CGT syndicates, the economic and social council of Basse Normandie region, and Proflam. (J.S.)

  20. The atomic energy course of the 'Institut National des Sciences et Techniques nucleaires' at the centre d'Etudes Nucleaires at Saclay; L'enseignement de genie atomique de l'Institut national des Sciences et Techniques nucleaires au Centre d'Etudes nucleaires de Saclay

    Energy Technology Data Exchange (ETDEWEB)

    Baissas, H. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1958-07-01

    foreign students. 8- Annexe: list of courses, practical work, pile projects drawn up by the 1957 students. (author)Fren. [French] 1- Les raisons de sa creation. L'electricite de France et l'industrie interessee par le developpement de l'Energie atomique ont demande au Commissariat a l'Energie atomique de former des ingenieurs capables d'etudier des projets de piles et de diriger leur construction. 2- Recrutement et Droits d'inscription. Les demandes d'inscription ont toujours depasse les possibilites. Cette annee, les cours sont suivis par 74 eleves permanents, dont 20 etrangers, et une centaine d'auditeurs libres. Tous les elevont deja ingenieurs ou nantis de grades universitaires eleves. Droit d'inscription: 250 000 F pour les eleves, 125 000 F pour les auditeurs. 3- Organisation de l'Enseignement. II comprend deux options: physique et chimie et dans chaque option: une centaine de conferences, une trentaine de travaux pratiques, des stages dans les services, l'etude d'un projet de reacteur par un groupe de 4 ou 5 eleves. L'ensemble occupe l'annee universitaire du 1 novembre au 14 juillet. 4- Sanction. Un examen final combinant les notes de deux epreuves theoriques, des travaux pratiques, du stage, et du projet conduit a un diplome d'ingenieur en genie atomique. Il n'est pas cree en realite de nouveaux ingenieurs; une mention nouvelle est seulement ajoutee a un diplome deja acquis. Les resultats ont toujours ete excellents. Le pourcentage des echecs est tres faible. 5- Placement des Diplomes. Ils reviennent tous dans leurs industries d'origine qui ont paye leurs salaires et les droits d'inscription en se privant de leurs services pendant les neuf mois de duree des cours. 6- Creations analogues. Un cours analogue a ete cree au Centre d'Etudes Nucleaires de Grenoble. Tandis que celui de SACLAY s'adresse plus specialement aux ingenieurs deja en fonctions, celui de Grenoble

  1. The nuclear power stations of the French atomic energy programme (1960); Les centrales nucleaires de puissance du programme francais (1960)

    Energy Technology Data Exchange (ETDEWEB)

    Leduc, C. [Commissariat a l' Energie Atomique, Saclay (France).Centre d' Etudes Nucleaires; Roux, J.P. [Electricite de France (EDF), 75 - Paris (France)

    1960-07-01

    After recalling the entry of nuclear energy into energy production in France, the paper emphasizes the evolution of techniques applied in the designing of French nuclear power plants and describes the means employed for reducing costs per kWh of EDF2 and EDF3 compared with EDF1: the electric power per ton of uranium varies from 493 kW/t for EDF1 to 970 kW/t for EDF3. For this purpose the thermal power and electric power of units are changed respectively from 290 MWt for EDF1 to 1200 or 1600 MWt for EDF3 and from 28 to 250 MW. The results are obtained by an improvement in neutronic characteristics, developments in nuclear fuel technology, and simplification of the system of charging the reactor, whose means of maintenance are increased; the EDF2 heat-exchangers have been so designed as to increase the unit power of the elements, which will attain 9 MWt, as against 3 for EDF1. For EDF3 an advance project forecasts a thermodynamic layout with only one pressure stage. The paper ends with a description of the burst-slug detection systems, and an appendix gives a detailed comparative table of EDF1, EDF2 and EDF3 plant characteristics. (author) [French] Apres avoir rappele l'integration de l'energie nucleaire parmi les moyens de production de l'energie en France, les auteurs se penchent surtout sur l'evolution des techniques appliquees dans l'equipement des centrales nucleaires francaises et decrivent les moyens mis en oeuvre pour reduire les prix de revient du kWh d'EDF2 et d'EDF3 par rapport a EDF1: la puissance electrique par tonne d'uranium varie de 493 kW/t pour EDF1 a 970 kW/t pour EDF3. C'est dans ce but que les puissances thermiques et la puissance unitaire des groupes turbo-alternateurs passent respectivement de 290 MWt pour EDF1 a 1200 ou 1600 MWt pour EDF3 et de 82 a 250 MW. Les resultats sont obtenus par une amelioration des caracteristiques neutroniques, des progres realises sur la technologie des elements

  2. Formation and linear amplification of signals in nuclear spectroscopy; Formation et amplification lineaire des signaux en spectroscopie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Le Du, R.; Mettes, J.D. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1967-07-01

    The apparatus described can be associated to various detectors used in nuclear physics, either rapid - its rise time is always under 30 nanoseconds - or slow, because of its continuous connections. Its gain can be increased very progressively from 2000 to 10 by increasing the feedback factors. The maximum permissible entry voltage, without causing any increase in the dead-time is 12 volts, whatever the value of the gain. The device is fitted with two continuous exits giving signals of equal amplitude but of opposite sign (10 volt pulses followed by a 4 volt undershoot). Its controls, all accessible, make it possible to adapt the apparatus very rapidly to various measurements. It is completely transistorized and the amplifier is fitted into a RENATRAN 2/8 drawer. A gain 4 preamplifier in the same drawer makes it possible to obtain a total gain of 8000. (authors) [French] L'appareil que nous decrivons peut etre associe aux divers detecteurs utilises en physique nucleaire, rapides - son temps de montee propre est toujours inferieur a 30 ns - ou lents, du fait de ses liaisons continues. Son gain peut etre amene tres progressivement de 2000 a 10 par l'augmentation graduelle des taux de contre-reaction utilises. La tension maxima admissible a l'entree, sans augmentation anormale du temps mort, est de 12 volts quel que soit le gain. L'appareil comporte deux sorties continues, delivrant des signaux d'amplitudes egales et de signes opposes (impulsions de 10 volts suivies d'un undershoot de 4 volts). Ses reglages, tous accessibles, permettent d'adapter tres rapidement l'appareil aux diverses mesures. Entierement transistorise, l'amplificateur est monte dans un tiroir RENATRAN 2/8. Un preamplificateur de gain 4, inclus dans le meme tiroir permet de porter le gain a 8000. (auteurs)

  3. Conflits armés et Environnement : Cadre, modalités, méthodes et rôle de l’Évaluation Environnementale

    Directory of Open Access Journals (Sweden)

    Michel-André Bouchard

    2010-11-01

    Full Text Available Les conflits armés sont source de catastrophes majeures pour l’environnement. Dans les années 60, la défoliation de la jungle vietnamienne par l’armée américaine a interpellé la conscience collective sur la protection de l’environnement en situation de conflit armé (Pearce, 2000. La guerre du Golfe de 1990-1991, avec l’utilisation des armes à l’uranium appauvri et l’incendie des puits de pétrole a fait de la protection de l’environnement lors des conflits armés une préoccupation internationale. Des dispositions juridiques et réglementaires du droit international interdisent et limitent les actions néfastes sur l’environnement en temps de guerre. Au nombre de ces dispositions, il y a la Convention ENMOD de 1976, le Protocole I de Genève de 1977 et les Directives de la Croix-Rouge pour la formation des forces armées (1996. La difficulté de mise en œuvre de ces instruments est l’une des causes principales de l’exacerbation et de la persistance des impacts environnementaux des conflits armés. Un bref aperçu des travaux effectués dans ce domaine montre que cette question est jusque-là abordée sous un angle purement théorique, empirique et descriptif (causes, manifestations et typologies des conflits. Et, contrairement aux autres domaines de connaissances (scientifiques, économistes, juristes, universitaires, les spécialistes de l’évaluation environnementale se sont à ce jour peu intéressés à cette question.L’analyse des impacts environnementaux permet de dresser une typologie axée sur les trois grandes phases de déroulement des conflits armés: pré-conflit, syn-conflit et post-conflit. S’y ajoutent les impacts « collatéraux » qui se poursuivent même pendant la phase post-conflit.L’article analyse l’applicabilité de la procédure d’Evaluation Environnementale (EE et d’Evaluation Environnementale Stratégique (EES en distinguant les différentes phases des conflits armés et en

  4. Contribution des savoir-faire viticoles au développement durable et à la démarche de responsabilité Sociétale et environnementale, dans le cadre d'une gouvernance patrimoniale des terroirs

    Directory of Open Access Journals (Sweden)

    Rochard Joël

    2017-01-01

    Full Text Available Les savoirs viticoles constituent, au-delà des atouts locaux, un patrimoine humain irremplaçable. Le génie des hommes a permis à de nombreux écosystèmes terrestres, y compris parfois les plus extrêmes, d'être valorisés afin d'exprimer la quintessence du vin, expression des terroirs, ainsi que des particularités historiques et culturelles locales. Au-delà de la dimension territoriale, les savoir-faire viticoles sont également porteurs de dynamique locale, de préservation et de valorisation. Par ailleurs, ceux-ci peuvent alimenter la créativité scientifique et technologique dans une période de post modernité, en proie à des doutes et parfois des impasses, en quête de valeurs traditionnelles. La communication, à partir d'exemples, souligne la contribution des savoirs historiques locaux à une culture et une gouvernance, indispensable à la valorisation des terroirs et des vins, mais également au développement de démarche opérationnelle du développement durable en lien notamment avec la responsabilité sociale et environnementale de la filière viticole, vis-à-vis de notre planète et des générations futures.

  5. Is it possible to recycle nuclear wastes? Costs, risks and stakes of the plutonium industry; Peut-on recycler les dechets nucleaires? Couts, risques et enjeux de l'industrie du plutonium

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2009-07-01

    This document, published by the French association 'Sortir du nucleaire' (Get out of nuclear), gives some information on the chain reaction from uranium to plutonium, the difference between reprocessing (which does not reduce waste volumes but multiply waste types) and recycling, the high risks associated with plutonium transport, La Hague as the most dangerous nuclear site in France, reprocessing as the alibi for the French nuclear industry, Areva as an expert in propaganda, reprocessing as an absurd world strategy, plutonium as a fuel for proliferation, the myth of unlimited energy with the breeder reactors, and so on

  6. Thermal energy of nuclear origin produced in non-fissile materials (1962); Energie calorifique d'origine nucleaire degagee dans les materiaux non fissiles (1962)

    Energy Technology Data Exchange (ETDEWEB)

    Naudet, G. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires; Millies, P.; Berger, J. [Commissariat a l' Energie Atomique, Grenoble (France). Centre d' Etudes Nucleaires

    1962-07-01

    A first part is devoted to the description of the interaction phenomena between elementary particles and material that may be observed during the irradiation process in a nuclear reactor: nuclear reactions due to neutrons, production of gamma rays and absorption of those gamma rays through various processes. In a second part the phenomena producing calorific energy in irradiated material are quantitatively examined. In the third part results are summed up in a formulary. The fourth part presents tables and figures giving to the reader all the numerical values necessary for practical calculations. (authors) [French] Une premiere partie est consacree a l'examen des principaux phenomenes d'interaction des particules avec la matiere qui interviennent lors d'une irradiation dans un reacteur: reactions nucleaires dues aux neutrons, production des rayons gamma et absorption de ces derniers par les divers processus. Une deuxieme partie etudie quantitativement les phenomenes qui conduisent a l'apparition d'energie calorifique dans le materiau irradie. En troisieme partie, un formulaire resume les resultats etablis. Dans une quatrieme partie, des tableaux et des courbes fournissent a l'experimentateur toutes les valeurs numeriques necessaires aux calculs pratiques. (auteurs)

  7. Report on the behalf of the Economy, Sustainable Development and Land Planning Commission on the bill project related to the follow-up of environmental consequences of French nuclear tests in French Polynesia - Nr 244; Rapport fait au nom de la commission de l'economie, du developpement durable et de l'amenagement du territoire sur la proposition de loi relative au suivi des consequences environnementales des essais nucleaires francais en Polynesie francaise - No. 244

    Energy Technology Data Exchange (ETDEWEB)

    Courteau, Roland

    2012-01-11

    In a first part of this report, the author recalls the history of the creation of the Pacific experiment centre and the test campaign which took place without a real consultation of local populations. He comments the end of nuclear tests while giving an overview of site dismantling and of radioactive materials which have been left there. Then, he addresses the environmental consequences of the nuclear tests in French Polynesia: follow-up system, follow-up of radiological consequences, risks related to subsoil steadiness, necessity of better information of local populations and acknowledgement of test effects. He presents the bill project concerning the return of both atolls within the authority of French Polynesia. The discussion of the bill project articles is reported

  8. Evaluation environnementale et économique de la production de protéines végétales dans les systèmes de grandes cultures : ESOPE (Évaluation systèmes oléoprotéagineux : environnement-économie

    Directory of Open Access Journals (Sweden)

    Gosse Ghislain

    2001-09-01

    Full Text Available Dans le cadre d’une réflexion générale sur les alternatives durables à la suppression des farines carnées dans l’alimentation animale, l’introduction et le renforcement des oléoprotéagineux dans les systèmes de production apparaissent comme les solutions les plus crédibles. Néanmoins, le caractère durable des solutions envisagées doit être évalué sur des bases techniques, environnementales et économiques qui permettront, en outre, d’estimer l’acceptabilité par les agriculteurs des scénarios proposés.

  9. Analyse de Cycle de Vie appliquée à un chantier d'entretien routier sur la RN 76 Evaluation technique et environnementale d'une couche de liaison d'enrobé bitumineux pour différents taux de recyclage. Introduction

    OpenAIRE

    Jullien , Agnès; Moneron , Pierre; Ventura , Anne; Legret , Michel; Demare , Dominique; De La Roche , Chantal; Schemid , Michel; Lachet , Céline; Gaillard , David; Oudin , Jack; Jacques , Jean-Pierre; Odie , Lionel; Meriel , Bernard; Boittin , Régis; Cabannes , Hervé

    2006-01-01

    Le concept de développement durable amène à favoriser les pratiques de recyclage des déchets issus de la route. Cependant, la généralisation de ces pratiques amène des interrogations en matière de protection de l'environnement, nécessitant de conduire des évaluations techniques et environnementales couplées. La méthodologie normalisée d'analyse de cycle de vie (ACV) est adaptée à cette double approche. Une expérimentation a été réalisée en septembre 2001 sur la chaussée de la RN 76, en appliq...

  10. Analyse de Cycle de Vie appliquée à un chantier d'entretien routier sur la RN 76. Evaluation technique et environnementale d'une couche de liaison d'enrobé bitumineux pour différents taux de recyclage. Inventaire de Cycle de Vie de la couche de liaison

    OpenAIRE

    Jullien , Agnès; Moneron , Pierre; Ventura , Anne; Legret , Michel; Demare , Dominique; De La Roche , Chantal; Schemid , Michel; Lachet , Céline; Gaillard , David; Oudin , Jack; Jacques , Jean-Pierre; Odie , Lionel; Meriel , Bernard; Boittin , Régis; Cabannes , Hervé

    2006-01-01

    Le concept de développement durable amène à favoriser les pratiques de recyclage des déchets issus de la route. Cependant, la généralisation de ces pratiques amène des interrogations en matière de protection de l'environnement, nécessitant de conduire des évaluations techniques et environnementales couplées. La méthodologie normalisée d'analyse de cycle de vie (ACV) est adaptée à cette double approche. Une expérimentation a été réalisée en septembre 2001 sur la chaussée de la RN 76, en appliq...

  11. Analyse de Cycle de Vie appliquée à un chantier d'entretien routier sur la RN 76. Evaluation technique et environnementale d'une couche de liaison d'enrobé bitumineux pour différents taux de recyclage. Chapitre 2: Déroulement de l'étude

    OpenAIRE

    Jullien , Agnès; Moneron , Pierre; Ventura , Anne; Legret , Michel; Demare , Dominique; De La Roche , Chantal; Schemid , Michel; Lachet , Céline; Gaillard , David; Oudin , Jack; Jacques , Jean-Pierre; Odie , Lionel; Meriel , Bernard; Boittin , Régis; Cabannes , Hervé

    2006-01-01

    Le concept de développement durable amène à favoriser les pratiques de recyclage des déchets issus de la route. Cependant, la généralisation de ces pratiques amène des interrogations en matière de protection de l'environnement, nécessitant de conduire des évaluations techniques et environnementales couplées. La méthodologie normalisée d'analyse de cycle de vie (ACV) est adaptée à cette double approche. Une expérimentation a été réalisée en septembre 2001 sur la chaussée de la RN 76, en appliq...

  12. Nuclear wastes; Dechets nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    Here is made a general survey of the situation relative to radioactive wastes. The different kinds of radioactive wastes and the different way to store them are detailed. A comparative evaluation of the situation in France and in the world is made. The case of transport of radioactive wastes is tackled. (N.C.)

  13. Nuclear energy; Le nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    This digest document was written by members of the union of associations of ex-members and retired people of the Areva group (UARGA). It gives a comprehensive overview of the nuclear industry world, starting from radioactivity and its applications, and going on with the fuel cycle (front-end, back-end, fuel reprocessing, transports), the nuclear reactors (PWR, BWR, Candu, HTR, generation 4 systems), the effluents from nuclear facilities, the nuclear wastes (processing, disposal), and the management and safety of nuclear activities. (J.S.)

  14. New features of nuclear excitation by {alpha} particles scattering; Nouveaux aspects de l'excitation nucleaire par diffusion de particules {alpha}

    Energy Technology Data Exchange (ETDEWEB)

    Saudinos, J. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1962-07-01

    Inelastic scattering of medium energy a particles by nuclei is known to excite preferentially levels of collective character. We have studied the scattering of isotopically enriched targets of Ca, Fe, Ni, Cu, Zn. In part I, we discuss the theoretical features of the interaction. In part II, we describe the experimental procedure. Results are presented and analysed in part III. {alpha} particles scattering by Ca{sup 40} is showed to excite preferentially odd parity levels. In odd nuclei we have observed multiplets due to the coupling of the odd nucleon with the even-even core vibrations. For even-even nuclei, a few levels are excited with lower cross-sections between the well-known first 2{sup +} and 3{sup -} states. Some could be members of the two phonon quadrupole excitation and involve a double nuclear excitation process. (author) [French] On sait que la diffusion inelastique des particules alpha de moyenne energie excite preferentiellement des niveaux de caractere collectif. Nous avons etudie la diffusion des particules alpha de 44 MeV du cyclotron de Saclay par des isotopes separes de Ca, Fe, Ni, Cu, Zn. Dans la premiere partie nous exposons les theories de cette interaction. Dans la seconde nous decrivons le systeme experimental. Les resultats sont donnes dans la troisieme partie. Nous montrons que les niveaux excites preferentiellement pour {sup 40}Ca par diffusion ({alpha},{alpha}') sont de parite negative. Dans les noyaux pair-impair nous avons observe des multiplets dus au couplage du nucleon celibataire avec les vibrations du coeur pair-pair. Pour les noyaux pair-pair nous avons pu etudier entre le premier niveau 2{sup +} et le niveau 3{sup -} deja bien connus certains etats plus faiblement excites. Il semble qu'ils sont dus a une excitation quadrupolaire a deux phonons et impliquent un processus de double excitation nucleaire. (auteur)

  15. The environmental exposures; Les expositions environnementales

    Energy Technology Data Exchange (ETDEWEB)

    Billon, S.; Morin, A.; Caer, S. [CEA Fontenay aux Roses, Institut de Radioprotection et de Surete Nucleaire IRSN, DPHD/SEGR, 92 (France)] [and others

    2003-07-01

    Seven articles constitute this chapter about environment. Natural radioactivity, table water analysis, cosmic radiation on board a plane, evaluation of radiation doses in the case of tritium releases, knowledge got from the radioecology group of North Cotentin are the different subject studied in this file. (N.C.)

  16. Health problems raised by the elimination of radioactive wastes and nuclear accidents; Problemes sanitaires poses par l'elimination des dechets radioactifs et par les accidents nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Jammet, H.; Mechali, D.; Dousset, M. [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1964-07-01

    The rapid development of nuclear energy demands an urgent solution to the health problems arising from the discharge into the environment of radioactive residues produced by nuclear installations. - To be able to evaluate the risks run by the population and to fix tolerance limits for waste discharge, it is necessary to possess an exact knowledge of the course taken by the radioelements discharged, from their source until they reach man. The incorporation of radioelements in food cycles is the first risk to take into consideration. The factors involved in all stages of this transmission must be foreseen, whether they concern physical or biological media, because of their continuity and their interdependence. Finally, socio-economic and dietetic data must be collected in order that the risks and tolerance levels estimated are based on concrete and experimental rather than theoretical knowledge. The risk of nuclear accidents in the atomic industry, although very improbable, must be taken into consideration because of the seriousness of their consequences. The health problems arise in the field of professional hygiene on the one hand and in that of public hygiene on the other. In the first field the risk is two-fold and involves irradiation and contamination. The public sphere is reduced essentially to the risk of contamination by radioactive substances accidentally released in the surrounding medium. The health studies to be conducted in this field therefore include research not only on irradiation or contamination therapeutics but also on the transfer of radioelements from the accident site to man, mainly through food cycles, in their physical and in their biological components. Studies of this kind form the basis of decisions in the health field which would have to be taken in the case of an accident. (authors) [French] Le developpement rapide de l'energie nucleaire rend urgente la solution des problemes sanitaires poses par le rejet dans le milieu ambiant des

  17. Improvement of pressure-vessel surveillance of a PWR-power plant of the Societe d'Energie Nucleaire Franco-Belge des Ardennes (S.E.N.A.)

    International Nuclear Information System (INIS)

    Bevilacqua, A.; Lloret, R.; Riehl, R.

    1984-01-01

    This paper describes a new dosimetry, installed inside and outside the Pressure Vessel of CHOOZ Nuclear Power Plant of the Societe d'Energie Nucleaire Franco-Belge des Ardennes (S.E.N.A.), during its 1982-83 operation cycle. The inner dosimetry deals with a simulated capsule located under the reactor plate, and includes copper, nickel, iron, niobium, copper-cobalt, neptunium and uranium dosimeters. Its aim is to qualify the information given by the existing copper dosimetry. The spectrum used with these measurements is obtained by the 1 D ANISN Code and BIP-N 2 library. The outer dosimety is the fluence determination along the outer wall of the vessel. Two tubes, equiped by neutron dosimeters, seven meters long, were fixed along the vessel. On the median plane, the results are compared to a 2 D DOT transport calculation. Preliminary results are given which improve the vessel and specimens neutronic characterisation. (Auth.)

  18. A pegada ecológica como instrumento de avaliação ambiental para a cidade de Londrina Ecological footprint as a tool for environmental assessment for the city of Londrina L’empreinte écologique comme instrument d’évaluation environnementale pour la ville de Londrina

    Directory of Open Access Journals (Sweden)

    Cristiane Kleba Lisboa

    2010-03-01

    Full Text Available Dans la définition des outils d’évaluation environnementale et de qualité de vie, l’empreinte écologique (Ecological Footprint, proposée par William Rees et Mathis Wackernagel (1996, est utilisée comme un important indicateur environnemental et de développement durable à différentes échelles d’analyse. Dans le présent article elle est utilisée pour une analyse environnementale urbaine, en évaluant les impacts produits par la ville de Londrina-PR et par les citoyens qui y habitent. L’empreinte a été calculée selon neuf variables, qualitatives et quantitatives, analysées à partir d’outils de Système d’Informations Géographiques (SIG.In the definition of environmental evaluation tools and life quality, the Ecological Footprint, proposed by William Rees and Mathis Wackernagel (1996, it has been used as an important indicator of environmental and sustainability pointer at different analysis scales. In the current article it was used the Ecological Footprint for an urban analysis, evaluating the impacts generated by the city of Londrina-PR and by its citizens. The footprint was calculated through nine variables, qualitative and quantitative, analyzed from the Geographic Information System GIS.Na definição de ferramentas de avaliação ambiental e qualidade de vida, a Pegada Ecológica (Ecological Footprint, proposta por William Rees e Mathis Wackernagel (1996, vem sendo utilizada como um importante indicador ambiental e de sustentabilidade em diferentes escalas de análise. No presente artigo utilizou-se a Pegada Ecológica para uma análise ambiental urbana, avaliando os impactos gerados pela cidade de Londrina-PR, e pelos cidadãos que nela habitam. A pegada foi calculada através de nove variáveis, qualitativas e quantitativas, analisadas a partir de ferramentas de Sistema de Informação Geográfica (SIG.

  19. Can-rupture detection in gas-cooled nuclear reactors; La detection des ruptures de gaine dans les piles nucleaires refroidies par gaz

    Energy Technology Data Exchange (ETDEWEB)

    Roguin, A. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1965-07-01

    Can-rupture detection (DRG) is one important aspect of pile safety, more particularly so in the case of gas-cooled reactors. A rapid and sure detection constitutes also an improvement as far as the efficiency of electricity-producing nuclear power stations are concerned. Among the numerous can-rupture detection methods, that based on the measurement of the concentration of short-lived fission gases in the heat-carrying fluid has proved to be the most sensitive and the most rapid. A systematic study of detectors based on the electrostatic collection of the daughter products of fission gases has been undertaken with a view to equip the reactors EL 2, G 3, EDF 1, EDF 2 and EDF 3, the gas loops of PEGASE and EL 4. The different parameters are studied in detail in order to obtain a maximum sensitivity and to make it possible to construct detection devices having the maximum operational reliability and requiring the minimum maintenance. The primary applications of these devices are examined in the case of the above-mentioned reactors. (author) [French] La Detection des Ruptures de Gaines (D. R. G.) est un aspect important de la securite des piles et plus particulierement des piles refroidies par un gaz. Une detection rapide et sure constitue aussi un element d'amelioration du rendement des centrales nucleaires productrices d'energie electrique. Parmi les nombreuses methodes de detection des ruptures de gaines, la mesure de la concentration dans le fluide caloporteur des gaz de fission a vie courte s'est revelee comme la plus sensible et la plus rapide. Une etude systematique des detecteurs a collection electrostatique des descendants des gaz de fission a ete entreprise en vue d'equiper les piles EL 2, G 3, EDF 1, EDF 2 et EDF 3, les boucles a gaz de la pile Pegase et la pile EL 4. Les divers parametres sont etudies en detail pour obtenir une sensibilite maximum et permettre la realisation de dispositifs de detection ayant le maximum de securite de

  20. Absorptieverminderende technieken in de toxicologie : Dubbelblind vergelijkend onderzoek is niet beschikbaar

    NARCIS (Netherlands)

    Touw, D.J.; Grouls, R.; De Vries, I.; Meulenbelt, J.; Uges, D.R.A.

    2003-01-01

    When an intoxicated patient is admitted to a hospital, the first treatment usually is preventing further absorption of the ingested material. Possible techniques are emesis, gastric lavage, multiple administrations of activated charcoal in combination with a laxative and whole bowel irrigation.

  1. Application des spots de sang séché en pharmacologie et en toxicologie

    OpenAIRE

    Deglon, Julien

    2012-01-01

    Dans le domaine de l’analyse biomédicale, le sang est de loin la matrice la plus couramment utilisée. Son obtention s’effectue traditionnellement par une ponction veineuse au niveau du bras. Un mode de prélèvement alternatif a fait son apparition dans les années 60 : les spots de sang séché sur papier filtre ou dried blood spots (DBS). Bien que les avantages (simplicité, micro volumes, transport, stockage et sécurité) aient été clairement identifiés, ce mode de prélèvements est longtemps rest...

  2. INTOXICATIE MET METHANOL EN ETHYLEENGLYCOL: KLINISCHE TOXICOLOGIE EN BEREKENING VAN DE OPTIMALE DOSIS ETHANOL ALS ANTIDOTUM

    NARCIS (Netherlands)

    Touw, D.J.; Geus, W.P.; Vinks, A.A.T.M.M.; Van Dijk, A.

    1993-01-01

    Frequently patients with an intoxication due to the intake of methanol or ethylene glycol are admitted to Dutch hospitals. With relatively simple analytical techniques the toxicological laboratory can analyse a serum sample and answer the question what and how much was ingested. After methanol or

  3. Contribution to the study of the evolution of radiation induced He in Be O; Etudes sur l'evolution de l'helium produit par reactions nucleaires dans l'oxyde de beryllium

    Energy Technology Data Exchange (ETDEWEB)

    Bareau, J. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1966-11-15

    The purpose of this work in-pile investigation of He formed by (n, 2n) and (n, {alpha}) nuclear reactions, released from irradiated BeO, in the temperature range 1000 - 1350 deg. C. The experimental results show that, for an instantaneous neutron fast flux of 10{sup 13} n cm{sup -2} sec{sup -1}, an equilibrium is attempted, after several days, for a part lower than 20 per cent of the quantity of He formed, theoretically calculated from the neutron cross sections of nuclear reactions, and from the analytical form of the neutron fast flux, releases from the solid. The validity of the values of calculated helium and the gas chromatographic analytical method are also verified by dissolution of the BeO pellets in cryolite. A new fast neutron flux measuring method may be so defined. The discussion of the experimental results enables to establish that the processus of He release is characterized by two phenomena: the first one which controls the release of He atoms out of the solid and the second which reveals a capture processus, connected to the irradiation and probably due to the vacancies induced in the lattice. (author) [French] On etudie en pile le degagement de l'helium forme par reactions nucleaires (n, 2 n) et (n, {alpha}) dans l'oxyde de beryllium irradie entre 1000 et 1350 deg. C. Les resultats experimentaux montrant que, pour un flux rapide instantane de 10{sup 13} n{sub r} cm{sup -2} s{sup -1}, on aboutit, au bout de quelques jours, a un etat d'equilibre pour lequel une partie, inferieure a 20 pour cent de la quantite d'helium forme, calculee theoriquement a partir des sections efficaces des reactions nucleaires et de la forme analytique du flux rapide, s'echappe du solide. On verifie egalement par dissolution des echantillons de BeO dans la cryolithe la validite du calcul de l'helium et de la methode de dosage par chromatographie en phase gazeuse. On peut ainsi definir une methode nouvelle de mesure des flux rapides. La

  4. Conformity of nuclear construction codes with the requirements of the French order dated December 12, 2005 related to nuclear pressure equipment; Conformite des codes de construction nucleaires avec les exigences de l'arrete du 12 decembre 2005 relatif aux equipements sous pression nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Grandemange, J.M.; Renaut, P. [Areva-NP, Tour AREVA, 92084 - Paris La Defense cedex, (France); Paris, D. [EDF-Ceidre 2 rue Ampere - 93206 SAINT-DENIS Cedex (France); Faidy, C. [EDF-Septen 12/14, Avenue Dutrievoz 69628 Villeurbanne Cedex (France)

    2007-07-01

    The French Decree dated December 13, 1999 transposing the Pressure Equipment Directive (PED) has replaced the fundamental texts on which up to now the regulation for pressure equipment important for the safety of nuclear reactors was also founded. By a Ministerial Order - called 'ESPN Order' - dated December 12, 2005, a new regulation has been issued for nuclear pressure equipment. This text makes reference to the Decree transposing the PED while completing these provisions by supplementary requirements having the objective to provide a very high level of integrity guarantee for equipments which are the most important for safety, and to cover the prevention of radioactive release risks. These regulatory evolutions are presented in the Plenary Session of the ESOPE conference. Referencing the Decree and thus the PED, and including specific provisions, the Ministerial Order implies that the Manufacturers update their documents and, if necessary, their prescriptions in the following two domains: - that of the conformity of Codes and Standards used, generally inspired from the ASME Code Section III, with the essential safety requirements of the PED, - that of the respect of the complementary provisions brought by the ESPN Order. This paper presents the more significant conclusions of this work and the resulting amendments of the RCC-M Code, introduced by the 2007 addendum to that Code. The analysis will lead to specify the same type of complementary requirements to Code when a manufacturer wishes to use the German KTA Rules or the ASME Code Section III. (authors) [French] Le decret du 13 decembre 1999 transposant la directive europeenne (DESP) relative aux equipements sous pression a remplace les textes fondamentaux sur lesquels se fondait egalement jusque la la reglementation des appareils a pression importants pour la surete des reacteurs nucleaires. Par arrete - dit 'arrete ESPN' - du 12 decembre 2005, une nouvelle reglementation a ete dictee. Ce

  5. Nuclear medicine; La medecine nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Sibille, L. [Hopital Lapeyronie CHU Montpellier, Medecine Nucleaire, 34 - Montpellier (France); Nalda, E.; Collombier, L.; Kotzki, P.O.; Boudousq, V. [CHU de Nimes, Service de Medecine Nucleaire et de biophysique, 30 - Nimes (France)

    2011-05-15

    Nuclear medicine is a medical specialty using the properties of radioactivity. Radioactive markers associated with vectors are used as a tracer or radiopharmaceutical for diagnostic purposes and/or therapy. Since its birth more than half a century ago, it has become essential in the care of many patients, particularly in oncology. After some definitions, this paper presents the main nuclear techniques - imaging for diagnostic, radiopharmaceuticals as therapeutic agents, intra-operative detection, technique of radioimmunoassay - and the future of this field. (authors)

  6. Information sur les technologies nucleaires

    CERN Multimedia

    2002-01-01

    "La base Inis (International Nuclear Information System) de l'Agence Internationale d'Energie Atomique (IAEA) dispose desormais de liens vers les textes complets de documents internationaux" (1 paragraph).

  7. Nuclear fuels; Les combustibles nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    The nuclear fuel is one of the key component of a nuclear reactor. Inside it, the fission reactions of heavy atoms, uranium and plutonium, take place. It is located in the core of the reactor, but also in the core of the whole nuclear system. Its design and properties influence the behaviour, the efficiency and the safety of the reactor. Even if it represents a weak share of the generated electricity cost, its proper use represents an important economic stake. Important improvements remain to be made to increase its residence time inside the reactor, to supply more energy, and to improve its robustness. Beyond the economical and safety considerations, strategical questions have to find an answer, like the use of plutonium, the management of resources and the management of nuclear wastes and real technological challenges have to be taken up. This monograph summarizes the existing knowledge about the nuclear fuel, its behaviour inside the reactor, its limits of use, and its R and D tracks. It illustrates also the researches in progress and presents some key results obtained recently. Content: 1 - Introduction; 2 - The fuel of water-cooled reactors: aspect, fabrication, behaviour of UO{sub 2} and MOX fuels inside the reactor, behaviour in loss of tightness situation, microscopic morphology of fuel ceramics and evolution under irradiation - migration and localisation of fission products in UOX and MOX matrices, modeling of fuels behaviour - modeling of defects and fission products in the UO{sub 2} ceramics by ab initio calculations, cladding and assembly materials, pellet-cladding interaction, advanced UO{sub 2} and MOX ceramics, mechanical behaviour of the fuel assembly, fuel during a loss of coolant accident, fuel during a reactivity accident, fuel during a serious accident, fuel management inside reactor cores, fuel cycle materials balance, long-term behaviour of the spent fuel, fuel of boiling water reactors; 3 - the fuel of liquid metal fast reactors: fast neutrons radiation-induced damages in structural materials, fuels and targets for the transmutation in FBR; 4 - the fuel of gas-cooled reactors: fuel particulates, behaviour under irradiation, mechanical modeling, the fuel for very high temperature reactors, the fuel for gas-cooled fast reactors; 5 - the fuel for research reactors; 6 - the Jules Horowitz reactor: a tool for the future fuel studies. (J.S.)

  8. Development of a power-period calculation unit for nuclear reactor Control; Etude et realisation d'un ensemble de calcul puissance periode pour le controle d'un reacteur nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Martin, J. [Commissariat a l' Energie Atomique, Centre d' Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)

    1966-10-01

    The apparatus studied is a digital calculating assembly which makes it possible to prepare and to present numerically the period and power of a nuclear reactor during operation, from start-up to nominal power. The pulses from a fission chamber are analyzed continuously, using real time. A small number of elements is required because of the systematic use of a calculation technique comprising the determination of a base 2 logarithm by a linear approximation. The accuracy obtained for the period is of the order of 14%; the response time of the order of the calculated period value. An approximate value of the power (30%) is given at each calculation cycle together with the power thresholds required for the control. (author) [French] L'appareil etudie est un ensemble de calcul digital permettant d'elaborer et d'afficher numeriquement la periode et la puissance, d'un reacteur nucleaire lors de son fonctionnement depuis le demarrage jusqu'a la puissance nominale. Il traite en temps reel, de facon continue, les impulsions en provenance d'une chambre de fission. Grace a l'utilisation systematique d'une technique de calcul, la determination d'un logarithme a base 2 par approximation lineaire, un nombre reduit d'elements est utilise. La precision obtenue sur la periode est de l'ordre de 14 pour cent, le temps de reponse de l'ordre de la valeur de la periode calculee. Un ordre de grandeur de la puissance (30 pour cent) est donne a chaque cycle de calcul ainsi que des seuils de puissance necessaires au controle. (auteur)

  9. Chemical elimination of alumina in suspension in nuclear reactors heavy water; Elimination de l'alumine en suspension dans l'eau lourde des reacteurs nucleaires par voie chimique

    Energy Technology Data Exchange (ETDEWEB)

    Ledoux, A. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1967-02-01

    Corrosion of aluminium in contact with moderating water in nuclear reactor leads to the formation of an alumina hydrosol which can have an adverse effect on the operation of the reactor. Several physical methods have been used in an attempt to counteract this effect. The method proposed here consists in the elimination of the aluminium by dissolution and subsequent fixation in the ionic form on mixed-bed ion-exchange resin. In order to do this, the parameters and the values of these parameters most favorable to the dissolution process have been determined. If the moderator is heavy water, the deuterated acid can be prepared by converting a solution in heavy water to a salt of the acid using a deuterated cationic resin. (author) [French] La corrosion de l'aluminium au contact de l'eau moderatrice des reacteurs nucleaires, donne lieu a la formation d'un hydrosol d'alumine nuisible au bon fonctionnement des reacteurs. Plusieurs methodes physiques ont ete mises en oeuvre pour pallier ces inconvenients. On propose ici d'eliminer l'alumine par solubilisation pour la fixer ensuite sous forme ionique par des resines echangeuses d'ions, en lit melange. A cette fin on determine les parametres et leurs grandeurs favorables a cette solubilisation. Si le moderateur est de l'eau lourde la preparation d'acide deutere peut etre effectuee par passage d'une solution en eau lourde a un sel de l'acide sur resine cationique deuteree.

  10. Contribution to the study of solid helium-3 by nuclear magnetic resonance; Contribution a l'etude de l'helium trois solide par resonance magnetique nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Landesman, A. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1968-07-01

    Due to the unusually large zero point motion of helium three atoms in the solid, the overlap of the atomic wave functions is very important. As a consequence, there are exchange interactions, the theoretical calculation and the experimental measurement of which are discussed. Nuclear magnetic resonance is especially well suited for the latter.A detailed theory is given for both exchange narrowing and Zeeman-exchange cross relaxation, which phenomena are used to measure the exchange interaction as a function of molar volume. The alignment temperature is thus known; it goes down when the pressure goes up and is never higher than three milli degrees. An influence of helium four impurities on the exchange interactions between helium three atoms which are neighbours of the substitutional He is shown. (author) [French] Par suite de l'amplitude exceptionnelle des mouvements de point zero dans l'helium trois solide, le recouvrement des fonctions d'onde atomiques est tres important. Il en resulte des interactions d' echange dont on discute l'evaluation theorique et la mise en evidence experimentale. Cette derniere peut se faire par resonance magnetique; on etudie theoriquement les phenomenes de retrecissement par echange et de relaxation Zeeman-echange que l'on met a profit pour determiner les interactions d'echange en fonction du volume molaire. On en deduit que la temperature d'alignement nucleaire diminue quand on comprime le solide et est au plus de 3x10{sup -3} K. L'influence des impuretes d'helium quatre sur les interactions d'echange entre atomes {sup 3}He voisins de {sup 4}He est mise en evidence. (auteur)

  11. Towards sustainable enterprises: Improving social and environmental practices starting from the informal economy Vers des entreprises durables : Améliorer les pratiques sociales et environnementales en commençant par l’économie informelle Hacia las empresas sostenibles: Mejora de las prácticas sociales y medioambientales a partir de la economía informal

    Directory of Open Access Journals (Sweden)

    Maria Sabrina De Gobbi

    2012-05-01

    Full Text Available The goal of this paper is to present tools which allow informal firms to improve their social and environmental performance and become sustainable enterprises. The paper first provides an overview of the informal economy and sustainable enterprises from the perspective of the International Labor Organization. The methodological part consists of a presentation of tools which can be used to facilitate the transition of informal businesses to formality. Tools are divided into two groups: Those which require the active participation of private partners, and others which are based on partnerships between public and private entities. Applications of tools from experiences in different developing countries and mainly from projects run by the International Labor Organization are presented and their achievements and limits discussed.The paper concludes that a more focused approach on the informal economy should be adopted if more positive results are to be achieved in terms of improved social and environmental performance of enterprises. In addition, it highlights that the impact of actions on informal firms should always be monitored and reported even when the focus of projects is not on the informal economy.L’objectif de cet article est de présenter les outils qui permettent aux entreprises informelles d’améliorer leurs performances sociales et environnementales afin de s’inscrire dans la durabilité. Cet article s’ouvre sur un aperçu de l’économie informelle et des entreprises durables du point de vue de l’Organisation Internationale du travail. Il se poursuit par une partie méthodologique qui consiste en une présentation des outils permettant d’aider les entreprises de passer de l’état informel à l’état formel. Ces outils se répartissent en deux groupes : ceux qui nécessitent la participation active de partenaires privés et ceux basés sur le partenariat entre entités publiques et privées. L’article présente ensuite

  12. Organic chemistry and radiochemistry: study of chemical interactions between iodine and paint of French nuclear reactor in a severe accident situation; Chimie organique et radiochimie. Etude des interactions chimiques iode-peinture dans un reacteur nucleaire (de type R.E.P.) en situation d'accident grave

    Energy Technology Data Exchange (ETDEWEB)

    Aujollet, Y. [Direction Generale de la Surete Nucleaire et de la Radioprotection, 75 - Paris (France)

    2005-01-01

    In Phebus (French in pile facility; PWR scale 1/5000) experiments, performed by the Institut de Radioprotection et de Surete Nucleaire, few quantities of organic iodides were registered after interaction between iodine and reactor containment paint. This study concerns all mechanisms of chemical reactions between iodine and the polymer of the paint in order to estimate the organic iodides released from the paint. At first, all the paint components had been identified. Several models of chemical sites of the polymer were synthesized and tested with iodine in different conditions of temperature and radiation. These experiments showed interactions between iodine and secondary or tertiary amines by charge transfer. In few cases, the complex of tertiary amines creates oxidation reactions. (author)

  13. Student perceptions and lessons learned from flipping a masters level public health course | Perceptions des étudiants et leçons tirées d’une classe inversée pour un cours de maîtrise en santé environnementale et professionnelle

    Directory of Open Access Journals (Sweden)

    Lindsay P. Galway

    2015-05-01

    Full Text Available The flipped classroom instructional model has emerged as an alternative to conventional lecture-based teaching that has dominated higher education for decades. In 2013, a cohort of graduate-level public health students participated in a flipped environmental and occupational health course. We present the design, implementation, and evaluation of this course. Using data collected from a post-course survey, focus group sessions, and classroom observation, we examine student perceptions of the flipped classroom instructional model and synthesize lessons learned from flipping the classroom more broadly. Post-course survey data indicate that students had generally positive perceptions towards the flipped classroom instructional model. Four major themes emerged from the focus group data in relation to perceptions of the flipped classroom: knowledge application, content delivery, innovation, and connecting the online and in-class components. These results are promising and suggest that this approach warrants further consideration and research. Le modèle pédagogique de la classe inversée a émergé comme solution de rechange à l’enseignement traditionnel par cours magistraux qui a dominé l’éducation supérieure pendant des décennies. En 2013, une cohorte d’étudiants en santé publique aux cycles supérieurs a participé à un cours inversé sur la santé environnementale et professionnelle. Nous présentons la conception, la mise en œuvre et l’évaluation de ce cours. À l’aide de données recueillies par l’entremise d’un sondage après le cours, lors de séances de discussion en groupe et d’observation en classe, nous examinons les perceptions qu’ont les étudiants du modèle pédagogique de la classe inversée et résumons les leçons tirées qui sont pertinentes pour les cours inversés en général. Les données du sondage réalisé après le cours indiquent que les étudiants avaient des perceptions pour la plupart

  14. Study and installation of concrete shielding in the civil engineering of nuclear construction (1960); Etude et mise en place des betons de protection dans le genie civil des ouvrages nucleaires (1960)

    Energy Technology Data Exchange (ETDEWEB)

    Dubois, F. [Commissariat a l' Energie Atomique, Saclay (France).Centre d' Etudes Nucleaires

    1960-07-01

    etudes, deux applications pratiques sont decrites telles qu'elles ont ete realisees au Centre d'Etudes Nucleaires de Saclay. Des specifications sont donnees pour les betons de barytine et pour la fabrication des blocs de protection du synchrotron a protons 'Saturne'. (auteur)

  15. Reactivity measurements on a sub-critical nuclear reactor using statistical fluctuations of the neutron flux; Mesure de la reactivite d'un reacteur nucleaire en regime sous-critique a partir des fluctuations statistiques du flux neutronique

    Energy Technology Data Exchange (ETDEWEB)

    Feghahati, E. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1969-07-01

    It is intended in this report to show that it is possible to design an apparatus for measuring the reactivity of a sub-critical nuclear reactor, using a spectral analysis of the variations in the output signal of a counter. The method proposed consists in the measurement of the spectral density in two frequency bands, and in the determination of the 'uncorrelated' components so as to obtain the 'correlated' components, the ratio of these two correlated components giving the reactivity if {beta}/l is known. It is concluded that this method could be applied with the help of a simple apparatus having a measurement range of up to -5000 pcm. Since the efficiency of the detector cannot be increased above a certain value, the accuracy depends largely on the time of measurement: it is shown that it is possible to measure -3000 pcm with an accuracy of {+-} 5 per cent for a time of measurement of 600 seconds. (author) [French] On propose, dans ce travail, de montrer qu'il est possible de realiser un appareil de mesure de la reactivite d'un reacteur nucleaire en regime sous-critique, a partir de l'analyse spectrale des fluctuations du signal de sortie d'un compteur. La methode proposee consiste a mesurer la densite spectrale dans deux bandes de frequences, et a determiner les composantes 'non correlees' de facon a obtenir les composantes 'correlees', le rapport de ces deux composantes correlees permet d'obtenir la reactivite lorsque l'on connait {beta}/l.On en conclut que cette methode peut conduire a la realisation d'un appareil simple, dont la gamme de mesure s'etend jusqu'a - 5 000 pcm. Puisque l'efficacite du detecteur ne peut etre augmentee au-dela d'une certaine valeur, la precision depend, pour une grande part, du temps de mesure: on montre que l'on peut mesurer -3000 pcm avec une precision de {+-} 5 pour cent pour une duree de la mesure de 600 secondes. (auteur)

  16. Répercussions environnementales et sanitaires de l'exploitation ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Mining and Seasonal Variation of the Metals Concentration in the Puyango River Basin—Ecuador. Articles de revue. Mineria, Ambiente y Salud en la Cuenca del Rio Puyango Sur del Ecuador. Rapports. Informe técnico final : minería del oro en el Ecuador fase III; consolidación, uso de la investigación y difusión (período ...

  17. Vers une pisciculture durable à hautes performances environnementales

    OpenAIRE

    Vandeputte, Marc; Aubin, Joel; Médale, Françoise; Quillet, Edwige; Duchaud, Eric; Boudinot, Pierre; Labbé, Laurent; Kaushik, Sadasivam

    2011-01-01

    La pisciculture est une production en plein développement au niveau mondial, où elle couvre désormais près de 50% des apports de poisson pour la consommation humaine. En France et en Europe, son développement est plus lent, en partie du fait d’une perception négative de ses impacts sur l’environnement. En premier lieu, la quantité de poissons sauvages utilisés sous forme de farines et huiles pour alimenter les poissons carnivores pose question, mais dans ce domaine d’importants progrès ont ét...

  18. Developing Environmental and Scientific Education in School Développement de l’éducation environnementale et de l’éducation scientifique à l’école Desarrollo de la educación medioambiental y científica en la escuela

    Directory of Open Access Journals (Sweden)

    G.D. Bevilacqua

    2011-09-01

    Full Text Available Initiatives involving notions of environmental education and scientific education were stimulated in a state secondary school (Niterói, Rio de Janeiro, Brazil, using practical and dynamic activities undertaken with pupils aged from 15 to 17 years old during an entire academic year. Each activity had a specific organization, with its own goals, targets, and a schedule for completing tasks, as well as staggered participation by the pupils involved. The variety of activities allowed pupils to be assigned according to their specific skills and interests. The aim of the project was to foster commitment in pupils in their day-to-day performance of activities, thereby helping create habits in accordance with an environmental and scientific education. The implementation of this project afforded the pupils the opportunity to plan actions which would allow ideas to be put into practice, turning them into reality. As well as teaching them subject matter from the curriculum, the actions undertaken also enable the teaching of auxiliary strategies to promote better eating habits and minimize the amount of organic waste discarded. Cultivating vegetable gardens in crates only requires small spaces, and raw vegetable peelings thrown in the bin were used to create organic compost for the garden itself. Activities such as these contribute towards making the school not just a place for formal education, but also a centre for teaching and disseminating measures that could yield immediate results in terms of raising the quality of life of the school community.Des initiatives portant sur des notions d’éducation environnementale et d’éducation scientifique, ont été encouragées dans une école publique (Niterói, RJ - Brésil de l’enseignement secondaire, par le biais d’activités pratiques et dynamiques développées auprès d’élèves de 15 à 17 ans, sur toute une année scolaire. Chaque activité a exigé une organisation particulière comprenant des

  19. Desenvolvendo a educão ambiental e a educão científica escola Developing environmental and scientific education in school Développement de l'éduction environnementale de l'éducation scientifique à l'école Desarrollo de la educación medioambiental y científica en la escuela

    Directory of Open Access Journals (Sweden)

    G.D. Bevilacqua

    2011-09-01

    Full Text Available Initiatives involving notions of environmental education and scientific education were stimulated in a state secondary school (Niterói, Rio de Janeiro, Brazil, using practical and dynamic activities undertaken with pupils aged from 15 to 17 years old during an entire academic year. Each activity had a specific organization, with its own goals, targets, and a schedule for completing tasks, as well as staggered participation by the pupils involved. The variety of activities allowed pupils to be assigned according to their specific skills and interests. The aim of the project was to foster commitment in pupils in their day-to-day performance of activities, thereby helping create habits in accordance with an environmental and scientific education. The implementation of this project afforded the pupils the opportunity to plan actions which would allow ideas to be put into practice, turning them into reality. As well as teaching them subject matter from the curriculum, the actions undertaken also enable the teaching of auxiliary strategies to promote better eating habits and minimize the amount of organic waste discarded. Cultivating vegetable gardens in crates only requires small spaces, and raw vegetable peelings thrown in the bin were used to create organic compost for the garden itself. Activities such as these contribute towards making the school not just a place for formal education, but also a centre for teaching and disseminating measures that could yield immediate results in terms of raising the quality of life of the school community.Des initiatives portant sur des notions d’éducation environnementale et d’éducation scientifique, ont été encouragées dans une école publique (Niterói, RJ - Brésil de l’enseignement secondaire, par le biais d’activités pratiques et dynamiques développées auprès d’élèves de 15 à 17 ans, sur toute une année scolaire. Chaque activité a exigé une organisation particulière comprenant des

  20. Preparation and study of the properties of lead telluride and cadmium telluride diodes for use in nuclear spectrometry; Preparation et etude des proprietes de diodes au tellurure de plomb et au tellurure de cadmium en vue d'une utilisation en spectrometrie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Lancon, R. [Commissariat a l' Energie Atomique, Grenoble (France). Centre d' Etudes Nucleaires

    1969-07-01

    This work studies the possibility of using high atomic number compound semiconductors, like lead telluride and cadmium telluride as to realize nuclear radiation detectors, specially in gamma ray spectrometry because of their high absorption coefficient. The problems related to the preparation of binary compounds are exposed. Experiments on PbTe show the influence of the conditions of preparation on the electrical properties of the semiconductor which are greatly dependent on the stoichiometry of the compound. PbTe surface-barrier diodes were realized and have been used to study the surface properties of this semiconductor. These diodes cannot detect nuclear radiations because of the too weak resistivity of our material. Different types of devices made of Cd Te have been studied. One of these diodes has been used as an alpha particle detector. We explain the relative poor performances of that detector by the presence of lattice defects in Cd Te where charge carriers may recombine themselves. By analysing the properties of gold diffused Cd Te diodes we identified this defect, the cadmium vacancy, the presence of which is due to the deviation from stoichiometry during the preparation of the material. (author) [French] Ce travail etudie la possibilite d'utiliser des semiconducteurs composes d'elements a numero atomique eleve, tels que le tellurure de plomb et le tellurure de cadmium pour la realisation de detecteurs de rayonnements nucleaires, grace notamment a la section efficace de capture elevee qu'ils presentent vis-a-vis des rayons gamma. On souligne les problemes relatifs a la preparation des composes binaires. Les experiences realisees sur PbTe mettent en evidence l'influence des conditions de preparation sur les proprietes electriques du semiconducteur qui dependent fortement de la stoechiometrie du compose. Nous avons realise des diodes au PbTe a barriere de surface qui ont permis de preciser les proprietes de surface de ce semiconducteur

  1. Contribution to the study of molecular movements in cyclohexane by electron spin resonance and electron-nuclear double resonance using a radical probe; Contribution a l'etude des mouvements moleculaires dans le cyclohexane par resonance paramagnetique electronique et double resonance electronique-nucleaire a l'aide d'une sonde radicalaire

    Energy Technology Data Exchange (ETDEWEB)

    Volino, F. [Commissariat a l' Energie Atomique, Grenoble (France). Centre d' Etudes Nucleaires

    1969-07-01

    Solutions of stable free radicals of the nitroxide type have been studied as a function of temperature. In the plastic or globular state, the cyclohexane molecules have rapid rotational and diffusional movements. They transmit this movement to dissolved free radicals. Conversely, measurements by electron spin resonance of the absolute movement of the radicals, and by electron nuclear double resonance of their movement relative to the cyclohexane molecules give very precise methods for local analyses of the movement present in the cyclohexane matrix. The principle of these techniques makes up the 'radical probe method'. (author) [French] Des solutions de radicaux libres stables, du type nitroxyde dans le cyclohexane ont ete etudiees, en fonction de la temperature. Les molecules de cyclohexane, dans l'etat plastique ou globulaire, sont animees de mouvements rapides de rotation sur elles-memes et de diffusion. Elles transmettent leur mobilite aux radicaux libres dissous. Reciproquement, la mesure du mouvement absolu des radicaux, a l'aide de la resonance paramagnetique electronique, et celle du mouvement relatif des radicaux et des molecules de cyclohexane par double resonance electronique-nucleaire, constituent des methodes tres precises pour analyser localement les mouvements presents dans la matrice de cyclohexane. Ce principe et ces techniques constituent la 'methode de la sonde radicalaire'. (auteur)

  2. Synthesis and purification of some alkyl phenanthrenes and presentation of their infrared, ultraviolet, nuclear magnetic resonance and mass spectra; Synthese et purification de quelques alcoylphenanthrenes et presentation ds leurs spectres d'absorption infrarouge, ultraviolette, de resonance magnetique nucleaire et de masse

    Energy Technology Data Exchange (ETDEWEB)

    Persaud, K. [Commissariat a l' Energie Atomique, Grenoble (France). Centre d' Etudes Nucleaires

    1965-01-01

    We have carried out the synthesis of: - phenanthrene - its five monomethyl derivatives - three dimethyl derivatives - two trimethyl derivatives. We have then purified these products as well as a certain number of others obtained from various sources. We have been able to obtain in the majority of cases, a purity of 99.5 per cent or over, these figures being obtained by low voltage mass spectrometry. Finally we have recorded the infrared, ultraviolet, nuclear magnetic resonance and mass spectra of these products for which an atlas has been drawn up. (author) [French] Nous avons realise la synthese: - du phenanthrene - de ses cinq derives monomethyles - de trois de ses derives dimethyles - de deux de ses derives trimethyles. Nous avons ensuite purifie ces produits ainsi qu'un certain nombre d'autres que nous avons obtenus de sources differentes. Nous avons pu atteindre, dans la plupart des cas, une purete egale ou superieure a 99,5 pour cent, chiffres determines par la spectrometrie de masse a basse tension. Enfin, nous avons enregistre les spectres infrarouges, ultraviolets, de resonance magnetique nucleaire et de masse de ces produits dont nous avons fait un atlas. (auteur)

  3. Contribution to the study and use of ionisation chambers for nuclear reactor control (1965); Contribution a l'etude et a l'utilisation des chambres d'ionisation pour le controle des reacteurs nucleaires (1965)

    Energy Technology Data Exchange (ETDEWEB)

    Duchene, J. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1961-02-15

    high-power reactors. (author) [French] Les chambres d'ionisation sont actuellement les detecteurs les mieux adaptes au controle des reacteurs nucleaires par des mesures neutroniques. Nous avons cru bon de rappeler quelques generalites concernant la dynamique des reacteurs, les differents procedes de detection des neutrons, le fonctionnement des chambres d'ionisation et les methodes de mesure utilisees. Notre contribution aux techniques de controle des reacteurs consiste d'une part en une tentative de synthese des facteurs intervenant dans le fonctionnement des chambres d'ionisation, l'etude de ces facteurs, et d'autre part l'elaboration de chambres d'ionisation a fission et a bore permettant de suivre la marche d'un reacteur du demarrage jusqu'a la puissance maximale. Dans le domaine des chambres a fission, nous avons en particulier ameliore les techniques de depot d'oxyde d'uranium sur l'aluminium et realise la mise au point de depots par electrolyse sur d'autres metaux: acier inoxydable, cuivre, molybdene, nickel, tantale, titane, kovar, tungstene et beryllium. Nous avons elabore plusieurs types de chambres a fission servant au demarrage des reacteurs: un type de performances moyennes actuellement utilise dans les piles francaises un type a haute sensibilite un type a haute temperature qui a fonctionne jusqu'a 600 deg. C. En ce qui concerne les chambres a bore, nous avons etudie les perturbations apportees dans les mesures par l'exposition des chambres a d'importants flux de neutrons et a un rayonnement {gamma} intense. Cette exposition produit une modification des proprietes des materiaux constitutifs et la production dans les chambres d'un bruit de fond qui peut gener considerablement les mesures neutroniques. Nous avons montre que la technique de compensation permettait de limiter l'importance de ce bruit de fond et d'augmenter ainsi la plage de fonctionnement des

  4. Nuclear Safety Charter; Charte Surete Nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    The AREVA 'Values Charter' reaffirmed the priority that must be given to the requirement for a very high level of safety, which applies in particular to the nuclear field. The purpose of this Nuclear Safety Charter is to set forth the group's commitments in the field of nuclear safety and radiation protection so as to ensure that this requirement is met throughout the life cycle of the facilities. It should enable each of us, in carrying out our duties, to commit to this requirement personally, for the company, and for all stakeholders. These commitments are anchored in organizational and action principles and in complete transparency. They build on a safety culture shared by all personnel and maintained by periodic refresher training. They are implemented through Safety, Health, and Environmental management systems. The purpose of these commitments, beyond strict compliance with the laws and regulations in force in countries in which we operate as a group, is to foster a continuous improvement initiative aimed at continually enhancing our overall performance as a group. Content: 1 - Organization: responsibility of the group's executive management and subsidiaries, prime responsibility of the operator, a system of clearly defined responsibilities that draws on skilled support and on independent control of operating personnel, the general inspectorate: a shared expertise and an independent control of the operating organization, an organization that can be adapted for emergency management. 2 - Action principles: nuclear safety applies to every stage in the plant life cycle, lessons learned are analyzed and capitalized through the continuous improvement initiative, analyzing risks in advance is the basis of Areva's safety culture, employees are empowered to improve nuclear Safety, the group is committed to a voluntary radiation protection initiative And a sustained effort in reducing waste and effluent from facility Operations, employees and subcontractors are treated alike, and a high level Of know-how is supported by training and skills maintenance. 3 - Transparency and reporting: Areva endeavors to provide reliable and relevant information enabling an objective assessment of the status of nuclear safety in its facilities (incident reporting, annual report of the general inspectorate, annual reporting on occupational safety during nuclear facility operations). 4 - Glossary.

  5. Nuclear policy Council; Conseil de politique nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-02-09

    This document contains a set of statement about the French nuclear policy and the different measures and actions undertaken by the main actors of the nuclear sector (EDF, CEA, AREVA, and so on) and official bodies. Different topics are thus addressed: sector competitiveness, security and safety strengthening, works aimed at reactor life extension, costs of the electronuclear sector, installation safety complementary assessment, and evolution of the existing nuclear fleet

  6. The nuclear threat; La menace nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Tertrais, Bruno

    2011-01-26

    For a long time, a small group of big powers has been the only holder of nuclear weapons (US, USSR, Great Britain, France and China). Since then, new weapons have come out on the geopolitical scene: Israel, India, Pakistan, and some others remain uncertain and generate a worrying atmosphere (North Korea, Iran..). But what is the real risk with nuclear proliferation? Should we dread about it? Is nuclear terrorism a real threat? What are the political stakes of nuclear weapons? Is disarmament a real solution? These are some of the questions that the author answers in a precise and clear manner in this book. Contents: 1 - from monopoly to proliferation: who owns nuclear weapons today, why is it so coveted, is it easy to make one?; 2 - the newcomers: what do we really know about the Iranian nuclear programme, Iran and North Korea: between negotiation and confrontation; 3 - international control and regulation: do we have reliable information, how do we know what we know, Iraq: was there a 'lie' somewhere, who are the states who have renounced nuclear weapons?; 4 - the future: is there still a nuclear warfare risk, what if Pakistani weapons fall into islamic hands, is nuclear terrorism a fantasy or a real risk?

  7. Nuclear Magnetic Resonance imaging; Resonance magnetique nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Thibierge, M.; Sevestre, L.; Slupecki, P. [Centre Hospitalier de Charleville-Mezieres, 08 (France)

    1998-06-01

    After many years of low profile business in the USA, MRI is back. Improvements are focused on high field magnets and on low field magnets. The former, are dedicated to high quality imaging. The new scanners are more and more efficient because of the spreading use of real time imaging. They can do now, procedures that just could not be imagined some years ago. Vascular imaging is done routinely. Abdominal imaging in apnea of EPI, perfusion and diffusion imaging, and, last not least, all the field of functional imaging are on the verge of coming out. The new magnets unveiled in 1997 are lighter, smaller, more, user friendly, less impressive for patients subject to claustrophobia. They also need less helium to operate and less space to be sited. The latter, are dedicated to interventional procedures. The new magnets are wide opened and a lot of companies show off. Though Picker unveiled a new light superconductive 0.5 Tesla magnet, it seems that this kind of machines are about to disappear. No significant progress was noticed in the field of dedicated MRI devices. Some features can be highlighted: the new Siemens short bore and its table integrates the Panoramic Array Coil Concept. It will allow simultaneous scanning with up to four coils; the excellent homogeneity of the new Picker magnet that will allow spectroscopy at 1 Tesla; the twin gradients of the Elscint Prisma that will open the field of microscopy MRI; the Philips `floppy gradients` that could speed up 4 or 6 times, the time needed for imaging; some new sequences sensitive to temperature are studied as WIP; a lot of work is achieved on 3 or 4 Tesla scanners etc. (author)

  8. Nuclear Safety. 1997; Surete Nucleaire. 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-01-19

    A quick review of the nuclear safety at EDF may be summarized as follows: - the nuclear safety at EDF maintains at a rather good standard; - none of the incidents that took place has had any direct impact upon safety; - the availability remained good; - initiation of the floor 4 reactor generation (N4 unit - 1450 MW) ensued without major difficulties (the Civaux 1 NPP has been coupled to the power network at 24 december 1997); - the analysis of the incidents interesting from the safety point of view presents many similarities with earlier ones. Significant progress has been recorded in promoting actively and directly a safe operation by making visible, evident and concrete the exertion of the nuclear operation responsibility and its control by the hierarchy. The report develops the following chapters and subjects: 1. An overview on 1997; 1.1. The technical issues of the nuclear sector; 1.2. General performances in safety; 1.3. The main incidents; 1.4. Wastes and radiation protection; 2. Nuclear safety management; 2.1. Dynamics and results; 2.2. Ameliorations to be consolidated; 3. Other important issues in safety; 3.1. Probabilistic safety studies; 3.2. Approach for safety re-evaluation; 3.3. The network safety; 3.4. Crisis management; 3.5. The Lifetime program; 3.6. PWR; 3.7. Documentation; 3.8. Competence; 4. Safety management in the future; 4.1. An open future; 4.2. The fast neutron NPP at Creys-Malville; 4.3. Stabilization of the PWR reference frame; 4.4. Implementing the EURATOM directive regarding the radiation protection standards; 4.5. Development of biomedical research and epidemiological studies; 4.6. New regulations concerning the liquid and gaseous effluents; 5. Visions of an open future; 5.1. Alternative views upon safety ay EDF; 5.2. Safety authority; 5.3. International considerations; 5.4. What happens abroad; 5.5. References from non-nuclear domain. Four appendices are added referring to policy of safety management, policy of human factors in NPPs, technical incidents, and human factor incidents.

  9. The Fukushima accident; Accident nucleaire a Fukushima

    Energy Technology Data Exchange (ETDEWEB)

    Delbecq, D.

    2012-02-15

    The Fukushima accident is characterized by a sequence of natural disasters: earthquake and tsunamis that deprived simultaneously 3 reactors from cooling and electrical power for quite a long time. A series of hydrogen explosion has added to the mess. Experts agree to say that certainly nuclear fuel has melt to form corium in all 3 reactors. The accident has contaminated tens of thousand acres of land around the plant and has jeopardized local coastal fishery. The human toll is unexpectedly low: no direct casualty in the population but several suicides among the people that was forced to leave their home. 5 people from the plant staff died certainly from the consequences of the tsunami. (A.C.)

  10. Nucleaire et Energies Nr 66 - July 2015

    International Nuclear Information System (INIS)

    Lenail, Bernard; Ducroux, Guy; Salanave, Jean-Luc; Seyve, Claude; Simonnet, Jacques; Justin, Francois; Darricau, Aime; Raisonnier, Daniele

    2015-07-01

    After a first article recalling the creation of Areva and difficulties faced by this company which resulted in some kind of backward step, two articles address evolutions in the energy sector: an overview of recent evolutions (USA to become the first oil producer in the world, the OPEC policy, the distribution of nuclear energy production in the world, world consumption in 2014, the French law on energy transition, the dilemma associated with energy transition in Germany, regulated gas prices in France), and a discussion of the perspective for electricity by 2050 (100 per cent renewable? And why not 100 per cent nuclear?). Four articles concern nuclear activities: recent events in the mining and fuel fabrication sectors (an uranium bank in Kazakhstan, contract for Areva in Ukraine, uranium enrichment in South Korea, Saudi Arabia, India, China, Japan, USA), recent events regarding nuclear reactors (in France, UK, Sweden, Czech Republic, Russia, Turkey, South Korea), overview of activities and events related to the back-end of the fuel cycle (in France, Germany, China, USA and Japan), and a presentation of Savannah River MFFF plant (MOX Fuel Fabrication Facility). Two article address issues related to nuclear and society: a discussion on the possibility to eat irradiated food products, and the issue of the Iranian nuclear industry with respect to non-proliferation. A last article briefly discusses some terminological confusion between energy and electricity, and between produced energy and available power

  11. Nuclear reactor (1960); Reacteurs nucleaires (1960)

    Energy Technology Data Exchange (ETDEWEB)

    Maillard, M.L. [Commissariat a l' Energie Atomique, Saclay (France).Centre d' Etudes Nucleaires; Leo, M.B. [Electricite de France (EDF), 75 - Paris (France)

    1960-07-01

    The first French plutonium-making reactors G1, G2 and G3 built at Marcoule research center are linked to a power plant. The G1 electrical output does not offset the energy needed for operating this reactor. On the contrary, reactors G2 and G3 will each generate a net power of 25 to 30 MW, which will go into the EDF grid. This power is relatively small, but the information obtained from operation is great and will be helpful for starting up the power reactor EDF1, EDF2 and EDF3. The paper describes how, previous to any starting-up operation, the tests performed, especially those concerned with the power plant and the pressure vessel, have helped to bring the commissioning date closer. (author) [French] Les premiers reacteurs industriels plutonigenes francais G1 - G2 - G3 du Centre de Marcoule comportent une installation de recuperation d'energie. La production d'electricite de G1 ne compense pas l'energie depensee par ailleurs pour le fonctionnement de l'ensemble, par contre, G2 et G3 doivent fournir chacun une puissance de 25 a 30 MW au reseau national d'Electricite de France. Cette puissance est modeste, mais l'experience acquise grace a ces reacteurs est tres grande et c'est grace a elle qu'il nous sera possible de mettre en exploitation les reacteurs energetiques EDF1 - EDF2 - EDF3. Le memoire decrit comment, avant tout demarrage du reacteur, les essais effectues, en particulier ceux concernant l'installation de recuperation d'energie et le caisson, ont permis d'abreger la phase de montee en puissance. (auteur)

  12. Nucleaire et Energies Nr 68 - June 2016

    International Nuclear Information System (INIS)

    Lenail, Bernard; Ducroux, Guy; Seyve, Claude; Simonnet, Jacques; Dupont, Jean-Francois; Salanave, Jean-Luc; Justin, Francois; Greneche, Dominique; Lepine, Gerard; Raisonnier, Daniele

    2016-06-01

    After a first article which comments the situation of EDF which is a serious matter of concern, notably due to the current context for the energy sector and market, and which notably comments the issue of the Hinkley Point project, an article proposes an overview of recent evolutions (oil price recent evolutions, perspectives for gas and coal, the abundance and availability of hydroelectric energy). Three articles concern nuclear activities: recent events about reactors (EU policy, decisions, projects and events in Switzerland, Sweden, UK about Hinkley Point, Fessenheim, Chernobyl, Poland, Europe about reactor lifetime extension, Russia, in Saudi Arabia and South Korea about the Korean APR-1400 technology, in Bangladesh, in India, Japan and USA), about the back-end of the fuel cycle and decommissioning activities (brief focus on the Cigeo project, foreign storages, discussion of the warehousing-transport issue, dismantling activities in France, recycling in France, Russia, China, Taiwan and the UK, evolution of the MFFF plant in Savannah River), and a comment of the main qualities of nuclear energy. Articles comment issues concerning the relationship between nuclear and society with a comment on the French approach (nuclear and precaution principle, anti-nuclear position of French media, crucial role of operators for nuclear safety), and a comment on the evolution of human lifetime expectation statistics in France and its possible relationship with technology when taking accidents related to energy sources into account. An article analyses the German situation with respect to energy. A last article briefly discusses some terminological confusion between energy and electricity, and between produced energy and available power

  13. Nuclear wastes management; Gestion des dechets nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    This document is the proceedings of the debate that took place at the French Senate on April 13, 2005 about the long-term French policy of radioactive wastes management. The different points tackled during the debate concern: the 3 axes of research of the 1991 law, the public acceptance about the implementation of repositories, the regional economic impact, the cost and financing, the lack of experience feedback, the reversibility or irreversibility of the storage, the share of nuclear energy in the sustainable development policy, the European Pressurized Reactor (EPR) project, the privatization of Electricite de France (EdF) etc. (J.S.)

  14. The nuclear refugees; Les refugies du nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Linton, M.

    2011-06-15

    The authors propose a report on the various situations of people who had to be evacuated after the Fukushima accident. Along with examples of people who left their homes with taking with them a single object, the authors describe and comment how this evacuation occurred, the problems faced by the authorities for refugee reception and accommodation. This evacuation has been either organised or spontaneous. Hospitals had to be evacuated as well. Then, local authorities faced food shortage. Some animals have been saved, other starved to death. Dead animals are covered with lime. Dead bodies are decontaminated before being given back to families. Tests are regularly performed to assess people contamination. A second article discussed the bad news concerning the different Fukushima reactors with their melted cores. The geophysical aspects of the earthquake are evoked in a last article

  15. Contribution to the experimental survey of the nuclear isomerism. Application of the deferred coincidences method to research and to the survey of metastable states of short period; Contribution a l'etude experimentale de l'isomerie nucleaire. Application de la methode des coincidences differees a la recherche et a l'etude d'etats metastables de periode courte

    Energy Technology Data Exchange (ETDEWEB)

    Ballini, R. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1953-06-15

    Various methods of the physics brought many informations on the nuclear elements which one can arrange some ponderable quantities, what is the case of the steady elements and some, unsteady elements, as most of natural radioelements. On the other hand, elements of shorter life duration, and notably those that are carried to an excited state, are more badly known, and one can get information to their consideration that by the mediator of the properties of the transitions that they undergo, when they give birth has best-known nuclear cash: among these transitions represent the isomeric transitions. The goal of this work is the survey of the isomeric transitions from metastable states of short period, included in the domain of the microsecond to some milliseconds. The method of the deferred coincidences has been put to the point and applied in this goal while using the advantages of the selectors to several channels, under two main aspects where the device to several channels was either a selector of time, either a selector of amplitudes. This method served to study the working of Geiger-Muller counter and to measure with precision the period of {sup 181}Ta{sup *} in of the varied experimental conditions. The adopted value is 17,2 {+-}0,2 {mu}s. This work also found an immediate practical application to the setting in evidence of very weak quantities of hafnium in zirconium, of which it constitutes a tenacious and difficult impurity to analyze by the ordinary ways. (M.B.) [French] Les diverses methodes de la physique ont apporte de nombreux renseignements sur les especes nucleaires dont on peut disposer en quantites ponderables, ce qui est le cas des especes stables et de certaines especes instables, comme la plupart des radioelements naturels. Par contre, les noyaux de duree de vie plus courte, et notamment ceux qui sont portes a un etat excite, sont plus mal connus, et on ne peut obtenir de renseignements a leur egard que par l'intermediaire des proprietes des

  16. Contribution to the study of time-resolution in pulse electronics for nuclear physics: phase control circuits; Contribution a l'etude de la resolution en temps de l'electronique impulsionnelle pour physique nucleaire: les circuits de mise en phase

    Energy Technology Data Exchange (ETDEWEB)

    Cortet, J.P. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1969-07-01

    Phase control circuits make it possible to improve quite markedly the time resolution in pulse electronics. They replace a random pulse, of which the time of arrival with respect to a reference zero is being measured, by another pulse whose phase is well determined with respect to that, of a clock taken as reference. The time spectrum of the output, delayed, can always be situated inside channels of width {delta}T defined by the clock. The time statistics of the events analyzed is always correct even if the transition time for the circuits defining the channels represents a large fraction of {delta}T: the coding of the time becomes perfect, The phase control circuits, used in precision chronometry, are widely applied in Nuclear Physics since the lime spectra obtained are representative, indirectly, of certain values which are required to be measured with great accuracy. A description is given of: the constitution and operation of phase control circuits; a chain with automatic analysis and automatic reading, built for testing these circuits. Finally the measurement results are given. (author) [French] Les circuits de mise en phase permettent d'ameliorer notablement la resolution en temps de l'electronique impulsionnelle. Ils substituent a une impulsion aleatoire, dont on cherche a mesurer l'instant d'arrivee par rapport a un instant pris pour origine, une autre impulsion dont la phase est bien determinee par rapport a celle d'une horloge prise comme reference. Le spectre temporel de sortie, retarde, peut toujours etre situe a l'interieur des canaux de largeur {delta}T, definis par l'horloge. La statistique temporelle des evenements analyses est toujours correcte, meme si la duree de transition des circuits definissant les canaux represente une grande fraction de {delta}T: le codage de temps devient parfait. Les circuits de mise en phase, utilises en chronometrie fine, sont tres employes en Physique Nucleaire car les spectres

  17. La persistance environnementale de médicaments : Effluents hospitaliers et persistance environnementale de médicaments et de bactéries pathogènes

    OpenAIRE

    Labanowski, Jérome; Laurent, Elodie; Mondamert, Leslie

    2013-01-01

    National audience; Étant donné que les stations d’épuration (STEP) n’éliminent que partiellement les molécules à usage de médicaments ainsi que les micro‐organismes, la non‐prise en compte de la spécificité des effluents hospitaliers constitue un danger de contamination des ressources aquatiques ayant une incidence sur la santé humaine.Afin d’y remédier, une réflexion sur la réglementation des rejets de médicaments a été entreprise. Un Plan national sur les résidus de médicaments (PNRM) dans ...

  18. Elementos para a construção de uma agenda para a gestão ambiental da área de influência do porto de Itaguaí - RJ Éléments pour la construction d´un agenda de gestion environnementale dans l´aire d´influence du port de Itaguaí-RJ Elements for the elaboration of an environmental management agenda in the local hinterland of the port of Itaguaí - RJ

    Directory of Open Access Journals (Sweden)

    Paulo Gusmão

    2012-06-01

    éseaux logistiques conditionne le dynamisme de diverses régions de l´Etat, en particulier sa zone cotière. Les évaluations faîtes à ce propos mettent le plus souvent l´accent sur les résultats que ces investissements ont et auront sur le processus de «réchauffement de l´économie fluminense». Néanmoins, certains observateurs se preocuppent des effets de ces investissements en termes de re-aménagement et développement du territoire. Quelques unes de ces préocupations sont liées à la basse capacité de réponse démontrée par le Pouvoir Public – en particulier les gouvernements locaux –confronté à un scénario conditionné par les décisions entrepreunariales formulées par un petit nombre de grandes corporations, comme c´est le cas autour du port d´Itaguai. Le présent article attire l´attention sur la nécessité d´agréger à ce débat la possibilité de création d´un espace institutionnel dédié à la formulation de politiques publiques négociées pour la gestion environnementale dans l´aire d´influence du port d´Itaguai, de manière à favoriser les dimensions sociales, environnementales et spatiales de ces dernières.Since approximately the year 2000 State of Rio de Janeiro is experiencing corporate investments which volume never had taken place before in its history. These investments are mainly associated to the oil & gas industry and to the steel industry, with an important participation of port and naval industry activities, as well as a dense pipeline network. The resulting facilities and their logistics drive the territorial dynamics of various regions within the state, especially of the coastal zone. The evaluations made on this respect focus more frequently the results that such investments are (or will be generating concerning the “recovery of the economy of the State of Rio de Janeiro”. However, the consequences of such agenda concerning issues such as territorial development have been pointed out as subjects deserving more

  19. Effect of cobalt-60 {gamma} radiation and of thermal neutrons on high resistance P and N silicon. Possibility of obtaining a nuclear compensation for P type silicon; Effects du rayonnement {gamma} du cobalt 60 et de neutrons thermiques sur du silicium P et N de haute resistivite. Possibilite de realiser une compensation nucleaire d'un silicium du type P

    Energy Technology Data Exchange (ETDEWEB)

    Messier, J. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1965-11-01

    Type P silicon has been compensated by the production of a controlled and uniform amount of donor atoms ({sup 31}P) using thermal neutrons to bring about a nuclear transformation. It is shown that it is possible in this way to reduce by a factor of about one hundred the overall concentration of residual ionised impurities in the purest crystals obtained by floating zone purification (2 x 10{sup 12} atoms/cm{sup 3}). The degree compensation obtained is limited by the initial inhomogeneity of acceptor impurities which have to be compensated. Lattice defects which still remain after prolonged annealings reduce the life-time of the material to about 10 {mu}s approximately. Particle detectors having thicknesses of 2 to 5 mm have been built by this process; they give good results, particularly at low temperatures. A study has also been made of the number and of the nature of lattice defects produced by thermal neutrons in high resistivity P and N type crystals. These defects have been compared to those produced by {gamma} rays from {sup 60}Co. A discussion is given of the validity of the Wertheim model concerning pronounced recombination at low temperatures (77 deg. K - 300 deg. K) of primary defect-interstitial pairs. The nature of the defects introducing energy levels into the lower half of the forbidden band has been studied. (author) [French] On a compense du silicium de type P en produisant, au moyen de neutrons thermiques, par transmutation nucleaire une quantite controlee et uniforme d'atomes donneurs ({sup 31}P). On montre qu'on peut ainsi reduire de cent fois environ la densite nette d'impuretes ionisees residuelles subsistant dans les cristaux les plus purs obtenus par purification par zone flottante (2.10{sup 12} atomes/cm{sup 3}). Le degre de compensation obtenu est limite par i'inhomogeneite initiale des impuretes acceptrices a compenser. Des defauts de reseau qui subsistent meme apres des recuits prolonges reduisent la duree de vie du

  20. Jean-François Huchet, La crise environnementale en Chine

    OpenAIRE

    Dussaux, Maryvonne

    2017-01-01

    « Air-pocalypse » est le nom donné aux épisodes de pollution de l’air que connaît Pékin depuis 2013. Comme le smog de Londres en 1952, il révèle les limites du modèle de développement économique et les conséquences des choix énergétiques. Le premier intérêt de cet ouvrage est de nous montrer la face cachée du modèle chinois qui fait encore rêver les partisans d’une croissance économique à tout prix. Jean-François Huchet, professeur des universités spécialisé dans l’économie chinoise et asiati...

  1. Pauvreté et vulnérabilité environnementale dans les bidonvilles en ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Journal supplement features 10 years of West African health systems research. In the wake of the devastating Ebola virus outbreak in 2014, increased attention has been paid to West Africa's poorly functioning health systems. View moreJournal supplement features 10 years of West African health systems research ...

  2. Design de microlaser moyen infrarouge pour la biomédecine et la surveillance environnementale

    OpenAIRE

    Palma , Giuseppe

    2017-01-01

    Optical micro-resonators represent one of the most important devices in photonics. A special kind is constituted by the WGM resonators, i.e. devices with circular symmetry such as spheres, rings, disks and toroids. They are characterized by very small dimensions, exceptionally quality factor and very low modal volume becoming a valuable alternative to the traditional optical micro-resonators, such as Fabry-Pérot cavities. These devices allow applications in several fields, such as sensing, op...

  3. Environmental evaluation and wind energy in France; Evaluation environnementale et energie eolienne en France

    Energy Technology Data Exchange (ETDEWEB)

    Degryse, M.C. [Gouvernement de France, Paris (France). Direction generale de l' energie et du Climat, Ministere de l' ecologie, de l' energie, du developpement durable et de l' amenagement du territoire

    2009-04-15

    The development of renewable energy, particularly wind energy, began in France nearly 30 years ago to conserve fossil fuels and reduce greenhouse gas emissions. The development of wind turbines was governed by administrative laws and environmental impact studies of ecosystems, fauna, flora and natural habitats, as well as physical layouts and human activities. The environmental impact studies involved site characterization as well as the direct and indirect impact on the environment in the short- and long-term. These procedures proved essential in the decision making process for environmental planning and for local development. The French Ministry of ecology, energy and sustainable development established guidelines in 2005 to ensure proper development. In November 2008, France established an environmental policy that stipulates that 23 per cent of the energy consumed in 2020 will be derived from renewable energy sources, and that the total onshore and offshore capacity will be 25,000 MW. At the end of 2008, France's installed wind power capacity was 3,095 MW. This plan of action focuses on environmental quality. Each development will have to consider the landscape, air quality, water quality and biodiversity. France's renewable energy plan stipulates the use of wind turbines to avoid over-development of the area, and to prevent damage to landscape and the quality of life for residents. The impact of offshore wind power development is currently being analyzed in an effort to promote the development of sustainable maritime activities for the environment. 4 refs., 1 tab., 3 figs.

  4. Élaboration d'une politique environnementale reposant sur des ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Compte tenu de cette situation nouvelle et en évolution rapide, le CRDI fournit un soutien financier à l'Université Simon Fraser afin de lui permettre d'aider un réseau de jeunes environnementalistes birmans à terminer des recherches qui viendront enrichir les politiques de développement et les ... Rodriguez, Mr. Edgard ...

  5. Environmental policy and public research in Germany; Politique et recherche publique environnementales en Allemange

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-12-01

    The german government is highly engaged in the environmental protection at the economic, sociological and industrial level of the society. This document details the environmental political and scientific context of Germany. Facing the multiplicity of the concerned thematic, only particular topics are presented. Then a particular attention is done to the environmental research in the climatic change context with studies on the climate, the ecosystems protection, the energy, the biodiversity and the geoscience. (A.L.B.)

  6. Dynamiques Territoriales et Proximité Environnementale : le cas du Risque d'Inondation

    Directory of Open Access Journals (Sweden)

    Christophe Beaurain

    2006-05-01

    Full Text Available Si l'approche par la proximité a préférentiellement été appliquée aux formes productives localisées, elle n'en demeure pas moins féconde pour analyser les modes de coordination entre acteurs se situant en marge du monde de la production. Tel est l'objet de cet article qui explore les formes de construction territoriale entre différentes collectivités confrontées à une préoccupation commune : le risque d'inondation. Outre cet aspect analytique, cette contribution tente de montrer en quoi l'élargissement de l'examen des formes de proximité à des acteurs et objets nouveaux (environnement, risques, collectivités territoriales et ménages suscite une nouvelle actualité concernant les formes de proximité géographique.Despite the dominance of localised productive forms concerns, a growing number of contributions tend to apply the proximity approach to multiple fields. This is particularly the case when territorial construction is concerned, that involves consumers, municipalities or local governments. This paper explores forms of local co-ordination between different municipalities confronted with a common preoccupation: the flood hazard. Besides this analytic aspect, our second objective is to demonstrate that the integration of new actors and objects within the proximity field (environment, hazards, municipalities and households arouses a topical enlightenment as regards the importance of forms of geographical proximity from a co-ordination perspective.

  7. Étude de la durabilité économique et environnementale de la ...

    African Journals Online (AJOL)

    . sepium, the yield of cassava of the introduced variety Yavo was 40 t/ha compared to 13 t/ha in the traditional. The plant architecture of the new systems allowed a good soil cover, thus reducing the frequency of weeding, done traditionally by ...

  8. Concentrations en gaz dans la glace de mer: développements techniques et implications environnementales

    OpenAIRE

    Verbeke, Véronique

    2005-01-01

    La glace de mer couvre jusqu’à 6% de la surface de notre planète. Autour du continent Antarctique, sa superficie varie entre 3.8 et 19 millions de km² (en février et septembre respectivement). Cette superficie présente des variations interannuelles. En parallèle, une évolution de la superficie de la glace de mer a également pour origine le réchauffement climatique global, très médiatisé à l’heure actuelle. Dans ce contexte, et étant donné le rôle que joue la banquise au sein de l’Océan Austra...

  9. Programme d'économie environnementale de l'Amérique latine et ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Canada-Latin America and Caribbean Zika Virus Research Program. A new funding opportunity on Zika virus is responding to the virus outbreak and the health threat it represents for the affected populations in the hardest hit countries in Latin America and the... View moreCanada-Latin America and Caribbean Zika Virus ...

  10. The environmental policy of companies: evolutions and perspectives; La politique environnementale des entreprises: evolutions et perspectives

    Energy Technology Data Exchange (ETDEWEB)

    Demarq, F.; Martin, V.

    1999-07-01

    This document presents the stakes of the environmental management in French companies and the role played by the French agency of environment and energy mastery (ADEME) in adapting the French environmental plan, developed by the public authorities, to the small and medium-size companies and industries. The risks of environmental impact are numerous and linked with a bad mastery of the consumption of raw materials, energy and water and with a bad control of waste effluents (impact on ecosystems and on public health). In order to facilitate the application of the environmental plan, the international standard organization (ISO) has developed the series of ISO 14000 standards. This work was carried out by the technical committee 207 which has developed a common approach for the environmental management of processes and products. This paper focusses on the ISO 14001 standard, on its philosophy and on its accreditation procedure, and on the application of the European eco-audit regulation for the promotion of the continuous improvement of the environmental performances of companies. The Ademe has developed the 'company environment plan' (PEE) in order to define, grade and quantify the objectives of an environmental policy at the scale of companies. Different types of environmental indicators can be defined to characterize the environmental impact of the activities of companies and reported in an 'environmental report' in order to precise the financial effort made by companies to respect the regulations or to evaluate the possible financial consequences of the non-respect of the environmental regulations. (J.S.)

  11. Élaboration d'une politique environnementale reposant sur des ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Les chercheurs se diviseront en groupes pour se pencher sur des problèmes environnementaux précis et pour produire, principalement au moyen de données existantes, des rapports qui seront regroupés sous forme de " tour d'horizon annuel " au sujet l'environnement. De plus, le projet encouragera et appuiera la ...

  12. S'adapter à une nouvelle réalité environnementale au Maroc | CRDI ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    2 août 2016 ... Des restaurants et cafés sur les rives de l'Ourika, au Maroc (à gauche). En temps de crue, le flux puissant de cette rivière peut se révéler dangereux (à droite). Alanna Mitchell, Canadian Geographic. Alors que les défis liés aux changements climatiques et à la dégradation de l'environnement ne cessent ...

  13. Étude de la durabilité économique et environnementale de la ...

    African Journals Online (AJOL)

    SARAH

    4 févr. 2014 ... cacao, 3 FCFA (0,006258 dollar) pour le café et 1,5. FCFA (0,003129 dollar) pour le manioc (cas de la culture traditionnelle du manioc). Toutefois, les ratios rencontrés dans la culture en couloirs ont été proches des cultures de rente que sont le cacao et le café. Avec les nouveaux systèmes de culture, le ...

  14. Nouvelles approches pour l'évaluation environnementale des biocarburants avancés

    OpenAIRE

    Menten, Fabio Machado

    2013-01-01

    Life Cycle Assessment (LCA) has been used in legislative texts in Europe and in the United States to quantify the benefits of biofuel production in terms of greenhouse gas (GHG) emissions reductions and energy security. In this thesis, we propose two independent approaches to investigate the compliance of advanced biofuels (cellulosic ethanol, Biomass to liquids - BTL, microalgae FAME/HVO) production with these objectives. The first one is a meta- analysis (literature synthesis) of LCA studie...

  15. CARACTERISATIONS ENERGETIQUE ET ENVIRONNEMENTALE DE LA BIOMETHANISATION PILOTE APPLIQUEE AUX DEJECTIONS ANIMALES

    Directory of Open Access Journals (Sweden)

    Y. M’SADAK

    2012-12-01

    Full Text Available This study interested in monitoring energy (quantitative and qualitative and environmental performances at various pilot digesters of animal biomass.Main results are:The combined effect of the diet and the substrate on quantitative experimental productivity of gas is in favor of poultry digesters continuously fed. The biogas produced has better potential especially in industry. The environmental evaluation virtually shows a certain interest on the depollution for industrial digester.

  16. Programme d'économie environnementale de l'Amérique latine et ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Au nombre des activités à venir, on peut s'attendre à l'octroi de subventions de recherche par voie de concours, à des cours de brève durée sur mesure, à des ateliers ainsi qu'à des activités de réseautage et de rayonnement. Ces activités contribueront directement à la réalisation de l'objectif de développement à long ...

  17. Evaluation environnementale du véhicule électrique : méthodologies et application

    OpenAIRE

    Picherit , Marie-Lou

    2010-01-01

    Today, the electric vehicle is seen as a potent substitute to the internal combustion engine vehicle, aiming at reducing consumption of fossil fuels, and emissions of local pollutants and greenhouse gases. The assessment of strengths and weaknesses of this technology from the environmental viewpoint is currently limited, especially considering the lack of experiment feedbacks.The objective of this research is to offer an approach combining a deep understanding of the studied vehicle (through ...

  18. Programme d'économie environnementale de l'Amérique latine et ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    GrowInclusive : la plateforme tant attendue est en construction. Le CRDI, en partenariat avec le Forum économique mondial, construit une plateforme pour les solutions de croissance inclusive. Voir davantageGrowInclusive : la plateforme tant attendue est en construction ...

  19. Nuclear, phantasm and emotions; Nucleaire, fantasmes et emotions

    Energy Technology Data Exchange (ETDEWEB)

    Michel, A

    2009-03-15

    Nuclear energy as it appears in novels and films gives an image that can influence our judgment. If the phantasms amplified by the antinuclear groups can influence the public opinion, so the communication on the nuclear subjects must be more emotional to touch the general public. Through different images carried in comic books or in fiction novels it is the anxiety that is privileged. If nuclear industry must propose a rational and well informed approach that gives value to its experience, this must not prevent to consider a more emotional perspective. (N.C.)

  20. The 9. European nuclear conference; La 9. conference nucleaire europeenne

    Energy Technology Data Exchange (ETDEWEB)

    Maurel, V.; Lewis, D.; Smirnov, V.P.; Gutierrez, J.E.; Paulin, Ph.; Markov, D.V.; Smirnov, A.V.; Polenok, V.S.; Horhoianu, G.; Olteanu, G.; Van der Schaaf, B.; Gavillet, D.; Lapena, J.; Ohms, C.; Roth, A.; Van Dyck, St.; Mardon, J.P.; Thomas, A.; Cipiere, M.F.; Faidy, C.; Hedin, F.; Delnondedieu, M.; Chassignole, B.; Doudet, L.; Dupond, O.; Kang, K.; Park, K.; Kim, K.; Ha, J.; Hoon-Seok, Jung; Yong-koo, Lee; Kwang-Ho, Kim; Seungwoo, Paek; Heui-Joo, Choi; Do-Hee, Ahn; Kwang-Rag, Kim; Minsoo, Lee; Sung-Paal, Yim; Hongsuk, Chung; Detroux, P.; Meessen, O.; Defloor, J.; Lars-Erik, Holm; Barescut, J.C.; Vacquier, B.; Laurier, D.; Caer, S.; Quesne, B.; Oudalova, A.; Geras' kin, St.; Dikarev, V.; Dikareva, N.; Chernonog, E.; Yang-Geun, Chung; Gab-Bock, Lee; Sun-Young, Bang; Yong-Sun, Lee; Bolognese-Milsztajn, T.; Frank, D.; Lacoste, V.; Pihet, P.; Lacronique, J.F.; Chauliac, C.; Verwaerde, D.; Pavageau, O.; Zaetta, A.; Varaine, F.; Warin, D.; Hudelot, J.P.; Bioux, Ph.; Klann, R.; Petruzzi, A.; D' auria, F.; Yung Kwon, Jin; Chul Jin, Chol; Mihalache, M.; Radu, V.; Pavelescu, M.; Schneidesch, Ch.R.; Jinzhao, Zhang; Dalleur, J.P.; Nuttin, A.; Meplan, O.; Wilson, J.; Perdu, F.; Campioni, G.; Mounier, C.; Sigrist, J.F.; Laine, Ch.; Broc, D.; Robbe, M.F.; Cariou, Y.; Seok-Kyun, Yoon; Win, Naing; Myung-Hyun, Kim; Kyung, Hee; Fridman, E.; Shwageraus, E.; Galperin, A.; Meplan, O.; Laulan, O.; Mechel-Sendis, F.; Belgaid, M.; Kadem, F.; Amokrane, A.; Hamidouche, T.; El-Khider, Si-Ahmed

    2005-11-15

    This issue gathers the abstracts of the papers presented at the ninth European nuclear conference (ENC-2005). The main part of the conference is split into 20 sessions. These sessions cover all technical aspects of nuclear power, from reactor design to waste management, without forgetting experimental and research reactors, reactor dismantling, economy, resources, safety, radioprotection and education issues. Perspectives of a nuclear renaissance are clearly visible in the world. This renaissance, mainly due to political, economical, societal and ecological factors, is fuelled by scientific and technical progress. This conference was the opportunity to present together these aspects of nuclear power and to analyze their mutual interactions.

  1. Nuclear: how to get off?; Nucleaire: comment en sortir?

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    This study aims to propose actions to get off the nuclear in less than 10 years. The first part is devoted to the energy efficiency: the energy produced by the today electric network, the energy conservation in the ternary, industrial and residential sector. The second part presents an offer of electricity without the nuclear: the renewable energies, the fossil energies, the carbon tax and the nuclear park closure. (A.L.B.)

  2. Bescherming tegen de gevolgen van de nucleaire elektromagnetische impuls

    NARCIS (Netherlands)

    Möhring, F.; Sevat, P.A.A.

    1972-01-01

    Protection against the effects of the nuclear electromagnetic pulse. A nuclear explosion generates a short impulsive electromagnetic field which propagates over the earth radially from the point of explosion. In the explosion zone the electric and magnetic fieldstrengths are high and may damage

  3. Ovarian psammocarcinoma and nuclear medicine; Psammocarcinome ovarien et medecine nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Chalaye, J.; Razzouk-Cadet, M.; Carrier, P.; Girma, A.; Koulibaly, P.M.; Darcourt, J. [Federation inter-hospitaliere, CHU-CAL universitaire de Nice, (France); Cambefort, P. [service de medecine nucleaire, CHU Augustin-Morvan, Nice, (France); Bereder, J.M. [service universitaire de chirurgie digestive, hopital de l' Archet, Nice, (France); Chaborel, J.P. [centre imagerie nucleaire, Mougins, (France)

    2009-05-15

    The calcification of tumors injuries at the T.D.M. is a good indicator of psammoma serous carcinoma. The psammoma injuries fix the {sup 18}F.D.G. at the level of their tumor part and the technetium osseous tracers at the level of their calcified part; They are easily identifiable in nuclear medicine what is useful in the measure where the psammoma serous ovarian carcinoma benefits of a prognosis relatively better than this one of serous ovarian adenocarcinoma. (N.C.)

  4. Ovarian psammocarcinoma and nuclear medicine; Psammocarcinome ovarien et medecine nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Razzouk-Cadet, M.; Carrier, P.; Girma, A.; Koulibaly, P.M.; Darcourt, J. [CHU-CAL Universitaire de Nice, Hopital de l' Archet, Service Universitaire de Medecine Nucleaire, Centre TEP, Federation inter-hospitaliere, 06 - Nice (France); Cambefort, P. [CHU Augustin-Morvan, Service de Medecine Nucleaire, 29 - Brest (France); Bereder, J.M. [Hopital de l' Archet, Service Universitaire de Chirurgie Digestive, 06 - Nice (France); Chaborel, J.P. [Centre Imagerie Nucleaire, 06 - Mougins (France)

    2009-02-15

    We report three cases of ovarian psammocarcinoma, which is a serous adenocarcinoma having psammoma calcifications. The F.D.G. uptake in the psammomatous lesions is due to the tissular part of the lesion and the {sup 99m}Tc labelled agents uptake to its calcified part. Calcifications are detected on CT scans. Therefore, they are relatively simple to diagnose by nuclear medicine which is useful given relatively the better prognosis of the psammomatous ovarian serous carcinoma when compared to the serous one. (authors)

  5. Overview of the Russian nuclear industry; Le panorama nucleaire russe

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-02-15

    In 2004, President Poutine decided to replace the atomic energy ministry (Minatom) by the federal atomic energy agency (Rosatom). Several projects were launched during the next two years which aimed at bringing back Russia to the fore front of the world leaders of nuclear energy use and nuclear technology export. In 2007, Rosatom agency was changed to a public holding company and a new company, named Atomenergoprom, was created which gathers all civil nuclear companies (AtomEnergoMash for the exploitation of power plants, Technabsexport (Tenex) specialized in enrichment or Atomstryexport in charge of export activities). Thus, Rosatom is at the head of all civilian and military nuclear companies, of all research centers, and of all nuclear and radiological safety facilities. In 2006, Russian nuclear power plants supplied 15.8% of the whole power consumption. Russia wishes to develop its nuclear program with the construction of new reactors in order to reach a nuclear electricity share of 25% from now to 2020. This paper presents first the 2007 institutional reform of the Russian atomic sector, and the three sectorial federal programmes: 1 - development of the nuclear energy industrial complex for the 2007-2010 era and up to 2015 (future power plants, nuclear fuel centers and reactor prototypes), 2 - nuclear safety and radioprotection for the 2008-2015 era (waste management, remedial actions, radiation protection), 3 - military program (confidential). Then, the paper presents: the international actions (export of Russian technology, cooperation agreements, non-proliferation), the situation of the existing nuclear park (reactors in operation, stopped, under construction and in project), the fuel cycle activities (production of natural uranium, enrichment, fuel fabrication, spent fuel storage, reprocessing, waste management), the nuclear R and D in Russia, and the nuclear safety authority. (J.S.)

  6. The nuclear: a clean energy; Le nucleaire: une energie propre

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    At the beginning the Nuclear Energy was developed in a context of energy diversification and competitiveness. Today another of its assets shows the interest of this energy source: the nuclear energy is a clean energy which controls the wastes and offers an efficient solution against the atmospheric pollution and the climatic change. These two arguments are developed. (A.L.B.)

  7. Graphites for nuclear applications; Les graphites pour les applications nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Bonal, J.P.; Gosmain, L. [CEA Saclay, Dept. des Materiaux pour le Nucleaire (DMN), Lab. de Microscopie et d' Etudes de l' Endommagement, 91 - Gif-sur-Yvette (France)

    2006-03-15

    Being an excellent neutron moderator, graphite is used as a structural material in many nuclear reactor types. By the end of the 50's, the French gas-cooled reactor development needed manufacturing of a nuclear-grade graphite. Graphite irradiation can lead to in-lattice energy accumulation, dimensional changes and physical properties modification. Moreover, the radiolytic corrosion induced by the coolant (CO{sub 2}) may generate mechanical properties degradation. Today, French gas-cooled reactors are all in their decommissioning phase that requires the knowledge of the radiological inventory of the irradiated graphites. At present time, graphite is still foreseen as a future material for hydrogen production by high temperature gas cooled nuclear plants. In the future, graphite will be the necessary moderator material for high temperature reactors with thermal neutron spectrum dedicated to hydrogen and electricity production. (authors)

  8. Energy: nuclear energy; Energies: l'energie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Lung, M. [Societe Generale pour les Techniques Nouvelles (SGN), 78 - Saint-Quentin-en-Yvelines (France)

    2000-11-01

    Convinced that the nuclear energy will be the cleaner, safer, more economical and more respectful of the environment energy of the future, the author preconizes to study the way it can be implemented, to continue to improve its production, to understand its virtues and to better inform the public. He develops this opinion in the presentation of the principal characteristics of the nuclear energy: technology, radioactive wastes, radiation protection, the plutonium, the nuclear accidents, the proliferation risks, the economics and nuclear energy and competitiveness, development and sustainability. (A.L.B.)

  9. EPR: the nuclear impasse; EPR: l'impasse nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Marillier, F. [Association Ecologiste Greenpeace (France)

    2008-07-01

    The questions relative to the climatic change constitute crucial challenges for the next ten years. In this context the author aims to show how the EPR project illustrates the nuclear french ''autism''. He presents and analyzes the international and environmental impacts of this obsolete technology, as a project useless and dangerous. (A.L.B.)

  10. The nuclear energy; Elements sur l'energie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Leconte, Ph [CEA Saclay, Dir. du Developpement et de l' Innovation Nucleaires (DEN/DDIN), 91 - Gif Sur Yvette (France)

    2001-08-15

    This paper is the lesson provided by the author at the physics summer school. After a recall on the atoms nuclei properties, he explains the nuclear reactor principle, their stability and safety. The fuel cycle is also detailed as the different reactors technologies. The last part deals with the thermonuclear fusion. (A.L.B.)

  11. INIS, CEA and nuclear terminology; INIS, CEA et terminologie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Surmont, J.; Brulet, C.; Constant, A.; Guille, N.; Le Blanc, A.; Mouffron, O.; Anguise, P.; Jouve, J.J

    2007-07-01

    This poster, prepared for the fifth edition of the meetings of scientific and technical information professionals (RPIST, Nancy (France)), presents, first, the INIS information system, its content and coverage, the French participation to this system and the role of the CEA-Saclay as France's official representative for this system. Then it presents the INIS thesaurus with its different levels as a terminological tool for the indexing of documents and for searching documents inside the database. Finally, the very first electronic version of the multilingual thesaurus is introduced. Several national INIS centres, including the CEA-Saclay, have contributed to the translation of lists of new terms and of forbidden terms (synonyms). (J.S.)

  12. Nuclear and sustainable development; Nucleaire et developpement durable

    Energy Technology Data Exchange (ETDEWEB)

    Audebert, P.; Balle, St.; Barandas, Ch.; Basse-Cathalinat, B.; Bellefontaine, E.; Bernard, H.; Bouhand, M.H.; Bourg, D.; Bourgoignon, F.; Bourlat, Y.; Brunet, F.; Buclet, N.; Buquet, N.; Caron, P.; Cartier, M.; Chagneau, E.; Charles, D.; Chateau, G.; Collette, P.; Collignon, A.; Comtesse, Ch.; Crammer, B.; Dasnias, J.; Decroix, G.; Defoy, B.; Delafontaine, E.; Delcroix, V.; Delerue, X.; Demet, M.; Dimmers, G.; Dodivers, S.; Dubigeon, O.; Eimer, M.; Fadin, H.; Foos, J.; Ganiage, D.; Garraud, J.; Girod, J.P.; Gourod, A.; Goussot, D.; Guignard, C.; Heloury, J.; Hondermarck, B.; Hurel, S.; Jeandron, C.; Josse, A.; Lagon, Ch.; Lalleron, Ch.; Laurent, M.; Legrand, H.; Leveau, E

    2006-07-01

    On September 15. and 16., 2004, at Rene Delcourt invitation, President of the C.L.I. of Paluel and Penly, took place the 4. colloquium of the A.N.C.L.I.. Jean Dasnias, new President of the C.L.I., welcomed the colloquium. Hundred of persons participated. The place of the nuclear power in the energy perspectives of tomorrow, its assets and its weaknesses in front of the other energies and within the framework of a sustainable development, are so many subjects which were discussed. The different tackled subjects are: the stakes in the sustainable development; energy perspectives; the reactors of the fourth generation; nuclear power and transparency; sustainable development and I.R.S.N. (N.C.)

  13. Nuclear armament and disarmament; Armement et desarmement nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-05-01

    This document discusses the objectives and the specifications of the non-proliferation treaty, in the framework of the nuclear armament and disarmament. Three chapters are proposed: State of the art; the international agreements and treaties and the United Nation Organization part; debates and forecasts on the proliferation fight, the Pugwash movement and a chronology of the situation. (A.L.B.)

  14. What nuclear industry after Fukushima?; Quel nucleaire apres Fukushima?

    Energy Technology Data Exchange (ETDEWEB)

    Barre, Bertrand [Institut national des sciences et techniques nucleaires, CEA-Saclay, 91191 Gif-sur-Yvette Cedex (France)

    2011-07-01

    Nuclear power experienced a fast growth during the 70's and 80's, but a quasi-stagnation during the 90's. Since the beginning of the 21. century, a so-called renaissance could be witnessed, fuelled by concerns about energy security of supply, volatility of oil and gas prices, fear of an incoming 'peak oil', and, last but not least, the threat of global climate change due to the anthropogenic emissions of greenhouse effect gases. Then, on March 11 2011, a monster earthquake followed by a violent tsunami triggered an accident which all but destroyed four nuclear reactors on the Fukushima-Daiichi site, on the east coast of Honshu, the main Japanese island. There was meltdown in three reactor cores, hydrogen explosions which blew off the upper structures of four reactor buildings, and massive radioactive contamination of a spread of land north-west of the site as well as radioactive releases to the ocean. This accident triggered reactions of various intensities throughout the world, awakening the fears, and questions raised 25 years before by the Chernobyl accident. But the tsunami did not make the fundamentals of the renaissance disappear. After a pause, to fully learn lessons from the accident, the renaissance is likely to start again, all the much since the 'third generation' nuclear plants would have survived unscathed the Fukushima earthquake and tsunami. (author)

  15. Nuclear engineering vocabulary; Vocabulaire de l'ingenierie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-07-01

    The terms, expressions and definitions presented in this booklet come from the works carried out by the French specialized commission of nuclear engineering terminology and neology. This selection of terms cannot be found, in general, in classical dictionaries, or can be found but with a different meaning than the one used in nuclear engineering. All terms and expressions contained in this booklet have been already published in different issues of the Official Journal of the French Republic. This publication makes their use mandatory in replacement of foreign language equivalents inside all government services and public buildings. (J.S.)

  16. Nuclear, uranium, reserves, sustainability, independence; Nucleaire, Uranium, reserves, durabilite, independance

    Energy Technology Data Exchange (ETDEWEB)

    Acket, C

    2007-06-15

    In order to evaluate the energy independence concerning the nuclear energy, the author takes the state of the art about the uranium. He details the fuel needs, the reserves on the base of the today available techniques, the reserves on the base of the future techniques and concludes positively on the energy independence for the nuclear. (A.L.B.)

  17. Nuclear disarmament: the rebound?; Desarmement nucleaire: le rebond?

    Energy Technology Data Exchange (ETDEWEB)

    Durand, D. [Institut de Documentation et de Recherche sur la Paix - I. D. R. P., 93 - Saint-Ouen (France)

    2010-07-01

    The elimination of nuclear weapons is very often considered as a naive and unrealistic utopia, or as an ethical ambition or requirement but with no possible implementation. In this book, the author shades light on some concrete elements of the existing debate between international actors: governments, institutions, but also non-governmental organizations and opinion movements born during the last non-proliferation treaty conference. (J.S.)

  18. Non-nuclear energies; Les energies autres que le nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Nifenecker, H. [Laboratoire de Physique Subatomique et de Cosmologie, IN2P3-CNRS/UJF/INPG, 53 av. des Martyrs, 38026 Grenoble Cedex and Sauvons le Climat (http://www.sauvonsleclimat.org), Grenoble (France)

    2007-07-01

    The different meanings of the word 'energy', as understood by economists, are reviewed and explained. Present rates of consumption of fossil and nuclear fuels are given as well as corresponding reserves and resources. The time left before exhaustion of these reserves is calculated for different energy consumption scenarios. On finds that coal and nuclear only allow to reach the end of this century. Without specific dispositions, the predicted massive use of coal is not compatible with any admissible value of global heating. Thus, we discuss the clean coal techniques, including carbon dioxide capture and storage. One proceeds with the discussion of availability and feasibility of renewable energies, with special attention to electricity production. One distinguishes controllable renewable energies from those which are intermittent. Among the first we find hydroelectricity, biomass, and geothermal and among the second, wind and solar. At world level, hydroelectricity will, most probably, remain the main renewable contributor to electricity production. Photovoltaic is extremely promising for providing villages remote deprived from access to a centralized network. Biomass should be an important source of bio-fuels. Geothermal energy should be an interesting source of low temperature heat. Development of wind energy will be inhibited by the lack of cheap and massive electricity storage; its contribution should not exceed 10% of electricity production. Its present development is totally dependent upon massive public support. A large part of this paper follows chapters of the monograph 'L'energie de demain: technique, environnement, economie', EDP Sciences, 2005. (author)

  19. Climatic change and nuclear energy; Changement climatique et energie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, M

    2000-08-15

    The data presented in the different chapters lead to show that nuclear energy ids not a sustainable energy sources for the following reasons: investments in nuclear energy account financing that lacks to energy efficiency programmes. The nuclear programmes have negative effects such the need of great electric network, the need of highly qualified personnel, the freezing of innovation in the fields of supply and demand, development of small performing units. The countries resort to nuclear energy are among the biggest carbon dioxide emitters, because big size nuclear power plants lead to stimulate electric power consumption instead of inducing its rational use. Nuclear energy produces only electric power then a part of needs concerns heat (or cold) and when it is taken into account nuclear energy loses its advantages to the profit of cogeneration installations. Finally nuclear energy is a dangerous energy source, difficult to control as the accident occurring at Tokai MURA showed it in 1998. The problem of radioactive wastes is not still solved and the nuclear proliferation constitutes one of the most important threat at the international level. (N.C.)

  20. Climatic change and nuclear; Changement climatique et nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, M

    2003-07-01

    One of the main priorities of the WWF is to increase the implementing of solutions relative to the greenhouse effect fight. In this framework the foundation published a study on the nuclear facing the climatic change problem. The following chapters are detailed: the nuclear and the negotiations on the climatic change; the nuclear close; the unrealistic hypothesis of the nuclear forecast; the nuclear facing other energy supplying options; supplying efficiency for heating, electric power, gas and renewable energies; the consumption efficiency facing the nuclear; the economical aspects; the deregulation effect; the political aspects; the nuclear AND the greenhouse effect. (A.L.B.)

  1. New reactor concepts; Nieuwe rectorconcepten - nouveaux reacteurs nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Meskens, G.; Govaerts, P.; Baugnet, J.-M.; Delbrassine, A

    1998-11-01

    The document gives a summary of new nuclear reactor concepts from a technological point of view. Belgium supports the development of the European Pressurized-Water Reactor, which is an evolutionary concept based on the European experience in Pressurized-Water Reactors. A reorientation of the Belgian choice for this evolutionary concept may be required in case that a decision is taken to burn plutonium, when the need for flexible nuclear power plants arises or when new reactor concepts can demonstrate proved benefits in terms of safety and cost.

  2. The large nuclear works; Le grand chantier du nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Stephan, C. [Institut de Physique Nucleaire, (CNRS) 91 - Orsay (France)

    2010-10-15

    This article comments the present development of nuclear energy in the world. This energy is very attractive because it has no impact on greenhouse effect. The author briefly describes the various types of nuclear reactors, their operation principle, their power, their availability, their reliability, their reinforced safety. He also evokes the technological developments which lead to third generation reactors which are currently operated (the EPR is more particularly described). He comments the waste management issue, the possibility of fuel recycling, evokes the Myrrha reactor project, and the perspective of fourth generation reactors which will have to be both critical and sur-regenerator (or fast breeder): different projects and ideas are presented, notably mini-reactors

  3. The control of nuclear sector; Le controle du nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    The Asn is loaded with the control of the nuclear safety and the radiation protection in France: it provides this control, in the name of the state, to protect the workers, the patients, the public and the environment of the risks in relation with nuclear activities. The control is the core business of Asn. Asn so checks the nuclear basic installations (I.N.B.), since their conception until their dismantling, the pressure equipment specially conceived for these installations, the management of the radioactive waste as well as the transport of radioactive substances. Asn also checks all the industrial and research installations as well as the hospitals where are used ionizing radiations. It is a more recent profession there, because dating the reform of the control of the nuclear power of 2002, which constitutes that of the radiation protection. The first responsibility of the activities at risks falls to the one who begins them. This principle applies to all the sectors checked by Asn: an industrialist is responsible for the safety of the nuclear installations which he exploits, a doctor is responsible for the use of the ionizing radiations which he uses. (N.C.)

  4. Nuclear situation in Japan; La situation du nucleaire au Japon

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-07-01

    This analysis takes stock on the nuclear situation in Japan. It discusses the ambitious equipment program in collaboration with the France, the destabilization of the japanese nuclear industry following the accidents and the energy policy evolutions. It presents the projects of the japanese nuclear industry: the Monju reactor restart, the Pluthermal project, the reprocessing power plant of Rokkasho Mura, the new reactors, the russian weapons dismantling, the ITER site selection and the buy out of Westinghouse by Toshiba. (A.L.B.)

  5. Which nuclear energy for tomorrow?; Quelle energie nucleaire demain?

    Energy Technology Data Exchange (ETDEWEB)

    Huffer, E.; Nifenecker, H

    2001-03-01

    Facing the constant increase of electric power consumption, the authors wonder about the energy sources possibilities. After a synthesis of the fossil fuels and the renewable energies they present the nuclear energy and more specially the new hybrid reactor project (Carlo Rubbia), or ADS (Accelerator Driven System). (A.L.B.)

  6. All about nuclear sciences; Tout savoir sur le nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Le Blanc, A. [CEA Saclay DSM-SAC/USL2TI/STI/SVI, 91 - Gif-sur-Yvette (France)

    2009-07-01

    This French/English flyer, made by the French INIS team of CEA-Saclay, presents the INIS information system, the coverage and content of the database and makes the promotion of the opening of the database to free access through the web link: http://inisdb2.iaea.org/. (J.S.)

  7. Nuclear molecular imaging of paragangliomas; Imagerie moleculaire nucleaire des paragangliomes

    Energy Technology Data Exchange (ETDEWEB)

    Taieb, D.; Tessonnier, L.; Mundler, O. [Service central de biophysique et de medecine nucleaire, CHU de la Timone, 13 - Marseille (France)

    2010-08-15

    Paragangliomas (PGL) are relatively rare neural crest tumors originating in the adrenal medulla (usually called pheochromocytoma), chemoreceptors (i.e., carotid and aortic bodies) or autonomic ganglia. These tumors are highly vascular, usually benign and slow-growing. PGL may occur as sporadic or familial entities, the latter mostly in association with germline mutations of the succinate dehydrogenase (SDH) B, SDHC, SDHD, SDH5, von Hippel-Lindau (VHL), ret proto-oncogene (RET), neurofibromatosis 1 (NF1) (von Recklinghausen's disease), prolyl hydroxylase domain protein 2 (PHD2) genes and TMEM127. Molecular nuclear imaging has a central role in characterization of PGL and include: somatostatin receptor imaging ({sup 111}In, {sup 68}Ga), MIBG scintigraphy ({sup 131}I, {sup 123}I), {sup 18}F-dihydroxy-phenylalanine ({sup 18}F-DOPA) positron emission tomography (PET), and {sup 18}F-deoxyglucose ({sup 18}F-FDG) PET. The choice of the tracer is not yet fully established but the work-up of familial forms often require the combination of multiple approaches. (authors)

  8. Exit this way; Par ici la sortie du nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    This paper aims to inform the public on the nuclear power phaseout necessity. The fist part presents the hazards bound the nuclear activities, from the uranium mines to the radioactive wastes disposal and the reasons of a necessary phaseout. The second part recalls the historical aspects of the nuclear power implementation in the french energy policy and the today government attitude to value its choice. The last part presents the advantages of other energies sources and scenario of nuclear power phaseout. (A.L.B.)

  9. All nuclear: a French exception; Tout nucleaire: une exception francaise

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-07-01

    This little book, written by a nuclear opponent, explains how and why France has become one of the only European countries that has developed nuclear energy as the main energy source for power generation. It denounces the hypocrisy of the official talk, the economical logics, the political manipulation and the lack of information about the real risks linked with nuclear wastes.

  10. The dismantling of nuclear installations; Le demantelement des installations nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Lacoste, A.C.; Duthe, M.; Mignon, H. [Ministere de l`Industrie, des Postes et Telecommunications et du Commerce Exterieur, 75-Paris (France). Direction de la Surete des Installations Nucleaires; Charles, Th. [CEA Centre d`Etudes de Fontenay-aux-Roses, 92 (France). Inst. de Protection et de Surete Nucleaire; Michon, D. [Electricite de France (EDF), 75 - Paris (France); Lambert, F. [Unite de demantelement des installations nucleaires (UDIN), CEA (France); Pradel, Ph. [Compagnie Generale de Matieres Nucleaires (COGEMA), 30 - Bagnols-sur-Ceze (France). Etablissement de Marcoule; Vergne, C. [CODEM Groupement d`interet economique (France); Hillewaere, J.P.; Dupre la Tour, St. [DRIRE Nord-Pas-de-Calais (France); Mandil, C. [Ministere de l`Economie, des Finances et de l`Industrie (France); Weil, L.; Eickelpasch, N.; Finsterwalder, L. [Office Federal de radioprotection, (Germany)

    1997-10-01

    for nuclear installations, the dismantling is an important part of their exploitation. The technology of dismantling is existing and to get a benefit from the radioactive decay, it seems more easy for operating company such E.D.F. to wait for fifty years before dismantling. But in order to get the knowledge of this operation, the Safety Authority wanted to devote this issue of `Controle`to the dismantling method. This issue includes: the legal aspects, the risks assessment, the dismantling policy at E.D.F., the site of Brennilis (first French experience of dismantling), the dismantling techniques, the first dismantling of a fuel reprocessing plant, comparison with classical installations, economic aspect, some German experiences, the cleansing of the american site of Handford. (N.C.)

  11. A comprehensive survey of nuclear reactions; Panorama des reactions nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Cugnon, J. [Liege Univ., IFPA, AGO Dept. (Belgium)

    2007-07-01

    The various mechanisms of nuclear reactions are surveyed and classified in different regimes, based on the notions of coherent mechanisms and hard versus soft processes. The emphasis is put on the concepts at the basis of the understanding of these regimes and on the elements of nuclear structure which are involved in these different regimes, as well as the on the possibility of extracting this information. Due to lack of space and for pedagogical reasons, the discussion is limited to nucleon-induced and light-ion-induced reactions. However, a few remarks are given concerning some specific probes, such as weakly bound projectiles or neutron-rich nuclei. (author)

  12. experience du service de medecine nucleaire sahloul sousse dans ...

    African Journals Online (AJOL)

    ... M. Guezguezb,c, H. Essabbaha,c . a- Faculté de médecine de Monastir, avenue Avicenne 5019 Monastir, Tunisie b- Faculté de médecine de Sousse, rue Mohamed Karoui, 4002 Sousse, Tunisie c- Service de médecine nucléaire, centre hospitalo-universitaire de Sahloul, route de Ceinture, Sahloul 4054 Sousse, Tunisie.

  13. Metabolism and toxicology of plutonium-239 - evaluation of the internal contamination of persons professionally exposed (1963); Metabolisme et toxicologie du plutonium 239 - evaluation de la contamination interne des personnes professionnellement exposees (1963)

    Energy Technology Data Exchange (ETDEWEB)

    Henry, Ph. [Commissariat a l' Energie Atomique, Centre de Production de Plutonium, Marcoule (France). Centre d' Etudes Nucleaires

    1963-07-01

    After reviewing the main metabolic and toxicological properties of plutonium 239 as well as the professional norms now in force, the report considers the difficult problem of the evaluation of the internal contamination of persons professionally exposed. This evaluation is dependent on the practical organisation of the supervision involved: - systematic supervision by periodic analysis of urinary Pu and special supervision in the case of incidents by an examination adapted to each case. A simple interpretation of the systematic analyses, as well as the evaluation methods used in the main cases of occidental contamination are outlined. (author) [French] Apres avoir passe en revue les principales proprietes metaboliques et toxicologiques du plutonium 239, ainsi que les normes professionnelles actuellement en vigueur, le rapport aborde le probleme difficile de l'evaluation de la contamination interne des personnes professionnellement exposees. Cette evaluation est fonction de l'organisation pratique de la surveillance: - surveillance systematique par des analyses periodiques de Pu urinaire et surveillance speciale en cas d'incidents par des examens appropries a chaque cas. Une interpretation simple des analyses systematiques, ainsi que des methodes d'evaluation utilisables dans les principaux cas de contamination accidentelle sont exposees. (auteur)

  14. Intérêts et limites de l'analyse de la moelle osseuse en toxicologie médicolégale : contribution à l'interprétation quantitative des concentrations médullaires

    OpenAIRE

    Cartiser , Nathalie

    2011-01-01

    The aim of this work was to evaluate the interest of bone marrow (BM) analysis in forensic toxicology, as an alternative matrix to blood. An analytical method was developed and validated for the quantification of citalopram, diazepam, and its main metabolites (nordazepam, temazepam, oxazepam) in BM and 10 others matrices of forensic interest. This procedure was successfully applied to real cases for putrified sample analyses and to establish a tissue kinetic in rabbit samples for a pharmacoki...

  15. Exploitations énergétique, environnementale et agronomique de la Biométhanisation rurale bovine en Tunisie

    Directory of Open Access Journals (Sweden)

    Y. M'SADAK

    2015-01-01

    Full Text Available The present study involves the analysis of various possible valuations of rural Biomethanisation applied to the bovine manure. The diagnosis concerned gas productivity and some pollution parameters, plant growth and fertigation in a vegetable nursery. The preliminary results of the study showed that the conditioning of the produced rural biogas has improved its energy efficiency. The use of peat mixed with bovine methacompost as a nursery substrate has shown encouraging results as measured through height growth of pepper plants. In addition, the juice of bovin process, diluted with 75% of water, has showed an interesting fertilizing capacity; with the absence of plant wilting. However, in terms of environmental protection, the process of Biomethanisation does not allow a satisfactorily reduction of pollution load of suspended solids and BOD5.

  16. Introduction – Le capital environnemental pour penser les dynamiques socio-environnementales des espaces emblématiques

    OpenAIRE

    Tommasi, Greta; Richard, Frédéric; Saumon, Gabrielle

    2017-01-01

    La science est en mouvement perpétuel, un mouvement animé d’expériences, d’innovations et de débats. Concernant les sciences sociales, en même temps qu’elles les observent, elles révèlent et accompagnent les sociétés dans leurs mutations. Passées au crible des questionnements scientifiques et de la vie de laboratoire (Latour, Woolgar, 1979), ces mutations nourrissent tout autant de résultats empiriques que de nouvelles réflexions et propositions conceptuell...

  17. L' agriculture familiale et l' agriculture durable en Amérique du Nord: vers une agriculture "environnementalement correcte"

    Directory of Open Access Journals (Sweden)

    Bruno Jean

    2000-01-01

    Full Text Available The basic components of the American and Canadian public regulation regarding environment and agricultural ressources protection are review in this paper dealing also with the question of farmer'sliability to natural ressources preservation. The author take the position that the rise of environnemtal responsability of farmers can be the base for the development of a truly sustainable agriculture or a "environmentally-correct agriculture". Therefore, this new agriculture model can take place inside the contempory agro-food system based on model and productive families farms. After a brief description of the regulation under the American Farm Bill introducing the concept of farmer's "stewardship" (a notion not far away to the concept of "good management" or to the old French wording of "ménagement" of land launched by Olivier de Serres, a father of the French modern agfronomy, the article describe the Canadian approach which is quite similar. Finally, the author draw a conclusion in what he stand that the contempory family farming system can be viewed as a social form of agricultural production close to the theorical model of sustainable farming.

  18. L' agriculture familiale et l' agriculture durable en Amérique du Nord: vers une agriculture "environnementalement correcte"

    OpenAIRE

    Bruno Jean

    2000-01-01

    The basic components of the American and Canadian public regulation regarding environment and agricultural ressources protection are review in this paper dealing also with the question of farmer'sliability to natural ressources preservation. The author take the position that the rise of environnemtal responsability of farmers can be the base for the development of a truly sustainable agriculture or a "environmentally-correct agriculture". Therefore, this new agriculture model can take place i...

  19. Essais sur l’innovation environnementale : le rôle des relations verticales et despolitiques publiques

    OpenAIRE

    Mabrouk, Rania

    2017-01-01

    The innovation of the 21st century has no longer as a mere objective the survival of companies in the market and the stimulation of the growth at the country level. From now on, there is an urgent need to preserve the environment to ensure the development of present and future generations. Therefore, several empirical studies and theoretical accounts place the matter at the heart of innovation and economics fields of research. The first objective of this dissertation is to examine how ‐at a m...

  20. Proposal for the reinforcement of the environmental sanitary safety; Proposition pour un renforcement de la securite sanitaire environnementale

    Energy Technology Data Exchange (ETDEWEB)

    Grzegrzulka, O.; Aschieri, A. [Assemblee Nationale, 75 - Paris (France)

    1998-11-01

    Facing the context of the public reliance crisis, the sanitary risks bound to the environment became more and more important. This report asked by the first Minister of France, takes stock on the government policy in this domain and the today institutions. The first part defines the problematic of the sanitary risks bound to the environment, the second one shows the non adapted answer offered by the actual government and the last one proposes new procedures and actions.

  1. The high Environmental Quality the good way of the construction?; La haute qualite environnementale le bon sens de la construction?

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    This paper presents the Gaz De France Group policy facing the sustainable development: an quality environment, a better energy efficiency and economical efficiency. In this framework the Group policy is in agreement with the HQE (High Environmental Quality) representation. To illustrate the presentation, three examples of realizations in the construction sector are presented. (A.L.B.)

  2. L’HARMONISATION DE LA FISCALITÉ ENVIRONNEMENTALE DANS L’UNION EUROPÉENE : UNE ÉTUDE COMPARATIVE

    Directory of Open Access Journals (Sweden)

    Toma Elena

    2009-05-01

    Full Text Available Environmental protection issues took magnitude in recent years, being included on the list of priorities of the European Union. To reduce the negative externalities, a solution of compromise is taxing products whose consumption or production creates pollu

  3. 1 Étude des marées océaniques et environnementale radioactif de ...

    African Journals Online (AJOL)

    ASIMANANA

    Métrologie Nucléaire et Environnement, Institut National des Sciences et Techniques Nucléaires, ... types des marées : marée semi- diurne, marée à inégalité diurne, marée mixte et marée diurne. Dans la baie de ... L'étude sur la vitesse du mouvement de va et vient de la mer sur cette Baie et à la possession de l'annuaire.

  4. Conceptions plurielles du risque dans le contexte d’une controverse actuelle en santé environnementale

    Directory of Open Access Journals (Sweden)

    Vincent Richard

    2015-09-01

    Full Text Available Dans les écrits académiques sur le risque, on distingue généralement, au point de les opposer, les manières dont les citoyens et les scientifiques se réfèrent à différentes conceptions de la notion de risque. Dans cet article, nous suggérons que les conceptions véhiculées ne sont pas toujours aussi exclusives que ce qui est abondamment prétendu. Nous exemplifions cette proposition en analysant les conceptions véhiculées par deux groupes d’acteurs (Direction régionale de santé publique de l’Agence de la santé et des services sociaux de la Capitale-Nationale et un regroupement citoyen engagés dans la gestion d’une controverse publique actuelle autour de la pollution métallique dans les quartiers centraux de la Ville de Québec. En fin d’article, nous abordons les apports de la richesse des discours sur le risque et de leurs impacts sur la vivacité de la controverse.

  5. Ameliorer les performances environnementales des centrales a charbon pulverise via la co-combustion de combustible derive de dechets

    Science.gov (United States)

    Vekemans, Odile Geraldine

    Coal supplies around 28% of the world's energy needs and produces some 40% of the world's electricity. In the United States, close to 650 coal power plants currently produce electricity from coal, the majority of witch are equipped with pulverized coal boilers build in the 80's. Due to coal's intrinsic content in nitrogen and sulfur, its combustion is associated with high levels of NOx and SO2 emissions, that are responsible, among other thing, for acid rains. In order to help reduce SO2 emissions of coal power plant, this thesis focuses on the behaviour of a novel feedstock called ReEF(TM) or ReEngineered Feedstock(TM), developed by the company Accordant Energy LLCRTM, that combines non recyclable waste and alkaline sorbent. Since waste have a high calorific value and do not contain sulfur, and since alkaline sorbents (such as limestone) are able to react with SO2 and capture it in solid state, co-combustion of ReEF(TM) and coal could reduce SO2 emissions inside the furnace chamber itself. This technology easy to implement, as it requires a limited initial investment and limited additional space, could help avoid the construction of costly flue gas treatment unit downstream from the furnace. However, careless combustion of this engineered fuel could have disastrous consequences for the coal power plant owners. This thesis, then, deliver one among the first experimental study of co-combustion of coal and ReEF(TM) in conditions characteristic of pulverized coal boilers. As a first step, in order to get familiarize with the feedstock under study, the thermal degradation of a ReEF(TM) without sorbent and of its components is analyzed by thermogravimetry. With the analysis of more than 70 samples at heating rates ranging from 5°C/min to 400°C/min we are able to conclude that ReEF(TM) thermal degradation can be seen as the independent thermal degradation of its components, as long as heat transfer limitations are taken into account. Thus, no substantial chemical interactions between ReEF(TM) components take place during its devolatilization. During the second step of this study, performances of the co-firing of coal and sorbent are compared to that of co-combustion of coal and ReEF(TM) without sorbent. This is carried out in a reactor specially build for this study, capable of reproducing the contact mode between gas and particles, the concentrations, the temperature gradient and the pressure typical of pulverized coal boiler. SO2 emissions reduction around 20% are observed in presence of CaCO3 and of Ca(OH)2 compared to the coal baseline, reduction that generally increased with the increase of sorbent molar ratio compared to sulfur (also called stoic). As for the co-combustion of 20%th of ReEF(TM) and coal, a SO2 emission reduction around 20% is also measured, with no clear effect of ReEF(TM) composition (fiber to plastic ratio). On the other hand, the HCl level that is negligible during coal combustion with and without sorbent, reaches around 20ppm in presence of ReEF(TM), and increases proportionally with the ReEF(TM) plastic content. The first step of this work consists in the study of the co-combustion of coal and ReEF(TM) containing limestone (CaCO3), a mix of sodium bicarbonate (NaHCO3) and limestone, as well as a mix of trona (Na2CO3.NaHCO3.H2O) and limestone. The amount of sorbent in the ReEF(TM) as well as the feeding parameters are adjusted to reach a 20%th feeding of ReEF(TM) compared to coal, to inject sorbents at a stoic of 1, 2 and 2.5 and to obtain Na/Ca molar ratios of 0, 0.1 with trona and NaHCO3, and 0.5 with NaHCO 3 only. Globally, as in the case of sorbent alone, the increase of the total stoic of the feed leads to increased SO2 capture. For a given stoic, to combine waste and limestone in the ReEF(TM), compared to using limestone alone, allows to reach higher levels of SO2 emissions reduction. The combination of sodium-based and calcium-based sorbent even leads to record SO2 emissions reduction of more than 50% with trona, and more than 40% with NaHCO3, at gas residence time in the reactor four time smaller than typical residence time of PCB. Furthermore, the lower fuel-N content of the ReEF(TM), compared to coal, also leads to lower NOx emissions. Combustion of ReEF(TM) with trona is even associated with NOx emissions reduction of more than 50%, possibly due to sodium induced NO reduction. Finally, regarding HCl emissions, chlorine capture by the sorbents leads to HCl levels comparable to that of coal alone. Even if, from the point of view of pollutant emissions, the results are promising, co-feeding ReEF(TM) with sorbent was nonetheless associated with heavy formation of melted ash deposits in the reactor. Deposition probes are used to compare the magnitude of the deposition in function of the ReEF(TM) sorbent composition. With those probes, we are able to figure out that slag formation is quite severe in presence of NaHCO3, and all the more that the Na/Ca ratio is high, but is less severe in presence of limestone alone, and isn't at all problematic in presence of trona. Those results all seem to indicate that co-combustion of coal and 20%th ReEF(TM) containing limestone and trona at a Na/Ca ratio of 0.1 and at a total stoic of 2 is the most adequate composition for application in existing PCB. In all those experiments a single measure of the emissions at the exit of the reactor is conducted, the emissions being associated with a federate of gas and solid and a temperature profile along the reactor. In order to gain insight regarding the behaviour of the gas and the particles inside the reactor, a phenomenological model combining more than 30 reaction kinetics is developed. This model allows us, without any fitting parameter, to predict the CO2, SO2 and NOx emissions measured at the outlet of the reactor. This model is easily adapted to the different ReEF(TM) compositions and was able to take into account the various particle sizes. The model is then used to evaluate potential SO2 emissions reduction that could be obtain with ReEF(TM) co-combustion for a residence time and a temperature profile measured in an existing pulverized coal boiler. Those simulations indicate that SO2 emissions reduction up to 85% could be obtain at the exit of the furnace chamber with a 20%th coal feed substitution by ReEF(TM) containing limestone and trona. Co-combustion of ReEF(TM) in pulverized coal boiler is therefore sensible from the point of view of pulverized coal boiler environmental performances, as long as the ReEF(TM) composition is chosen wisely and is tested beforehand in conditions similar to that of PCB. Furthermore, since ReEF(TM) co-combustion allows electricity production at high efficiency from waste, it is also sensible in terms of waste energetic valorization.

  6. Les fonctions environnementales des parcs nationaux en Hongrie à l'aune de la transition économique

    OpenAIRE

    Depraz, Samuel

    2001-01-01

    National audience; Following the criteria edicted at the 1973 world congress of the IUCN in New-Delhi, a National Park is supposed to fulfill ecological functions such as the protection of biotopes and the study of ecosystems, but also social ones, which are mainly the spreading of knowledge about Nature and the development of open air leisure activities – fitting with the protection status of the park. The first point had been widely applied before 1990, since Nature protection was quite str...

  7. Areva. 2007 figures economic, social, societal and environmental data; Areva. Chiffres 2007 donnees economiques, sociales, societales et environnementales

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    This document presents the 2007 economic, social, societal and environmental data of the Areva Group. Content: 1 - Improvement initiative: Continuous improvement, Innovation; 2 - Financial performance: 2007 results; 3 - Commitment to employees: Stakeholder relations, Health and safety, Radiation protection, Radiological impacts, Technological risks, Workforce, Workforce and training; 4 - Environment: Water, Energy, Gaseous releases, Liquid releases, Conventional waste, Radioactive waste; 5 - Reporting and performance indicators: Reporting methodology, Auditors' report, Social indicators, Environmental indicators.

  8. Mesothelioma incidence and community asbestos exposure; Incidence du mesotheliome et exposition environnementale a l'amiante

    Energy Technology Data Exchange (ETDEWEB)

    Berry, M.

    1998-03-01

    The objective of this study is to examine the importance of environmental exposure, non professional, to asbestos in the supervening of mesothelioma among the inhabitants of Manville( Somerset county, New Jersey, United States) where is the most important factory making products with asbestos of the North America. (N.C.)

  9. Preparation and Analysis of Samples for the Third Round Robin Verification Exercise

    Science.gov (United States)

    1992-07-01

    school KL 16 Lid van de Contact Conumissie NBC-Bescherming Drs. N.H.W. van Xanten Beleidsmedewerker Militair Toxicologie AfdI. Militair Geneeskundig...Sijbranda 1{fd. Sectie Klinische Chemie en Toxicologie IGD KL 21 lid van de Contact Commissie NBC-Beschenrning Mw. A.C. Grade, arts Directie Mlilitair

  10. A future for nuclear sites beyond their service life. Nuclear site value development; Un avenir pour les sites nucleaires en fin de cycle. Valorisation des sites nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    As the nuclear industry moves into a new development phase, many facilities built in the fifties and sixties are reaching the end of their service life. Dismantling them and rehabilitating the sites on which they stand is a major industrial challenge which will give rise to a number of new projects. AREVA has more than 20 years' experience in these highly technical fields. As more and more sites reach the end of their service life, AREVA considers nuclear site value development as a fully-fledged industrial activity. The group's competencies in this field have been grouped together to form a dedicated entity: the Nuclear Site Value Development Business Unit, created in 2008. Several billion euros are invested in site value development projects which are far-reaching and complex, and often last for several decades. Long before work actually begins, lengthy studies and preparations are required to schedule operations, select the techniques to be used and optimize costs and deadlines. The Nuclear Site Value Development BU is currently working on four major projects involving its own facilities and those of the CEA: - La Hague: dismantling of the first generation of used fuel recycling facilities. Between 1966 and 1998, almost 5,000 tons of used fuel from graphite-moderated gas-cooled reactors, 4,500 tons of light water reactor fuel, as well as fuel from fast reactors and research reactors, were treated at UP2 400, the very first industrial recycling plant on the La Hague site. - Marcoule: first-time dismantling of a recycling plant. 1,000 rooms to be cleaned up, 30,000 tons of waste to be treated, 30 years of work. - Cadarache: first-time dismantling of a Mox fuel fabrication plant. The Cadarache plant was commissioned in 1962 to fabricate fuel for fast reactors; this was followed by MOX fuel for light water reactors, an activity which continued until the plant was shut down in 2003. - Annecy and Veurey: giving a new lease of life to former industrial sites in built-up areas. AREVA is currently working on a site value development program on two industrial sites in Annecy and Veurey, near Grenoble. Dating back to 1955 and 1957, the sites were created for the manufacture and precision machining of uranium metal. The number of clean-up and dismantling projects is set to rise steadily in the years ahead and site value development will unquestionably become a new nuclear activity in its own right. AREVA is developing the corresponding competencies and expertise: new professions are springing up (value development project manager, scenario and feedback manager, operational dismantling methods manager, flushing operator, etc.) and a dedicated theoretical and practical training program is being put together. Once a nuclear site has been shut down, the long-term dismantling and value development operations make a considerable contribution to the local economy. Site rehabilitation is an environmental necessity and improves nuclear's image in the eyes of the public. As new nuclear projects get off the ground, developing the value of disused sites will free up space for future projects and make a valuable contribution to the nuclear revival.

  11. Nuclear safety and radiation protection report of the Flamanville nuclear facilities - 2010; Rapport sur la surete nucleaire et la radioprotection des installations nucleaires de Flamanville - 2010

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-06-15

    This safety report was established under the article 21 of the French law no. 2006-686 of June 13, 2006 relative to nuclear safety and information transparency. It presents, first, the facilities of the Flamanville nuclear power plant (Manche (FR)): 2 PWR reactors in operation (INB 108 and 109), and 1 PWR under construction (Flamanville 3, INB 167). Then, the nuclear safety and radiation protection measures taken regarding the facilities are reviewed: nuclear safety definition, radiation protection of intervening parties, safety and radiation protection improvement paths, crisis management, external and internal controls, technical situation of facilities, administrative procedures in progress. The incidents and accidents which occurred in 2010, are reported as well as the radioactive and non-radioactive (chemical, thermal) effluents discharge in the environment. Finally, The radioactive materials and wastes generated by the facilities are presented and sorted by type of waste, quantities and type of conditioning. Other environmental impacts (noise, water consumption and waste management at Flamanville 3 construction site) are presented with their mitigation measures. Actions in favour of transparency and public information are presented as well. The document concludes with a glossary and a list of recommendations from the Committees for health, safety and working conditions. (J.S.)

  12. Nuclear safety and radiation protection report of the Chooz nuclear facilities - 2010; Rapport sur la surete nucleaire et la radioprotection des installations nucleaires de Chooz - 2010

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-06-15

    This safety report was established under the article 21 of the French law no. 2006-686 of June 13, 2006 relative to nuclear safety and information transparency. It presents, first, the facilities of the Chooz nuclear power plant (Ardennes (FR)): 2 PWR reactors in operation (Chooz B, INB 139 and 144) and one partially dismantled PWR reactor (Chooz A, INB 163). Then, the nuclear safety and radiation protection measures taken regarding the facilities are reviewed: nuclear safety definition, radiation protection of intervening parties, safety and radiation protection improvement paths, crisis management, external and internal controls, technical situation of facilities, administrative procedures in progress. The incidents and accidents which occurred in 2010, are reported as well as the radioactive and non-radioactive (chemical, thermal) effluents discharge in the environment. Finally, The radioactive materials and wastes generated by the facilities are presented and sorted by type of waste, quantities and type of conditioning. Other environmental impacts (noise, microbial proliferation in cooling towers) are presented with their mitigation measures. Actions in favour of transparency and public information are presented as well. The document concludes with a glossary and a list of recommendations from the Committees for health, safety and working conditions. (J.S.)

  13. Nuclear safety and radiation protection report of the Chinon nuclear facilities - 2010; Rapport sur la surete nucleaire et la radioprotection des installations nucleaires de Chinon - 2010

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-06-15

    This safety report was established under the article 21 of the French law no. 2006-686 of June 13, 2006 relative to nuclear safety and information transparency. It presents, first, the facilities of the Chinon nuclear power plant (Indre-et-Loire, 37 (FR)): 4 PWR reactors in operation (Chinon B, INB 107 and 132), 3 partially dismantled graphite-gas reactors (Chinon A, INB 133, 153 and 161), a workshop for irradiated materials (AMI, INB 94), and an inter-regional fuel storage facility (MIR, INB 99). Then, the nuclear safety and radiation protection measures taken regarding the facilities are reviewed: nuclear safety definition, radiation protection of intervening parties, safety and radiation protection improvement paths, crisis management, external and internal controls, technical situation of facilities, administrative procedures in progress. The incidents and accidents which occurred in 2010, are reported as well as the radioactive and non-radioactive (chemical, thermal) effluents discharge in the environment. Finally, The radioactive materials and wastes generated by the facilities are presented and sorted by type of waste, quantities and type of conditioning. Other environmental impacts (noise, microbial proliferation in cooling towers) are presented with their mitigation measures. Actions in favour of transparency and public information are presented as well. The document concludes with a glossary and a list of recommendations from the Committees for health, safety and working conditions. (J.S.)

  14. Should we be scared of nuclear energy?; Faut-il avoir peur du nucleaire?

    Energy Technology Data Exchange (ETDEWEB)

    Allegre, C.

    2011-07-01

    The recent accident of the Fukushima daiichi power plant has re-launched the nuclear debate in France. On the one hand, the nuclear power allows the French consumers to benefit by the cheapest electricity in Europe. On the other hand the undeniable accidents spread fears and doubts about the safety of nuclear facilities. Therefore, should we trust the scientists and technical specialists when they claim that the potential danger is weak? The author takes stock of the question without taboos or prejudices and supplies to us the scientific, technical, economical and political elements allowing anyone to make his own opinion based on reason and not on emotion or fear. (J.S.)

  15. Elecnuc. Nuclear power plants in the world; Elecnuc. Les centrales nucleaires dans le monde

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-07-01

    This small booklet summarizes in tables all the numerical data relative to the nuclear power plants worldwide. These data come from the French CEA/DSE/SEE Elecnuc database. The following aspects are reviewed: 1999 highlights; main characteristics of the reactor types in operation, under construction or on order; map of the French nuclear power plants; worldwide status of nuclear power plants at the end of 1999; nuclear power plants in operation, under construction and on order; capacity of nuclear power plants in operation; net and gross capacity of nuclear power plants on the grid and in commercial operation; grid connection forecasts; world electric power market; electronuclear owners and share holders in EU, capacity and load factor; first power generation of nuclear origin per country, achieved or expected; performance indicator of PWR units in France; worldwide trend of the power generation indicator; 1999 gross load factor by operator; nuclear power plants in operation, under construction, on order, planned, cancelled, shutdown, and exported; planning of steam generators replacement; MOX fuel program for plutonium recycling. (J.S.)

  16. Nuclear energy: French government policy; Politique nucleaire et diversification energetique: orientations gouvernementales

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-02-02

    This report presents the French government policy concerning nuclear energy and alternative sources of energy for the next 10 years. This report overviews the situation of Super-Phenix fast reactor and presents the implications of the 30/12/1999 decree (Bataille's law) about the management of radioactive wastes.

  17. Joliot-Curie School of Nuclear Physics, 1997; Ecole Joliot-Curie de Physique Nucleaire, 1997

    Energy Technology Data Exchange (ETDEWEB)

    Abgrall, Y. [L`Institut National de Physique Nucleaire et de Physique des Particules du CNRS (India2P3), 75 - Paris (France); Collaboration: La Direction des Sciences de la Matiere du CEA (FR); Le Fonds National de la Recherche Scientifique de Belgique (BE)

    1998-12-31

    This document contains the lectures of the Joliot-Curie International School of Nuclear Physics held at Maubuisson, France on 8-13 September 1997. The following lectures of nuclear interest were given: The N-body problem (relativistic and non-relativistic approaches); The shell model (towards a unified of the nuclear structure); Pairing correlations in extreme conditions; Collective excitations in nuclei; Exotic nuclei (production, properties and specificities); Exotic nuclei (halos); Super and hyper deformation (from discrete to continuum, from EUROGAM to EUROBALL); and The spectroscopy of fission fragments. Important new facts are reported and discussed theoretically, concerning the nuclei in high excitation and high states and of the nuclei far off stability. Important technical achievements are reported among which the production of radioactive beams, sophisticated multi-detectors as well as significant advances in the nuclear theoretical methods. The double goal of training of young researchers and of permanent formation and information of the older ones seems to have been reached

  18. Institut de Physique Nucleaire d'Orsay. Highlights and achievements 2008-2013

    International Nuclear Information System (INIS)

    2013-01-01

    Activities of the Institute through the 2008-2013 period, have been considerable and a detailed description of all of them would have resulted in a relatively large document. The choice was then made to only describe a selection of highlights from the activities of the different groups during the last 5 years. This concerns the five main scientific topics of the institute that are: 1- Nuclear Structure and Dynamics: The highlights described in this section concern the activities of two different research groups 'NESTER' and 'NIM'; 2 - Hadrons and Hadronic Matter: This section concerns the three teams involved in the CLASS collaboration at JLab, the HADES collaboration at GSI and the ALICE collaboration at LHC. All three are part of the group 'PHEN'; 3- Physics and Chemistry of Nuclear Energy: This section covers, on one hand, activities related to Nuclear Data and Simulations of novel option for nuclear energy production within the group 'PACS' and, on the other hand, all the activities that are performed within the 'RC (Radio-chemistry group)'; 4- Astrophysics: This section concerns nuclear astrophysics research activity at the group 'NESTER', the astro-chemistry activity at the 'NIM' group and the astro-particle activity within the 'AUGER' collaboration in the group 'PHEN'; 5 - Theory: This activity concerns mainly the 'Theory' group. Beside these five scientific topics a multidisciplinary activity based mainly on the use of accelerated nanoparticles with the TANDEM accelerator at ALTO is also described. Two additional sections are devoted in the document to summarize the activities related to: 1 -Accelerator physics and technology; 2 - Detector technology, instrumentation and data acquisition and processing. A separate paragraph gives a status report and highlights from the main facilities in the Institute such as ALTO, SUPRATECH and CACAO. The activities on 'Dosimetry' in one hand and on 'Safety and Radiation Protection' on the other hand as well as an overview of the activities within the 'Communication' group are summarized in separate paragraphs. A short paragraph is also given in order to remind the vital activities for the running and functioning of the institute that are covered by the Administration, Logistics and Infrastructure Division (DALI). A special attention was given these last years for continuous training of the personnel. This is motivated by the importance of keeping and passing over the expertise as well as of helping identifying promotion perspectives for all categories of employees (chapter 14). A self-evaluation is proposed in chapter 15. This self-evaluation is largely based on the conclusions of the evaluation of our activities by the Scientific and Technical Advisory committee of the Institute. For each of the activity reports various information is given such as the dedicated human resources and their evolution during the last 5 years, scientific production in terms of publications, participation to conferences etc

  19. Information report nuclear energy in Europe; Rapport d'information energie nucleaire en Europe

    Energy Technology Data Exchange (ETDEWEB)

    Montesquiou, A. de

    2002-07-01

    This report takes stock on the nuclear energy situation in Europe. The European Union with more than 40% of the nuclear power capacity in the world, is already confronted with the nuclear energy place and stakes in the future energy policy. The report si presented in two main parts. The first part, ''the assets and the weaknesses of the nuclear energy'', deals with the economical aspects which historically based the choice of the nuclear energy and the induced impacts on the environment. The competitiveness of the nuclear energy but also the wastes management problem are discussed. The second part, ''the diplomatic and juridical framework of the nuclear energy development'', details and presents the limits of the EURATOM treaty. (A.L.B.)

  20. Fatigue damage of nuclear facilities; Endommagement par fatigue des installations nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    The conference on the fatigue damage of nuclear facilities, organized by the SFEN (french society of nuclear energy), took place at Paris the 23. of november 2000. Eleven papers were presented, showing the state of the art and the research programs in the domain of the sizing rules, safety, installations damage, examination and maintenance. (A.L.B.)

  1. International nuclear panorama. Developments october 2001 - april 2002; Panorama nucleaire international. Developpements octobre 2001 - avril 2002

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-07-01

    This panorama presents the today situation of the nuclear parks and the future tendencies, by a political and economic analysis of the governments policy, for the following continents: north America, west Europe, Asia, South America, Africa, Russia and east europe. (A.L.B.)

  2. Nucleaire et Energies Nr 63 - June 2014. 18 months before the Paris Climate Conference

    International Nuclear Information System (INIS)

    Lenail, Bernard; Ducroux, Guy; Lamorlette, Guy; Seyve, Claude; Simonnet, Jacques; Justin, Francois; Darricau, Aime; Blanc, Jacques; Salanave, Jean-Luc; Raisonnier, Daniele; Deleigne, Francoise

    2014-06-01

    After a first article which evokes the perspective and challenges of the Paris Climate Conference, two articles address energy issues: a discussion of the evolution of the energy sector (challenge of energy transition, evolutions of the energy mix in different countries, shale gases in the USA, Europe and France, electricity prices in France, situation and projects of French energy companies) and an overview of news in the renewable energy sector (in Morocco, Germany and the UK, the second bidding for offshore wind projects in France). Three articles deal with nuclear energy: agreements and projects in Niger, news about various fuel production sites in different countries, overview of the situation of reactors (EPR, China) and decisions on projects and investments in different countries, overview of activities and events related to the back-end of the fuel cycle (notably in different Areva sites) and to decommissioning in different countries. Four articles address societal issues related to nuclear safety and environment (relationships between French nuclear operators and Safety Authorities, the situation of populations around Fukushima, Greenpeace in Fessenheim, the issue of fuel sheath wear, use of rare earth materials in wind turbines), a positive perception of the presence of Areva (after Cogema) in Niger, a scenario for Fessenheim, and the deep disposal Cigeo project

  3. What expects rheumatologist from bone scan; Qu'attend le rhumatologue de la medecine nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Sutter, B. [Institut Calot, 62 - Berck sur Mer (France); Meys, E. [Centre Hospitalier Duchenne, 62 - Boulogne sur Mer (France)

    2003-11-01

    Conventional bone scintigraphy continues to be one of the most common diagnostic imaging requested by rheumatologist, despite development of new investigation modalities. Three (or two) phase bone scintigraphy, Single Photon Emission Computer Tomography have increased its value and provided new clinical roles. This review emphasizes through some practical clinical examples how to increase diagnostic value of the method, especially in the field of inflammatory diseases at early stages (rheumatoid arthritis and spondyl-arthropathy). Scintigraphy appears as a diagnostic tool, with requirements between clinical examination and radiographic examination-X Ray, computed tomography, ultrasonography, MRI. (author)

  4. 1984. Annual progress report of the Institut de Physique Nucleaire at Orsay

    International Nuclear Information System (INIS)

    1985-01-01

    The first part of this report presents the work of the year 1984 of research in the Division of experimental physics of the Institute of Nuclear Physics in Orsay, the activities are conducted in six axes: nuclear structure, high excitation energy nuclear states, heavy ion collision phenomena, intermediate energy nuclear physics, radiochemistry and perinuclear research. The second part presents the studies of the theoretical physics division of the Institute for Nuclear Physics in Orsay in 1984. The different research axes are the following: nuclear physics, intermediate energy nuclear physics, elementary particles. The third part presents a compilation of the work done by the technical groups of the laboratory. The different axes are: operation and development of accelerators, design studies on new superconducting cyclotron project equipment and instrumental projects, technical developments used for specific research [fr

  5. Microscopic description of nuclear structure; La structure nucleaire decrite par les theories microscopiques

    Energy Technology Data Exchange (ETDEWEB)

    Girod, M.; Berger, J.F.; Peru, S.; Dancer, H. [CEA Bruyeres-le-Chatel, 91 (France)

    2002-07-01

    After briefly recalling the formalism of the mean field approach with an effective nucleon-nucleon interaction, the theoretical framework of the nuclear structure studies performed at CEA-DAM, applications of this theory to various nuclear systems: shape and spin isomeric states, neutron and proton rich nuclei, superheavy and hyper-heavy nuclei, and to the fission process are presented. (authors)

  6. Nuclear Internet: Back to a future (at nucleaire.edf.fr)

    International Nuclear Information System (INIS)

    Aubouin, Pascal; Borel, Remi

    2001-01-01

    The world is changing. Environment and Health are key issues, especially in western countries. People start to worry about the impact of the products they use or eat and about their legacy to their children, on a worldwide scale : 'We do not inherit the earth from our parents; we borrow it from our children' is one of the current new motto for the c itizens of Earth . In such a context, nuclear energy is less accepted than before. The recent debate over the ozone layer, global warming and climate change, GMOs, mad-cow disease and most recently uranium-based ammunitions, cannot but reinforce the deep mistrust felt by large components of the society. Opponents to nuclear energy have found a new audience, and some political decisions take this evolution into account. This mistrust is reinforced by the absence of a direct link between EDF and the general public. However: a new attitude is emerging, which might be an opportunity for us. Citizens demand the right to know, the right to shape their own point of view, using first-hand information. Internet is an obvious answer to this need for more personal, human contact. This presentation discusses how do you establish a link with people browsing the net, so they can shape their own opinion about nuclear energy? A climate of trust is key, based on the following ingredients: Transparency; Responsibility and trustworthiness; Openness and Empathy; Innovation; Interactivity. An overview on 8 months activity is displayed. The EDF web site has improved since its launch and is still improving today. It is not considered a finished product

  7. The radioactive wastes management; Le dossier: les dechets nucleaires et leur gestion

    Energy Technology Data Exchange (ETDEWEB)

    Rigny, P. [Actualite Chimique, 75 - Paris (France); Bonin, B. [CEA Saclay, Dir. de l' Energie Nucleaire, 91 - Gif sur Yvette (France); Gras, J.M. [Electricite de France (EDF-RD), Recherche et Developpement, 78 - Chatou (France)

    2010-11-15

    The different types of radioactive waste are presented in this paper in the frame of the official categories which take into account their dangerousness and the lifetimes of their radioactivity. It is indicated how the less dangerous of them are handled in France. The ways of protecting the environment from the more dangerous ones (high activity and long lifetimes) are object of studies. Scientific questions, in the field of chemistry and physical chemistry, related to the implementation of deep underground repository facilities with full respect of nuclear safety are presented. (authors)

  8. The Chernobyl murder. The nuclear Goulag; Le crime de Tchernobyl. Le goulag nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Tchertkoff, W

    2006-07-01

    The authors of this book are the Chernobyl victims of the 26 April 1986 nuclear accident: millions of poor farmers, contaminated young mothers and children which eat every days radionuclides; ''Liquidators'', sacrificed to stop the fire of the power plants; invalids and also doctors and scientists which refuse the nuclear lobby. This book presents the two Byelorussian scientists which have risk their career and their health to help the contaminated populations. This book takes stock on the today nuclear policy and becomes alarm in seeing the development of the nuclear program in many countries. (A.L.B.)

  9. French people and nuclear wastes; Les francais et les dechets nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    D' Iribarne, Ph. [Centre National de la Recherche Scientifique (CNRS), 75 - Paris (France)

    2005-07-01

    On March 21, 2005, the French minister of industry gave to the author of this document, the mission to shade a sociological light on the radioactive wastes perception by French people. The objective of this study was to supply an additional information before the laying down in 2006 of the decisions about the management of high-level and long-lived radioactive wastes. This inquiry, carried out between April 2004 and March 2005, stresses on the knowledge and doubts of the questioned people, on the vision they have of radioactive wastes and of their hazards, and on their opinion about the actors in concern (experts, nuclear companies, government, anti-nuclear groups, public). The last two parts of the report consider the different ways of waste management under study today, and the differences between the opinion of people living close to the Bure site and the opinion of people living in other regions. (J.S.)

  10. Prospective economical study of the nuclear power file; Etude economique prospective de la filiere electrique nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Charpin, J.M. [Commissariat General du Plan, 75 - Paris (France); Dessus, B. [Ecodev-CNRS, 92 - Meudon (France); Pellat, R. [CEA, 75 - Paris (France)

    2000-07-01

    On May 7, 1999 an economical study of the overall nuclear file, and in particular, of the back-end part of the fuel cycle and including the reprocessing, was requested by the French Prime Minister. This study includes the cost comparisons with the other means of power production and takes into consideration the environmental costs. The study is shared into five chapters dealing with: 1 - the legacy of the past: todays park of nuclear plants, economical and material status; 2 - the international evolution: the dynamics of nuclear policies worldwide (existing parks and R and D programs), the rise of environmental problems worldwide (CO{sub 2} and the climate convention, nuclear risks, attempts of including environment in the power costs), the choices made for the management of spent fuels in the main countries; 3 - the technological prospects for the power production and use: technologies for the mastery of power demand (residential, industrial and tertiary sectors, power transportation), technologies of power production (production from nuclear, fossil and renewable energies); 4 - prospective scenarios for France: two demand scenarios at the year 2050 vista (energy, electric power), power supply (supply structure with respect to scenarios, nuclear parks, power capacities), environmental aspects (CO{sub 2} emissions, plutonium and minor actinides production); 5 - the economical status of the different scenarios: data preparation, fossil fuel price scenarios, investment and operation costs of the different power production means (nuclear, fossil and renewable energies, natural gas and power distribution networks), comparison between fluxes and cumulated economic costs linked with the different scenarios (investments, exploitation, fuels, R and D, status for 2000 to 2050), time structure of expenditures with respect to the different scenarios (chronology, statuses, kWh costs, sensitivity with respect to the rate of discount, valorization of existing parks in 2050), cost overruns with respect to pollutant emissions. (J.S.)

  11. Critical aspects of the nuclear multifragmentation; Etude du caractere critique de la multifragmentation nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Marie, J

    2004-06-01

    From statistical mechanics, this thesis looks for a phase transition signal in nuclei. We try to describe critical aspects of the nuclear multifragmentation. Thermodynamical observables as fragment mass/charge distributions are used in those finite systems. The percolation theory is first applied to strictly statistical events from the lattice gas model framework at the thermodynamical critical point. The scaling functions obtained are quantitatively comparable for every sample. Critical exponents are almost the same as the liquid/gas universality class ones. The second part is devoted to Fisher's model framework taking into account for the chemical potential and the surface energy coefficient. The extracted critical temperature is compatible with the percolation one. Experimental samples are then studied from peripheral (Au+Au) and central (Xe+Sn) heavy ion collisions. Entrance channel memory effects are evidenced in peripheral events. The presence of collective flow make the central ones far away from the conditions required by Fisher's model. Nevertheless, the critical energy found is independent of the data characteristics. This curious stability has to be studied. (authors)

  12. Particles identification using nuclear emulsion in OPERA; Identification des particules par les emulsions nucleaires dans OPERA

    Energy Technology Data Exchange (ETDEWEB)

    Manai, K

    2007-10-15

    The Opera experiment will try to confirm the {nu}{sub {mu}} {yields} {nu}{sub {tau}} oscillations by the appearance of the {nu}{sub {tau}} in a pure {nu}{sub {mu}} beam. Indeed, a neutrino beam almost pure is produced at CERN (CNGS Beam) and sent to the Opera detector. The detector is composed of two muons spectrometers and a target formed by walls of bricks. Each brick is an alternation of lead plates and emulsions. This modular structure allows to reconstruct the kink topology of the {tau} lepton decay with a high spatial resolution. The great challenge of the Opera experiment is to detect the {nu}{sub {tau}} interactions with the less uncertainty. To reduce this uncertainty it is essential to identify with the greatest efficiency any background event not including a tau particle. My work permits to reduce background. My principal contribution concerns the selection development, the reconstruction and the muons identification at low energy. This work is based on the setting of variables related to the deposit energy and the multiple scattering. Previously, only deposit energy was used in the analyses of pion/muon separation. This study allows doubling the muon identification efficiency at low energy. This leads to increase the background events rejection in Opera and to decrease the contamination by 30%. I also studied the nuclear emulsions capacity to identify charged particles through the analysis of a test beam carried out by the Nagoya group. This test contains protons and pions with different energies. My work proves that the European scan system gives comparable results with those obtained by the Japanese scan system. (author)

  13. Energy policy: the nuclear in debate; Politique energetique: le nucleaire en debat

    Energy Technology Data Exchange (ETDEWEB)

    Deleuze, O. [Secretariat d' Etat Belge a l' Energie et au Developpement Durable (Belgium); Roussely, F. [Electricite de France, EDF, 75 - Paris (France); Dessus, B. [Centre National de la Recherche Scientifique, CNRS, 75 - Paris (France); Lauvergeon, A. [Cogema, 78 - Velizy Villacoublay (France); Colombani, P. [CEA, 75 - Paris (France); Revol, H.; Jedliczka, M.; Baupin, D.; Arditi, M.; Fell, H.J

    2000-07-01

    Debates about energy policy for the France: Members of Parliament, the presidents of Electricite de France and Cogema, spokespersons for the ecologists political group, scientists, general administrator of the Cea, member of the Deutsche Bundestag set out their different points of view about the future of nuclear energy. Energy conservation and efficiency, renewable energy sources, carbon dioxide emissions and Kyoto protocol, energy supplies safety, economic points of view are as many points tackled during these debates. If everyone agrees to think that it is necessary to diversify the energy sources, no agreement comes to light about the place of nuclear energy in this diversification. (N.C.)

  14. Institut National des Sciences et Techniques Nucleaires. From academic to vocational: specificity and vision

    International Nuclear Information System (INIS)

    Turpin, Laurent

    2008-01-01

    - What is INSTN?: Teaching and training service of CEA; Capability of awarding degrees; Stand-alone: only specialty degrees; Partnership with universities and Engineer schools: master degrees; Professional training operator for CEA and for SMEs. - Corner stones for the next future (5-10 years): increasing the capability in nuclear training (Nuclear skills for nuclear engineers (reactor physics,...), factor 3-4, Nuclear skills for non-nuclear engineers (civil works, project management,...), All stakeholders have to do more (Academics on basic knowledge (have to prepare to a wide range of positions), Specialty institutes on specialized knowledge (before the job and on the job), Internal programs on proprietary programs), optimizing the resources (No false hope: more training means higher costs but does not mean nuclear companies will lay golden eggs; Availability of teaching resource and capability of internship tutoring could be bottlenecks; Trained/graduate production must match actual human resources needs). - A strategy for INSTN: Academic partnerships, to implement nuclear modules within training programs; With companies, a stakeholder-shareholder joint venture model for postgraduate training; Open to European and offshore cooperation

  15. Links between nuclear medicine and radiopharmacy; Structuration des liens entre medecine nucleaire et radiopharmacie

    Energy Technology Data Exchange (ETDEWEB)

    Pelegrin, M. [Inserm, U896, CRLC Val-d' Aurelle-Paul-Lamarque, institut de recherche en cancerologie de Montpellier (IRCM), universite Montpellier 1, 34 - Montpellier (France); Francois-Joubert, A. [Service de medecine nucleaire, centre hospitalier de Chambery, 73 - Chambery (France); Chassel, M.L. [Radiopharmacie, service de pharmacie, centre hospitalier de Chambery, 73 - Chambrry (France); Desruet, M.D. [Service de radiopharmacie et service pharmaceutique, clinique universitaire de medecine nucleaire, CHU de Grenoble, 38 - Grenoble (France); Bolot, C. [Service de radiopharmacie, service pharmaceutique, centre de medecine nucleaire, groupement hospitalier Est, 69 - Bron (France); Lao, S. [Service de radiopharmacie, medecine nucleaire, hopital de l' Archet, 06 - Nice (France)

    2010-11-15

    Radiopharmaceuticals are nowadays under the responsibility of the radio-pharmacist because of their medicinal product status. Radiopharmacy belongs to the hospital pharmacy department, nevertheless, interactions with nuclear medicine department are important: rooms are included or located near nuclear medicine departments in order to respect radiation protection rules, more over staff, a part of the material and some activities are shared between the two departments. Consequently, it seems essential to formalize links between the radiopharmacy and the nuclear medicine department, setting the goals to avoid conflicts and to ensure patients' security. Modalities chosen for this formalization will depend on the establishment's organization. (authors)

  16. The diverse applications of the nuclear power; Les diverses applications du nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    The three great categories of application in industry and environment of ionizing radiations are the use of ionizing radiation to transport energy in matter it is industrial irradiation, the use of radioactive sources of low activity to analyze and measure, it is the nucleonic instrumentation, the use of radioactive tracers to follow and study the matter transfer. Are explained the treatments to improve the plastic materials and the ionisation of food. (N.C.)

  17. The nuclear seems to be accepted unanimously; Le nucleaire semble deja faire l'unanimite

    Energy Technology Data Exchange (ETDEWEB)

    Anon

    2003-02-01

    The 34. forum of Iena has allowed to different participants to express their point of view on the future energy choices before the beginning of the national debate. Through the choice of different European countries or the interventions of the big French energy groups, the nuclear energy seems already to be a must. (N.C.)

  18. Which future for the nuclear counter-proliferation?; Quel avenir pour la contre-proliferation nucleaire?

    Energy Technology Data Exchange (ETDEWEB)

    Duval, M

    2004-10-01

    After a recall of the permanent data about proliferation and of the safeguards implemented by the international community, the author demonstrates that proliferation has moved towards Asia where a real 'black market' has been created. Then he analyzes the consequences of this change on the future of nuclear deterrent. Finally, he expresses his nostalgia in front of this drift and worries about the future uselessness of the means devoted to this 'pacifying' strategy. (J.S.)

  19. Evaluation by the Department de Surete Nucleaire of unsolved PWR safety problems

    International Nuclear Information System (INIS)

    Dupuis, M.C.; Cayol, A.; Fourest, B.

    1980-04-01

    The deterministic or probabilistic methods of safety analysis and the analysis of accidents used at the design and construction stage have enabled certain safety problems connected with the PWR programme in France to be identified. Some of these problems have already been stressed by the NRC whereas others are specific to the safety approach practised in France. These problems have led to the adoption of special measurements on the reactors already in operation and should be accounted for in the design of future installations. Analysis of running experience and of incidents should be used to check the validity of the steps taken at the design stage and to identify the weak points of the facilities, especially in their piloting and at the man-machine interface [fr

  20. Effets du milieu sur la propagation des neutrinos dans la matiere nucleaire

    CERN Document Server

    Margueron, J

    2001-01-01

    We study the elementary interactions between neutrinos and dense matter in a proroneutron star. Equations of state obtained with different nuclear effective interactions (skyrme, Gogny, relativistic Lagrangians) are first discussed.Then we characterize their stability in spin and isospin. We derive magnetic susceptibilities for all isospin asymmetry values as a function of Landau parameters G^{tau tau'}_0 (where tau, tau' = proton or neutron)We calculate nthe pure neutron matter response functions with and withoutcharge exchange, describing nuclear correlations in both approaches : non-relativistic and relativistic. At the end we calculate neutrino mean free paths for neutral current and charged current reactions.Comparisons between relativistic and non-relativistic approaches allow us to identify relativistic effects in nuclear matter at densities as low as twice the saturation density.RPA correlations make the medium more transparent to neutrinos compared to free Fermi gas.

  1. Elecnuc. Nuclear power plants in the world; Elecnuc. Les centrales nucleaires dans le monde

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    This small booklet summarizes in tables all data relative to the nuclear power plants worldwide. These data come from the IAEA's PRIS and AREVA-CEA's GAIA databases. The following aspects are reviewed: 2007 highlights; Main characteristics of reactor types; Map of the French nuclear power plants on 2007/01/01; Worldwide status of nuclear power plants (12/31/2007); Units distributed by countries; Nuclear power plants connected to the Grid- by reactor type groups; Nuclear power plants under construction on 2007; Evolution of nuclear power plants capacities connected to the grid; First electric generations supplied by a nuclear unit in each country; Electrical generation from nuclear power plants by country at the end 2007; Performance indicator of French PWR units; Evolution of the generation indicators worldwide by type; Nuclear operator ranking according to their installed capacity; Units connected to the grid by countries at 12/31/2007; Status of licence renewal applications in USA; Nuclear power plants under construction at 12/31/2007; Shutdown reactors; Exported nuclear capacity in net MWe; Exported and national nuclear capacity connected to the grid; Exported nuclear power plants under construction; Exported and national nuclear capacity under construction; Nuclear power plants ordered at 12/31/2007; Long term shutdown units at 12/31/2007; COL (combined licences) applications in the USA; Recycling of Plutonium in reactors and experiences; Mox licence plants projects; Appendix - historical development; Meaning of the used acronyms; Glossary.

  2. Nuclear energy: obstacles and promises; L'energie nucleaire: obstacles et promesses

    Energy Technology Data Exchange (ETDEWEB)

    Bacher, P

    2003-07-01

    Nuclear energy has distinctive merits (sustainable resources, low costs, no greenhouse gases) but its development must overcome serious hurdles (fear of accidents, radio-phobia, waste management). The large unit size of present-day reactors is compatible only with large electrical grids, and involves a high capital cost. Taking into account these different factors, the paper outlines how nuclear energy may contribute to the reduction of greenhouse gases, and which are the most promising developments. (author)

  3. Report transparency and nuclear safety 2007 - CISBIO; Rapport transparence et securite nucleaire 2007 - CISBIO

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    This report presents the activities of CISBIO, nuclear base installation, for the year 2007. CISBIO realizes at Saclay most of the radiopharmaceuticals and drugs distributed in France for the nuclear medicine. The actions concerning the safety, the radiation protection, the significant events, the release control and the environmental impacts and the wastes stored on the center are discussed. (A.L.B.)

  4. Fuel and nuclear fuel cycle; Le combustible et le cycle du combustible nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Prunier, C

    1998-07-01

    The nuclear fuel is studied in detail, the best choice and why in relation with the type of reactor, the properties of the fuel cans, the choice of fuel materials. An important part is granted to the fuel assembly of PWR type reactor and the performances of nuclear fuels are tackled. The different subjects for research and development are discussed and this article ends with the particular situation of mixed oxide fuels ( materials, behavior, efficiency). (N.C.)

  5. Nuclear energy for the 21. century; Energie nucleaire pour le 21. siecle

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-03-15

    This document gathers 5 introductory papers to this conference about nuclear energy for the 21. century: the French energy policy during the last 30 years (situation of France with respect to the energy supply and demand, main trends of the French energy policy, future of the French nuclear policy); presentation of IAEA (technology transfer, nuclear safety, non-proliferation policy, structure and financial resources, council of governors, general conference, secretariat); nuclear power and sustainable development; promoting safety at nuclear facilities (promoting safety, basics of safety, safety at the design stage, risk management, regulatory control and efficiency of the regulation organization, role of IAEA); nuclear energy today (contribution to sustainable development, safety, best solution for the management of radioactive wastes, future of nuclear energy). (J.S.)

  6. Nuclear facilities: repair and replacement technologies; Installations nucleaires: technologies de reparation et de remplacement

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    The oldest operating reactors are more than 35 years old and are now facing major maintenance operations. The first replacement of a pressurizer took place in autumn 2005 at the St-Lucie plant (Usa) while steam generators have been currently replaced since 1983. Nuclear industry has to adapt to this new market by proposing innovative technological solutions in the reactor maintenance field. This document gathers the 9 papers presented at the conference. The main improvements concern repair works on internal components of PWR-type reactors, the replacement of major components of the primary coolant circuit and surface treatments to limit the propagation of damages. The first paper shows that adequate design and feedback experience are good assets to manage the ageing of a nuclear unit. Another paper shows that a new repair method of a relief valve can avoid its replacement. (A.C.)

  7. Is there any future for nuclear weapons?; Les armes nucleaires ont-elles un avenir?

    Energy Technology Data Exchange (ETDEWEB)

    Heisbourg, F.

    2011-07-01

    Nuclear weapons occupy a paradoxal place both in the collective imagination and in the historical reality: on the one hand everybody dreads the apocalypse horror, and on the other hand, dissuasion appears as an unchanging and quite comfortable situation. However, the world has become multipolar in this domain as well. The geopolitical map is reconstructing. Doctrinal revisions, initiatives against nuclear weapons proliferation, and nuclear disarmament measures are now on the agenda. The best foreign and French experts examine for the first time the consequences of these evolutions. They analyse in particular the split up risks and the potential consequences of a nuclear conflict in regions where atomic arms have become a key-component of the strategic landscape: Middle-Est, Far-East, Southern Asia. The choices France and its allies will have to face are examined as well. (J.S.)

  8. Fire protection of PWR-type nuclear power plants; Protection incendie des centrales nucleaires REP

    Energy Technology Data Exchange (ETDEWEB)

    Kaercher, M. [Electricite de France (EDF), 75 - Paris (France)

    2004-07-01

    This article presents the fire protection principles applied by Electricite de France (EdF) to PWR-type nuclear power plants, and stresses on the recent evolutions of the design and exploitation approach of fire protection which have contributed to the improvement of nuclear facilities safety: 1 - general presentation; 2 - objectives of the fire protection: integrity of safety systems, personnel and people protection, equipments protection and keeping up of availability; 3 - design requirements: fire prevention, fire confinement, fire mastery, checking approach, formalization of the design approach, experience feedback of the design approach; 4 - example of application, the Chooz B power plant, head of the N4 step series: common dispositions to the different buildings, protection of the reactor building, protection of electrical facilities, protection of the turbine building, protection of transformers, protection of the emergency power sets, protection of hydrogen hazard buildings; 5 - in-service protection: intervention of the operator, fire fighting organization, reactor operation during fire accident; 6 - conclusion. (J.S.)

  9. The nuclear power cycle; Le cycle de l'energie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    Fifty years after the first nuclear reactor come on-line, nuclear power is fourth among the world's primary energy sources, after oil, coal and gas. In 2002, there were 441 reactors in operation worldwide. The United States led the world with 104 reactors and an installed capacity of 100,000 MWe, or more than one fourth of global capacity. Electricity from nuclear energy represents 78% of the production in France, 57% in Belgium, 46% in Sweden, 40% in Switzerland, 39% in South Korea, 34% in Japan, 30% in Germany, 30% in Finland, 26% in Spain, 22% in Great Britain, 20% in the United States and 16% in Russia. Worldwide, 32 reactors are under construction, including 21 in Asia. This information document presents the Areva activities in the nuclear power cycle: the nuclear fuel, the nuclear reactors, the spent fuel reprocessing and recycling and nuclear cleanup and dismantling. (A.L.B.)

  10. Thematic sheets on the nuclear energy; Fiches thematiques sur l'energie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Tevissen, E.; Galle, Ch.; L' Hostis, V.; Millard, A.; Moulin, Ch.; Mauchien, P.; Vitart, X.; Rivalier, P.; Diop, Ch.; Boullis, B.; Feron, D.; Santarini, G.; Lieven, Th.; Laffont, G.; Cachon, L.; Moulin, C

    2004-07-01

    This document presents eleven description sheets of researches realized in the CEA laboratories. The following topics are concerned: the diffusion of tritiated water, iodine 125 and chlorine 36 in the Meuse/Haute-Marne rocks of the underground laboratory of Bure; effect of the granulates nature on the thermal and hydro mechanics behavior of concrete at high temperature (60-450 C); first validation of a damage model for reinforced concrete affected by the corrosion of its reinforcements; analysis of pollutants traces; centrifuge extractors of the high activity laboratory; the advanced partitioning; the disadvantages of the Monte-Carlo method in the radiation protection domain; the Purex process; materials damage by enzymes; the acoustic emission applied for the materials corrosion; the helium circuits technology for the gas cooled reactors; high level speciation. (A.L.B.)

  11. Introduction to nuclear energy; Introduction a l'energie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    After some descriptions about atoms, fission and fusion, explanations are given about the functioning of a nuclear power plant. The safety with the different plans of emergency and factors that lead to a better nuclear safety are exposed, then comes a part for the environmental protection; the fuel cycle is tackled. Some historical aspects of nuclear energy finish this file. (N.C.)

  12. Transparency associated with the nuclear fuel cycle; Transparence associee au cycle du combustible nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2009-07-01

    This document presents the different fuel cycle stages with which the CEA is associated, the annual flow of materials and wastes produced at these different stages, and the destiny of these produced materials and wastes. These information are given for the different CEA R and D activities: experimentation hot laboratories (activities, fuel cycle stages, list of laboratories, tables giving annual flows for each of them), research reactors (types of reactors, fuel usage modes, annual flows of nuclear materials for each reactor), spent fuel management (different types of used materials), spent fuels and radioactive wastes with a foreign origin (quantities, processes)

  13. Institut National des Sciences et Techniques Nucleaires. From academic to vocational: specificity and vision

    Energy Technology Data Exchange (ETDEWEB)

    Turpin, Laurent [Institut National des Sciences et Techniques Nucleaires - INSTN, CEA-Saclay (France)

    2008-07-01

    - What is INSTN?: Teaching and training service of CEA; Capability of awarding degrees; Stand-alone: only specialty degrees; Partnership with universities and Engineer schools: master degrees; Professional training operator for CEA and for SMEs. - Corner stones for the next future (5-10 years): increasing the capability in nuclear training (Nuclear skills for nuclear engineers (reactor physics,...), factor 3-4, Nuclear skills for non-nuclear engineers (civil works, project management,...), All stakeholders have to do more (Academics on basic knowledge (have to prepare to a wide range of positions), Specialty institutes on specialized knowledge (before the job and on the job), Internal programs on proprietary programs), optimizing the resources (No false hope: more training means higher costs but does not mean nuclear companies will lay golden eggs; Availability of teaching resource and capability of internship tutoring could be bottlenecks; Trained/graduate production must match actual human resources needs). - A strategy for INSTN: Academic partnerships, to implement nuclear modules within training programs; With companies, a stakeholder-shareholder joint venture model for postgraduate training; Open to European and offshore cooperation.

  14. Elecnuc. Nuclear power plants in the world. 1997; Elecnuc. Les centrales nucleaires dans le monde. 1997

    Energy Technology Data Exchange (ETDEWEB)

    Maubacq, F.; Tailland, C

    1997-04-01

    This small booklet provides information about all type of nuclear power plants worldwide. It is based on the data taken from the CEA/DSE/SEE Elecnuc database. The content comprises: the 1996 highlights, the main characteristics of the different type of reactors in operation or under construction, the map of the French nuclear power plant sites, the worldwide status of nuclear power plants at the end of 1996, the nuclear power plants in operation, under construction or on order (by groups of reactor-types), the power capacity evolution of power plants in operation, the net and gross capacity of the power plants on the grid, the commercial operation and grid connection forecasts, the first achieved or expected power generation supplied by a nuclear reactor for each country and the power generation from nuclear reactors, the performance indicator of the PWR units in France, the trends of the power generation indicator worldwide, the nuclear power plants in operation, under construction, on order, planned, cancelled, decommissioned and exported worldwide, the schedule of steam generator replacements, and the MOX fuel plutonium recycling programme. (J.S.)

  15. Elecnuc. Nuclear power plants in the world; Elecnuc. Les centrales nucleaires dans le monde

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-07-01

    This small booklet summarizes in tables all the numerical data relative to the nuclear power plants worldwide. These data come from the French CEA/DSE/SEE Elecnuc database. The following aspects are reviewed: 1997 highlights; main characteristics of the reactor types in operation, under construction or on order; map of the French nuclear power plants; worldwide status of nuclear power plants at the end of 1997; nuclear power plants in operation, under construction and on order; capacity of nuclear power plants in operation; net and gross capacity of nuclear power plants on the grid and in commercial operation; forecasts; first power generation of nuclear origin per country, achieved or expected; performance indicator of PWR units in France; worldwide trend of the power generation indicator; nuclear power plants in operation, under construction, on order, planned, cancelled, shutdown, and exported; planning of steam generators replacement; MOX fuel program for plutonium recycling. (J.S.)

  16. Laser spectroscopy used in nuclear physics; La spectroscopie laser appliquee a la physique nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Le Blanc, F

    2001-04-05

    The study of nuclear shapes is a basic topic since it constitutes an excellent ground for testing and validating nuclear models. Measurements of the electron quadrupolar moment, of the nuclear charge radius and of the magnetic dipolar moment shed light on the nuclear deformation. Laser spectroscopy is a specific tool for such measurements, it is based on the interaction of the nucleus with the surrounding electron cloud (hyperfine structure), it is then an external approach of the shape of the nucleus whereas the classical nuclear spectroscopy ({alpha}, {beta} or {gamma}) gives information on the deformation from the inside of the nucleus. The author describes 2 techniques of laser spectroscopy: the colinear spectroscopy directly applied to a beam issued from an isotope separator and the resonant ionization spectroscopy linked with atom desorption that allows the study of particular nuclei. In order to illustrate both methods some effective measurements are presented: - the colinear spectroscopy has allowed the achievement of the complete description of the isomeric state (T = 31 years) of hafnium-178; - The experiment Complis has revealed an unexpected even-odd zigzag effect on very neutron-deficient platinum isotopes; and - the comparison of 2 isotopes of gold and platinum with their isomers has shown that the inversion of 2 levels of neutron, that was found out by nuclear spectroscopy, is in fact a consequence of a change in the nuclear shape. (A.C.)

  17. What can be done with nuclear wastes?; Que faire des dechets nucleaires?

    Energy Technology Data Exchange (ETDEWEB)

    Simon, A.; Piechowski, J.; Monchicourt, M.O

    2001-07-01

    In this book, a technical adviser of the French atomic energy commission (CEA) answers the questions of the author about nuclear wastes: how are they produced? Where are they stored? Are they dangerous? How do we protect against their harmful effects? (J.S.)

  18. Back end of the nuclear fuel cycle; Aval du cycle du combustible nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Dognon, J.P.; Rabbe, C.; Beudaert, Ph.; Lamare, V.; Wipff, G.; Moisy, Ph.; Charrin, N.; Blanc, P.; Den Auwer, Ch.; Revel, R.; Charbonnel, M.C.; Presson, M.T.; Cau Dit Coumes, C.; Chopin-Dumas, J.; Devisme, F.; Rat, B.; Hill, C.; Guillaneux, D.; Madic, C.; Carrera, A.; Dozol, J.F.; Rouquette, H.; Allain, F.; Virelizier, H.; Moulin, Ch.; Lemort, F.; Orlhac, X.; Fillet, C.; Carpena, J.; Advocat, T.; Leturcq, G.; Lacombe, J.; Bonnetier, A.; Ribet, I.; Poitou, S.; Richaud, D.; Fiquet, O.; Gramondi, P.; Massit, H.; Meyer, D.; Conocar, O.; Pettier, J.L.; Raphael, T.; Bouniol, P.; Sercombe, J.; Badouix, P.; Adenot, F.; Le Bescop, P.; Mazoin, C.; Motellier, S.; Charles, Y.; Richet, C.; Ayache, R.; Pitsch, H.; Ly, J.; Beaucaire, C.; Devol-Brown, I.; Libert, M.F.; Besnainou, B

    1999-07-01

    In this chapter of the DCC 1999 scientific report, the following theoretical studies are detailed: electronic structure of lanthanides or actinides complexes, forecasting of the stoichiometry of europium nitrate complexes, actinides aqueous solutions analytical and thermodynamical chemistry, actinides complexes structural determination. It also provides experimental studies: actinides and lanthanides separation, radioactive wastes processing and conditioning, plasma torch vitrification process, simulation of the wastes packages characterization, wastes storage with concrete behaviour and biodegradation. (A.L.B.)

  19. Phasing out nuclear, a credible scenario; Sortir du nucleaire, un scenario credible

    Energy Technology Data Exchange (ETDEWEB)

    Chatelain, C.; Mulot, R.; Chauveau, L.; Hait, J.F.

    2011-08-15

    Based on data from different companies, institutions and associations involved in nuclear energy (either in its production or in its critic), this article comments the possible energy savings (50 to 64%) that may be reached in the different sectors, and more particularly in the building sector and in electrical equipment. It discusses the potential production from solar, wind and biogas energy. It notices that phasing out nuclear is possible by 2030-2050, but would entail an increase of electricity prices. The German approach is presented. An article comments the anger of Fukushima Japanese farmers and evokes the slow building up of a solidarity network between France and Japan. A last article comments the authorization given to a further exploitation of the Fessenheim nuclear power plant (ten more years)

  20. Prospective analysis. Nuclear deterrence in 2030; Essai de prospective. La dissuasion nucleaire en 2030

    Energy Technology Data Exchange (ETDEWEB)

    Tertrais, B

    2006-12-15

    This study is a prospective analysis of the long-term future of nuclear weapons, and particularly the future of French nuclear deterrence after 2015. The selected time period is 2025-2030. The principal objective is to reflect on what the nuclear world might look like during the first part of the 21 st century, beyond the modernization decisions already planned or envisaged, and to draw conclusions for the future of the French deterrent. (author)

  1. The underground nuclear wastes storage; Le stockage des dechets nucleaires en site profond

    Energy Technology Data Exchange (ETDEWEB)

    Nifenecker, H. [Institut des Sciences Nucleaires, CNRS/IN2P3, 38 - Grenoble (France); Ouzounian, G. [Agence Nationale pour la Gestion des Dechets Radioactifs ANDRA, 92 - Chatenay Malabry (France)

    2002-07-01

    In the radioactive wastes management, the underground storage seems to be the long dated solution and the reference strategy. Then this storage has to be studied in term of accidental diffusion of radionuclides in the geologic site and in the food chain transfer. This document presents analytical models of diffusion which may help physicists to evaluate underground storage sites and the impacts on the environment and the human health. (A.L.B.)

  2. Elecnuc. Nuclear power plants in the world; Elecnuc. Les centrales nucleaires dans le monde

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-07-01

    This 2003 version of Elecnuc contents information, data and charts on the nuclear power plants in the world and general information on the national perspectives concerning the electric power industry. The following topics are presented: 2002 highlights; characteristics of main reactor types and on order; map of the French nuclear power plants; the worldwide status of nuclear power plants on 2002/12/3; units distributed by countries; nuclear power plants connected to the Grid by reactor type groups; nuclear power plants under construction; capacity of the nuclear power plants on the grid; first electric generations supplied by a nuclear unit; electrical generation from nuclear plants by country at the end 2002; performance indicator of french PWR units; trends of the generation indicator worldwide from 1960 to 2002; 2002 cumulative Load Factor by owners; nuclear power plants connected to the grid by countries; status of license renewal applications in Usa; nuclear power plants under construction; Shutdown nuclear power plants; exported nuclear power plants by type; exported nuclear power plants by countries; nuclear power plants under construction or order; steam generator replacements; recycling of Plutonium in LWR; projects of MOX fuel use in reactors; electricity needs of Germany, Belgium, Spain, Finland, United Kingdom; electricity indicators of the five countries. (A.L.B.)

  3. Nuclear bad year in perspective in 2007; Nucleaire mauvaise annee en perspective en 2007?

    Energy Technology Data Exchange (ETDEWEB)

    Melquiot, P

    2007-07-01

    The author presents a mixed evaluation of the nuclear after the announcement of the shutdown of 7 reactors in the world. The report factor 4 precises that the nuclear energy represents only 2% of the final energy in the world and shows the poor part of the nuclear in the fight against the greenhouse effect. (A.L.B.)

  4. Report transparency and nuclear safety 2007 CEA Saclay; Rapport transparence et securite nucleaire 2007 CEA Saclay

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    This report presents the activities of the CEA Center of Saclay for the year 2007. The actions concerning the safety, the radiation protection, the significant events, the release control and the environmental impacts and the wastes stored on the center are discussed. More especially two public consultation on release authorizations and the Neurospin installations, the dismantling of the 49 nuclear installation, the shutdown of the learning reactor ULYSSE are detailed. (A.L.B.)

  5. Perspectives for nuclear energy; Perspectives pour l'energie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Baugnet, J.-M.; Abderrahim, H.A.; Dekeyser, J.; Meskens, G

    1998-09-01

    In Belgium, approximately 60 percent of the produced electricity is generated by nuclear power. At present, nuclear power production tends to stagnate in Europe and North America but is still growing in Asia. The document gives an overview of the present status and the future energy demand with emphasis on electric power. Different evaluation criteria including factors hindering and factors promoting the expansion of nuclear power as well as requirements of new nuclear power plants are discussed. The extension of the lifetime of existing facilities as well as fuel supply are taken into consideration. A comparative assesment of nuclear power with other energy sources is made. The report concludes with estimating the contribution and the role of nuclear power in future energy demand as well as with an overview of future reactors and research and development programmes.

  6. The international law of nuclear weapons. Le droit international des armes nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Sur, S. (Universite Pantheon-Assas, 75 - Paris (France). Centre de Recherches Internationales)

    1998-01-01

    The first chapter concerns the questions of non proliferation and non dissemination. Then, the problems bound to nuclear testing are examined in the second chapter. The process of destruction and restriction of weapons are treated in the third chapter. Then, the fourth chapter analyzes the conditions and the perspectives of a negotiation on the cessation of fissile matter production for military uses and more broadly, an obligation to negotiate a nuclear disarmament. (N.C.)

  7. The international law of nuclear weapons; Le droit international des armes nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Sur, S. [Universite Pantheon-Assas, 75 - Paris (France). Centre de Recherches Internationales

    1998-12-31

    The first chapter concerns the questions of non proliferation and non dissemination. Then, the problems bound to nuclear testing are examined in the second chapter. The process of destruction and restriction of weapons are treated in the third chapter. Then, the fourth chapter analyzes the conditions and the perspectives of a negotiation on the cessation of fissile matter production for military uses and more broadly, an obligation to negotiate a nuclear disarmament. (N.C.)

  8. The juridical issues of nuclear activities; Le droit des activites nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Guillaume, M.; Kerever, A. [State adviser, (France); Pasquier, J.L. [Office de Protection contre les Rayonnements Ionisants, 78 - le Vesinet (France); Brillanceau, F. [French Ministry of Labour, (France); Besson, J.P. [CIREA, (France); Chaumette, L.; Niel, J.C.; Reculeau, Y. [Institut de Protection et de Surete Nucleaire (IPSN), (France); Treflez, M.; Pezennec, D. [CEA Agence Nationale pour la Gestion des Dechets Radioactifs (ANDRA), 75 - Paris (France); Cochaud, J.F.; Phan Van, L. [Electricite de France, 75 - Paris (France). Direction de l`Equipement; Biad, A. [Rouen Univ., 76 - Mont-Saint-Aignan (France). Faculte de droit, de sciences economiques et de gestion; Darricau, A. [Compagnie Generale des Matieres Nucleaires (COGEMA), (France); Cormis, F. de [Electricite de France (EdF). Mission Protection et Controle des Matieres Nucleaires (France); Galmot, Y. [Commission Interministerielle des Installations Nucleaires de Base (CIINB), (France); Saint-Raymond, P. [Ministere de l`Industrie, des Postes et Telecommunications et du Commerce Exterieur, 75-Paris (France). Direction de la Surete des Installations Nucleaires; Guenon, C.; Laurens Bernard, O. [Ministere de l`Interieur. Dir. de la Defense et de la Securite Civiles (France); Blanchard, P. [Electricite de France (EdF). Service juridique national (France); Robert, J.H. [Univ. Pantheon-Assas, 75 - Paris (France)

    1997-11-01

    This issue is dedicated to the juridical aspects of civil nuclear activities. It comprises 3 parts and 16 papers. Radiation protection law is dealt with in part 1: prevention of risks due to ionizing radiations in occupational environment; sources and men; the regulation of radioactive materials transport; the regulation of the rejection of gaseous and liquid radioactive effluents. Part 2 tackles the question of checking the pacific uses of nuclear energy, that is the juridical consequences of the non-proliferation and physical protection policies are reviewed: international efforts that aim to limit the military uses of nuclear energy; the juridical and practical aspects of non-proliferation rules and international controls; the national control of radioactive materials. The juridical framing of nuclear activities, nuclear civil liability and infraction of the law are gathered in part 3: the CIINB and its contribution to the safety of nuclear installations; the mining law; the control of nuclear installations safety; the influence of the realization of the nuclear program on the evolution of the French law; the intervention of the administrative judge in nuclear affairs; the protection of population against nuclear risk - statement of existing provisions and new trends; the special regime of the civil nuclear responsibility - at the time of change; the penal infractions of the nuclear law. (J.S.)

  9. Nuclear energy: exit or revival? International aspects; Energie nucleaire: sortie ou relance? Aspects internationaux

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-11-01

    This colloquium took place less than 1 year after the decision of the US of revival of their nuclear program. Thus the international context has changed, even if nuclear contestation remains as strong as in the past. Among governments, some positions preach the banishment of nuclear energy while others consider the nuclear option as the only solution to meet the growing up energy demand and the future environmental and economical stakes. This report makes a synthesis of the different talks given by the participants during the 3 round tables of the colloquium on the future of nuclear energy: the ecological stake, the democratic stake, and the energy policy stake. Four talks of French government representatives open and conclude the debates of the different round tables. (J.S.)

  10. Electromagnetic nuclear life time - theoretical context; Temps de vie electromagnetique nucleaire - contexte theorique

    Energy Technology Data Exchange (ETDEWEB)

    Niez, J.J

    2000-07-01

    One describes here the theoretical tools which are needed for evaluating the nuclear lifetime of a nucleus dipped into electromagnetic surroundings which are composed of electrons and photons. The case where this environment is a material or a cavity will be treated in a following report. (Author)

  11. The control of base nuclear installations; Le controle des installations nucleaires de base (INB)

    Energy Technology Data Exchange (ETDEWEB)

    Anon

    2009-04-15

    The Authority of Nuclear Safety ( A.S.N). presents in this column the current events of the control of the nuclear base installations during november, december 2008 and january 2009, classified by nuclear site. This information is also available in real-time on the A.S.N. web site, www.asn.fr, in the column 'news'. We can consult all the notices of significant incident published as well as the following letters of inspection, the notices of information about the reactors shutdown, press releases and the A.S.N. information notes. (N.C.)

  12. Simulations. 3D nuclear reactions; Simulations. Reactions nucleaires en 3D

    Energy Technology Data Exchange (ETDEWEB)

    Deleurence, Guillaume

    2012-05-15

    At CEA Saclay, the research programme for the forth generation of nuclear reactors, named 'Astrid' (Advanced Sodium Technological Reactor for Industrial Demonstration) of the Direction of nuclear energy (DEN), uses 2D or 3D movies and a 16 m{sup 2} image wall for the display of simulation results. This digest paper focusses on the technological means used for the simulations: the Curie supercomputer designed by Bull and the images display device. (J.S.)

  13. Nucleaire et Energies Nr 64 - December 2014. A review of the year

    International Nuclear Information System (INIS)

    Lenail, Bernard; Ducroux, Guy; Salanave, Jean-Luc; Miquel, Pierre; Seyve, Claude; Simonnet, Jacques; Justin, Francois; Darricau, Aime; Raisonnier, Daniele; Deleigne, Francoise

    2014-12-01

    After an introduction which proposes a large overview of what went on in different countries in the field of energy, and more particularly nuclear energy, during 2014, three articles address energy issues: an overview of the evolution of the energy sector (oil price sharp decrease, issue of subsidies to energy in Europe, perspectives of energy transition with objectives related to energy production and consumption), a discussion about the role and use of biomass from the fire age to the era of carbon sequestration, and a presentation of the Chevilly-Larue site of geothermal energy. Three article concern nuclear activities: recent events in the mining and fuel fabrication sector, overview of the situation of reactors, whether planned or under construction in different countries, overview of activities and events related to the back-end of the fuel cycle and to decommissioning in different countries. Two articles address societal issues related to nuclear: safety and environment (a European directive, inspections and safety exercises in various French nuclear power plants, the situation in Fukushima, severe accidents in France, the issue of low doses), and a comment on the decision to stop the Osiris reactor

  14. The nuclear energy in the United Kingdom; L'energie nucleaire au Royaume-Uni

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-02-15

    With challenges like the climatic change, the hydrocarbons prices increase and the energy supply security, the nuclear park is becoming a decisive and an urgent question in the United Kingdom. The author proposes an historical aspect of the nuclear energy in UK, the actors of the today nuclear industry and the technologies used in 2006, the radioactive wastes management, the programs of the future and the british opinion on the nuclear. (A.L.B.)

  15. Nuclear law and new legal concepts; Droit nucleaire et concepts juridiques nouveaux

    Energy Technology Data Exchange (ETDEWEB)

    Atias, Ch.; Warusfel, B. [Paris-5 Univ., 75 (France); Byk, Ch. [Association Internationale droit, ethique et science, 75 - Paris (France)

    2003-02-01

    The articles on this topic have been written from three of the papers of the Conference organized on January 14, in Paris by the 'Law and Insurance' Section of the French Nuclear Energy Society together with the French Section of the International Nuclear Law Association. The first two articles deal with transparency, its justifications and limits. The third article analyses the rights of the future generations and our duties towards them. (authors)

  16. The technological prospective of non nuclear channels; La prospective technologique des filieres non nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Claverie, M.; Clement, D.; Girard, C

    2000-07-15

    This prospective study concerns the electric power demand in 2050. It examines the three non nuclear sectors of production: the natural gas combined cycle power plants, the wind turbines among the renewable energies and the cogeneration electric power - heat in the ternary and building sector. The necessity of the network adaptation to the european competition and the decentralized production of electric power will suppose new investments of transport and storage. (A.L.B.)

  17. For a nuclear waste law in Tunisia; Pour un droit des dechets nucleaires en Tunisie

    Energy Technology Data Exchange (ETDEWEB)

    Bouraoui, S. [Tunis Univ. (Tunisia). Faculte des Sciences

    1996-10-01

    This paper deals with the organization of the tunisian laws as far as radioactive wastes are concerned. Throughout the examples of domestic, industrial and dangerous wastes in general, the regulation system is described with its main objectives and its weaknesses. (TEC).

  18. Institutional system for the nuclear activities regulations; Cadre institutionnel pour la reglementation des activites nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Aissa, M.

    1996-10-01

    This paper points out the necessity of the laying down of regulations and institutions in the field of nuclear energy, due to the diversity of nuclear activities. Therefore different laws have been elaborated dealing with the use of nuclear energy and techniques, the control of nuclear facilities, the management and the transport of radioactive wastes and civil liability in nuclear damage. (TEC).

  19. Reflection on penal policy in nuclear matters; Reflexion sur la politique penale en matiere nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Cisse, A. [Tunis Univ. (Tunisia). Faculte des Sciences

    1996-10-01

    This document expresses ethical reflexions as far as nuclear energy development is concerned. The potential diversion of the peaceful use of nuclear energy results in the necessity of a criminal policy which would control the nuclear regulations. For each potential nuclear infringement, systems of laws are established either to prevent damages or to penalize them. (TEC).

  20. The nuclear energy: law and fear; Le nucleaire: droit et peur

    Energy Technology Data Exchange (ETDEWEB)

    Mezghani, A. [Tunis Univ. (Tunisia). Faculte des Sciences

    1996-10-01

    This document mentions the feeling of fear which goes along the idea of nuclear energy, as well as ethics and law. Technological aspects, political choices and financial matters are responsible for the nuclear energy development. Then it is shown that the consequences of this development is the continuous feeling of fear and risk which goes with every nuclear activities. (TEC).

  1. Nuclear organizations in France - USA - Japan; Organisations nucleaires France - USA- Japon

    Energy Technology Data Exchange (ETDEWEB)

    David, J.L.

    1996-10-01

    After an history of the nuclear events of the post-war period in the world, the nuclear organization in three different countries is developed. First, the case of France is described with a chronological account of events, as well as the intern and international laws. Then, the importance of nuclear energy in the electricity production in the USA is put forward. Finally, the nuclear organization in Japan is presented in the same way. (TEC). 4 figs., 1 tab.

  2. Radiation protection in nuclear facilities; Dossier: Radioprotection et installations nucleaires de base

    Energy Technology Data Exchange (ETDEWEB)

    Piechowski, J. [Direction Generale de la Sante, 75 - Paris (France); Lochard, J.; Lefaure, Ch.; Schieber, C.; Schneider, Th [Centre d`Etude sur l`evaluation de la protection dans le domaine nucleaire (CEPN), 75 - Paris (France); Lecomte, J.F. [CEA Fontenay-aux-Roses, 92 (France). Inst. de Protection et de Surete Nucleaire; Massuelle, M.H.; Hubert, Ph. [CEA Fontenay-aux-Roses, 92 (France). Inst. de Protection et de Surete Nucleaire, Dept. de Protection de la Sante de l`Homme et de la Dosimetrie (DPHD); Delmont, D. [CEA Grenoble, 38 (France). Service de Protection contre les Rayonnements et de Surveillance de l`Environnement (SPRSE); Boitel, S.; Le Fauconnier, J.P. [CEA Centre d`Etudes de Valduc, 21 - Is-sur-Tille (France). Dept. de Support Technique et Administratif; Kalimbadjian, J. [Cogema la Hague, 50 (France). Service de Prevention et de Radioprotection; Laize, J. [Cogema la Hague, 50 (France). Groupe Radioprotection atelier T7; Blain, A. [Framatome, 69 - Lyon (France). Dept. Radioprotection Securite des Services Nucleaires; Cassou, M. [Electricite de France (EDF), 13 - Marseille (France). Projet RGV; Jacq, V.; Champion, D. [Ministere de l`Industrie, des Postes et Telecommunications et du Commerce Exterieur, 75-Paris (France). Direction de la Surete des Installations Nucleaires; Spira, A.; Bouton, O. [Institut National de la Sante et de la Recherche Medicale (INSERM), Paris-11 Univ. (France); Sugier, A [CEA Fontenay-aux-Roses, 92 (France). Inst. de Protection et de Surete Nucleaire; Bishop, A.J. [Commission de Controle de l`Energie Atomique, 75 - Paris (France); Zerbib, J.C. [Conseil superieur de la Surete et de l`information Nucleaires, 75 - Paris (France); Barbey, P. [Association pour le Controle de la Radioactivite dans l`Ouest, ACRO (France)

    1998-06-01

    Close ties exist between nuclear safety and radiation protection. Nuclear safety is made up of all the arrangements taken to prevent accidents occurring in nuclear facilities, these accidents would certainly involved a radiological aspect. Radiation protection is made up of all the arrangements taken to evaluate and reduce the impact of radiation on workers or population in normal situations or in case of accident. In the fifties the management of radiological hazards was based on the quest for minimal or even zero risk. This formulation could lead to call some activities in question whereas the benefits for the whole society were evident. Now a new attitude more aware of the real risks and of no wasting resources prevails. This attitude is based on the ALARA principle whose purpose is to maintain the exposure to radiation as low as reasonably achievable taking into account social and economic concerns. This document regroups articles illustrating different aspects of the radiation protection in nuclear facilities such as a research center, a waste vitrification workshop and a nuclear power plant. The surveillance of radiological impacts of nuclear sites on environment is examined, a point is made about the pending epidemiologic studies concerning La Hague complex. (A.C.) 20 refs.

  3. Front end of the nuclear fuel cycle; Amont du cycle du combustible nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Leroux, S.; Gueneau, C.; Le Ny, J.; Camel, D.; Drevet, B.; Granier, J.; Doneddo, F.; Roblin, P.; Van Wambeke, C.; Bouty, O.; Michel, N.; Thro, P.U.; Dupuy, P.; Farcage, D.; Schildknecht, J.; Lompre, L.A.; L' Hermite, D.; Comte, M.; Gobert, O.; De Lamare, J

    1999-07-01

    In this chapter of the DCC 1999 scientific report, the following theoretical studies are detailed: condensation and flow of a binary metallic alloy in a two phase domain, a model of gas centrifuge separative performance called TRYPHON, an estimation of electron gun cathodes erosion. It also provides technological developments and instrumentation studies: a power improvement of diode-pumped solid state lasers, measurement using intracavity near resonant propagation in atomic vapours. (A.L.B.)

  4. Nuclear disarmament: France as a model; Desarmement nucleaire: prendre la France pour modele

    Energy Technology Data Exchange (ETDEWEB)

    Wodka-Gallien, Philippe [Institut francais d' analyse strategique, 12-14 rue du general Niox, 75016 Paris (France)

    2012-02-15

    The path taken by the French nuclear weapon programme shows unceasing pragmatism combined with a will to maintain the deterrence capability of the arsenal and the position it accords the country in the world's strategic structure. The abolition recommended by the US President would leave military matters open to conventional superpowers

  5. Nuclear or radiology: which term to use?; Nucleaire ou radiologique: quel terme utiliser?

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    This document brings information and definition to help the public in the distinction between the two terms: nuclear and radiologic. What means the words nuclear and radiologic in the physics and common languages? In which situation an accidental or malevolent event can be called nuclear or radiologic? By which technic and for which use is concerned the radiology? It concludes by recommendation for the choice of one or the other term. (A.L.B.)

  6. The nuclear risk: Chernobylsk eight years after. Le risque nucleaire: Tchernobyl huit ans apres

    Energy Technology Data Exchange (ETDEWEB)

    Giraud, R.

    1994-01-01

    When Chernobylsk-4 reactor explodes in april 1986, more than 1.8*10[sup +18] becquerels were disseminated around. Effects on human populations show that thyroid cancers, leukemias, stress effects (increase of drugs and alcohol consumption, psychosomatic troubles...) strongly growth, and that low radiation doses carry a deregulation of lipids metabolism. A new sarcophagus must be built. Treatment of radioactive wastes (350.000 m[sup 3]) was done in urgency and must be done now or put in the new sarcophagus. And there are in the ex-USSR 15 high risks reactors. (A.B.). 5 refs., 9 photos.

  7. The nuclear energy: an ecological solution?; L'energie nucleaire: solution ecologique?

    Energy Technology Data Exchange (ETDEWEB)

    Lung, M.; Comby, B. [Societe Generale pour les Techniques Nouvelles (SGN), 78 - Saint-Quentin-en-Yvelines (France)

    2001-10-01

    In the future the developing countries energy needs will increase considerably. How this demand can be satisfy with a protection policy of the environment and of the future generations? Some solutions are proposed with a special interest for the nuclear energy. (A.L.B.)

  8. Chinon nuclear facilities. 2009 annual report; Installations nucleaires de Chinon. Rapport annuel 2009

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2010-07-01

    This annual report is established on account of article 21 of the 2006-686 French law from June 13, 2006, relative to the transparency and safety in the nuclear domain. It describes, first, the nuclear facilities of Chinon, and then the measures taken to ensure their safety (personnel radioprotection, actions implemented for nuclear safety improvement, organisation in crisis situation, external and internal controls, technical assessment of the facilities, administrative procedures carried out in 2009), incidents and accidents registered in 2009, radioactive and chemical effluents released by the facilities in the environment, other pollutions, management of radioactive wastes, and, finally, the actions carried out in the domain of transparency and public information. A glossary and the viewpoint of the Committee of Hygiene, safety and working conditions about the content of the document conclude the report. (J.S.)

  9. Report transparency and nuclear safety 2007 CEA Grenoble; Rapport transparence et securite nucleaire 2007 CEA Grenoble

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    This report presents the activities of the CEA Center of Grenoble for the year 2007. Since 2002 the Passage project aims to realize the decontamination and the dismantling of old nuclear installations of the CEA Grenoble. The actions concerning the safety, the radiation protection, the significant events, the release control and the environmental impacts and the wastes stored on the center are discussed. More especially the year 2007 saw two main steps of the Passage project: the decommissioning of the Siloette reactor, a public consultation about the Lama laboratory dismantling. (A.L.B.)

  10. Report transparency and nuclear safety 2007 CEA Marcoule; Rapport transparence et securite nucleaire 2007 CEA Marcoule

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    This report presents the activities of the CEA Center of Marcoule for the year 2007. Since its creation in 1955 the center realizes industrial and scientific activities relative to the civil and military applications of the radioactivity. The actions concerning the safety, the radiation protection, the significant events, the release control and the environmental impacts and the wastes stored on the center are discussed. More especially the following two base activities are detailed: Atalante and Phenix. (A.L.B.)

  11. Report transparency and nuclear safety 2007 CEA Cadarache; Rapport transparence et securite nucleaire 2007 CEA Cadarache

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    This report presents the activities of the CEA Center of Cadarache for the year 2007. The actions concerning the safety, the radiation protection, the significant events, the release control and the environmental impacts and the wastes stored on the center are discussed. More especially the report discusses the beginning of the RJH reactor construction, the fourth generation reactors research programs, the implementing of la Rotonde the new radioactive wastes management installation, the renovation of the LECA. (A.L.B.)

  12. The nuclear in Italy - state of the art; Le nucleaire en Italie - etat des lieux

    Energy Technology Data Exchange (ETDEWEB)

    Schifano, F.; Ziller, T

    2007-02-15

    This report aims to evaluate the italian situation in matter of the nuclear, following the referendum of 1987 which decided to stop the nuclear power plants in the country. The first part is devoted to the historical aspects of the nuclear sector in Italy. The second chapter presents the institutional and legislative framework. The third chapter discusses the today situation and the italian actors of the nuclear, from the radioactive wastes management and the dismantling of nuclear installations to the engineering service realized in other countries. It discusses also the research and development programs. The last chapter proposes perspectives of the debate around a possible restart of the nuclear activity in Italy.

  13. Nuclear medicine and non Hodgkin malignant lymphomas; Medecine nucleaire et lymphomes malins non hodgkiniens

    Energy Technology Data Exchange (ETDEWEB)

    Solary, E.; Chatal, J.F. [Institut National de la Sante et de la Recherche Medicale, INSERM U517- IFR 100, 21- Dijon (France); Institut National de la Sante et de la Recherche Medicale, INSERM U- IFR 26, 44 - Nantes (France)

    2002-10-01

    The radioimmunotherapy of non Hodgkin lymphoma is a new step in the clinical development of the internal radiotherapy in nuclear medicine. It opens the door to the more difficult and still uncertain application to solid tumors. (N.C.)

  14. Nucleaire et Energies Nr 67 - December 2015. COP21: diplomatic success, a first step

    International Nuclear Information System (INIS)

    Lenail, Bernard; Ducroux, Guy; Salanave, Jean-Luc; Seyve, Claude; Simonnet, Jacques; Justin, Francois; Salanave, Jean-Luc; Darricau, Aime; Raisonnier, Daniele; Deleigne, Francoise; Lepine, Gerard; Witkowski, Didier; Knoche, Philippe

    2015-12-01

    After a first article which comments the results of the Paris Climate Conference (COP21), two articles address recent evolutions in the energy sector: an overview of recent evolutions (perspective for oil reserves, relationship between Gazprom and the EU, news about wind and solar energy in Europe, India, and in France with the most powerful European photovoltaic installation near Bordeaux, electricity prices, reduction of taxes on solar and wind energy foreseen for 2017), and a comparison between renewable energies and the EPR in terms of investment profitability. Three articles concern nuclear activities: recent events about reactors (IAEA forecast, situation and debates in France, Belgium, UK, Sweden, Romania, Slovenia, Russia, Ukraine, Iran, Emirates, Egypt, China, South Korea, Japan, and USA, cooperation between Argentina and China), about the back-end of the fuel cycle and decommissioning activities (activities and situation of different French facilities, activities and contracts in Japan, UK, USA, Taiwan, China, Finland, India and Spain), and the content of the IAEA report on the Fukushima accident. Articles comment issues concerning the relationship between nuclear and society: a comment about the use of the term 'green' and on what is green in nuclear, the recent evolutions negotiations on the issue of the Iranian nuclear industry with respect to non-proliferation, and a comment of the perception of climate change by French people as expressed by different surveys. A last article outlines that Areva will remain a world leader on the long term

  15. Quantitative dosing by nuclear magnetic resonance; Dosages quantitatifs par resonance magnetique nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Solomon, I. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1958-07-01

    The measurement of the absolute concentration of a heavy water reference containing approximately 99.8 per cent of D{sub 2}O has been performed, by an original magnetic resonance method ('Adiabatic fast passage method') with a precision of 5.10{sup -5} on the D{sub 2}O concentration. (author) [French] La determination du titre absolu d'une eau lourde etalon de teneur approximative de 99,8 pour cent de D{sub 2}O a pu etre effectuee par une methode originale de resonance magnetique ('Methode de passage rapide adiabatique') a une precision de 5.10{sup -5} sur le titre de D{sub 2}O. (auteur)

  16. Situation of nuclear industry in Japan; La situation du nucleaire au Japon

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-03-01

    This document presents the situation of nuclear industry in Japan: cooperation with France in the domain of the fuel cycle (in particular the back-end) and of for the industrial R and D about fast reactors and nuclear safety; present day situation characterized by a series of incidents in the domain of nuclear safety and by an administrative reorganization of the research and safety organizations; power of local representatives, results of April 2003 elections, liberalization of the electric power sector, impact of the TEPCO affair (falsification of safety reports) on the nuclear credibility, re-start up of the Monju reactor delayed by judicial procedures, stopping of the program of MOX fuel loading in Tepco's reactors, discovery of weld defects in the newly built Rokkasho-mura reprocessing plant, an ambitious program of reactors construction, the opportunity of Russian weapons dismantling for the re-launching of sodium-cooled fast reactors; the competition between France and Japan for the setting up of ITER reactor and its impact of the French/Japanese partnership. (J.S.)

  17. Radiopharmaceutical projects of CNESTEN (Centre National de l'Energie, des Sciences et des Techniques Nucleaires)

    International Nuclear Information System (INIS)

    2000-01-01

    In nuclear medicine, the prescriptions of isotopic investigations are increasing because they can provide early information about morphological anomalies and permit,so to avoid long and onerous treatments. Until now, Morocco imports the radiopharmaceuticals in spite of the difficulties related to administrative procedures. To facilitate these procedures CNESTEN has launched a project which involves the following activities: - Import and distribution of needed radiopharmaceuticals; - development and production of new radiopharmaceutical kits in cooperation with scientific partners. Priority is given to the most prescribed radiopharmaceuticals. Many kits have been produced with manufacturing protocol modifications aiming to improve and optimize the production processes. The quality of the obtained products is tested and their biodistribution kinetics are studied. (F.M.)

  18. The control of hospital wastes - 'ACROnic du nucleaire' nr 86, September 2009

    International Nuclear Information System (INIS)

    2009-09-01

    This article first describes how radioactive elements are used in hospital and research departments: in nuclear medicine (for radiotherapy, in vivo diagnosis), in isotopic analysis laboratories, in research laboratories. It indicates the nature and characteristics of frequently used radio-elements (type of emission, maximum energy, percentage of emission, period). It evokes the regulation related to waste management, and comments the assessment of controls of effluents of hospitals as they have been performed by the ACRO (variation in time during the day, technetium activity, iodine 131 activity, indium 111 activity from 2004 to 2008, other detected radionuclides). It discusses the impact on the environment (in waterways)

  19. The French nuclear program: national prospects, international cooperation; Le programme nucleaire francais: perspectives nationales, cooperations internationales

    Energy Technology Data Exchange (ETDEWEB)

    Lacoste, A. [Direction de la Surete des Installations Nucleaires (DSIN), 75 - Paris (France); Joint-Lambert, V.; Breard, G.; Jolly, B. [FRAMATOME, 92 - Paris-La-Defense (France); Durret, L.F.; Capus, G.; Lebastard, G. [Cogema, 78 - Velizy-Villacoublay (France); Ouzounian, G. [Agence Nationale pour la Gestion des Dechets Nucleaire, ANDRA, 92 - Chatenay-Malabry (France); Bouteille, F. [Nuclear Power International, (Country Unknown); Appell, B. [Electricite de France (EDF), 92 - Courbevoie (France). Service Etudes et Projets Thermiques et Nucleaires; Baret, J.P.; Esteve, B. [Electricite de France (EDF), 75 - Paris (France); Peyran, J.C. [Fragema, 69 - Lyon (France); Monnet, F. [Technicatome, Centre d`Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France); Caoul, A. [CNESTEN, (Morocco)

    1998-08-01

    This issue, with a foreword by Christian Pierret, the French Secretary of State of Industry, is bilingual (French/English). It gives a thorough overview of the French nuclear industry: present situation, expected evolutions; some typical cooperations with others countries throughout the world. It contains a leaflet in which advertisers give some information about their products and services. (author)

  20. The wastes of nuclear fission; Les dechets de la fission nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Doubre, H. [Paris-11 Univ., Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse, IN2P3/CNRS, 91 - Orsay (France)

    2005-07-01

    In this paper the author presents the problems of the radioactive wastes generated by the nuclear fission. The first part devoted to the fission phenomenon explains the incident neutron energy and the target nuclei role. The second part devoted to the nuclear wastes sources presents the production of wastes upstream of the reactors, in the reactors and why these wastes are dangerous. The third part discusses the radioactive wastes management in France (classification, laws). The last part details the associated research programs: the radionuclides separation, the disposal, the underground storage, the transmutation and the thorium cycle. (A.L.B.)

  1. La participation syndicale à la gestion environnementale des entreprises : entre responsabilité et utopie. Le cas de la CFDT et la CGT (1970--2002)

    OpenAIRE

    Bonne, Catherine

    2016-01-01

    This thesis intends to highlight, thanks to a longitudinal study, a double paradox between union, management and environment. The process that has enabled unions and more precisely confederations to gain legitimacy about environmental issues since the 1970's was reconstructed based on trade-union archives. In reply to the absurdities of society and owing to the responsibility for the employees they defend, confederations set up union environmental policies. These policies, despite being irreg...

  2. La forêt des convoitises : cent ans de politiques sociales, libérales et environnementales dans les Parcs nationaux du Mexique (1910-2013)

    OpenAIRE

    Lebreton, Clotilde; Héritier, Stéphane; Arnould, Paul; Imbernon, Jacques

    2015-01-01

    L’histoire agraire et forestière du Mexique a conduit à la configuration d’un régime foncier forestier original fondé en partie sur la propriété collective. Les parcs nationaux mexicains présentent ainsi une situation singulière dans le contexte nord-américain, habitué à un propriétaire foncier unique, l’État fédéral. Ils constituent dans ce pays des entités territoriales d’une complexité législative, réglementaire, économique, politique et sociale considérable. L’héritage de la révolution me...

  3. The environmental policies which favour the renewable energies development; Les politiques environnementales d'incitation au developpement des energies renouvelables

    Energy Technology Data Exchange (ETDEWEB)

    Menanteau, Ph.; Finon, D.; Lamy, M.L.

    2001-05-01

    Facing the climatic changes and the Europe policy of the renewable energies development, the authors wonder on the compared efficiency of the incentive tools. The study is theoretical with the presentation of the price and the quantity approaches, but also practical with concrete examples. It reveals the theoretical qualities of the green certificate approach. (A.L.B.)

  4. Quantifier ou l’art de mesurer l’utilisation des produits phytosanitaires : analyse empirico-formelle de la gestion sanitaire et environnementale des producteurs horticoles

    OpenAIRE

    Aubert, Magali

    2017-01-01

    La crise de la vache folle, la grippe aviaire ou encore la crise des poulets à la dioxine sont autant d’évènements qui ont contribué au renforcement des exigences sanitaires et phytosanitaires des pouvoirs publics et des acteurs privés. C’est dans un contexte en pleine évolution où les exigences en termes d’utilisation des pesticides s’accentuent que se positionne ce travail doctoral. Alors que les pouvoirs publics ont notamment défini, au niveau national, des niveaux de LMR (Limites Maximale...

  5. Environment project: 50 measures for a development of the high environmental quality renewable energies; Grenelle Environnement: 50 mesures pour un developpement des energies renouvelables a haute qualite environnementale

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-11-15

    This document presents the 50 measures decided by the government to develop the renewable energies in France and reach the 20% of participation to the energy production in 2020. Some measures concern all the renewable energies, they deal with the regulation, the administrative procedures of the building, others are specific to each energy. (A.L.B.)

  6. Le bilan azoté dans les exploitations porcines wallonnes : entre contraintes environnementales et qualité différenciée

    Directory of Open Access Journals (Sweden)

    Verhève D.

    2004-01-01

    Full Text Available Nitrogen balance in pig farms of the Walloon Region: between quality of production and environmental constraints. During the year 2002 and 2003, 21 pig farms were audited using the “Ecoferme” software. This software uses data commonly available at farm level to calculate nitrogen stocks and fluxes within the farm and between the farms, the environment and other enterprises. The farms were of three groups according to their specifications in pig production: organic farms, labelled farms and conventional farms. The results are given in relation to the nitrogen directive of the European Union and the Walloon right. This comparison gives information on nitrogen uses in the three contrasted pig production chains in the Walloon Region. This article shows that the environmental performances of pig farms vary strongly within the groups. Nevertheless, it shows that, even if the majority of the farms reached a target above the political goals, the labelled farms have the best global results.

  7. Methodology of environmental evaluation of wastes stabilized/solidified by hydraulic binders; Methodologie d'evaluation environnementale des dechets stabilises / solidifies par liants hydrauliques

    Energy Technology Data Exchange (ETDEWEB)

    Imyim, A.

    2000-12-15

    The aim of this work is the formalization of a methodology of evaluation of the leaching behaviour of massive porous materials obtained by stabilization/solidification of wastes. In a first part, a set of simple leaching tests is proposed which allow the physico-chemical characterization of materials. In order to better understand the phenomena involved in the release process, the methodology has been applied to hydraulic binder-based and lead-bearing synthesized materials. In a second step, a mathematical model has been proposed for the description of the leaching behaviour. The development of the model is based on the observations and experimental results obtained with the synthesized materials. Finally, the methodology of evaluation of the leaching behaviour has been applied to two cases of real wastes: the fly ashes of a Danish municipal waste incineration facility, and the galvanic sludges from an industrial waste water processing facility from Netherlands. (J.S.)

  8. L' « argument économique » dans l'aide à la décision en politique environnementale et son évanescence

    OpenAIRE

    Rouchier, Juliette; MEINARD, Yves

    2018-01-01

    Abstract – In this article, we study various so-called " decision aiding " practices used to design and implement environmental public policies, based on " economic arguments ". We analyse these practices to determine if they truly provide an aid to decision-making. We tackle this issue thanks to a case-based inquiry, implemented in two, very different case-studies: the " red muds " of Gardanne, and the territorial public policies devoted to conserve and restore wetlands in France. These case...

  9. Environmental Modeling Packages for the MSTDCL TDP: Review and Recommendations (Trousses de Modelisation Environnementale Pour le PDT DCLTCM: Revue et Recommendations)

    Science.gov (United States)

    2009-09-01

    projet visait essentiellement l’intégration et l’affichage des données du sonar remorqué SQR-19, du sonar SQS-510, de bouées acoustiques et du...de la mise au point d’une capacité de prédiction du rendement de capteurs acoustiques sous-marins en temps quasi réel. Plus tôt, dans le cadre du...antérieurs menés par RDDC Atlantique. Résultats : Les capacités fournies par le système de modélisation acoustique GSR définissent une trousse de

  10. Environmental exposure to ionizing radiations and leukemia risk for children; Exposition environnementale aux rayonnements ionisants et risque de leucemie chez les enfants

    Energy Technology Data Exchange (ETDEWEB)

    Morin, A.; Backe, J.C. [CEA Fontenay aux Roses, Inst. de Protection et de Surete Nucleaire, DPHD/SEGR, 92 (France)

    2001-07-01

    In a first phase of the research, the measurement campaign has been done around nuclear sites. These evaluations have been made with the calculation codes F.O.C.O.N.96 1.0 and A.Q.U.A.R.E.J.2.5. for the adults, and the children of 1 5 and ten years old on a period of one year. In a second time, that is the doses estimation for the children that will be made for the others nuclear sites then on the relationship study between environmental exposure to ionizing radiations and the leukemia risk. (N.C.)

  11. The right to energy is a social, economical and environmental emergency; Le droit a l'energie est une urgence sociale, economique et environnementale

    Energy Technology Data Exchange (ETDEWEB)

    Coulon, Pierre-Jean

    2010-09-15

    2 billion people on the planet do not have access to energy. This energy deficiency has an impact on health, infant mortality, life expectancy, education, and women's emancipation and it slows development. Following the Copenhagen summit, in a financial crisis context that heavily impacted the world economies, energy issues demand real political commitment, because solutions exist. They include awareness-building, responsibility and commitment of society, because a better accessibility for the populations can't be achieve without the beneficiaries. [French] 2 milliards d'individus n'ont pas acces a l'energie sur la planete. Impact sur la sante, sur la mortalite infantile, sur l'esperance de vie, sur l'education, sur l'emancipation des femmes a cette situation de carence energetique est un frein au developpement. Au lendemain du Sommet de Copenhague, dans un contexte de crise financiere qui a impacte lourdement l'economie mondiale, les questions energetiques necessites une reelle volonte politique, car des solutions existent. Celles-ci passent notamment par la sensibilisation, la responsabilisation et l'implication de la societe civile, car permettre une meilleure accessibilite des populations ne peut pas se faire sans les beneficiaires eux-memes.

  12. Summary of the consequences for the environment of the Chernobyl accident; Synthese sur les consequences environnementales de l`accident de Tchernobyl

    Energy Technology Data Exchange (ETDEWEB)

    Ciffroy, P.

    1996-08-01

    The main conclusions on the environmental consequences of the Chernobyl accident in the former Soviet Union can be summarised as follows: the long term radioactive contamination of the environment can essentially be put down to Cs and Sr and, to a lesser degree, transuranic elements. In the short term, the radioactive iodine fall-out plays a fundamental role; in the countries of the former Soviet Union, it is estimated that 29,300 and 10,200 km{sup 2} of the surface area of the land are respectively contaminated by over 185 and 555 kBq.m{sup -2}. Approximately 1,064,000 people live in areas contaminated by more than 185 kBq.m{sup -2}; acute radioactive fall-out effects have occurred in the 30 km exclusion zone, essentially witnessed by the death of numerous conifers. On average, it will take about twenty years for half the Cs to disappear from the top 10 cm of soil; the level of contamination of food products varies greatly according to soil type. However, we can consider that milk, berries and mushrooms were the most critical foods in the years immediately following the accident and that some of the agricultural counter-measures taken have proved very useful in containing the contamination of food products. Because of the massive iodine leakage, the worst affected organ in the body during the months following the accident was the thyroid gland. In the months following the accident, the presence of radioactive elements on the surface of vegetables which were subsequently eaten proved to be the main source of human contamination; after a rapid fall off in external dose received by the population during the first year, it is now decreasing much more slowly. This phenomenon is mainly due to the very long-life of the radioactive caesium in the soil; approximately 90 % of the total internal dose for the 70 years following the accident have already been received by the local population. The external dose level will be reduced fairly slowly and we can assess that approximately 60 % of the amount of the external dose cumulated for the 70 years following the accident has already been ingested. (author). 2 refs.

  13. The agro-fuels farming: necessity of a global environmental evaluation; La culture d'agrocarburants: necessite d'une evaluation environnementale globale

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    In september 2004, the french government decided a development plan of the biofuels to reach 5,75% of biofuels in 2010. The importance of this decision, facing the concerned surfaces, prompts the Scientific Council of the Natural Property and the Biodiversity (CSPNB) to wonder on the possible impacts on the biodiversity, associated to the agriculture. Aware of the context of the climatic change, it shows that the biofuel plan has been decided without a global impact study. The CSPNB proposes a study. (A.L.B.)

  14. Chapitre 2. Biocarburant et montée des préoccupations environnementales : pluies acides, pollution atmosphérique et changement climatique

    OpenAIRE

    Scarwell, Helga-Jane

    2018-01-01

    L’observation et l’analyse rapide d’un certain nombre d’arguments récurrents relatifs au développement des biocarburants, posent toutefois la question de leur pertinence au regard des enjeux d’un développement durable et de leur capacité réelle à faire évoluer en profondeur les politiques publiques. A travers le prisme des biocarburants, petit chaînon d’une politique publique plus globale, nous percevons qu’il conviendrait d’élargir le débat afin de promouvoir une politique plus large prenant...

  15. La responsabilité globale des entreprises du service public marchand : vers un élargissement de la notion de responsabilité sociale et environnementale

    OpenAIRE

    Merlin-Brogniart, Céline; Depret, Marc-Hubert

    2016-01-01

    Dans le contexte actuel de crise à la fois financière, sociale et climatique, le développement durable obtient l’adhésion d’une majorité d’acteurs. Parmi ceux-ci, les entreprises ont progressivement pris conscience des externalités négatives induites par leurs activités, tant dans le domaine environnemental que dans le domaine social. Ce phénomène s’inscrit, plus largement, dans ce qu’on appelle la responsabilité sociale de l’entreprise (RSE) qui a donné lieu à une riche littérature tant en é...

  16. Summary of the environmental conditions that change the sound levels in wind turbines; Synthese des conditions environnementales modifiant les niveaux sonores de bruit des eoliennes

    Energy Technology Data Exchange (ETDEWEB)

    Vuillier, G. [Quebec Univ., Rimouski, PQ (Canada). CarFor division d' Audace Technologies; Chaumel, J.L.; Ilinca, A. [Quebec Univ., Rimouski, PQ (Canada). Laboratoire de Recherche en Energie Eolienne

    2009-03-15

    This paper discussed the challenge of solving noise problems associated with wind turbines. Wind power is the leading source of renewable energy in the world. According to the World Council on Energy, the total installed capacity for wind energy was 59,322 MW in 2006, and increased to 150,000 MW by 2010. Noise levels, and the preconceived ideas of noise levels produced by the turbines are among the key challenges facing municipalities. Various phenomena that have an influence on the propagation of noise levels were discussed in this paper, such as geometrical divergence, atmospheric absorption, the effect of soil, topography of the soil, and weather effects. Factors that influence the propagation of acoustic waves include changing weather, atmospheric pressure, and nuisances or obstacles. Road noise, bird noise and noise produced by ice on the blades were considered to be negligible. This paper demonstrated that acoustic levels at any one point can be determined by identifying all levels of noises and their characteristics using specialized tools. 12 refs.

  17. Economics of voluntarist approaches in environmental policies with non-perfect competition and cooperation; Economie des approches volontaires dans les politiques environnementales en concurrence et cooperation imparfaites

    Energy Technology Data Exchange (ETDEWEB)

    David, M

    2004-05-15

    Voluntarist approaches (VA) are a form of environmental regulation which has been recently developed and which allows companies to voluntarily commit themselves to improve their environmental efficiencies. This work integrates for the first time the role of market structures which prevail both on the polluting industries side and on the cleansing industries side in order to compare some VA with other environmental policy instruments. A VA inspired from a policy introduced in Denmark is compared first with a tax in the framework of an imperfect competition between polluting companies. The same form of VA is then compared to a tax, a pollution quota and a process standard when the cleansing is delegated to an imperfectly competitive industry. Finally, the study of a VA applied in France in the domain of domestic packing wastes allows to compare the theoretical point of view and the real situation. (J.S.)

  18. Radiation doses in the surrounding of patients undergoing a nuclear medicine exam; Dosimetrie environnementale des patients a la suite de leur examen d'imagerie medicale

    Energy Technology Data Exchange (ETDEWEB)

    Lemoine, J. [Faculte de Medecine de Grenoble (France); Bourre, J.C.; Giraud, J.Y. [Centre hospitalier universitaire - CHU de Grenoble (France)

    2011-07-01

    As patients leaving the department of nuclear medicine emit ionizing radiation, it is important to know if the dose received by the patient's entourage is dangerous, especially for those at risk such as pregnant women and young children. Some patients left the service immediately after their imaging; therefore, measurement of their radioactivity was carried out after they left the imaging room. I applied myself to measuring these patients in order to quantify this dose. I used a radiometer which continuously measured the radioactivity, which allowed me to see the difference between whether a patient was radioactive or not. All the relevant information for my article was listed in the database service. Therefore, I used these data to study the population and give meaning to the measured doses. The time between the injection and measurement varies from one examination to another, and the difference in time after the radioactive element used complicated the comparison of measured doses. So I mainly considered the doses in an absolute way rather than comparing them with each other. The measurements showed that no patient who left the service after imaging ever exceeded the limit of the service, which is 20 {mu}Sv/h, and could not give his entourage a dose reaching the mSv, the maximum dose for the public each year. I also measured the patients treated with iodine-131. It happened that a patient exceeded the limit of the service but the dose that the entourage received was below the limit of 1 mSv. (authors)

  19. Social perceptions and environmental practices of the French people from 1995 to 2011; Les perceptions sociales et pratiques environnementales des francais de 1995 a 2011

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-07-01

    In this collective publication, the authors discuss the always greater sensitivity of French people to environmental issues, discuss the French environmental practices with respect to that of other countries, outline that environmental practices are mostly constrained, comment the evolution from intention to practice in these matters, highlight that the standard of living is crucial for environmental practices, comment the behaviour changes with respect to energy in housing, discuss the importance of the price factor for the change of household environmental practices

  20. Actualization rate and environment policies: a review on the debate; Taux d'actualisation et politiques environnementales: un point sur le debat

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-07-01

    The aim of this report is to present the theoretical basis which underlies the actualization of future values of gains and losses associated with the degradation of the environment on a long term, and even on a very long term. After having recalled some elements related to the actualization rate, the report discusses how to determine the actualization rate parameters through a descriptive or prescriptive approach, and outlines the multiplicity of choices and the sensitivity to parameters. It discusses the impact of relative prices and which hypothesis on these relative prices is to be retained. It finally discusses how risks are to be taken into account

  1. The irradiation alterations in non radioactive materials: mineralogic and environmental implications; Les degats d irradiation dans les mineraux non radioactifs: implications mineralogiques et environnementales

    Energy Technology Data Exchange (ETDEWEB)

    Calas, G.; Allard, T.; Morin, G. [Institut de Mineralogie et de Physique des Milieux Condenses, Paris, (France); Balan, E. [IRD, Paris (France)

    2006-07-01

    This work presents an outlook of the results obtained on different types of defects in a wide series of minerals. The trapping of irradiation defects by substituted impurities will be illustrated by natural fluorines and apatites, allowing then to illustrate the use of these data to better know the thermal history of minerals or the role of the trace elements to stabilize these defects on geological period of times. Are also presented the native defects of clayey minerals, in relation to the natural irradiation of their alumino-silicated lattice, as in the case of kaolinite or montmorillonite. Here also, the presence of substituted impurities allows to explain the stability of these centers on geological period of times. (O.M.)

  2. Pleural malignant mesothelioma and non occupational exposure to asbestos in Casale Monferrato, Italy; Mesotheliome pleural malin et exposition environnementale l'amiante a Casale Monferrato, Italy

    Energy Technology Data Exchange (ETDEWEB)

    Magnani, C.; Terracini, B.; Ivaldi, C.; Botta, M.; Mancini, A.; Andrion, A.

    1998-03-01

    The objective is to study the possibility of the risk of a pleural malignant mesothelioma associated to an environmental exposure to asbestos coming from industry, by estimating the incidence of mesotheliomas in a population without professional exposure but living near a asbestos-cement factory.

  3. Durabilité de joints adhésifs silicone sous conditions environnementales sévères : application au packaging en électronique de puissance

    OpenAIRE

    Gros, Céline

    2006-01-01

    Des méthodologies d'étude de la durabilité de systèmes collés existent. Elles consistent à optimiser les assemblages avant vieillissement dans un premier temps de sorte à obtenir des propriétés optimales du collage suivi de l’étude de l'adhérence au cours du vieillissement. En vieillissement, les matériaux à assembler ont montré une résistance remarquable. Puis, nous avons étudié l'adhérence de ces systèmes par l’utilisation d’un test spécifique indiquant une diminution importante de l'adhére...

  4. La recherche sur la perception paysagère et la qualité environnementale en France = Research on landscape perception and environmental quality in France

    NARCIS (Netherlands)

    Nardon, N.; Berg, van den A.

    2001-01-01

    This reports contains the results of an exploration of research and expertise activities on the theme of landscape perception and quality in France. The research was carried out by a French agronomy engineer. The objectives of this research project were to inform French researchers about Alterra's

  5. De behandeling van loodintoxicaties

    NARCIS (Netherlands)

    Spaans E; Vries I de; Dijk A van; Savelkoul TJF; VIC

    1996-01-01

    Regelmatig worden het Nationaal Vergiftigingen Informatie Centrum van het Rijksinstituut voor Volksgezondheid en Milieu en de polikliniek Medische Toxicologie van het Academisch Ziekenhuis Utrecht geconfronteerd met vragen van artsen die te maken hebben met personen met een verhoogde

  6. Coarse-grained molecular dynamics simulation of transport through the nuclear pore complex

    NARCIS (Netherlands)

    Ghavami, Ali

    2014-01-01

    Dit proefschrift is gewijd aan het mechanisme van Nucleo - cytoplasmatisch transport openbaren door grofkorrelige moleculaire dynamica simulaties van ontvouwen eiwitten in de nucleaire porie complex (NPC) . NPC's zijn zeer selectief poorten, die alle transporten over nucleaire envelop controleren .

  7. The nuclear and the energy supply of tomorrow. Stop the useless quarrels about the nuclear; Le nucleaire et l'approvisionnement energetique de demain. Cesser les querelles inutiles a propos du nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    Following the paper of Hubert Reeves which developed the reasons of the the nuclear stopping, the author presents arguments to ease this opinion ( economic growth of the developing countries, greenhouse gases reduction, fossil fuels conservation, transportation sector) and proposes a cooperation between the nuclear and the renewable energies to satisfy a sustainable development. (A.L.B.)

  8. Recycling the spent nuclear fuel actinides: a major contribution to the sustainability of the 4. generation nuclear energy systems; Le recyclage des actinides presents dans les combustibles nucleaires uses: une contribution significative pour un nucleaire du 4. generation durable

    Energy Technology Data Exchange (ETDEWEB)

    Poinssot, Ch.; Warin, D. [CEA Valrho (DEN/MAR/DRCP/DIR), 30 - Marcoule (France)

    2009-08-15

    In line with the emerging objective of sustainable development, renaissance of nuclear energy requires optimizing current nuclear fuel cycles to recycle all the potentially energetic elements which are still present within the spent nuclear fuel after their first use in reactor. That concerns basically the actinides, first of all uranium and plutonium, but also the minor actinides, which represent the most significant part of the long term radiotoxicity of the nuclear waste to be disposed off deep underground. Current R and D aims to develop chemical processes based on liquid/liquid extraction using organic molecules presenting specific affinity for actinides. This paper aims to give an overview of the recent French results and the current developments which are performed within the framework of the French Waste Management Act from 28 June 2006. (authors)

  9. Nuclear systems of the future - generation 4. Proposals of strategic orientations for the nuclear systems of the future; Les systemes nucleaires du futur - generation 4. Propositions d'orientations strategiques pour les systemes nucleaires du futur

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    Several points, specific to France, must be taken into consideration for the long term strategic choice of future nuclear systems, in particular: taking the best profit of the progress potentialities of water reactors, optimizing the opportunities offered by the renewal of power plants in operation, integrating the consequences and the implementation of a strategy of optimized management of radioactive wastes, and looking for improvements that would make nuclear energy an active contributor to sustainable development. The prospective researches carried out by the CEA and its industrial partners have led to propose a R and D strategy with 3 complementary goals: search for innovations for water reactors, development of fast neutron reactors with closed fuel cycle (sodium fast reactor (SFR), gas fast reactor (GFR)), and development of key-technologies for nuclear hydrogen production (very high temperature reactor (VHTR)). The R and D effort concerns also the subcritical systems devoted to transmutation, the new cycle processes for a global management of actinides, and some other nuclear systems like the molten salt reactors (MSR) and the supercritical water reactors (SCWR). This paper presents the R and D strategy for each technology with its priorities, steps, financial means and collaborations. (J.S.)

  10. Energy, world should not chose nuclear energy to fight against climatic change. Nuclear and climatic change; Energie, le monde ne devrait pas opter pour le nucleaire pour lutter contre le rechauffement climatique. Nucleaire et changement climatique

    Energy Technology Data Exchange (ETDEWEB)

    Besson, S

    2007-06-15

    This document proposes an abstract of the conclusions of an expert group, the Oxford Research Group, which criticizes the today boost in favor of the electricity from nuclear energy. They explain that the nuclear energy should not be a solution for the fight against the climatic change. (A.L.B.)

  11. Best-of 2001: nuclear cardiology and cardiac MRI; Le best-of 2001: cardiologie nucleaire et IRM cardiaque

    Energy Technology Data Exchange (ETDEWEB)

    Manrique, A. [Centre Hospitalier Universitaire, 76 - Rouen (France); Marie, P.Y. [Centre Hospitalier Universitaire, 54 - Nancy (France)

    2001-12-01

    This year 2001 has been very rich in innovations and in works-in-progress in the field of cardiac imaging. In nuclear cardiology, this year has been mainly impressed by a large number of studies concerning 'gated SPECT' which allows the simultaneous analysis of the perfusion and of the contraction of the left ventricle. The clinical contribution of this technique is quite significant in any of the fields of use of the conventional tomo-scintigraphy such as the screening of the coronary disease, the evaluation of its prognosis or the evaluation of the viability. Innovation has also concerned the field of the radio-tracers, with studies concerning some very promising tracers of the apoptosis or of the cellular hypoxia. At last, various works have been carried out on the gamma-cameras, particularly to make them suitable for imaging of tracers used in positron emission tomography (PET). This should allow to spread to any of the nuclear medicine centers the use of FDG imaging which is the golden standard for myocardial viability assessment. About MRI, a lot of studies have been performed about sequences using gadolinium as a vascular contrast agent, to identify and to localize the infarction sequelae, even when limited to sub-endocardium. Probably the most dramatic technical innovations concerned the development of methods enhancing the recorded signal (SENSE) and the design of real-time imaging sequences, without apnea and without ECG gating. But, as every year, important advances have also been registered in angio-MR of the coronary vessels, as in the myocardial perfusion analysis using sequences without the requirement of contrast agent injection. (author)

  12. Physics for future Presidents - nuclear power, terrorism, global warming; La physique expliquee a notre futur president - Nucleaire, terrorisme, rechauffement climatique

    Energy Technology Data Exchange (ETDEWEB)

    Muller, Richard A.

    2011-04-26

    This book explains the science behind the concerns that our nation faces in the immediate future. It outlines the tools of terrorists, the dangers of nuclear power, and the reality of global warming. As citizens who will elect future presidents of the most powerful and influential countries in the world, we need to know-truly understand if Iran's nascent nuclear capability is a genuine threat to the West, if biochemical weapons are likely to be developed by terrorists, if there are viable alternatives to fossil fuels that should be nurtured and supported by the government, if nuclear power should be encouraged, and if global warming is actually happening. This book is written in everyday, nontechnical language on the science behind the concerns that our nations faces in the immediate future. This book is translated from 'Physics for Future Presidents: The Science Behind the Headlines', published by W. W. Norton and Company in August 2008. Contents: 1 - Terrorism: Nine-eleven, Terrorist nukes, The next terrorist attack, Biological terrorism; 2 - Energy: Key energy surprises, Solar Power, The end of oil; 3 - Nukes: Radioactivity and death, Radioactive decay, Nuclear weapons, Nuclear madness, Nuclear power, Nuclear waste, Controlled fusion; 4 - Space: Space and satellites, Gravity applications, Humans in space, Spying with invisible light; 5 - Global Warming: A brief history of climate, The greenhouse effect, A very likely cause, Evidence, Non-solutions, The fruit on the ground, New technologies

  13. The Iran nuclear ambitions and the international consequences; Les ambitions nucleaires de l'Iran et leurs consequences internationales

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-01-15

    This analysis of the Iran situation concerning the nuclear policy, is presented and discussed in three parts: the data and hypothesis of the iranian nuclear program, the regional strategy of Iran and evolution scenario and their consequences. (A.L.B.)

  14. An exercise of pluralistic expertise about the Limousin uranium mines - 'ACROnique du nucleaire' nr 84, March 2009

    International Nuclear Information System (INIS)

    Barbey, Pierre

    2009-03-01

    After having recalled the context of creation of a GEP (a pluralistic group of expertise) for the uranium mines located in the Limousin region, and indicated the first works performed by this group, the author more precisely defines what a GEP is. He proposes a brief overview of the history of uranium mines in France and outlines that it took a long time to take the associated risks into account. He discusses the issue of management of this after-mine period. He describes how the extraction products have been managed, i.e. transported or stored. He comments the works performed by the GEP-mines, its difficulties (budget and organisation), and the activities performed about different ancient mining sites

  15. Activities report for 1994-1995; Institut de Physique Nucleaire de Lyon - Rapport d`activite 1994-1995

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-12-31

    Here is the progress report for the Institute of Nuclear Physics of Lyon.We find physics at Lep, R and D for CMS at LHC( Higgs boson search in the L3 collaboration, quark b physics in Delphi at Lep 100,electromagnetic calorimetry for CMS-RD18 program, CMS experiment at LHC: MSGC development), hadronic and nuclear matter(heavy ions in CMS, multifragmentation threshold, spectroscopy of superdeformed nuclei with EUROGAM), astro-particles(gamma and neutron radioactive background measurements, bolometric measurement, scintillating crystal characterization for dark matter detection, the Virgo optics), ions/clusters-matter, physico-chemical transformation by ion-solid interaction are some examples of studies realized during these two years. (N.C.).

  16. The french nuclear industry is looking for an american partner; Le nucleaire francais cherche un allie americain

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    In the same time of the nuclear industry revival in USA by the President Bush, TOPCO the holding society which is going to group the main french nuclear society, is looking for an american partner. This report deals with the economic and political aspects of the situation. (A.L.B.)

  17. The nuclear energy policy challenges; Les defis de la politique en matiere d'energie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Hanne, H. [Ministere de l' Ecologie, de l' Industrie et de l' Emploi, Chef du Bureau Ameriques a la Dir. du Tresor et de la Politique Economique, 75 - Paris (France)

    2009-11-15

    At a time when the nuclear question mobilizes attentions and when a new cycle of debates about non-proliferation opens up, the author recalls the constraints and challenges of a nuclear power generation policy. After a brief history of the development of nuclear energy in France and in the rest of the world, the author presents the risks linked with this energy source (TMI and Chernobyl accidents), the particularities of the fuel cycle with its safety and security aspects, and the promises of some past and future reactor technologies (FBR's and fusion reactors). Then, the author stresses on the importance of investments in this domain as illustrated by the launching of new nuclear programs in France, UK, Italy, Finland and in the US, and by the willing of some emerging countries to develop this energy source (China, India, United Arab Emirates, Jordan..). Finally, nuclear energy must not be considered as a privilege of developed countries but should benefit to the rest of the world as well since it promotes economic development thanks to an abundant and cheap energy. (J.S.)

  18. Nuclear energy, energy of the future or bad solution?; Energie nucleaire, energie d'avenir ou fausse solution?

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-07-01

    The document presents the speeches of the debate on the nuclear energy solution for the future, presented during the meeting of the 6 may in Rennes, in the framework of the National Debate on the energies. The debate concerns the risks assessment and control, the solutions for the radioactive wastes, the foreign examples and the future of the nuclear energy. (A.L.B.)

  19. About some frequent objections on the civil nuclear; A propos de quelques objections frequentes sur le nucleaire civil

    Energy Technology Data Exchange (ETDEWEB)

    Manicore, J.M

    2002-06-01

    The author brings information on the advantages of the nuclear energy for the electric power production, in the context of the energy demand increase. He tries to identify the controversy subjects and opposes arguments in favor of the nuclear energy: environment, prices, energy recovery, wastes, safety, nuclear accidents. (A.L.B.)

  20. The nuclear wastes the democracy face to technological choices; Les dechets nucleaires la democratie face aux choix technologiques

    Energy Technology Data Exchange (ETDEWEB)

    Laet, J.P. de

    1996-01-01

    In every country concerned in radioactive waste management, the technicians thought they had possible solutions but they collided with a lack of understanding and came into conflict with public. What was demanded was a true policy control of scientific and technological choices as regard wastes. The decision to build a deep storage cannot be taken without a new law: the parliament will lean on a final report in 2006, which date a decision will be taken. Until this date, studies and research program are reviewed every year. (N.C.).

  1. Some aspects of nuclear graphite production in France; Etude generale sur les graphites nucleaires produits en France

    Energy Technology Data Exchange (ETDEWEB)

    Gueron, J.; Hering, H. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires; Legendre, A. [Pechiney, 75 - Paris (France)

    1958-07-01

    1) Manufacturing: A summary and results on the CEA-Pechiney purification process are given. Variations in the preparation of green pastes and their effects on graphitized material are described. 2) Physical and mechanical properties: Results are given on: - Statistics of dimensional variatior products having square cross-section. - Statistical variation of thermal expansion coefficients and of electrical conductivity. - Density of normals to carbon layer planes and their connexion with thermal expansion. - Stress-strain cycles and conclusions drawn therefrom. - Mechanical resistance and gas permeability of items for supporting fuel elements. 3) Behaviour under radiation: Alteration under radiation of French graphites irradiated either in G1 pile or in experimental piles, and thermal annealing of those alterations, are given. (author)Fren. [French] 1) Fabrication: On resume le procede d'epuration CEA-PECHINEY, ainsi que diverses modalites de preparation des pates et on expose les resultats obtenus. 2) Proprietes physiques et mecaniques: On indique le resultat d'etudes sur: - la statistique des dimensions de produits a section carree. - celle des variations des coefficients de dilatation thermique et de la conductibilite electrique. - la densite des normales aux plans graphitiques et leur connexion avec la dilatation thermique. - la compression mecanique du graphite. - la solidite mecanique et la permeabilite aux gaz de pieces destinees a supporter des cartouches de combustible. 3) Tenue sous rayonnement: Modification sous rayonnement des graphites fran is irradies soit dans la pile G1, soit dans des piles experimentales, et guerison thermique de ces modifications. (auteur)

  2. On the use of optical fibre sensors in nuclear environment; Utilisation des capteurs a fibre optique en environnement nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Brichard, B. [SCK-CEN - Studiecentrum voor Kernenergie - Centre d' Etude de l' Energie Nucleaire, Belgian Nuclear Research Center, Mol (Belgium)

    2010-03-15

    This paper aims to provide a new insight on the use of optical fibre sensors for nuclear applications. We report on the possibilities for radiation resistance improvement using hydrogenation techniques as well as on the behaviour of various sensors exposed to radiation such as the distributed temperature sensor based on Raman effect, high-temperature Bragg gratings and a gamma ray monitor using Cerenkov luminescence. A short discussion regarding the radiation resistance of photonic crystal fibres is also briefly presented. (author)

  3. Nuclear magnetic resonance common laboratory, quadrennial report; Laboratoire commun de resonance magnetique nucleaire, rapport quadriennal 1994-1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-12-31

    This quadrennial report of the nuclear magnetic resonance common laboratory gives an overview of the main activities. Among the different described activities, only one is interesting for the INIS database: it concerns the Solid NMR of cements used for radioactive wastes storage. In this case, the NMR is used to characterize the structure of the material and the composition, structure and kinetics of formation of the alteration layer which is formed at the surface of concrete during water leaching conditions. The NMR methodology is given. (O.M.)

  4. Progress report for 94/95; Institut des Sciences Nucleaires - Rapport d`activite 1994-1995

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-12-31

    We find here the progress report for the two years 1994 and 1995 for institute of nuclear sciences at Grenoble. In the field of quarks and leptons, three teams are invested in CERN programmes: A.T.L.A.S. near the L.H.C., D.E.L.P.H.I; the neutrino team has achieved the building of the detector in the M.U.N.U. collaboration. In the theme Hadrons physics we have G.R.A.A.L. at E.S.R.F., C.E.B.A.F. and W.A.89. Physicists are implied in the project E.L.F.E at D.E.S.Y. The study of superdeformed states go on with E.U.R.O.G.R.A.M. New techniques have been used near the programme S.A.R.A. The programme P.I.A.F.E. saw the resolution of the difficult problem of the transformation 1+ gives N+ ions of 30 KeV and their transport on long distances. The team of hybrid reactors have shown that it was possible to amplify energy by a sub critical accelerator-reactor hybrid system, experience initiated by C. Rubbia at C.E.R.N. (N.C.).

  5. Twelve reasons to refuse the nuclear in the MDP; Douze raisons pour refuser le nucleaire dans le MDP

    Energy Technology Data Exchange (ETDEWEB)

    Bonduelle, A

    2000-07-01

    The author presents twelve reasons which show that the nuclear energy has not a place in the MDP Mechanism of Clean Development: a main loophole for the developed countries, the doubtful ''additionality'' of the nuclear, the treaty ratification is more difficult with the nuclear, the domestic energy conservation is more efficient in Europe than the nuclear development, the nuclear white elephants facing the South debts, the technology transfers are doubtful, the developing countries and the sustainable development policies are evicted from the MDP, some options are more powerful in the South, the reactors and transport networks size are unsuited, the absence of democratic control, the nuclear proliferation, the nuclear safety and the wastes. (A.L.B.)

  6. The radioactive wastes management of the little nuclear industry; La gestion des dechets radioactifs du nucleaire diffus

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    Among the ANDRA customers, more than one million are little producers: hospital, research centers and industries. They are called little producers because of the low volume of produced wastes. Meanwhile these wastes management need an appropriate technology which is presented in this document. (A.L.B.)

  7. The Japanese nuclear sector shaken up again. Japanese press review - 'ACROnic du nucleaire' nr 81, June 2008

    International Nuclear Information System (INIS)

    2008-06-01

    After having briefly recalled the earthquake which occurred in July 2007 in the Niigata province, and also some other accidents which occurred in other power plants operated by TEPCO during the previous years, the author reports what were the consequences for Kashinawaki-Kariwa nuclear power station, and how these consequences have been reported by the press and managed by the Japanese operator TEPCO. He indicates the information published by the press after the accident and those given by TEPCO two days after. He describes the problems of organization on the fire brigade side, the fact that the fire risk had been underestimated by the operator. Radioactive leakages et releases have been discovered quite late, and could have been worse because of damages caused by the earthquake to some installations and if the stopped reactors had been operating. The author describes how the storage pools overflowed and how some installations were flooded by radioactive water. He outlines that TEPCO admitted very late that the reactor cores might have been damaged. He also outlines lacks in seismic studies, and notably the fact that TEPCO detected underwater cracks and estimated they were non active. Moreover seismograph recordings have been lost after the earthquake. The author reports the concerns of several scientists about the seismic risk for the region, and about safety margins of the whole Japanese nuclear fleet. He comments the consequences of the closure of the station in terms of lack of electricity supply. He finally notices that Japanese actors of the nuclear sector (industries, public authorities), despite these problems, decided to pursue the activity of a reprocessing plant, and the construction of new reactors

  8. International conference: nuclear power for the 21 st century; Conference internationale: L'energie nucleaire au 21. siecle

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    It is widely recognised that global energy demand will rise substantially during this century. The increased industrialization and urbanization of developing countries will produce large increases in energy demand in regions that currently have very low per capita energy use. This increasing demand for energy will need to be met in order to improve living standards for at least half of the world population and to reduce the economic imbalances between countries and regions. At the same time the use of fossil fuel based energy is identified as a major cause of environmental damage. The release of greenhouse gases from burning of fossil fuel in power stations and for transport is seen as a contributor to global warming. It is widely recognised that continued exploitation of fossil fuels and release of carbon dioxide will need to be controlled. After a prolonged period of slow development of nuclear power, confined to some countries in the world, it is now being recognised that nuclear energy has a potentially significant role to play in meeting the energy needs of the planet without damaging the environment. Developments in technology make the economics of nuclear power more attractive, and they may become even more so as fossil fuel prices continue to rise.or a widespread use of nuclear power, however, there remain concerns on the safety, security, waste and proliferation aspects. The global application of safety standards and appropriate security measures are required to ensure acceptable levels of protection. Effective control measures are required to ensure that non-proliferation commitments are honored. Handling nuclear waste safely and securely is achievable, but continues to remain as a public concern. The broad strategic objectives of the Conference are the following: to review the role of nuclear power and to define the potential benefits (energy security, sustainability and improved environmental protection) that expanding nuclear power offers to meet the increasing energy needs of the world; to facilitate a discussion on the issue of nuclear energy and society involving experts and decision makers. (author)

  9. Radioactive waste: the poisoned legacy of the nuclear industry; Dechets radioactifs: l'heritage empoisonne du nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Rousselet, Y. [Campagne Climat/Energie - Greenpeace (France)

    2011-02-15

    The nuclear industry produces a huge amount of radioactive waste from one end to the other of the nuclear cycle: i.e. from mining uranium to uranium enrichment through reactor operating, waste reprocessing and dismantling nuclear power plants. Nuclear power is now being 'sold' to political leaders and citizens as an effective way to deal with climate change and ensure security of energy supplies. Nonetheless, nuclear energy is not a viable solution and is thus a major obstacle to the development of clean energy for the future. In addition to safety and security issues, the nuclear industry is, above all, faced with the huge problem of how to deal with the waste it produces and for which it has no solution. This ought to put a brake on the nuclear industry, but instead, against all expectations, its development continues to gather pace. (author)

  10. Semi-classical theory of fluctuations in nuclear matter; Theorie semi-classique des fluctuations dans la matiere nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Benhassine, B. [Nantes Univ., 44 (France)

    1994-01-14

    At intermediate energies the heavy ion collisions can be studied within the framework of a semi-classical approach based on the Vlasov-Uehling-Uhlenbeck (VUU) equation. Such an approach reduces the N-body problem to its description in terms of the one-body distribution function and constitutes the basis of several successful simulation models. Our aim in this work is to extend these average approaches to treat fluctuations. Within the framework of a linear approximation, we derived a Fokker-Planck transport equation in the one-body phase space. When it is reduced to its first moments, one recovers the VUU equation for the average dynamics together with the time evolution equation for the correlations. The collective transport coefficients are then obtained by projection on the one-body collective space. Independently, using a projection method introduced by Van Kampen, based on the constants of motion, we deduce the stationary expressions for the covariance matrix in phase space. We extract then, the equilibrium dispersions of one-body observables in a homogeneous case and in a spherical symmetric one. These results are compared with two types of simulation models in a relaxation time approximation. In the first one which is of Lagrangian type, the collective transport coefficients are directly extracted from the simulation and consequently the numerical fluctuations are washed out. The second model, due to its Eulerian character, allows us to make a microscopical comparison. (author) 58 refs.

  11. Excitations in superfluid systems: contributions of the nuclear structure; Excitations dans les systemes superfluides: contributions de la structure nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Khan, E

    2005-12-15

    The author presents successively the theoretical aspect, the experimental aspect and the applied aspect of excitations in nuclear structures. The quasi-particle random phase approximation (QRPA) tool is first described. Recent approaches on QRPA are based on the theory of the density function where the ground state and excited states are described from the same nucleon-nucleon interaction. 2 methods for measuring the collective excitations are then presented: the proton scattering that has the potentiality to investigate the evolution of magicity, the second method is in fact a new method for measuring the giant mono-polar resonance (GMP) in exotic nuclei. Nuclear reactions are considered as a compulsory step on the way from observables like cross-sections to nuclear structure. The author highlights the assets of the convolution model that can generate the optical potential from the effective nucleon-nucleon interaction and from proton and neutron densities of the nuclei involved. R-processes in nucleosynthesis and neutron stars are reviewed as applications of collective excitations in the field of nuclear astrophysics. (A.C.)

  12. Cold-crucible fabrication of nuclear glasses; L'elaboration de verres nucleaires en creuset froid

    Energy Technology Data Exchange (ETDEWEB)

    Boen, R. [Division de l' energie nucleaire, CEA Centre de Valrho-Marcoule (France)

    2010-07-01

    Vitrification has stood the nuclear industry in good stead, for many years now, as a safe long-term conditioning technology for high-level waste. Major advances are nonetheless still being made, with the development of the cold-crucible technology, affording as it does new possibilities, in terms of volume reduction, and of extending the range of waste products amenable to incorporation. Indeed, by allowing higher melting temperatures to be achieved (1200 - 1400 C degrees), this process opens the way to a considerable increase in glass production capacities, and the fabrication of novel matrices, involving higher incorporation rates than current glasses. In the cold-crucible technology, materials put into the crucible are heated directly through induction. The crucible made of metal is cooled by water circulation. Where the glass comes into contact with the cold wall, a thin layer of solidified glass forms, with a thickness of 5-10 mm preventing the metal forming the crucible from coming into contact with the molten glass. A full scale pilot of the cold crucible was constructed at the La Hague vitrification workshop

  13. Can world answer the new nuclear necessity?; Le monde peut-il repondre a la nouvelle necessite du nucleaire?

    Energy Technology Data Exchange (ETDEWEB)

    Finon, D

    2003-09-01

    Thanks to climatic change policies and to the prospective studies about the depletion of oil and gas reserves, a new chance will be given to nuclear energy. However, even if the nuclear industry has become more transparent, more attentive to the public preoccupations, and permanently looking for a demonstration of its safety, the institutional bases of its re-start up (the participating decision processes and the competing framework of electric markets) are much less favourable than those of its initial technological development. The future of nuclear energy is not warranted except if a strong consensus happens in dominating countries about the real or assumed catastrophic consequences of the greenhouse effect and if this sudden awareness changes the public opinion about the specific risks of nuclear energy and radioactive wastes. The uncertainty which will remain during, at least, the next 15 years will greatly complicate the choices of the nuclear industry and of the governments. For this reason, a paradoxical effort has to be made for the promotion of energy efficiency and renewable energy sources. (J.S.)

  14. Has the nuclear energy a future?; L'energie nucleaire a-t-elle un avenir?

    Energy Technology Data Exchange (ETDEWEB)

    Nifenecker, H

    2005-07-01

    The author wonders on the nuclear energy opportunity for the future and concludes on the possibility of the nuclear park replacement after 2030 by breeder reactors. Such a choice will allow to face the energy demand in good economical and environmental conditions. The main problem seems to be the public opinion, not in favor of a nuclear energy. (A.L.B.)

  15. Activities report for 1993-1994; Centre de Recherches Nucleaires Strasbourg - Rapport d`activite 1993-1994

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-12-31

    The period of 1993 1994 has seen the first experiences of the Vivitron and the multi detector E.U.R.O.G.R.A.M.They concern study of properties of superdeformed nuclei. The CRN is invested on the way of an other priority project for the decade to come: the preparation of experience near the future L.H.C collider at C.E.R.N.. Different contributions to researches, developments for detectors are explained. (N.C.).

  16. France, Germany and the nuclear challenge; La France, l'Allemagne et l'enjeu nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Turkish, F

    2004-11-15

    Taking into account the french and german relations concerning the nuclear activities, the nuclear phaseout decided by the german government in 1998 presents inevitable impacts in France. The author discusses the constraints bound to this project (industrial interests, energy dependence...), the short dated phaseout project and the consequences for the relations of the two countries, Germany and France. (A.L.B.)

  17. Nuclear power plant of Fessenheim: evaluation of the seismic risk; Centrale Nucleaire de Fessenheim: appreciation du risque sismique

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    The seismic risk taken into account during the sizing of the nuclear power plant of Fessenheim seems to have been under evaluated at this time. The revaluation of the seismic risk, as proposed, until this day by EDF in order to the third ten-year visit of the power plant, planned for 2009, leads to a significant under evaluation of the risk and then is not acceptable. The present expertise details point by point the weaknesses of these revaluation. The power plant has been sized in an elastic manner that is generally strongly for the safety side. It is imperative to proceed the most quickly as possible to a deep control of the seismic resistance of the power plant of Fessenheim and then after having proceeded to a revision of the seismic risk in taking into account the actual knowledge in this field. (N.C.)

  18. Assessment of environment survey (2005-2009). Synthesis of results and comments - 'ACROnic du nucleaire' nr 91, December 2010

    International Nuclear Information System (INIS)

    2010-12-01

    This document presents and comments radioactivity level measurements performed by the Citizen Observatory of radioactivity in the environment which has been created by the ACRO (Association for the Control of Radioactivity in the West). As several nuclear installations are present in this part of France (power station, reprocessing plants, waste storage centre, military harbour), measurements have been made during five years (2005-2009) along the coasts of Normandy and in some waterways and lands. Several topics are addressed: marine environment (radioactivity measurements in species and algae), sediments on the coast (cobalt 60, americium-241, caesium-137), sea water (tritium activity), radiological status of brooks around La Hague (detection of 5 isotopes: cobalt 60, americium-241, caesium-137, iodine-129 and ruthenium-rhodium-106). A focus is made on tritium

  19. IAEA: 17 countries are candidates for nuclear energy; AIEA: 17 pays candidats a l'energie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2011-01-15

    In january 2011 IAEA announced that 17 countries had officially expressed their willingness to home nuclear power plants, they have filed applications for the construction of nuclear power plants. Among the countries concerned we find: Poland, Kuwait, Jordan, Morocco, Tunisia, Nigeria, Bangladesh, Thailand, Vietnam, Chile and Uruguay

  20. Modelling of heterogenous neutron leakages in a nuclear reactor; Modelisation des fuites heterogenes de neutrons dans un reacteur nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Wohleber, X

    1997-11-17

    The TIBERE Model is a neutron leakage method based on B{sub 1} heterogeneous transport equation resolution. In this work, we have studied the influence of the reflection mode at the boundary of the assembly. In particular the White boundary condition has been implemented in the APOLLO2 neutron transport code. We have compared the two TIBERE kinds of boundary conditions (specular and white) with the classical B{sub 1} homogeneous leakage method in the modelling of some reactors. We have remarked the better capability of the TIBERE Model to compute voided assemblies. The white boundary condition is also able to compute a completely voided assembly and, besides, wins a factor 10 in CPU time in comparison with the specular boundary condition. These two heterogenous leakage formalisms have been tested on a partially voided experiment and have shown that the TIBERE Model can compute this kind of situation with a greater precision than the classical B{sub 1} homogeneous leakage method, and with a shorter computational time. (author)

  1. Circumstances and consequences of Oural nuclear plant spoils; Circonstances et consequences des rejets des installations nucleaires de l`Oural

    Energy Technology Data Exchange (ETDEWEB)

    Nenot, J.C.

    1994-12-31

    The environment pollution frames serious long-dated problem. The civil nuclear power unhappily does not rest. The liquid waste fuel cycle plant prospective, particularly at their working beginning. 14 refs., 5 tabs.

  2. The nuclear industry: a new weapon for the Kremlin?; L'industrie nucleaire: nouvelle arme du Kremlin?

    Energy Technology Data Exchange (ETDEWEB)

    Du Castel, V.

    2010-07-01

    After having noticed the recent evolution of the Russian policy which tends to concentrate the economical and political power with a limited democratic pluralism, the author describes the re-structuring policy adopted for the energy sector, and notably the nuclear sector, in order to become a major international actor. First, she analyses the evolution of the hydrocarbon sector with a better management of tax incomes, and a stronger control of the industries of this sector based on a State capitalism development. She outlines that Russia now uses energy as a diplomatic arm, particularly in its relationship with the European Union. She states that Russia may want to follow the same kind of policy for nuclear energy as for the hydrocarbon sector by developing partnership with other countries, by regrouping the concerned activities within a single holding company (Atomenergoprom) and a federal agency (Rosatom). Russia increased its uranium production and became a powerful actor who challenges other international companies (Areva, Westinghouse, Toshiba). The author discusses the strategy defined by the Kremlin to reach supremacy in the nuclear sector

  3. Thermodynamical modeling of nuclear glasses: coexistence of amorphous phases; Modelisation thermodynamique des verres nucleaires: coexistence entre phases amorphes

    Energy Technology Data Exchange (ETDEWEB)

    Adjanor, G

    2007-11-15

    Investigating the stability of borosilicate glasses used in the nuclear industry with respect to phase separation requires to estimate the Gibbs free energies of the various phases appearing in the material. In simulation, using current computational resources, a direct state-sampling of a glassy system with respect to its ensemble statistics is not ergodic and the estimated ensemble averages are not reliable. Our approach consists in generating, at a given cooling rate, a series of quenches, or paths connecting states of the liquid to states of the glass, and then in taking into account the probability to generate the paths leading to the different glassy states in ensembles averages. In this way, we introduce a path ensemble formalism and calculate a Landau free energy associated to a glassy meta-basin. This method was validated by accurately mapping the free energy landscape of a 38-atom glassy cluster. We then applied this approach to the calculation of the Gibbs free energies of binary amorphous Lennard-Jones alloys, and checked the correlation between the observed tendencies to order or to phase separate and the computed Gibbs free energies. We finally computed the driving force to phase separation in a simplified three-oxide nuclear glass modeled by a Born-Mayer-Huggins potential that includes a three-body term, and we compared the estimated quantities to the available experimental data. (author)

  4. Influence of nuclear glasses composition on their liability to deterioration; Influence de la composition des verres nucleaires sur leur alterabilite

    Energy Technology Data Exchange (ETDEWEB)

    Tovena, I.

    1995-09-29

    This contributes to the study of the nuclear glasses composition influence on their liability to deterioration. The methodology of the experimental research used has lead to define between the thirty oxides which form the reference glass light water, six oxides of interest. For each of these oxides, a composition variation area has been defined. A matrix of twenty glass compositions has then been defined. The preparation of materials of these compositions has sometimes lead to materials weakly heterogeneous which have been characterized before deterioration. This study has been completed by those of three glasses in a composition variation area narrower of the light water nuclear glass : the R7T7 and two glasses at limits having respectively an initial dissolution velocity at 100 degrees Celsius theoretically maximum and minimum. Some deterioration parameters in pure water have been experimentally measured on the twenty three glasses : 1) an initial dissolution velocity at 100 degrees (Vo{sub 1}00) Celsius and another one at 90 degrees Celsius (Vo{sub 9}0) 2) a dissolution velocity in conditions near the saturation at 90 degrees Celsius 3) an apparent solubility of glass based on the ortho silicic acid activity 4) the evolution of the dissolution kinetics at 90 degrees Celsius in sub-saturated medium towards saturated medium 5) the alteration films nature developed at the glasses surface during these last alteration tests. Some thermodynamic and structural models have been studied in order to predict Vo{sub 9}0 and Vo{sub 1}00. The dissolution kinetic law developed from reference glass dissolution results has been studied with the calculation code LIXIVER. It has not been able to be used for most of the glasses compositions studied. As a consequence, the glasses dissolution control by a surface reaction which are itself controlled by the only dissolved silica is an hypothesis which is not verified for the greater part of the glasses. (O.L.). refs., figs., tabs.

  5. Nuclear Energy, a way for tomorrow spacecrafts; L'energie nucleaire, une voie pour les vaisseaux spatiaux de demain

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-07-01

    To better explore the solar system, the NASA will uses new propulsion modes, in particular the nuclear energy. These articles present the research programs in the domain and the particularities of the nuclear energy in the projects. (A.L.B.)

  6. New parameterizations of the Gogny effective nuclear interaction; Nouvelles parametrisations de l'interaction nucleaire effective de Gogny

    Energy Technology Data Exchange (ETDEWEB)

    Chappert, F

    2007-06-15

    The effective interaction between nucleons is the basic input to microscopic calculations in nuclear structure. One of the forms used since the 1970's is the phenomenological effective force proposed by D. Gogny. This force gives excellent results in nuclei at the mean-field approximation. The presence of contact terms does not allow, however, to use it for the description of beyond mean-field correlations present in nuclei. In this work, we investigate some extensions of the Gogny force, and especially a generalization in which the zero range density dependent term has been replaced by a finite range term. The parameters occurring in the analytical form of the force have been adjusted on symmetric infinite nuclear matter and neutron matter properties, and on some selected observables for stable nuclei, especially those related to pairing correlations. We present the method to include this kind of force in Hartree-Fock-Bogoliubov calculations and we analyze the results obtained for various nuclei. The new versions of the Gogny force allow us to reproduce nuclear structure properties with improved accuracy as compared to the former version. (author)

  7. MEDECINE NUCLEAIRE ET MALADIE CORONARIENNE : EVALUATION DE TRACEURS DE LA PERFUSION MYOCARDIQUE ET DE LA PLAQUE D'ATHEROME VULNERABLE

    OpenAIRE

    Broisat, Alexis

    2005-01-01

    CORONARY ARTERY DISEASE IS ONE OF THE PRIMARY CAUSE OF MORTALITY WORLDWIDE. NUCLEAR MEDICINE IS THE MAJOR IMAGING TECHNIQUE FOR DIAGNOSIS AND FOLLOWING OF THIS DISEASE. PERFUSION : NOWADAYS, MAJOR RADIOACTIVE AGENTS USED IN CLINICAL PRACTICE ARE MYOCARDIAL PERFUSION TRACERS. THE REFERENCE TRACER IS THALLIUM-201. HOWEVER, 201TL PRESENTS SOME DRAWBACKS. 99MTCN-NOET HAS BEEN PROPOSED FOR ITS REPLACEMENT. THIS STUDY SHOWS THAT IN CONTRAST WITH PREVIOUS STUDIES REALIZED IN VITRO ON CARDIOMYOCYTES,...

  8. The control of base nuclear facilities (I.N.B.); Le controle des installations nucleaires de base (INB)

    Energy Technology Data Exchange (ETDEWEB)

    Anon

    2009-02-15

    The Authority of Nuclear Safety ( A.S.N). presents in this column the current events of the control of the nuclear basic installations during august, september, october 2008, classified by nuclear site. This information is also available in real-time on the A.S.N. web site, www.asn.fr, in the column 'news'. We can consult all the notices of significant incident published as well as the following letters of inspection, the notices of information about the reactors shutdown, press releases and the A.S.N. information notes. (N.C.)

  9. Behaviour norms for nuclear energy peaceful uses; Code de bonne conduite pour les utilisations pacifiques de l`energie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Strohl, P. [Nuclear Energy Agency, 75 - Paris (France)

    1996-10-01

    After making a brief history on the nuclear law, the author shows that ethical aspects got involved in nuclear matters at three levels: security of nuclear supplies, radioactive waste management, and potential human failures. Then a list of ``good conduct norms`` which should be the link between law and ethics is given. They correspond to different issues of nuclear development: technological quality, radiation protection, radioactive waste management, public information, international cooperation, non-proliferation. (TEC).

  10. Some aspects of the algerian nuclear activities regulations; Quelques aspects de la reglementation algerienne des activites nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Cherf, A.

    1996-10-01

    This document explains the necessity of the creation of an atomic energy agency in Algeria. Its first role was to enhance nuclear activities, but in the same time to take care of radiological risks. But nowadays its main mission is to improve regulations in radiation protection with research and development studies and technical assistance. (TEC).

  11. IAEA and the international nuclear law development; L`A.I.E.A. et le developpement du droit nucleaire international

    Energy Technology Data Exchange (ETDEWEB)

    Jankowitsh, O. [International Atomic Energy Agency, Vienna (Austria)

    1996-10-01

    This paper summarizes the different objectives of the IAEA (International Atomic Energy Agency) as far as nuclear energy use is concerned. It presents the status of the organization, its action int the non-proliferation treaty, and its work on the safeguard regulations. These measures have been taken during the Convention on nuclear safety in 1994. This convention concerns nuclear power plants as well as storage of radioactive wastes. (TEC).

  12. Nuclear civil liability international system. Evolution prospects.; Le regime international de responsabilite civile nucleaire. Perspectives d`evolution

    Energy Technology Data Exchange (ETDEWEB)

    Reyners, P. [Nuclear Energy Agency, 75 - Paris (France)

    1996-10-01

    This paper sets out the necessity of a special system of international conventions in the scope of nuclear civil liability. Then the main principles of the conventions in Paris and Vienna are described. Recently, works have been carried out in order to improve and modernize the civil liability system. (TEC). 4 tabs.

  13. Medical surveillance of outside workers in base nuclear facilities; Surveillance medicale des travailleurs exterieurs dans les installations nucleaires de base

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    1997-06-01

    Here are described two bylaws relative to the training of doctors in charge of the radiation protection of outside enterprises workers and susceptible to intervene in nuclear facilities, and to the entitlement clauses of medical services in charge to make the medical surveillance of outside enterprises workers intervening in nuclear facilities. (N.C.).

  14. Propagation of neutrinos in nuclear matter; Effets du milieu sur la propagation des neutrinos dans la matiere nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Margueron, J

    2001-07-01

    We study the elementary interactions between neutrinos and dense matter in a proto-neutron star. Equations of state obtained with different nuclear effective interactions (Skyrme, Gogny, Relativistic Lagrangians) are first discussed. Then, we characterize their stability in spin and isospin. We derive magnetic susceptibilities for all isospin asymmetry values as a function of Landau parameters G{sup {pi}}{sup {pi}}{sup '}{sub 0} (where {pi}, {pi}' = proton or neutron). From this work, we select a parametrization for each of the 3 effective forces: Sly230b,D1P,NL3. We calculate the pure neutron matter and asymmetric nuclear matter response functions with and without charge exchange, describing nuclear correlations in both approaches: non-relativistic (Hartree-Fock with Skyrme forces, then complete RPA) and relativistic (in the Hartree approximation). At the end, we calculate neutrino mean free paths neutral current and charged current reactions. Comparisons between relativistic and non-relativistic approaches allow us to identify relativistic effects in nuclear matter at densities as low as twice the saturation density. RPA correlations make the medium more transparent to neutrinos compared to free Fermi gas. The importance of the effective mass in mean free path calculations is also shown. (author)

  15. The Iranian nuclear programme-an equation with many unknowns; Le programme nucleaire iranien, une equation aux multiple inconnues

    Energy Technology Data Exchange (ETDEWEB)

    Hamel, T. [Universite Robert Schuman, 67 - Strasbourg (France)

    2007-07-15

    So, is Iran a threat or a victim? Although it has no previous history of aggression, Iran continues to disturb the international community with its nuclear programme, while declaring that it is under threat from its neighbours and the victim of propaganda. Yet why does a country with such large reserves of oil and gas need a nuclear industry? This question arose as long ago as the early 1970, and it arises again today. The Shah was a Gaullist, Khomenei a Gaullist ayatollah, and today it is not the Ayatollah but the Gaullist posture that is the more disturbing. A Blairite ayatollah will surely suit Washington nicely. (author)

  16. Those nuclear wastes nobody knows what to do with; Ces dechets nucleaires dont on ne sait que faire

    Energy Technology Data Exchange (ETDEWEB)

    Boilley, D

    1998-01-01

    The important use of nuclear energy in Europe, and in particular in France, has a beneficial impact on the air quality but raises important problems of radioactive waste management. The technical problems encountered by the French government with the dismantling of Superphenix reactor are a good example. Moreover, despite its reassuring talks, the electronuclear industry lobby, particularly powerful, has never been able to propose any satisfactory solution for the elimination of radioactive wastes. This article makes a criticism of the lack of visibility and democratic debate in France about the sensible subject of nuclear waste management. A comparison with the situation in other countries is made. (J.S.)

  17. Inspection of nuclear pressure equipment: principles, issues and perspectives; Le controle des equipements sous pression nucleaires: principes, enjeux et perspectives

    Energy Technology Data Exchange (ETDEWEB)

    Limousin, S. [Autorite de Surete Nucleaire (ASN), Dir. des Equipements sous Pression Nucleaires, 75 - Paris (France)

    2010-02-15

    French regulations about nuclear pressure equipment (like steam generators and the reactor pressure vessel) take into account hazards due to the energy contained in the equipment but also add specific requirements due for instance to the radioactivity or safety for instance. ASN is in charge of the conformity assessment of the most important equipment and monitors the licensee who is responsible of in service inspection and maintenance. Because of the internationalization of nuclear component manufacturing, and consequently new comers in this area, a careful monitoring of subcontractors is needed. The major anomalies detected in steam generator over the past few years showed the necessity of being careful and humble towards degradation mechanisms. Nuclear pressure equipment regulations enables ASN to perform an efficient oversight of licensees and component manufacturer in a context of international manufacturing and licence renewal. (author)

  18. Remote-operated systems for interventions in civil nuclear facilities; Systemes teleoperes pour interventions dans les installations nucleaires civiles

    Energy Technology Data Exchange (ETDEWEB)

    Bonneville, A. [Groupe INTRA, 37 - Avoine (France)

    1999-10-01

    This short paper is a presentation of the aerial and terrestrial means developed by the Intra Group specialized in interventions in the case of nuclear accidents and incidents. The aerial means consist in a airborne system called Helinuc and which can perform spectro-gamma measurements over surfaces of about 15 km{sup 2} using an `Ecureuil`-type helicopter. The terrestrial means comprise different types of robots for surveys, sampling, manipulation, various works etc.. and remote-controlled caterpillar tractors, shovels and dumper trucks. (J.S.)

  19. Nuclear cardiology in Senegal: a luxury or a need?; Cardiologie nucleaire au Senegal: un luxe ou une necessite

    Energy Technology Data Exchange (ETDEWEB)

    Mbodj, M.; Seck Gassama, S.; Ndong, B.; Ndoye, O.; Toure Sow, H.; Senghor, S.R. [Universite Cheikh Anta Diop, Lab. Biophysique et Service de Medecine Nucleaire, Faculte de Medecine, de Pharmacie et d' Odontostomatologie, Dakar (UCAD) (Senegal); Diop, S.N. [Centre Antidiabetique Marc Sankale, Hopital Abass Ndao, Dakar (Senegal); Solanki, K.K. [International Atomic Energy Agency, Dept. de la Cooperation Technique, Section Medecine Nucleaire, Vienna (Austria)

    2006-06-15

    Aim: to sensitize at the same time experts and public authorities on the interest of the establishment of nuclear cardiology in Senegal. Material and method: the radioimmunoassay of micro-albuminuria, early marker of cardiovascular morbid-mortality was carried out in the nuclear medicine department of Dakar on a population of 100 diabetic patients (74 of type 1 and 26 of type 2) presenting one or more traditional cardiovascular risk factors. Out of these patients, 39% had abnormal rest ECG, asymptomatic in half of the cases. Results: prevalence of micro-albuminuria is high (24%). There is no significant difference in distribution between type I and type 2. Micro-albuminuria > 30 mg/24 h exists in 16,3% of patients with lipid abnormalities (ratio: total cholesterol/HDL cholesterol > 5), 30% of obese, 75% of hypertensive patients and 43,6% of patients with abnormal rest ECG, who would benefit from myocardial perfusion imaging (MPI): about 17% of patients involved in this study. No or weak correlation is found between micro-albuminuria and traditional risk factors. Conclusion: From these results and available epidemiological data in 2005, the estimate of the requirements in nuclear cardiology for the Senegalese diabetic population, indicates that 3740 patients should have benefited that year from it. Considering that this figure underestimates the real needs, taking into account the needs brought back to a population of 10 million inhabitants and the expect expansion of the diabetic disease, it appears justified to include the nuclear cardiology in the national programmes of prevention of the public health in Senegal. (author)

  20. Nuclear dismantling and asbestos elimination: the same challenge?; Demantelement nucleaire et elimination d'asbeste: un meme challenge?

    Energy Technology Data Exchange (ETDEWEB)

    Dadoumont, J.; Deboodt, P. [Centre d' Etude de l' Energie Nucleaire, Mol (Belgium)

    1998-07-01

    The ALARA principle constitutes a powerful tool for workers dosimetry management in the nuclear field. A consequence of the application of this principle could be an accentuation of the nuclear risk face to the industrial risk. Using works of asbestos elimination in nuclear medium, the present article examines how a generalization of the utilization of the ALARA principle is conceivable and how the existing obstacles could be removed. (N.C.)

  1. 15 years after Chernobyl. Nuclear plus greenhouse effect?; 15 ans apres Tchernobyl. Nucleaire plus effet de serre?

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, M. [Wise-Paris, 75 (France); Rosen, M. [International Atomic Energy Agency (IAEA), Vienna (Austria)

    2001-04-15

    Today, the argument in favour of nuclear energy is not an economical one nor linked to energy resources but is at the level of climatic change. Nuclear energy is seen as the only energy source without carbon dioxide emissions. A more detailed analysis of greenhouse gases on the life cycle shows that nuclear energy gives as greenhouse gases as big hydroelectric power plants or wind power plants, these emissions are more important than for biogas installations with cogeneration. The strategy of energy efficiency is certainly more competitive than the new reactors in other terms it is more efficiency to reduce the consumption than to increase the nuclear production. (N.C.)

  2. Facing the climatic threat, the nuclear illusion; Face a la menace climatique, l'illusion du nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    In the framework of the energy problem, the network Action Climate brings many propositions to explain that the nuclear is not a solution to the global warming. A boost to the nuclear will be done to the detriment of cheaper, safer and more adapted policies, as the energy conservation and efficiency, the energy production decentralization and the renewable energies development. The three parts shows how the nuclear cannot answer to the climatic problem, the nuclear refutes the Rio declaration on the environment and the sustainable development, the nuclear is a french specificity which damages the national policy against the climatic change. (A.L.B.)

  3. Medical intervention in case of nuclear or radiation event; Intervention medicale en cas d'evenement nucleaire ou radiologique

    Energy Technology Data Exchange (ETDEWEB)

    Blanc, J.; Bourguignon, M.; Carli, P.; Carosella, E.; Challeton de Vathaire, C.; Court, L.; Ducousso, R.; Facon, A.; Fleutot, J.B.; Goldstein, P.; Gourmelon, P.; Herbelet, G.; Kolodie, H.; Lallemand, J.; Martin, J.C.; Menthonnex, P.; Masse, R.; Origny, S.; Pasnon, J.; Peton Klein, D.; Rougy, C.; Schoulz, D.; Romet, G.; Telion, C.; Vrousos, C

    2002-07-01

    This guide aims to be a practical tool for intervenors in case of nuclear or radiation accident. It proposes many sheets to favor the reactivity and the implementing of adapted measures. It concerns the course of action to take in case of irradiation accident or contamination and the reception in medical structure or a hospital. (A.L.B.)

  4. Exotic nuclei: another aspect of nuclear structure; Les noyaux exotiques: un autre regard sur la structure nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Dobaczewski, J. [Warsaw Univ., Institute of Theoretical Physics (Poland); Blumenfeld, Y.; Flocard, H.; Garcia Borge, M.J.; Nowacki, F.; Rombouts, S.; Theisen, Ch.; Marques, F.M.; Lacroix, D.; Dessagne, P.; Gaeggeler, H

    2002-07-01

    This document gathers the lectures made at the Joliot Curie international summer school in 2002 whose theme that year was exotic nuclei. There were 11 contributions whose titles are: 1) interactions, symmetry breaking and effective fields from quarks to nuclei; 2) status and perspectives for the study of exotic nuclei: experimental aspects; 3) the pairing interaction and the N = Z nuclei; 4) borders of stability region and exotic decays; 5) shell structure of nuclei: from stability to decay; 6) variational approach of system with a few nucleons; 7) from heavy to super-heavy nuclei; 8) halos, molecules and multi-neutrons; 9) macroscopic approaches for fusion reactions; 10) beta decay: a tool for spectroscopy; 11) the gas phase chemistry of super-heavy elements.

  5. The bomb black market - Inquiry about nuclear proliferation; Le marche noir de la bombe - Enquete sur la proliferation nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Tertrais, B

    2009-07-01

    Nuclear weapons remain for a long time in the hands of the five big powers: USA, Soviet Union, Great Britain, France and China. Things started to change when Israel, and then India acquired the atomic bomb as well. Pakistan took up the race too but Abdul Qadeer Khan, one of the nuclear program maker of the country, took profit of the situation to set up a huge international proliferation network for the spreading of the technologies, tools and materials necessary for weapons fabrication. He offered his services not only to Iran and North Korea, but to Iraq and Libya as well and probably to some other countries. Today, the Iranian nuclear program generates both envy and fear in the Middle East. Who is going to be the next domino of the nuclear game? Egypt, Saudi Arabia, Algeria and Turkey are potential candidates. But while Pakistan sinks into crisis, the terrorists are taking interest in nukes. The author of this book has worked for more than 10 years on this dossier. He has had access to the most sensible documents and to essential testimonies. He now lifts the curtain on the secrets of nuclear proliferation. In this book, where reality sometimes surpasses fiction, he explains how the CIA finally succeeded in infiltrating the 'Khan ring' after having closed its eyes on his deals for a long time. He describes the branches of the Pakistani atomic complex and analyses with lucidity the nuclear terrorism risk.

  6. Desalination of seawater: a nuclear solution; Dessalement de l'eau de mer: la solution nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Basta, H

    2003-04-01

    1,4 milliard human beings do not benefit of sufficient clean water supply. The desalting of seawater is a valid and tested solution in terms of technology but the 2 physical processes involved, evaporation and reverse osmosis are energy-greedy. Only rich countries like Kuwait or Saudi-Arabia can afford producing massive volumes of fresh water from seawater. Today the total world capacity of desalting reaches 30 milliard m{sup 3} a day with 10.000 operating units, half of which installed in middle-east countries. The use of nuclear energy is a solution to lower costs. In Aktau (Kazakhstan) a BN-350 fast reactor has been producing a 135 MW electrical output and 80.000 m{sup 3} of fresh water a day for 27 years. In Japan about 10 desalting units have been coupled to nuclear power plants. A company (Eskom) based in South-Africa is developing a new concept of high temperature reactor: the PBMR (pebble bed modular reactor). The suitability of this reactor has been assessed for desalting and it appears that its main assets are its size: 165 MW electrical output (400 MW thermal output) and its Brayton cycle. Other characteristics such as the coolant (helium), the type of fuel (8% enriched uranium encapsulated in carbon), the low design and maintenance costs, the short building time (2 years) are important when considering issues like nuclear safety, non-proliferation and profitability. (A.C.)

  7. Desalination of seawater with nuclear reactors; Le dessalement de l'eau de mer pour les reacteurs nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Nisan, S.; Volpi, L. [CEA Cadarache, Dir. du Developpement et de l' Innovation Nucleares-DDIN, 13 - Saint-Paul-lez-Durance (France)

    2001-12-01

    About 40 % of the world population is concerned with water scarcity. This article reviews the different techniques of desalination: distillation (MED and MSF), reverse osmosis (RO), and electrodialysis (ED). The use of nuclear energy rests on several arguments: 1) it is economically efficient compared to fossil energy; 2) nuclear reactors provide heat covering a broad range of temperature, which allows the implementation of all the desalination techniques; 3) the heat normally lost at the heat sink could be used for desalination; and 4) nuclear is respectful of the environment. The feedback experience concerning nuclear desalination is estimated to about 100 reactor-years, it is sufficient to allow the understanding of all the physical and technological processes involved. In Japan, 8 PWR-type reactors are coupled to MED, MSF, and RO desalination techniques, the water produced is used locally mainly for feeding steam generators. (A.C.)

  8. Automatic classification process and device for nuclear fuel pellets; Procede et dispositif de tri automatique de pastilles de combustible nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Bernardin, M.; Bouvet, P.; Wache, C.

    1994-07-01

    The device arranges the fuel pellets in several parallel files. The end pellet of each file are then removed and aligned. These pellets are then simultaneously transferred on an optical inspection arrangement and are turned simultaneously for examination. The light signal is analysed to determine if each pellet is correct, acceptable or reject. The pellets are then held by individual grabs which displace to a separation system where the individual grabs are controlled to open in response to the result of the signal analysis. 13 figs.

  9. Status of safety at Areva group facilities. 2006 annual report; Etat de surete des installations nucleaires. Rapport annuel 2006

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-07-01

    This report presents a snapshot of nuclear safety and radiation protection conditions in the AREVA group's nuclear installations in France and abroad, as well as of radiation protection aspects in service activities, as identified over the course of the annual inspections and analyses program carried out by the General Inspectorate in 2006. This report is presented to the AREVA Supervisory Board, communicated to the labor representation bodies concerned, and made public. In light of the inspections, appraisals and coordination missions it has performed, the General Inspectorate considers that the nuclear safety level of the AREVA group's nuclear installations is satisfactory. It particularly noted positive changes on numerous sites and efforts in the field of continuous improvement that have helped to strengthen nuclear safety. This has been possible through the full involvement of management teams, an improvement effort initiated by upper management, actions to increase personnel awareness of nuclear safety culture, and supervisors' heightened presence around operators. However, the occurrence of certain events in facilities has led us to question the nuclear safety repercussions that the changes to activities or organization on some sites have had. In these times of change, drifts in nuclear safety culture have been identified. The General Inspectorate considers that a preliminary analysis of the human and organizational factors of these changes, sized to match the impact the change has on nuclear safety, should be made to ensure that a guaranteed level of nuclear safety is maintained (allowance for changes to references, availability of the necessary skills, resources of the operating and support structures, etc.). Preparations should also be made to monitor the changes and spot any telltale signs of drift in the application phase. Managers should be extra vigilant and the occurrence of any drift should be systematically dealt with ahead of implementing corrective actions. The level 2 INES event that occurred in the ATPu facility in Cadarache was therefore considered particularly significant by the General Inspectorate. The activities being carried out within the entity at the time of the event were singular and the identified causes numerous, but were fundamentally the product of human and organizational factors. The lessons learnt from this event need to be shared with all other entities. Like many other less significant events that took place in 2005 and 2006, this event led the General Inspectorate to focus particularly on criticality risk control on sites where fissile material is used. It considers that internal criticality control actions must be carried out on these sites in order to make sure the required provisions are known and applied by all operators. In-service fire risk control hinges on - among other things - the application of fire prevention, protection and preparation rules, which must be a constant concern of site managers. The General Inspectorate noted numerous positive developments on most sites in this field in 2006, as well as the production entities' full cooperation with the risk analysis services and fire-fighting services. On most sites, fire risk control is organized clearly and in a structured manner.

  10. Status of safety at Areva group facilities. 2007 annual report; Areva, etat de surete des installations nucleaires. Rapport annuel 2007

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    This report describes the status of nuclear safety and radiation protection in the facilities of the AREVA group and gives information on radiation protection in the service operations, as observed through the inspection programs and analyses carried out by the General Inspectorate in 2007. Having been submitted to the group's Supervisory Board, this report is sent to the bodies representing the personnel. Content: 1 - A look back at 2007 by the AREVA General Inspector: Visible progress in 2007, Implementation of the Nuclear Safety Charter, Notable events; 2 - Status of nuclear safety and radiation protection in the nuclear facilities and service operations: Personnel radiation protection, Event tracking, Service operations, Criticality control, Radioactive waste and effluent management; 3 - Performance improvement actions; 4 - Description of the General Inspectorate; 5 - Glossary.

  11. The struggle of the veterans of the French nuclear tests; La lutte des veterans des essais nucleaires francais

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    The question debated in this article concerns the demand of compensation and recognition of the impact on their health of nuclear tests. The military personnel that worked during nuclear tests in French Polynesia and the Sahara sites, but also the inhabitants of the atolls of Moruroa and Fangataufa equally in French Polynesia. An observatory of the veterans health has been created in order to improve the medical management of military personnel and former military personnel. An association 'Moruroa e tatou' contains the Polynesian former workers of the Nuclear tests of the Pacific and the association A.V.E.N. contains the veterans of nuclear tests. numerous examples are detailed. The question is tackled too for the consequences on health of the British nuclear tests, in Australia, Christmas Islands, and New Zealand. (N.C.)

  12. The myeloid splenomegaly in a service of nuclear medicine; La splenomegalie myeloide dans un service de Medecine Nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Rain, J-D.; Najean, Y.; Billoty, C. [Service de Medecine Nucleaire, Hopital Saint-Louis, Paris (France)

    1997-12-31

    The existence in a Nuclear Medicine service of several in-vivo (scintigraphy and kinetic) and in-vitro (dosages) sections can contribute into a better knowledge of diseases due to the complementarity of the provided information. Exploration, since 1990, of 183 primary and secondary myeloid splenomegalies (MS) is a good example. These 183 patients have had a medullary scintigraphy with Technetium colloids and Indium Transferrin, 98, a measurement of the sanguine mass, 60, a kinetic study of Iron-Chromium erythropoiesis and 180, a dosage of pro-collagen III. These four examinations allowed confirming the MS diagnosis and orienting the prognostic. The medullary scintigraphy is able to show the poverty of marrow-sustaining tissues and allows measuring the splenomegaly. It helps evaluating the wealth of myelopoietic tissue and its extensions and confirming the spleenic erythropoiesis. The measure of sanguine mass specifies the existence and importance of true anaemia and hemodilution due to the splenomegaly. The kinetic study by Iron-Chromium indicates the medullary spleenic production, degree of dys-erythropoiesis, the presence of hemolysis and its location. It brings about important prognostic arguments and is a precious aid in making the difficult decision of indication of splenectomy. The pro-collagen III dosage is of a certain prognostic interest. The patients with less than 0.70 U/ml have a slow evolutivity of their disease, those with values within 0.70 to 1 U/ml have a more severe evolution, while for those having values higher than 1 U/ml the prognostic is bad on short terms. In conclusion, the diagnosis and prognostic of these examinations in MS justify maintenance of a plurality of in-vivo and in-vitro techniques in our services

  13. The behaviour of some polyatomic gases in nuclear reactors; Le comportement de quelques gaz polyatomiques dans les reacteurs nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Dolle, L. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1958-07-01

    The chemical effect of ionizing radiations on a certain number of gaseous systems is described. Under the influence of radiations from a reactor, NH{sub 3}, is decomposed to nitrogen and hydrogen in stoichiometric proportions. Formation of N{sub 2}H{sub 3}, particularly could not be detected. Under a slow neutron flux the reaction {sup 14}N (n, p) {sup 14}C constitutes the main source of decomposition energy. Direct recombination of H, and N, has been brought about under the influence of radiation. The radiolysis of NH{sub 3}, occurs by a complex mechanism; and the kinetics follow a law of the order of about 2.5 which increases with the decomposition rate. The decomposition of hydrogen sulphide is appreciably faster than that of NH{sub 3}. Hydrogen is the only gaseous product of the reaction. The sulphur, which is deposited on the walls of the ampoules, is clearly visible to the naked eye. Up to the present decompositions up to 84 per cent have been obtained. The influence of the reaction {sup 32}S (n, p) {sup 32}P is considered. Radiochemical decomposition of nitrous oxide N{sub 2}O takes place with high yields. The reaction is complicated from the beginning by the formation of higher oxides of nitrogen which we identify and measure. Radiochemical decomposition of methane gives quantities of higher hydrocarbons. Certain of these gaseous systems could find applications in the measurement of high doses of radiation. This problem is discussed in the conclusion. (author)Fren. [French] L'effet chimique des rayonnements ionisants sur un certain nombre de systemes gazeux est decrit. Sous l'influence des rayonnements d'un reacteur, NH{sub 3} se decompose en azote et hydrogene en proportions stoechiometriques. En particulier aucune formation de N{sub 2}H{sub 4}, n'a pu etre detectee. Sous flux de neutrons lents, la reaction {sup 14}N (n, p){sup 14}C constitue la principale source d'energie de decomposition. La recombinaison directe de H{sub 2} et N{sub 2} a ete realisous l'influence des radiations. La radiolyse de NH{sub 3}, procede par un mecanisme complexe, et la cinetique obeit a une loi d'ordre 2,5 environ qui augmente avec le taux de decomposition. La decomposition de l'hydrogene sulfure est notablement plus rapide que celle de NH{sub 3}. Le seul produit gazeux de la reaction est l'hydrogene. Le soufre, qui se depose sur les parois des ampoules, est nettement perceptible a l'oeil. On a obtenu jusqu'ici des decompositions allant jusqu'a 84 pour cent. L'influence de la reaction {sup 32}S (n, p) {sup 32}P est consideree. La decomposition radiochimique du protoxyde d'azote N{sub 2}O se fait avec des rendements eleves. La reaction est compliquee des ses debuts par la formation d'oxydes superieurs de l'azote que nous identifions et mesurons. Le methane donne par decomposition radiochimique des quantites d'hydrocarbures superieurs. Certains de ces systemes gazeux pourraient trouver des applications dans la mesure de fortes doses de rayonnement. Ce probleme est discute en conclusion. (auteur)

  14. The economical impact and the environmental efficiency of the ISO 14001/EMAS certification of industrial companies; L'impact economique et l'efficacite environnementale de la certification ISO 14001/EMAS des entreprises industrielles

    Energy Technology Data Exchange (ETDEWEB)

    Backer, P. de

    1999-07-01

    The 1836/93 EMAS is the European regulation on environmental management and auditing scheme. Its aim is to answer the precise requirements of a standard for the management of the environmental impacts of industrial activities. The ISO 14001 standard defines the requirements of an environmental management policy at the international scale. The aim of this study is to make a statement of the enforcement of the ISO 14001 and EMAS environmental management systems in France in terms of results and with respect to the help provided by public authorities. The following aspects are analyzed successively: the aim of the study (context, global goal, hypotheses, cost-benefit analysis, qualitative appraisal); the methodological aspects (selection of sites, sectoral distribution, geographical, legal and financial aspects, data collection, analysis and synthesis); the motivation of companies (sectoral analysis, business aspects, reduction of operation costs, personnel motivation); the objectives of the environmental management system (conformability analysis, environmental goals, effluents, soil pollution, energy and water conservation, wastes, consumption of raw materials, noise and other pollutants); economical aspects (cost, personnel training, audits, benefits, minimization of environmental impacts, reduction of energy, water and materials consumption); cost-benefit evaluation; environmental efficiency of the environmental management system; attitude of other companies; comparison with other European countries; synthesis and proposals. (J.S.)

  15. Evaluation of sanitary impact of environmental pollution and quantitative evaluation of sanitary risks; Estimation de l'impact sanitaire d'une pollution environnementale et evaluation quantitative des risques sanitaires

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-09-15

    The calculation of a sanitary impact present a great interest at the decision level for the decision-makers and the whole of concerned actors. It constitutes a first step to organize a social debate around the risk acceptance, to analyze the feasibility of an inquiry or an epidemiological surveillance or to proportion an activity leading to pollutants emission in natural medium. Several conclusions are brought out: it is justified to estimate a sanitary impact from a sanitary risk excess, especially coming from animal tissue. It is conceivable to go beyond an estimation of the only individual risk and to calculate a number of cases in excess in the concerned population. The working group underlines that the characteristics of the situation are the determining factor to give the type of response to bring. The effective of the population is an important element and a situation has not to be underestimated because of the size at the pretext that the excess calculation leads to a number of cases inferior to one leading to believe that the impact is minor or negligible while the individual probability is high. The sanitary impact, expressed by the number of cancer cases in excess in an exposed population is quantified from the average value of excess of sanitary risk multiplied by the population effective, and expressed with a confidence interval. The sanitary impact can be expressed under the form of a percentage of the population present in the exposure area and goes past the comparison marks usually pointed up. This practice must be cheered. An analysis of uncertainties must be made as often as possible. (N.C.)

  16. Information diffusion system for encouraging small and medium-size companies to improve their environmental performances; Systeme de diffusion d'information pour encourager les PME-PMI a ameliorer leurs performances environnementales

    Energy Technology Data Exchange (ETDEWEB)

    Gondran, N.

    2001-11-01

    Small and Medium-sized Enterprises (SMEs) are the cornerstone of the French economy and job creation. However, due to financial and resource constraints, they are not inclined to look for environmental information autonomously. As a result, they often consider environmental issues as a constraint rather than a potential benefit. SMEs generally invest neither time nor money in order to reduce the environmental impacts of their activities and thus remain in an 'inactivity cycle'. Their global environmental impact cannot be neglected which makes their interested parties more and more concerned. The aim of this study is to analyse the environmental information system of SMEs in order to identify scope for potential improvements. The first hypothesis of this study is that SMEs do not have the knowledge that is necessary in order to implement a 'rational' pollution prevention policy. It is also assumed that access to environmental information is necessary for the SME to reduce the environmental impact of its activities. In order to validate these hypotheses and to identify which information channels contribute to the reduction of environmental impacts, a method is proposed to simultaneously evaluate the environmental policies of the SME and its ability to access to environmental information. This approach has been used to survey 47 SMEs. In addition, more than 300 pieces of information that were given to companies by two industrial associations were analysed. These data were analysed using principal component analysis, multiple correspondence analysis and chi square tests on contingency tables. The survey shows that SMEs favour direct contact with various organisations. The more a company is open to partners, the more it prevents pollution. Each SME has a different 'partnership profile' according to the area where it is situated, its level of independence, its status according to environmental legislation and its situation with respect to quality standards. Most of the surveyed companies do not conform to the environmental legislation. Six criteria have been determined to have a significant impact on the level of pollution prevention: the company's status according to environmental legislation, the presence of an environmental manager, the type of motivation of its manager and its situation with respect to quality standards. A set of 15 indicators was employed to evaluate the environmental behaviour of the SME. The analysis of the information that had been given to firms by environmental experts led to a classification of environmental information into four categories: its type (about the environment, about the pollution prevention, organisations that are involved in environmental protection, events and references), its theme and its decisional and geographical levels. A model of how to use environmental information is proposed for SMEs. lt is based on the meta-system model that is proposed by J. VAN GIGCH. This model can be used to diagnose the dysfunction of the environmental information system of a SME. To stimulate pollution prevention amongst SMEs, it would seem necessary to favour partnerships between public and private organisations through the implementation of projects that aim to help SMEs to improve their environmental performances. Thus, local partners can distribute environmental information by direct contact with the SMEs. In order to help in the organisation of such projects, a methodological guide is proposed. (author)

  17. Sorption mechanisms of iodide ions on oxides and divided copper sulfides; environmental outlook; Mecanismes de sorption des ions iodure sur les oxydes et les sulfures de cuivre divises; perspectives environnementales

    Energy Technology Data Exchange (ETDEWEB)

    Lefevre, G

    1999-10-15

    The radioactive iodine released in environment is a great risk for health. Copper compounds have a sufficient affinity for tracking this element inside a solid phase. These researches are useful in 1)the obtention of a hatch material hindering the iodine 129, released by nuclear wastes, to reach the biosphere, 2)the development of decontamination processes, 3)the forecast of the becoming of iodine in the environment, and 4)the design of analyses methods based on a iodine preconcentration on a solid. Three copper systems have been used: Cu{sub 2}O, copper sulfides (Cu{sub 2}S, CuFeS{sub 2} and CuS) and the mixture metallic copper/copper(II)carbonate. CuI is formed on Cu{sub 2}O in acid solutions. The adsorption of iodines occur in basic solutions, by exchange with Cu{sub 2}O surface hydroxyls, which losses its fixation properties if a reduction potential transforms it into metallic copper. An electrochemical analysis method of the iodine by preconcentration on Cu{sub 2}O in acid solution has been developed; its detection limit is of 5.10{sup -7} M. The three sulfide used (Cu{sub 2}S, CuFeS{sub 2} and CuS) adsorb the iodides. The similarity of their reactivity is due to the presence of copper(I). The stability of Cu{sub 2}S and CuFeS{sub 2} could allow to these compounds to keep their efficiency to the reducing potentials of the underground medium. At last, when they are into contact with a metallic copper/azurite mixture, the iodides precipitate to the copper surface. This study is then a synthesis of the properties of the copper(I) systems towards iodides in high concentration ({>=}10{sup -4} M). (O.M.)

  18. Transports and the energy: structural choices and environmental constraints. What is the role of the public authorities?; Les transports et l'energie: les choix structuraux et les contraintes environnementales. Quel role pour la puissance publique?

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-12-15

    The framework of this report focused on mainly France, the goods transports and the urban transports, offering a large place to the institutional aspects. The two first parts of the report are devoted to the state of the art and to a diagnostic of the system energy-transport and of the institutional device in France. the third part concludes that a voluntary action will ne necessary. Many propositions are provided around scenari which reveal different society choices. (A.L.B.)

  19. Valorisations environnementale, énergétique et agronomique de la biométhanisation industrielle appliquée à la biomasse avicole récupérée en Tunisie

    Directory of Open Access Journals (Sweden)

    Youssef M'SADAK

    2015-12-01

    Full Text Available This work consists on the study of the methanic fermentation, applied to the chicken manure, at an industrial pilot digester of Hammam Sousse (Tunisia. The analytical monitoring of the digester has focused on the one hand, on the determination of certain characteristics of the chiken effluent by the analysis of the physicochemical and environmental parameters, and on the other hand, on energy monitoring by assessing the qualitative productivity of the produced biogas. Furthermore, the present study focused on the partial substitution of the Gross Sylvicole Compost (CSB, produced locally, by the chicken methacompost. The agronomic evaluation of the chicken methacompost was based on Acacia cyanophylla germination and plant growth. Upon completion of the experiment, the best assessments of the depollution on the liquid digestate are obtained at the setting basin. The interest of purification of the biogas was shown by comparing the results before and after purification in terms of gaseous composition and calorific value. The incorporation of chicken methacompost with the CSB haa a remarkable positive effect on germination, and consequently, on the growth of the seedlings, in terms of height and diameter.

  20. Laurent Mermet (dir., Étudier des écologies futures. Un chantier ouvert pour les recher­ches prospectives environnementales. P.I.E.-Peter Lang, EcoPolis. Vol. 5, 2005, 411 p.

    Directory of Open Access Journals (Sweden)

    Magalie Franchomme

    2006-03-01

    Full Text Available L’ouvrage ici proposé est le résultat d’un travail d’équipe réunissant cinq chercheurs et doctorants : Laurent Mermet (coordinateur, professeur, Xavier Poux (chercheur associé, Hubert Kieben, Sébastien Treyer et Ruud Van der Helm (doctorants. Ces derniers ont fonction­né durant 5 ans (1999-2003 au sein d’un pole prospective à l’intérieur du groupe de recherche en gestion sur les territoires et l’environnement (RGTE. Ce programme appuyé par l’ENGREF (Ecole Nationale du Génie Rural des Eau...

  1. Energy-economy relationship and environmental regulation in the presence of unrecorded economy; Relation energie-economie et regulation environnementale en presence de l'economie non-enregistree

    Energy Technology Data Exchange (ETDEWEB)

    Karanfil, F.

    2008-12-15

    This PhD thesis including five manuscripts and a brief international comparison analysis proposes a multi-field study on the economic and environmental effects of energy consumption. It first investigates the causal relationship between economic growth and energy consumption in Turkey and then offers a new methodology for the estimation of unrecorded economy based on environmental data. The thesis develops also asymmetric information models, where the regulator does not know the true emission level of each firm that it wishes to regulate, so as to examine to what extend different enforcement mechanisms affect incentives for the firms to reduce polluting emissions and to invest in clean energy technologies. In order to provide a complete insight on the effects of both fiscal and environmental enforcement policies, some similar analysis are conducted taking into account the existence of unrecorded economy. The results in this thesis essentially show that: first, energy conservation policies can be implemented in order to reduce greenhouse gas emissions without any adverse effect on the recorded economic activities; second, different audit mechanisms should be used depending on the environmental objective of the enforcement agency; third, in some cases, environmental regulations may increase the size of unrecorded economy; fourth, economic policies to combat unrecorded economy may not serve as a complement to energy conservation policies. (author)

  2. Production d'acide phosphorique par attaque chlorhydrique de minerais phosphatés avec réduction des nuisances environnementales et récupération des terres rares en tant que sous-produits

    OpenAIRE

    Pereira, Fernando

    2003-01-01

    232 pages; The sulphuric acid route for phosphate rock (intended to the industry of fertilizers) presents many inconveniences : impossibility of recuperation of high commercial value's by-products such the rare earths, existence of strong restrictions conditioned by the protective environment's laws, 250 millions of tons of impure and radioactive phosphogypsum annually produced, environmental problems bound to the phosphogypsum storage (pollution of the grounds waters, of the rivers, ). This ...

  3. Couplage des cultures de microalgues avec la méthanisation : traitement et valorisation de la matière et de l’énergie dans le cadre de la bioraffinerie environnementale

    OpenAIRE

    Sialve, Bruno

    2013-01-01

    L’utilisation des microalgues dans les filières bioénergies est une thématique qui connait un développement remarquable ces dernières années. Si dans une perspective d’exploitation de masse, elles permettent de répondre plus favorablement aux contraintes qui pèsent sur l’exploitation des biocarburants de première et de deuxième génération, elles se heurtent également à la question de la demande en éléments nutritifs mais aussi à un bilan énergétique défavorable. En conséquence, il apparait di...

  4. Environmental assessment of the reuse of municipal solid waste incineration bottom ash in quarry backfilling; Evaluation environnementale de la valorisation de machefers d'incineration d'ordures menageres en remplissage de carriere

    Energy Technology Data Exchange (ETDEWEB)

    Brons-Laot, G.

    2002-10-15

    The leaching behaviour of three different MSWI bottom ashes-based materials containing hydraulic binders is assessed in the conditions specified by the quarry backfilling application. An adapted approach methodology is applied: - physical, mineralogical and chemical characterizations of materials, - use of parametric tests to determine the effect of main scenarios factors on the release, - chemical modelling based on mineralogical and experimental leaching data with geochemical calculation codes, - chemical reaction / transport coupled modelling. The main results demonstrate that: - the batch and dynamic tests allow to obtain enough data to model and to predict the long term behaviour, - the chemical modelling of the solid / liquid equilibrium permits the determination of the chemical reactions involved and the prediction of pollutants solubilization in different chemical contexts, - the new materials (source term) present a low environmental impact in the conditions specified by the considered scenarios. (author)

  5. Mesures d'incitation en faveur de la conservation de la diversité génétique en matière agricole. 2. Analyse des mesures agri-environnementales belges

    Directory of Open Access Journals (Sweden)

    Carine Baltus

    1997-01-01

    Full Text Available Incitation measures in favour of a conservation of genetic diversity for agricultural matters. 2. Analysis of the Belgian agro-environmental measures.The environmental cost of an intensive agriculture can be high. Nevertheless, any policy to protect the environment and the biological diversity has to take into account the agricultural sector considering the surface of national territory taken up by cultivated lands. The political authorities are faced with the choke of either to assert the individuel responsability for naturel resources by ecotaxes or to soften, by agroenvironmental measures, the productivist logic of our agriculture by attenuating the most flagrant nuisances to which the general public is the most sensitive. The environmental benefit of the application of agro-environmental measures will depend above all on their impact and on the farmers participation. To know the efficiency of the measures would require the use of tools assessing their impact. Concerning the extent of the adoption of the agro-environmental measures by the agricultural world, it is obvions that it will chiefly be determined by their economic attractivity. As yet, it generally seems low. Concerning the enforcement of ecotaxes, it should be progressive, so as not to penalize farmers which have a vert' narrow margin to manoeuvre in changing their crop management sequence. The objective of a sustainable agriculture would require the setting-up, of three action lines, complementary to the particular measures previously mentioned: the setting-up of instruments to measure biodiversity; the establishment of measures for a financial evaluation of the net cost of agroenvironmental measures; the setting-up of coordinated policies for research and other instruments of agricultural policy.

  6. Aires protégées, gestion participative des ressources environnementales et développement touristique durable et viable dans les régions ultra-périphériques

    Directory of Open Access Journals (Sweden)

    Jean-Marie Breton

    2009-09-01

    Full Text Available Le tourisme est souvent présenté comme l’un des instruments d’un développement durable, même s’il connaît une expansion difficilement maîtrisable, au détriment du patrimoine environnemental, insulaire et littoral en particulier, comme dans les DOM-TOM.Le tourisme a des impacts, culturels et sociaux notamment, sur l’environnement. Les ressources du patrimoine alimentent de leur côté la demande et l’offre touristiques. Un tourisme assis sur une gestion ad hoc des ressources du patrimoine constitue un facteur puissant de durabilité du développement local. La soumission de l’activité touristique aux exigences de protection, de conservation et de gestion reproductible de la biodiversité et du patrimoine naturel, dans les aires protégées de la Caraïbe française en particulier, génère des approches, des stratégies et des comportements nouveaux. La démarche écotouristique appelle une gestion participative et intégrée des ressources et des espaces, et constitue un défi pour les opérateurs du tourisme comme pour les acteurs de l’environnement, et une opportunité de "réappropriation" de leur milieu de vie par les populations locales. Il faut alors en clarifier le concept et les implications ; puis en analyser les objectifs et les enjeux dans une perspective de développement durable.Tourism often appears as one a tool for a sustainable development, even if it is not easy to control, in the détriment of island and costal environment heritage, as in French overseas regions. Besides the cultural and social impacts of tourism upon environment, the heritage resources nuture the touristic request and offer. If based on an appropriate management of those resources, it may be a strong incentive for local sustainable development. The respect of protection, conservation and sustainable management of biodiversity and natural resources by tourism, especially in the overseas regions of French West Indies, produces new approaches, strategies and behaviours. The ecotourism approach, calling for a joint and integrated management of resources and areas, is a challenge for tour operators as for environment actors, and brings local population an opportunity to reappropriate their life environment. Its concept and implications must then be clarified, before analysing its aims and stakes regarding sustainable development

  7. Formation of novel spiro, spiroansa and dispiroansa derivatives of ...

    Indian Academy of Sciences (India)

    Administrator

    49 421. 13. Cros S, Faucher J P, Francois G, Labarre J F, Levy G and Sournies F Eur. J. Cancer submitted for publica- tion. These tests were performed at-the Laboratoire de Toxicologie et Pharmacologie Fondamentales du. CNRS, Toulouse. 14. Yildiz M, Yilmaz S and Dölger B 2007 Russian J. General Chem. 77 12 2117.

  8. Contribution à l'étude comparative des laits crus des chamelles ...

    African Journals Online (AJOL)

    SARAH

    30 juin 2016 ... OULD MOUSTAPHA Abdellahi1* et OULD HAMADI Sidi2. 1Service de toxicologie et de Contrôle Qualité, Institut Nationale de la Recherche en Santé Publique, BP 695,. Nouakchott, Mauritanie. 2 Département de Sciences et Technologies des Aliments à l'institut Supérieur d'Enseignement Technologique.

  9. Détection des résidus d'antibiotiques dans les denrées alimentaires ...

    African Journals Online (AJOL)

    SARAH

    30 juin 2016 ... Détection des résidus d'antibiotiques dans les denrées alimentaires d'origine bovine et aviaire commercialisées à Lubumbashi (RD Congo). OKOMBE Embeya Victor 1*, LUBOYA Wa Luboya Roger2, NZUZI Mavungu Gael1, PONGOMBO. Shongo Célestin 1. 1Service de Pharmacologie, Toxicologie et ...

  10. Plutonium demonstration assemblies in the CNA core

    International Nuclear Information System (INIS)

    Romain, J.L.

    1975-01-01

    The SENA (Societe d'Exploitation Nucleaire des Ardennes) has decided to load two plutonium assemblies at the beginning of the 6th cycle of the CNA (Centrale Nucleaire des Ardennes). These assemblies will be loaded in September 1975 and will undergo three irradiation cycles. A general description of these two assemblies and nuclear design calculations that have been performed are presented [fr

  11. 1: the atom. 2: radioactivity. 3: man and radiations. 4: the energy. 5: nuclear energy: fusion and fission. 6: the operation of a nuclear reactor. 7: the nuclear fuel cycle; 1: l'atome. 2: la radioactivite. 3: l'homme et les rayonnements. 4: l'energie. 5: l'energie nucleaire: fusion et fission. 6: le fonctionnement d'un reacteur nucleaire. 7: le cycle du combustible nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-07-01

    This series of 7 digest booklets present the bases of the nuclear physics and of the nuclear energy: 1 - the atom (structure of matter, chemical elements and isotopes, the four fundamental interactions, nuclear physics); 2 - radioactivity (definition, origins of radioelements, applications of radioactivity); 3 - man and radiations (radiations diversity, biological effects, radioprotection, examples of radiation applications); 4 - energy (energy states, different forms of energy, characteristics); 5 - nuclear energy: fusion and fission (nuclear energy release, thermonuclear fusion, nuclear fission and chain reaction); 6 - operation of a nuclear reactor (nuclear fission, reactor components, reactor types); 7 - nuclear fuel cycle (nuclear fuel preparation, fuel consumption, reprocessing, wastes management). (J.S.)

  12. Project of law relative to the sanitary consequences of French nuclear weapons tests; Pojet de loi relatif a la reparation des consequences sanitaires des essais nucleaires francais

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2009-05-15

    In order to make easy the indemnifications and to include the persons having participate to nuclear weapons tests (Sahara and French Polynesia) and populations leaving in the concerned areas, the project of law relative to the repair of sanitary consequences of nuclear weapons tests proposes to create a right to integral repair of prejudices for the persons suffering of a radioinduced disease coming from these tests. The American example and the British example are given for comparison. The modalities of financing are detailed as well as the social economic and administrative impacts. (N.C.)

  13. Compensation for damages in case of a nuclear accident; L'indemnisation des prejudices en cas d'accident nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Leger, M. [CEA Saclay, 91 - Gif sur Yvette (France)

    2011-01-15

    This article presents the system of compensation for damages in case of a nuclear accident. This system of civil liability for nuclear damage, as a specific regime, departs on several points from the common rules of civil liability, in order to provide an adequate and equitable compensation for the damages suffered by the victims of nuclear accidents. The French system of civil liability for nuclear damage results from two International Conventions integrated in French law (Paris convention 1960 and Brussels convention 1963) and the French law of 1968, October 30 on civil liability in the area of nuclear energy. These texts define the conditions under which a nuclear operator could be held liable in case of a nuclear accident. The protocols to amend the Paris and Brussels Conventions of 2004, not yet come into force, are also presented. They ensure that increased resources are available to compensate a greater number of victims of a nuclear accident. (author)

  14. The compensation of losses in case of a nuclear accident; L'indemnisation des prejudices en cas d'accident nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Leger, M. [CEA Saclay, Dir. Juridique et du Contentieux, 91 - Gif-sur-Yvette (France)

    2010-07-01

    After having recalled that the elaboration of a special regime of liability for nuclear damages due to a nuclear accident aimed at conciliating two distinct objectives (to protect population and workers, and to provide a judicial security to the nuclear industry), this document comments the present regime of nuclear civil liability, its legal framework and its evolution. It comments its scope of application (geographical field of application, concerned activities, covered damages), and the principles of nuclear civil liability regime (a specific regime has been introduced by the Paris Convention for the operators). The content of Paris and Brussels Conventions review protocols which have been signed in 2004 is described

  15. Nuclear magnetic resonance at 310 MHz in a superconducting solenoid; Resonance magnetique nucleaire a 310 MHz dans un solenoide supra-conducteur

    Energy Technology Data Exchange (ETDEWEB)

    Dunand, J.J. [Commissariat a l' Energie Atomique, Grenoble (France). Centre d' Etudes Nucleaires

    1970-07-01

    The realisation of an NMR spectrometer with a superconducting magnet is presented in the first section. The methods to attain the best possible homogeneity of the magnetic field and to minimize the error in the spectrometer are described. The second section is devoted to the study of elastomers and nitr-oxides free radicals. A shift of the transition temperature with the magnetic field appears for the elastomers. The increasing paramagnetic shift has allowed a complete study by NMR of piperidinic and pyrrolidinic nitroxide free radicals. (author) [French] Dans la premiere partie est exposee la realisation d'un spectrometre de RMN utilisant un solenoide supraconducteur. Des solutions sont donnees pour obtenir la meilleure homogeneite possible du champ magnetique et pour minimiser les sources d'erreur apportees par le spectrometre. La deuxieme partie est consacree a l'etude d'elastomeres et de radicaux libres nitroxydes. Une variation de la temperature de transition avec le champ magnetique est mise en evidence pour les elastomeres. L'accroissement du deplacement paramagnetique a permis une etude complete par RMN des radicaux libres nitroxydes piperidiniques et pyrrolidiniques. (auteur)

  16. Researches on nuclear wastes. Knowledge gained and perspectives at the 2006 date line; Recherches sur les dechets nucleaires acquis et perspectives a l'echeance 2006

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-07-01

    The law from December 30, 1991, precisely defines 3 axes of researches for the management of high level and long-lived radioactive wastes: separation/transmutation, surface storage and underground disposal. A global evaluation report about these researches is to be supplied in 2006 by the French government to the Parliament. The responsibility of these researches is given to the French atomic energy commission (CEA) and to the national agency for radioactive wastes (ANDRA) who have to coordinate their works with other research organizations and industrialists. The aim of this colloquium is to make a status of the scientific knowledge gained before the implementation of the public and parliamentary debates on nuclear wastes management. This document gathers the presentations (slides) given at the colloquium and dealing with: separation/transmutation, storage and conditioning of waste packages; geologic disposal, the inter-disciplinary PACE program of the CNRS; synthesis of the researches evaluation process; general principles for a sustainable management of radioactive wastes; technical experience implemented by industrialists since 15 years; point of view of the nuclear safety authority; international context of nuclear waste management and related researches; a sociological enlightening: researches advance as seen by the public. (J.S.)

  17. Simulation of accelerator transmutation of long-lived nuclear wastes; Simulation de transmutation de dechets nucleaires a vie longue par accelerateur

    Energy Technology Data Exchange (ETDEWEB)

    Wolff-Bacha Fabienne [Paris-11 Univ., 91 - Orsay (France)

    1997-07-09

    The incineration of minor actinides with a hybrid reactor (i.e. coupled with an accelerator) could reduce their radioactivity. The scientific tool used for simulations, the GEANT code implemented on a paralleled computer, has been confirmed initially on thin and thick targets and by simulation of a pressurized water reactor, a fast reactor like Superphenix, and a molten salt fast hybrid reactor `ATP`. Simulating a thermal hybrid reactor seems to indicate the non-negligible presence of neutrons which diffuse back to the accelerator. In spite of simplifications, the simulation of a molten lead fast hybrid reactor (as the CERN Fast Energy Amplifier) might indicate difficulties in the radial power distribution in the core, the life time of the window and the activated air leak risk. Finally, we propose a thermoelectric compact hybrid reactor, PRAHE - small atomic board hybrid reactor - the principle of which allows a neutron coupling between the accelerator and the reactor. (author) 270 refs., 91 figs., 31 tabs.

  18. Measurement of neutrinos released in nuclear reactors through the Borexino experiment; Mesure des neutrinos de reacteurs nucleaires dans l'experience Borexino

    Energy Technology Data Exchange (ETDEWEB)

    Dadoun, O

    2003-06-01

    The main goal of the Borexino experiment is to measure in real time the solar neutrino flux from the beryllium (Be{sup 7}) line at 862 keV. Beyond this pioneer low energy neutrino detection, Borexino will be able to measure solar neutrinos above the MeV, (B{sup 8} neutrinos and pep neutrinos), nuclear reactor neutrinos (with an average energy of 3 MeV) and the supernova neutrinos (their spectrum goes up to some ten MeV). In this work I mainly focus on the study of the nuclear reactors neutrinos. This field has recently been enriched by the results of the KamLAND experiment, which have greatly improved the determination of the neutrino oscillation parameters. In order to measure these events which are above the MeV, the Borexino collaboration entrusted the PCC group at College de France, with the tasks of developing a fast digit system running at 400 MHz: the FADC cards. The PCC group designed the FADC cards and completed them at the beginning of 2002. The first cards which were introduced in the main electronic acquisition unit allowed us to control their functioning and that of the acquisition software. FADC cards were also installed in the Borexino prototype, CTF. The data are analysed in order to determine a limit to the expected background noise of Borexino in measuring the nuclear reactor neutrinos. (author)

  19. Theme day: corrosion and surface treatments in nuclear facilities. Proceedings; Journee Thematique: Corrosion et Traitements de surface dans les Installations Nucleaires. Recueil des presentations

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-02-15

    This document brings together the available presentations given at the theme day organized by the Bourgogne Nuclear Pole on the topic of corrosion and surface treatments in nuclear facilities. Eleven presentations (slides) are compiled in this document: 1 - Introduction - PNB centre of competitiveness and R and D activities (A. Mantovan, PNB); 2 - Corrosion damage (M. Foucault, Areva NP - Centre Technique Le Creusot); 3 - Corrosion mechanisms (R. Oltra, UB-ICB); 4 - Examples of expertise management (C. Duret-Thual, Institut de la corrosion/Corrosion Institute); 5 - General framework of surface treatments (C. Nouveau, ENSAM Cluny Paris Tech); 6 - Surfaces et interfaces characterisation - Part A (C. Langlade, Y. Gachon, UTBM and HEF); 7 - Surfaces et interfaces characterisation - Part B (C. Langlade, Y. Gachon, UTBM and HEF); 8 - Ion beam surface treatment (Y. Le Guellec, Quertech Ingenierie); 9 - Impact surface treatment (G. Saout, Sonats); 10 - Metal oxides Characterisation by US laser (R. Oltra, UB-ICB); 11 - Detection and Characterisation of intergranular corrosion (Y. Kernin, Stephane Bourgois, Areva Intercontrole)

  20. Symmetry and geometry of the N-body problem. Application to the nuclear physics; Symetrie et geometrie du probleme a N-corps. Application a la physique nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Chau, H.T.P

    2002-10-01

    One of the main goals of classical and quantum physics is to solve the many-body problem. In nuclear theory, several methods have been developed and provide accurate results. In this thesis, we remind how symmetry can be used to obtain analytical solutions of the quantum many-body problem. We emphasize that unitary Lie algebras play a crucial role in quantum mechanics and propose and implement a method to build irreducible representations of this algebra from its highest-weight state. Calculations of bosonic and fermionic spectra are performed with realistic and with random interactions. Studies with rotational invariant two-body random interactions have unveiled high degree of order (a marked statistical preference is found for ground states with angular momentum equal to zero). In the second chapter of this thesis, it is argued that the spectral properties of this kind of interaction depend on the choice of the valence space. In particular, we propose a geometrical method to predict the properties of the ground state in certain cases. We also present numerical results when the geometrical approach can not be applied. In the third chapter, we study the link between quantum chaos and nuclear spectra calculated with realistic interactions. (author)

  1. A few nuclear technologies in earth science and industry; Quelques techniques nucleaires dans l`industrie et les sciences de la terre

    Energy Technology Data Exchange (ETDEWEB)

    Caillot, A.

    1994-12-31

    The radioactivity pacific and favourable applications are very numerous. The sensitivity, the efficiency of these processes make them peculiarly attractive. Nevertheless, their implementation is a demanding job on account of numerous subjects that must acquire the specialists: nuclear, electronic and computing, fluid mechanics and sometimes... athletics when it concerns studies on the maritime sites. In spite of these numerous advantages, we must not deduce that those methods are the panacea destined to replace the other technologies. It`s the association of these two approaches which is an economy and progress supply.

  2. The origin of cholesterol in chyle demonstrated by nuclear indicator methods; Origines du cholesterol du chyle mises en evidence par la methode des indicateurs nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Vyas, M

    1962-07-01

    In order to obtain information about the mechanism of the intestinal absorption of cholesterol, rats having a lymphatic abdominal fistula are used. The animals receive either 4-{sup 14}C- cholesterol subcutaneously or orally, or the 1-{sup 14}C acetate. The study of the specific radio-activities of the cholesterol in chyle, in serum, in the lining, and in the intestinal contents makes it possible to define the roles played by the transfer cholesterol from the serum, by the cholesterol synthesised intestinally, and by the absorption cholesterol, in the formations of the lymph and of the chylomicrons. A new theory is proposed for the mechanism of cholesterol absorption. (author) [French] Pour obtenir des renseignements concernant le mecanisme de l'absorption intestinale du cholesterol, on utilise des rats porteurs d'une fistule lymphatique abdominale. Les animaux recoivent soit du cholesterol 4-{sup 14}C par voie sous-cutanee ou par voie orale, soit de l'acetate 1-{sup 14}C. L'etude des radioactivites specifiques du cholesterol du chyle, du serum, de la paroi et du contenu intestinal permet de preciser les roles joues par le cholesterol de transfert d'origine serique, par le cholesterol de synthese intestinale et par le cholesterol d'absorption, dans la formation de la lymphe et des chylomicrons. Une theorie nouvelle concernant le mecanisme de l'absorption du cholesterol est proposee. (auteur)

  3. Sustainable development and nuclear power: a battle that is one and the same; Le developpement durable et le nucleaire, meme combat

    Energy Technology Data Exchange (ETDEWEB)

    Kopecky, Maurice

    2012-02-15

    In highlighting the relentless march of climate change the author supports the use of nuclear energy as the right response to the problem, probably the only response possible in the face of safe and sustainable development on our planet

  4. Brittle-ductile transition for nuclear applications in contact with mercury; Transition fragile - ductile des aciers pour des applications nucleaires en contact avec du mercure

    Energy Technology Data Exchange (ETDEWEB)

    Medina-Almazan, L.; Auger, T.; Gorse, D. [CECM/CNRS-UPR2801, 15 rue Georges Urbain, 94407 Vitry sur Seine CEDEX (France)

    2006-07-01

    In this work is studied the mercury embrittlement of austenitic stainless steel 316L and ferritic-martensitic steel T91 at ambient temperature in carrying out tensile tests on CCT (Center Cracked Tension) specimens at solicitation velocities between 1.67*10{sup -8} and 6.67*10{sup -3} m.s{sup -1}. The results reveal that these two steels are sensitive to mercury embrittlement. A ductile-brittle transition of the steel 316L in contact to mercury in terms of the deformation velocity is observed. The early beginnings of such a transition are visible too on the steel T91 in the experiment conditions. On a some range of the solicitation velocity, the presence of mercury modifies the plastic behaviour of the material in inhibiting the nucleation-growth of the cavities. For these two steels in contact with mercury, in the area of velocities for which a brittle rupture is observed, it appears that the fracture is produced by de-cohesion of shear bands. (O.M.)

  5. The today situation and the nuclear sector perspectives in Usa; La situation actuelle et les perspectives du secteur nucleaire aux Etats-Unis

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-07-01

    In this analysis the author details and discusses the nuclear energy situation in the Usa: the park and the electric power production, the nuclear safety and the radiation protection, the licenses prolongation, the power increase, the regulation relative to the construction of new reactors, the combined construction permit and operating license, the uncertainties on the Yucca Mountain storage site and the Global Nuclear Energy Partnership initiative, the 2006 perspectives and the IV generation reactors. (A.L.B.)

  6. Pollution with an underlying of corruption. How Russia is becoming the world nuclear sewer; Pollution sur fond de corruption. Comment la Russie devient la poubelle nucleaire du monde

    Energy Technology Data Exchange (ETDEWEB)

    Melis, N

    2002-02-01

    Following the new laws decided by the Russian Government, concerning the radioactive wastes importation, many ecologist organizations fight against the future environmental and biological impacts of such a policy. This paper presents the legal situation, the Government attitude and the actions of russian and international organizations. (A.L.B.)

  7. Sweden: a new study confirms the competitiveness of nuclear energy; Suede: une nouvelle etude confirme la competitivite de l'energie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2010-11-15

    The results of a comparative study about the price of electricity according to its source of production in Sweden have been recently published. The costs concern the electricity produced in new facilities and financial incentives have not been taken into account. 2 scenarios are considered for nuclear energy according to whether or not the state gives its guaranty for the financing of new reactors. Wind energy: 645 SEK/KWh, nuclear energy without state financial guaranty: 421 SEK/KWh, hydraulic: 391 SEK/KWh, and nuclear energy with state financial guaranty: 295 SEK/KWh. (A.C.)

  8. French nuclear dissuasion after the cold war: continuity, ruptures, questions; La dissuasion nucleaire francaise apres la guerre froide: continuite, ruptures, interrogations

    Energy Technology Data Exchange (ETDEWEB)

    Tertrais, B

    2000-07-01

    Nuclear dissuasion is a slow and permanent process of adjustment to the strategic environment. French dissuasion adaptation to the new international environment covers a full decade, starting in the 1989-1992 era with a re-evaluation of defense programs. It has been followed by the 1994 defense white book which opens up the European perspective and reaches its peak in 1996 with a series of major decisions: renouncement of surface-to-surface missiles, launching of the M51 program, end of nuclear tests and shift towards simulation, dismantling of fissile materials production facilities etc. This process shows up two logics: the one of continuity with the confirmation of the bases of the French nuclear doctrine, and the one of discontinuity with significant changes in the general domain of the French nuclear policy. It also opens up questions about the field of application of dissuasion and the future of the nuclear consensus. (J.S.)

  9. Conference-debate 'When nuclear science provides health care' - Proceedings; conference debat 'Quand le nucleaire soigne' - Recueil des presentations

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-03-15

    At the occasion of the 2. issue of the 'Industry week, the 'French society of nuclear energy (SFEN) young generation' and the 'Women in Nuclear (WIN)' associations have organised in partnership with Nucleopolis and the Cherbourg-Normandie Techno-pole, a conference day on the topic 'why and how nuclear energy is used for cancer therapy'. Professors Jacques Foos, Jean Datchary and Denis Agostini were invited to treat this question. This document is the compilation of their 3 presentations: 1 - The discovery, principle and medical applications of radioactivity (J. Foos, CNAM); 2 - Cancer diagnosis and therapy with nuclear medicine (D. Agostini, CHU Caen); 3 - From diagnosis to therapy: the various radiotherapy methods (J. Datchary)

  10. Interest of nuclear medicine in the diagnosis of congenital and childhood hypothyroidism; Apports de la medecine nucleaire au diagnostic des hypothyroidies congenitales et de l'enfant

    Energy Technology Data Exchange (ETDEWEB)

    Clerc, J. [Hopital Necker, Medecine Nucleaire, 75 - Paris (France)

    2002-08-01

    The paediatric thyroid scan (PTS) remains a cornerstone test in guiding the etiological diagnosis of congenital hypothyroidism (CH). In hypothyroid babies, thyroxine therapy must be started immediately. A reliable PTS can be obtained in the following days even under T4 therapy. {sup 123}I is the isotope of choice since it provides quantitated images and a clinically relevant grading of dys-hormonal-genetic disorders. The dosimetry of {sup 123}I is lower than usually considered because iodine uptake is absent or low in most cases of CH and because the energy deposited within the colloid has no expected radiobiological detriment. PTS is a highly contributive, sensitive and reproducible test in identifying thyroid dysgenesis the most frequent etiology (70%) of permanent CH. Since agenesis requires a very careful T4 therapy monitoring, PTS is also of therapeutic interest. PTS can distinguish 3 types of dys-hormonal-genetic disorders (10%). In type 1, low uptake indicates a defective R-TSH or a NIS defect when {sup 123}I gastric uptake is absent. Type 2 - high uptake, goiter and positive perchlorate discharge test (PDT) - refers to organification defects (TPO, THOX1,2, Pendrin). Type 3 (goiter, high uptake, negative PDT) includes coupling defects, thyroglobulin abnormalities and dehalogenase deficiency. Main transient aetiologies (20%) of CH are iodine overload and blocking anti hR-TSH antibodies, while thyroiditis and dietary iodine overload are more frequent thereafter The molecular understanding of the defects involved in CH rapidly develops. However, precocious diagnosis, appropriate T4 therapy and sorting out the etiology are the most relevant parameters which determine the final clinical prognosis. (author)

  11. Nuclear energy fur civilian uses given the prospects of a changing climate; L'energie nucleaire civile dans le cadre temporel des changements climatiques

    Energy Technology Data Exchange (ETDEWEB)

    Dautray, R. [Academy des Aciences, 75 - Paris (France); Turpin, M. [ERAP, 75 - Paris (France)

    2003-01-01

    The worrisome issues resulting from the civilian use of nuclear energy are subjected to a scientific analysis in R. Dautray's report. They include: the risks of accidents and radiation, the question of nuclear wastes (in particular, plutonium and actinides), and the dangers of atomic weapons proliferating or nuclear plants being menaced by terrorists. The nuclear industry will not be able to go on unless it comes up with solutions acceptable to citizens. Even if the decision were made to put an end to nuclear power plants, a solution would have to be found for putting an end to the aftereffects. According to this report, it is indispensable to have a base of knowledge accepted by all if we are to weigh various proposals and make decisions. It contends that the program under way in France since the 1991 Bataille Act should, for the 2006 deadline, set as its main objective to define 'a general criterion of protection and confidence of the concerned workers and populations, a criterion worked out by their elected representatives, thus by public authorities'. The report's author has proposed points for drawing up such a criterion. (author)

  12. Should a reorganization of France's nuclear industry be envisaged?; La recomposition de l'industrie nucleaire francaise serait-elle necessaire?

    Energy Technology Data Exchange (ETDEWEB)

    Finon, D. [CNRS, CIRED, 94 - Nogent-sur-Marne (France)

    2011-03-15

    Recent proposals to reorganize the French reactor industry to increase its export capability are reviewed here. Based on its criticism of the technology on offer to export markets, the Rousselly report recommended making the national electricity company a lead company free to negotiate the sale of reactors of its choosing (including Gen2 reactors) and to make the French manufacturer the sub-contractor of the former. The Government did not adopt these recommendations and rightly so. Based on an analysis of the changing world market for reactors, perspective can be gained on the criticism made of Areva about its marketing thrust, as well as the advantage to be gained by broadening its reactor catalogue. This analysis brings out and underlines the significance of the technological and industrial resources of Areva relative to competitors and the relatively meagre advantage of architect/assembler and operator provided by the national electricity company in the conquest of export markets. In the final analysis, the mercantile approach proposed by the champions of this reform to improve competitiveness with low cost nuclear newcomers was ruled out the Government, even before the Fukushima accident. What is really required is a little more export coordination between the two entities. (author)

  13. Revision of by-laws about effluents of EdF's nuclear power plants; Revision des arretes de rejets des centrales nucleaires d'EDF

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-07-01

    In France, in application of the clean water law from January 3, 1992 and since the decree 95-540 from May 4, 1995, each basic nuclear facility receives a single permission which covers both its water takes and its radioactive and non-radioactive effluents. This decree, initially dedicated to new facilities has been enlarged to all existing installations for which the prefectorial by-laws have reached their date-line. Thus, up to now, five inter-ministerial by-laws have renewed the permissions of water takes and effluents evacuation of the power plants of Saint-Laurent-des-Eaux (Loir-et-Cher), Flamanville (Manche), Paluel (Seine-Maritime), Belleville (Cher) and Saint-Alban (Isere). These by-laws foresee an important abatement of the effluents and concern more particularly the tritium, {sup 14}C, the iodine isotopes and also some other non-radioactive chemical compounds. This document is a compilation of all revised by-laws about effluents and concerning the nuclear power plants listed above. (J.S.)

  14. Resolution Improvement in Multidimensional Nuclear Magnetic Resonance Spectroscopy of Proteins; Amelioration de la resolution dans la resonance magnetique nucleaire multidimensionnelle des proteines

    Energy Technology Data Exchange (ETDEWEB)

    Duma, L

    2004-07-01

    The work presented in this thesis is concerned with both liquid-state and solid-state nuclear magnetic resonance (NMR) spectroscopy. Most of this work is devoted to the investigation by solid-state NMR of C{sup 13}-enriched compounds with the principal aim of presenting techniques devised for further improving the spectral resolution in multidimensional NMR of microcrystalline proteins. In fully C{sup 13}-labelled compounds, the J-coupling induces a broadening of the carbon lineshapes. We show that spin-state-selective technique called IPAP can be successfully combined with standard polarisation transfer schemes in order to remove the J-broadening in multidimensional solid-state NMR correlation experiments of fully C{sup 13}-enriched proteins. We present subsequently two techniques tailored for liquid-state NMR spectroscopy. The carbon directly detected techniques provide chemical shift information for all backbone hetero-nuclei. They are very attracting for the study of large bio-molecular systems or for the investigation of paramagnetic proteins. In the last part of this thesis, we study the spin-echo J-modulation for homonuclear two-spin 1/2 systems. Under magic-angle spinning, the theory of J-induced spin-echo modulation allows to derive a set of modulation regimes which give a spin-echo modulation exactly equal to the J-coupling. We show that the chemical-shift anisotropy and the dipolar interaction tend to stabilize the spin-echo J-modulation. The theoretical conclusions are supported by numerical simulations and experimental results obtained for three representative samples containing C{sup 13} spin pairs. (author)

  15. The nuclear: energy and environmental stakes and political and strategic context; Le nucleaire: enjeux energetiques, environnementaux, et contexte politique et geostrategique

    Energy Technology Data Exchange (ETDEWEB)

    Lauvergeon, A

    2003-07-01

    This document mentions the intervention of Anne Lauvergeon, at the colloquium Adapes, ''the nuclear: energy and environmental stakes and political and geo-strategic context''. Anne Lauvergeon is president of the Areva board. This speech takes stock on the energy resources and demand facing the economic development in a context of an environmental quality and especially the part of the nuclear energy in the future. (A.L.B.)

  16. Democracy, the media stage and opinions evaluation. The particular case of nuclear; Democratie, scene mediatique et mesure des opinions. Le cas particulier du nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Ansel, Ph. [EDF, 75 - Paris (France); Pages, J.P. [CEA, 75 - Paris (France)

    1997-12-31

    The intention is pointed at the public opinion. The public debate, linked to the political system, is described in the frame where the opinions are expressed in interaction with the media. This debate has a fundamental role in the opinions structuration. Then it is shown how it is possible to introduce it in the way of measuring the opinions. Then, we arrive to the structures of public opinion. The analysis of facts registered during twenty years on nuclear energy allows to illustrate the interest of this global approach: considered from a controversy point of view, it is also a technical object and then it can be considered as a differentiation theme among others ones. (N.C.).

  17. Nuclear energy: democracy flouted. La Hague in the center of the debate; Nucleaire: la democratie bafouee. La Hague au coeur du debat

    Energy Technology Data Exchange (ETDEWEB)

    Anger, D

    2002-07-01

    In this book, the author denounces the collusion between the French government and the nuclear lobby and the dark side of the implementation of the nuclear program in France without any real democratic debate with the citizens. The history of the La Hague radioactive waste facility is taken as an example. The author recommends the development of alternative and decentralized energy sources. He considers also that the main questions generated by the nuclear industry (radioactive wastes, spent fuels reprocessing, health hazards, environmental impact, terror threat..) are still unanswered since 30 years. (J.S.)

  18. Problematics due to tritium in materials in the nuclear field - some examples; Problematiques liees au tritium dans les materiaux dans le domaine nucleaire - quelques illustrations

    Energy Technology Data Exchange (ETDEWEB)

    Gastaldi, O. [CEA Cadarache (DEN/DTN/STPA/LPC), 13 - Saint-Paul-lez-Durance (France)

    2007-07-01

    After a presentation of the tritium sources in our environment, is evoked succinctly the different ways to produce it. Then, for each reactor type, are presented the main problematics due to tritium. In this part, the questions of tritium transfer are illustrated for fission reactors: pressurized water reactors, CANDU reactors and for fast neutrons reactors. The case of fusion tokamaks is described more particularly. Several aspects are presented successively: the requirement to produce it in-situ with fitted materials, the definition of a short fuel cycle allowing to recover important quantities of tritium having not react...In a last part, are presented the aspects directly induced by the behaviour of tritium in materials. The first point concerned is the control of the tritium inventory in a fusion tokamak, for safety reasons. Examples are given from experiment feedback on running fusion tokamaks. A projection at the ITER case is proposed. The mechanisms leading to tritium retention according to the materials considered at the present time are analyzed and synthesized. The second important point is the tritium management at the end of the tokamak running. The specific problematics of this management are presented. (O.M.)

  19. Problems bound to the tritium in materials for the nuclear - some illustrations; Problematiques liees au tritium dans les materiaux dans le domaine nucleaire - quelques illustrations

    Energy Technology Data Exchange (ETDEWEB)

    Gastaldi, O. [CEA Cadarache (DTN/STPA/LPC), 13 - Saint-Paul-lez-Durance (France)

    2007-07-01

    The tritium control takes more and more importance in the nuclear industry because of the release more and more limited, in the environment. After a presentation on the tritium sources in the environment, the author presents the different ways of its production. Then for each reactor channel, the main problems are presented (fission and fusion). The last part deals with the behavior of the tritium in materials: the tritium inventory control in a fusion system, the tritium management after the reactor exploitation. (A.L.B.)

  20. The nuclear fuel cell; Le cycle du combustible nucleaire: de la mine d'uranium jusqu'au recyclage et aux dechets

    Energy Technology Data Exchange (ETDEWEB)

    Rigny, P.

    2010-10-15

    The radioactive material, basically uranium, as found in nature is far from suited to enter in the chain reactions needed to produce energy. It has to be concentrated, transformed in chemical forms which allow its isotopic enrichment, transformed again - chemically and physically - to fabricate the fuel elements to be used in the reactor. After combustion, it has turned into a complex mixture of radioelements which has to be processed for the useful part to be extracted for recycling. The remaining part is the radioactive waste that has to be conditioned for the protection of the people. These very numerous transformations are a very complex set of operations. Much research and much industrial development have been and still are required to define and optimize them. They form the 'nuclear fuel cycle', described and analyzed in this paper. (author)

  1. Study 2: the precaution applied to long-life nuclear wastes; Etude 2: la precaution appliquee aux dechets nucleaires a vie longue

    Energy Technology Data Exchange (ETDEWEB)

    Marignac, Y. [Centre Scientifique, 91 - Orsay (France)

    2000-07-01

    Among the problems bonded to the energy development, some risks take a global aspect. These risks concerned the resources management, the safety and by-products accumulation (greenhouse gases or nuclear wastes). This document deals with the nuclear wastes problem, which is not studied today on at international scale. A first part presents the general problem of the long-life wastes in France to define an indicator for the nuclear wastes production. This criteria allows to measure the prevention strategy efficiency. A second part deals with financial aspects and calculates the cost-efficiency factor of the nuclear wastes storage facing their processing. (A.L.B.)

  2. The creation of IRSN Institute of radiation protection and nuclear safety; La creation de l'IRSN Institut de Radioprotection et de Surete Nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-03-01

    The creation of the Institute of Radiation Protection and Nuclear Safety (I.R.S.N.) answers to the government will to modify the organisation of safety and radiation protection, in order to separate the functions of expert, monitor and operator. The I.R.S.N. has for missions to realize expertise by giving to the government advice on nuclear risks; to conduct researches in order to improve the knowledge; to work towards radiation monitoring of environment and workers as well as exposure sources to radiations. (N.C.)

  3. A new context for the nuclear research and industry; Un nouveau contexte pour la recherche et l'industrie nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-11-20

    Pascal Colombani, general administrator of the CEA, develops in this presentation the situation of the nuclear industry to introduce the new orientations of the CEA group. The energy context, the deregulation impacts, the energy dependence and the greenhouse effect project are discussed before the presentation of the research programs and the necessary reorganizing of the nuclear industry. (A.L.B.)

  4. The threat of nuclear terrorism: from analysis to caution measures; La menace du terrorisme nucleaire: de l'analyse aux mesures de precaution

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, M

    2001-12-15

    In this work are analysed the different cases of terrorism attacks, the potential sources of risks, such reprocessing plants, nuclear power plants, every facility where is stored radioactive material. The vulnerability of these facilities is also evoked. Some solutions are recommended but more specially, further thought needs to be given to that kind of problems. (N.C.)

  5. Long-dated evaluation of the external costs of the nuclear; L'evaluation des couts externes a long terme de la filiere nucleaire: interets et limites

    Energy Technology Data Exchange (ETDEWEB)

    Le Dars, A.; Schneider, T

    2002-09-01

    Since the middle of the years 1990, the European Commission developed an ''ExternE'' methodology to propose an homogenous evaluation of the sanitary and environmental external costs of the various energy sectors in Europe. This document discusses the taking into account of the long-dated and analyzes the interests and the limits of the monetary evaluation, in terms of external costs, of the nuclear choice. It is organized in three chapters: 1. a presentation and a discussion on the various evaluation of the ''ExternE'' methodology; 2. a description of the available methods for the monetary evaluation of the long-dated impacts and more particularly the analysis of the monetary values actualization principle; 3. highlighted of the impacts for which the monetary evaluations exist. (A.L.B.)

  6. Life time of nuclear power plants and new types of reactors; La duree de vie des centrales nucleaires et les nouveaux types de reacteurs

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-05-01

    This report, realized by the Evaluation Parliamentary Office of scientific and technological choices, aims to answer simple but fundamental questions for the french electric power production. What are the phenomena which may limit the exploitation time of nuclear power plants? How can we fight against the aging, at which cost and with which safety? The first chapter presents the management of the nuclear power plants life time, an essential element of the park optimization but not a sufficient element. The second chapter details the EPR and the other reactors for 2015 as a bond between the today and tomorrow parks. The last chapter deals with the necessity of efforts in the research and development to succeed in 2035 and presents other reactors in project. (A.L.B.)

  7. No 2943. Project of law relative to nuclear transparency and safety; N. 2943. Projet de loi relatif a la transparence et a la securite en matiere nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-03-15

    This project of law comprises 5 titles dealing with: 1 - general dispositions: definition and scope of nuclear safety, security, radiation protection, operators liability, facilities in concern; 2 - the high nuclear safety authority: role and duties; 3 - public information in the domain of nuclear safety and radiation protection: information right of the public, local information commissions, high committee for nuclear safety transparency and information; 4 - basic nuclear facilities and transport of radioactive materials: applicable rules, police controls and measures, penal dispositions (investigations, sanctions); 5 - miscellaneous dispositions: changes made with respect to previous legislative texts. (J.S.)

  8. Assessment of subcriticality during PWR-type reactor refueling; Evaluation de la sous-criticite lors des operations de chargement d'un reacteur nucleaire REP

    Energy Technology Data Exchange (ETDEWEB)

    Verdier, A

    2005-04-15

    During the core loading period of a PWR, any fuel assembly misplacements may significantly reduce the existing criticality margin. The Dampierre 4-18 event showed the present monitoring based on the variations of the outside-core detector counting rate cannot detect such misplacements. In order to circumvent that, a more detailed analysis of the available signal was done. We particularly focused on the neutronic noise analysis methods such as MSM (modified source multiplication), MSA (amplified source multiplication), Rossi-{alpha} and Feynman-{alpha} methods. The experimental part of our work was dedicated to the application of those methods to a research reactor. Finally, our results showed that those methods cannot be used with the present PWR instrumentation. Various detector positions were then studied using Monte Carlo calculations capable of following the neutron origin. Our results showed that the present technology does not allow us to use any solution based on neutron detection for monitoring core loading. (author)

  9. Experimental study of the hydrodynamic instabilities occurring in boiling-water reactors; Etude experimentale des instabilites hydrodynamiques survenant dans les reacteurs nucleaires a ebullition

    Energy Technology Data Exchange (ETDEWEB)

    Fabreca, S. [Commissariat a l' Energie Atomique, Grenoble (France). Centre d' Etudes Nucleaires

    1964-10-01

    The subjects is an experimental out-of pile loop study of the hydrodynamic oscillations occurring in boiling-water reactors. The study was carried out at atmospheric pressure and at pressure of about 8 atmospheres, in channels heated electrically by a constant and uniform specified current. In the test at 8 atmospheres the channel was a round tube of approximately 6 mm interior diameter. At 1 atmosphere a ring-section channel was used, 10 * 20 mm in diameter, with an inner heating tube and an outer tube of pyrex. It was possible to operate with natural convection and also with forced convection with test-channel by-pass. The study consists of 3 parts: 1. Preliminary determination of the laws governing pressure-drop during boiling. 2. Determination of the fronts at which oscillation appears, within a wide range of the parameters involved. 3. A descriptive study of the oscillations and measurement of the periods. The report gives the oscillation fronts with natural and forced convection for various values of the singular pressure drop at the channel inlet and for various riser lengths. The results are presented in non-dimensional form, which is available, in first approximation, for all geometric scales and for all fluids. Besides the following points were observed: - the wall (nature and thickness) can be an important factor ; - oscillation can occur in a horizontal channel. (author) [French] II a ete effectue une etude experimentale, en boucle hors-pile, des oscillations hydrodynamiques survenant dans les reacteurs a ebullition. L'etude a ete effectuee a la pression atmospherique et a une pression voisine de 8 atmospheres dans des canaux chauffes electriquement a puissance imposee constante et uniforme. Dans les essais a 8 atmospheres le canal etait un tube circulaire de diametre interieur 6 mm environ. A 1 atmosphere le canal etait de section annulaire 10 * 20 mm avec un tube interieur chauffant et un tube exterieur en pyrex. Le fonctionnement etait possible en convection naturelle et en convection forcee avec by-pass du canal d'essai. L'etude comporte 3 parties: 1. L'etablissement prealable des lois de la perte de pression en ebullition. 2. La determination des frontieres d'apparition de l'oscillation, dans une gamme tres large des parametres intervenant. 3. Une etude descriptive des oscillations et la mesure des periodes. Les frontieres de l'oscillation sont fournies en convection naturelle et en convection forcee pour diverses valeurs de la perte de charge singuliere a l'entree du canal et pour differentes longueurs de cheminee. Les resultats sont presentes sous une forme adimensionnelle valable en premiere approximation quelles que soient l'echelle geometrique et la nature du fluide. Enfin on a constate les particularites suivantes: - la paroi (nature et epaisseur) peut jouer un role important; - l'oscillation est possible en canal horizontal. (auteur)

  10. Physicochemical state of the spent fuel leaving the reactors; Le combustible nucleaire et son etat physico-chimique a la sortie des reacteurs

    Energy Technology Data Exchange (ETDEWEB)

    Dehaut, Ph

    2000-07-01

    This report focuses on the current knowledge, updated at the end of 1999, about the physicochemical state of the fuels leaving light water reactors, and particularly pressurized water reactors. Lessons are withdrawn from it making it possible to determine the points which require a necessary deepening of the data and coherence of interpretations. Lastly, evolution of the sailed fuel rod as well as the potential availability of gases and volatile fission products, during a secular storage or of a multi-millennium disposal, are the subject of an attempt at forecast. Accessible data in the scientific literature, or those acquired at the CEA, are particularly numerous. Their analysis and their synthesis are joined together to constitute a collection of references intended to the specialists in nuclear fuel and for all those which contribute to the reflexion on the storage or final disposal of the irradiated fuel. This memory is structured in ten chapters. The last chapter makes it possible to retain on some pages, the essential lessons of this study. Chapter I: Introduction; Chapter II: Characteristics of assemblies and fuels before irradiation; Chapter III: Transformations in reactor; Chapter IV: State of rods leaving the reactor; Chapter V: State of pellets; Chapter VI: Chemical and structural composition of the fuel; Chapter VII: Fuel fragmentation and density; Chapter VIII: Phenomena at the pellet periphery. Formation, characteristics and structure of the rim.Chemical interaction between pellet and cladding; Chapter IX: Location of fission gases and volatile fission products; Chapter X: Review, lessons and predictions. (authors)

  11. The nuclear installations dismantling and the management of radioactive wastes; Le demantelement des installations nucleaires et la gestion des dechets radioactifs

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-01-15

    As other industrial activities, the nuclear industry causes risks. The risks bound to the dismantling operations are known and controlled. After a presentation of the dismantling and radioactive wastes challenge, this document proposes recommendations based on the first experiences of dismantling and wastes storage. It aims then to answer to the questions relative to the cost and the financing of the operations. Finally it wonders on the public information modalities. (A.L.B.)

  12. Ageing of cable insulators made of polyethylene in nuclear environment; Vieillissement d'isolants de cables en polyethylene en ambiance nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Khelidj, N

    2006-10-15

    This thesis deals with lifetime prediction for polyethylene in nuclear environment. It is mainly characterised by the search for a non empirical solution. We have tried to elaborate a model describing the polymer evolution (including the skin-core heterogeneity due to the kinetic control of oxidation by oxygen diffusion) at any temperature between ambient and the melting point of the polymer, and at any dose rate between 0 and 1 kGy.h-1, with lifetimes extending to several decades of years. The main difficulty was to take into account the dual character of initiation which results from the combination of polymer radiolysis and hydroperoxide thermal decomposition. The problem was resolved considering first the asymptotic regimes where one initiation process can be neglected relatively to the other one. The kinetic parameters specific to those regimes being identified, we have built a numerical model including all the processes. In the case of un-stabilised polyethylene, this model displays excellent predictive qualities, as well in lifetime, as in thickness distribution of oxidation products. The study of stabilised polyethylenes was then initiated with samples respectively stabilised by a hindered phenol, and a thio-diester. In the case of phenol, the study of consumption kinetics reveals the existence of complex mechanisms, especially the existence of a 'reservoir effect' linked to the presence of a separated phase of phenol in excess. A kinetic model has been proposed, but we still do not know how the results can be generalised to other phenolic stabilizers. (author)

  13. The 'humane performance' project for the French nuclear power plants; Le projet performance humaine au sein du parc nucleaire francais

    Energy Technology Data Exchange (ETDEWEB)

    Theurier, J.P. [Electricite de France (EDF/DPN/UNIE), 93 - Saint-Denis (France)

    2010-05-15

    In 2006 EDF launched a project called 'human performance' whose aim was to make work practices of 37.000 nuclear workers evolve towards more efficiency and more rigor. In fact the aim is to break the professional routines that are often sources of mistakes and make workers more able to summon up all their capabilities during an intervention. The most innovative step in this project is the implementation of the 'reliability path'. This path is in fact a mental preparation before the intervention and an acute awareness of what is being done during the intervention. A debriefing phase follows the intervention in which the worker reviews the intervention and suggests the points to improve. (A.C.)

  14. Managing radioactive waste produced at secret basic nuclear facilities; La gestion des dechets radioactifs issus des installations nucleaires de base secretes

    Energy Technology Data Exchange (ETDEWEB)

    Elluard, M.P. [Chef de projet a l' Autorite de Surete Nucleaire de Defense - Ministere de la Defense, 75 - Paris (France)

    2011-02-15

    The Delegate for Nuclear Safety and Radiation Protection for National Defence Installations and Activities (DSND) is attached to the French Minister of Defence and the Minister for Industry. The DSND's task is to study and propose to the relevant ministers the specific nuclear safety and radiation protection policy applicable to secret basic nuclear installations (SBNI) classified as such by decision of the Prime Minister. He supervises application of this policy. The DSND draws up the regulations relative to managing waste present within the boundaries of SBNIs in accordance with the guidelines set out in the Environmental Code. Thus, the Title VI of the Order of 26 September 2007 setting out the general technical regulations designed to prevent and limit pollution and external risks resulting from the operation of secret basic nuclear installations recalls the requirement for all SBNI operators to take every precaution necessary to reduce the volume and the radiological, chemical and biological toxicity of all waste produced at its installations and to optimise its management, whilst giving priority to recycling and processing rather than final disposal, which is to be reserved for final waste. The DSND supervises and monitors safety at every stage in radioactive waste management: production, processing, storage, transportation and disposal. (author)

  15. The role of the nuclear industry in the Brazil's electricity system; Le role du nucleaire dans le systeme electrique Bresilien

    Energy Technology Data Exchange (ETDEWEB)

    Pinheiro Da Silva, O.L.; Dos Santos Guimaraes, L. [Electronuclear - Electrobras Termonuclear (Brazil)

    2009-11-15

    No form of energy - renewable, clean or whatever other name it is given - can constitute the sole solution to the challenge of ensuring electric power supplies that are compatible with a country's economic and social growth. Brazilian consumption and installed electrical generation capacity per capita are stiller low, below the world average - that is the main factor that needs to be stressed. The catch-up requires that the country benefit it as much as possible and as soon as possible from all available sources to increase electricity generation capacity allowing increased consumption compatible with the way of life that Brazilians aspire to. A country's electrical system planning requires the efficient management of a diversified array of energy sources. Regarding Brazil, hydro power will be or several decades the main component in its electricity generation portfolio. Nonetheless, it already needs to be complemented by thermal sources - uranium, coal, bio-mass, natural gas and petroleum-based oil - in that order of importance, taking account of such actors as availability on the home territory, costs, environmental impacts and uses in other applications. (authors)

  16. Energy policy and challenges: which part for the nuclear energy; Politique et defis energetiques: quel role pour l'energie nucleaire?

    Energy Technology Data Exchange (ETDEWEB)

    Bouchard, J

    2004-07-01

    This document provides many data and charts on the energy domain: energy consumption, energy demand, the reserves, the climatic changes, the renewable energies, the energy cost, the radioactive wastes management, the new nuclear technology. (A.L.B.)

  17. Evaluation of the impact and the releases of operating nuclear facilities; Evaluation de l'impact et des rejets des installations nucleaires en fonctionnement normal

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    The monitoring of nuclear installations releases, the associated impacts evaluation and the radiation monitoring of the environment are of an increase interest since the last ten years. Theses two days, organized by the environment section of the SFRP (French Society of Radiation Protection), aim to discuss the following topics: the development of the methods to improve radioactive elements and toxic substances releases in the environment; the structure of the environment control and the objectives of this control; the association of the local actors to the releases monitoring and to the environment control; the perspectives of evolution in matter of nuclear facilities releases management. (A.L.B.)

  18. Electricity of nuclear origin and primary and end-use energy consumption; Electricite nucleaire et consommation d'energie primaire et finale

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    In France, the electricity of nuclear origin corresponds to about 40% of the primary energy consumption, while electricity as a whole represents about 23% of the end-use energy. This apparent paradox can be explained by 2 methodological points: 1 - the primary energy consumption, in the case of electricity, includes only the energy of nuclear, hydraulic, wind, photovoltaic and geothermal origin. On the other hand, the end-use energy consumption includes all forms of electricity consumed, i.e. the electricity of both primary and secondary origin. 2 - By international convention, the coefficients used to convert MWth into tpe (ton of petroleum equivalent) can change according to two factors: the power generation source and the type of kWh considered, either produced or consumed. The coexistence of different concepts and definitions is justified by the different usages made with them. Therefore, calculations referring to different definitions or equivalence coefficients are not immediately comparable. (J.S.)

  19. 7th international conference on Nuclear microprobe technology and applications; 7. conference internationale sur la technologie et les applications des microsondes nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-07-01

    This colloquium gives an up-to-date report on the continuously advancing applications and development of microbeam technology. It presents abstracts and oral contributions in the following domains: microprobes facilities, analysis techniques, imaging techniques, micro-ion beam modification of materials, microelectronics, applications in Material Sciences in Biology in Medicine in earth and planetary Sciences in environment in art in archaeology, alternative techniques. (A.L.B.)

  20. Inventory of chemical releases of nuclear installations in the North-Cotentin; Inventaire des rejets chimiques des installations nucleaires du Nord-Cotentin

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-05-15

    The nuclear installations concerned by this study are Cogema La Hague, the Flamanville nuclear power plant, the Manche plant and the National Navy of Cherbourg.The objective followed by the ' source term ' work group has consisted in counting and examining the whole of existing measures relative to the releases of chemical substances in the liquid and gaseous effluents. Then because of the lack of measures for the operation first years of installations, the work group has estimated the order of magnitude of these chemical releases (essentially for Cogema La Hague). This report presents a review of the literature looking at the background levels of chemicals in different environmental compartments: air, soil, plants and animals products. these values have been summarized here to be available for comparisons with concentrations input by the North Cotentin nuclear installations, calculated by the G.R.N.C. (radioecology group of Nord Cotentin)

  1. Present day situation and perspectives of the nuclear sector in the USA; La situation actuelle et les perspectives du secteur nucleaire aux Etats-Unis

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    With the restart-up of Browns Ferry NPP on May 22, 2007, the US nuclear park comprises now 104 reactors in operation: 35 BWR-type and 69 PWR-type. NPPs are present in only 31 states and mainly in the eastern half of the country. Nuclear energy represents 20% of the US energy mix (coal: 50%, gas: 19%, hydro-power: 6%, petroleum: 3% and other renewable energies: 2%). The highest average availability rate in power generation is reached by nuclear energy (89.9%). The nuclear power generation reached 787.2 TWh in 2006, i.e. the second best result after the 2004 record (788.5 TWh). This document presents also some nuclear safety and radioprotection indicators (number of unplanned outages, failures, injury frequency rate), the programme of licenses extension, the permissions for power increase, the demands for design certification, for early site permit, and for combined construction permit and operating license. The regulation may be different from one state to the other and sometimes not favorable to a re-launch of nuclear energy. The situation of each state in this domain is presented in appendix. (J.S.)

  2. Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse - CSNSM/Centre for nuclear and mass spectroscopy, Activity Report 1995-1997

    International Nuclear Information System (INIS)

    2003-01-01

    The Centre for nuclear and mass spectroscopy (CSNSM) is a CNRS (National Centre for Scientific Research) laboratory affiliated with Paris-Sud University. The CSNSM is involved in pluri-disciplinary activities covering various scientific domains: Nuclear Structure (SNO), Nuclear Astrophysics (AN), Solid State Astrophysics (AS), Solid State Physics (PS) and Chemical Physics of Irradiation. This document presents the activity of the Centre during the 1995-1997 years: 1 - Nuclear structure: structure of first well states, superdeformation, high-spin state populations of stable or neutron-rich nuclei, high-k isomers physics, theoretical works, technical developments; 2 - Nuclear astrophysics; 3 - Basic symmetries; 4 - Accelerator-based mass spectroscopy; 5 - Solid State Astrophysics; 6 - Physics and Chemistry of Irradiation; 7 - Solid State Physics; 8 - SEMIRAMIS (ion source and ion beam handling); 9 - Computer Department; 10 - Electronics Group; 11 - Mechanics Department; 12 - Permanent training; 13 - Health and safety; 14 - Seminars and communications; 15 - Dissertations; 16 - Publications; 17 - Staff

  3. Critical analysis of major incidents risks in civil nuclear energy; Analyse critique des risques d'incidents majeurs dans l'energie nucleaire civile

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-09-01

    The differences existing between the PWR type reactors and the RBMK type reactors are explained as well as the risk associated to each type when it exists. The Ines scale, tool to give the level of an accident gravity comprises seven levels, the number seven is the most serious and corresponds to the Chernobyl accident; The number zero is of no consequence but must be mentioned as a matter of form. The incidents from 1 to 3 concern increasing incidents, affecting the nuclear power plant but not the external public. The accidents from 4 to 7 have a nature to affect the nuclear power plant and the environment. An efficient tool exists between nuclear operators it is made of the reports on incidents encountered by close reactors. Two others type reactors are coming, the high temperature type reactors and the fast neutrons reactors. different risks are evoked, terrorism, proliferation, transport and radioactive wastes. (N.C.)

  4. Report on the possibilities of long-term storage of irradiated nuclear fuels; Rapport sur les possibilites d'entreposage a long terme de combustibles nucleaires irradies

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    This report aims at giving a legislative aspect to the many rules that govern the activities of the back-end of the fuel cycle in France. These activities concern the unloading of spent nuclear fuels, their reprocessing, storage, recycling and definitive disposal. The following points are reviewed and commented: the management of non-immediately reprocessed fuels (historical reasons of the 'all wastes reprocessing' initial choice, evolution of the economic and political context, the future reprocessing or the definitive disposal of spent fuels in excess); the inevitable long-term storage of part of the spent fuels (quantities and required properties of long-term stored fuels, the eventuality of a definitive disposal of spent fuels); the criteria that long-term storage facilities must fulfill (confinement measures, reversibility, surveillance and control during the whole duration of the storage); storage concept to be retained (increase of storage pools capacity, long-term storage in pools of reprocessing plants, centralized storage in pools, surface dry-storage on power plant sites, reversible underground storage, subsurface storage and storage/disposal in galleries, surface dry-storage facilities); the preliminary studies for the creation of long-term storage facilities (public information, management by a public French organization, clarifying of the conditions of international circulation of spent fuels); problems linked with the presence of foreign spent fuels in France (downstream of the reprocessing cycle, foreign plutonium and wastes re-shipment); conclusions and recommendations. (J.S.)

  5. Nuclear Safety and Radiation Protection in France in 2005; La surete nucleaire et la radioprotection en France en 2005. Dossier de presse

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-04-15

    In 2005, the Asn pursued its significant investment in radiation protection and reaffirms its ambition to become as efficient in radiation protection as it is in nuclear safety as of 2009. 2005 was a year of great progress for the Asn as it consolidated its organisation and working methods, in accordance with the 2005-2007 strategic plan it set for itself. The Asn continued progress in the field of radiation protection has given rise to various new regulations to improve the legislative and regulatory framework in this area. The Asn plans to step up its efforts to ensure better monitoring of patient exposure to ionizing radiation and to provide better management of radon-related risks, particularly in housing. Fully aware that its newfound power in this area requires outside evaluation, the Asn has asked the International Atomic Energy Agency (IAEA) to organize an I.R.R.S. (Integrated Regulatory Review Service) assignment consisting of a peer-conducted audit. The IAEA has confirmed that this audit will take place in November 2006. (N.C.)

  6. Energy security, sustainable development, which place for the Nuclear in the world?; Securite energetique, developpement durable, quelle place pour le nucleaire dans le monde?

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-07-01

    Facing the increase of the energy consumption and the necessity of the greenhouse gases emission decrease, the authors define the role of the nuclear energy in a policy of a sustainable development. They recall the leadership part of the France in the nuclear research and development and the channel of the nuclear production. The second part of the paper proposes sheets of countries energy policy and nuclear program situation: USA, Europe, Russian, China and India. (A.L.B.)

  7. Annual report ''nuclear safety in France''; Le rapport annuel ''la surete nucleaire en France''

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    This document is the 2001 annual report of the French authority of nuclear safety (ASN). It summarizes the highlights of the year 2000 and details the following aspects: the nuclear safety in France, the organization of the control of nuclear safety, the regulation relative to basic nuclear facilities, the control of facilities, the information of the public, the international relations, the organisation of emergencies, the radiation protection, the transport of radioactive materials, the radioactive wastes, the PWR reactors, the experimental reactors and other laboratories and facilities, the nuclear fuel cycle facilities, and the shutdown and dismantling of nuclear facilities. (J.S.)

  8. Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse - CSNSM/Centre for nuclear and mass spectroscopy, Activity Report 1992-1994

    International Nuclear Information System (INIS)

    2003-01-01

    The Centre for nuclear and mass spectroscopy (CSNSM) is a CNRS (National Centre for Scientific Research) laboratory affiliated with Paris-Sud University. The CSNSM is involved in pluri-disciplinary activities covering various scientific domains: Nuclear Structure (SNO), Nuclear Astrophysics (AN), Solid State Astrophysics (AS), Solid State Physics (PS) and Chemical Physics of Irradiation. This document presents the activity of the Centre during the 1992-1994 years: 1 - Nuclear structure; 2 - Nuclear astrophysics; 3 - Basic symmetries; 4 - Accelerator-based mass spectroscopy; 5 - Solid State Astrophysics; 6 - Physics and Chemistry of Irradiation; 7 - Solid State Physics; 8 - SEMIRAMIS (ion source and ion beam handling); 9 - Computer Department; 10 - Electronics Group; 11 - Mechanics Department; 12 - Permanent training; 13 - Health and safety; 14 - Seminars; 15 - Dissertations; 16 - Publications; 17 - Staff

  9. Strategy for nuclear wastes incineration in hybrid reactors; Strategies pour l'incineration de dechets nucleaires dans des reacteurs hybrides

    Energy Technology Data Exchange (ETDEWEB)

    Lelievre, F

    1998-12-11

    The transmutation of nuclear wastes in accelerator-driven nuclear reactorsoffers undeniable advantages. But before going into the detailed study of a particular project, we should (i) examine the possible applications of such systems and (ii) compare the different configurations, in order to guide technological decisions. We propose an approach, answering both concerns, based on the complete description of hybrid reactors. It is possible, with only the transmutation objective and a few technological constraints chosen a posteriori, to determine precisely the essential parameters of such reactors: number of reactors, beam current, size of the core, sub-criticality... The approach also clearly pinpoints the strategic decisions, for which the scientist or engineer is not competent. This global scheme is applied to three distinct nuclear cycles: incineration of solid fuel without recycling, incineration of liquid fuel without recycling and incineration of liquid fuel with on-line recycling; and for two spectra, either thermal or fast. We show that the radiotoxicity reduction with a solid fuel is significant only with a fast spectrum, but the incineration times range from 20 to 30 years. The liquid fuel is appropriate only with on-line recycling, at equilibrium. The gain on the radiotoxicity can be considerable and we describe a number of such systems. The potential of ADS for the transmutation of nuclear wastes is confirmed, but we should continue the description of specific systems obtained through this approach. (author)

  10. The problem of the long-term management of nuclear wastes; Le probleme de la gestion a long terme des dechets nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    The law from December 30, 1991, precisely defines 3 axes of researches for the management of high level and long-lived radioactive wastes: separation/transmutation, surface storage and underground disposal. A global evaluation report about these researches is to be supplied in 2006 by the French government to the Parliament. A first synthesis of the knowledge gained after 14 years of research has led the national commission of the public debate (CNDP) to organize a national debate about the general options of management of high-level and long-lived radioactive wastes before the 2006 date line. The debate comprises 4 public hearings (September 2005: Bar-le-Duc, Saint-Dizier, Pont-du-Gard, Cherbourg), 12 round-tables (October and November 2005: Paris, Joinville, Caen, Nancy, Marseille), a synthesis meeting (December 2005, Dunkerque) and a closing meeting (January 2006, Lyon). This document is the proceedings of the synthesis meeting of Dunkerque. It comprises an introduction which recalls the stakes and modalities of the debate, followed by a talk from the president of the national association of local commissions for nuclear activities information (ANCLI), and three synthesis talks from the particular commission of the public debate, the ministry of industry, and the committee of experts and counter-experts. These proceedings end with some questions and answers with the public. A slide presentation by B. Dessus about the progresses made in the debate on nuclear wastes management is attached to the document. (J.S.)

  11. Development of a Laue lens for nuclear astrophysics; Developpement d'une lentille de Laue pour l'astrophysique nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Barriere, N

    2008-04-15

    The Laue lenses we study focuses in the domain of 0.1-1 MeV thanks to Bragg diffraction in the volume of a large number of small crystal tiles. The focal length of a typical Laue lens system is of the order of 100 m. This requirement calls for two formation flying satellites maintaining lens and detector at the focal distance. The major breakthrough of Laue lenses is to decouple collecting area from detector area. Concentrating a signal from the large area of a Laue lens onto a small focal spot dramatically increases the signal over background ratio with respect to present technologies. Here is the reason for the long awaited leap in sensitivity. The objective of the present thesis was to improve the concept, finding viable technical solutions towards a future space mission. Two aspects of the lens development have been highlighted in this thesis: the first one is an analytical model of the lens that is used to calculate and improve the performance of a certain configuration, the second aspect concerns the search and the characterization of diffracting media of interest. The lens model developed relies on a fast semi-analytical simulation library, permitting to build several design- and optimisation-tools. For the configuration of a given lens, this code computes the resulting effective area and point spread function in a handful of seconds. The model helps finding lens configurations (mass, pack ratio of the lens rings,...) which are automatically refined to match with effective area and energy coverage constraints. These tools have been used to investigate various design aspects, such as the influence of focal length, size, mosaic spread, structure and materials of crystals, etc... The central evaluation criterion in the model is a figure of merit, based on the compactness of the focal spot and the intensity of the collected signal. The second part of this work addresses the actual search and characterization of crystals potentially interesting for Laue lenses. Copper and germanium mosaic crystals, silicon-germanium alloys with a concentration gradient, and stacks of either silicon or germanium wafers have been studied in various facilities. (author)

  12. High-resolution nuclear magnetic resonance of quadrupolar nuclei in solids; Resonance magnetique nucleaire haute-resolution des noyaux quadrupolaires dans les solides

    Energy Technology Data Exchange (ETDEWEB)

    Charpentier, Th

    1998-10-23

    After a brief review of existing methods in high-resolution NMR of quadrupolar nuclei, the manipulation of multi-quantum coherencies by radiofrequency pulses is studied. Results are then applied to the determination of optimal conditions for performing the recently introduced multiple-quantum magic-angle experiment (MQMAS). The principles of this new method, the different pulse sequences and the data processing are described in detail. Applications on aluminum hydrates and cement pastes show the improvements of this new technique over the previous ones. In a second part, after an investigation of the Floquet theory, a new formalism has been devised for studying the behavior of a spin submitted to a strong quadrupolar interaction and radiofrequency field in a rotating sample. This formalism is then applied to a quantitative study of the phenomenon of rotational induced adiabatic transfer of coherencies (RIACT). The extension of our theoretical approach to two-dimensional experiments provides a powerful tool for quantitative analyses of MQMAS spectra. Agreement between experimental data and simulations demonstrates the reliability of our approach. Preliminary results concerning the application of MQMAS spectroscopy, using our simulation programs, to structural study of amorphous materials are presented. The third and last part presents a theoretical and experimental investigation of dipolar order in a rotating sample. Two theoretical models are described, the first for the slow spinning speed regime where an adiabatic approximation can be made, and the second for the fast spinning speed regime. (author)

  13. High spin exotic states and new method for pairing energy; Etats exotiques a hauts spins et nouvelle methode pour l`energie d`appariement nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Molique, H.

    1996-01-19

    We present a new method called `PSY-MB`, initially developed in the framework of abstract group theory for the solution of the problem of strongly interacting multi-fermionic systems with particular to systems in an external rotating field. The validity of the new method (PSY-MB) is tested on model Hamiltonians. A detailed comparison between the obtained solutions and the exact ones is performed. The new method is used in the study of realistic nuclear Hamiltonians based on the Woods-Saxon potential within the cranking approximation to study the influence of residual monopole pairing interactions in the rare-earth mass region. In parallel with this new technique we present original results obtained with the Woods-Saxon mean-field and the self-consistent Hartree-Fock approximation in order to investigate such exotic effects as octupole deformations and hexadecapole C{sub 4}-polarizing deformations in the framework of high-spin physics. By developing these three approaches in one single work we prepare the ground for the nuclear structure calculations of the new generation - where the residual two-body interactions are taken into account also in the weak pairing limit. (author). 2370refs.

  14. The nuclear energy of the future: the researches and the objectives; L'energie nucleaire du futur: quelles recherches pour quels objectifs?

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    Today energy problems are global problems. That is why the new generation of energy production by nuclear power must be realized basely on serious forecasts at a world scale. The nuclear energy presents many trumps for an energetic answer, at long-dated, concerning the environment and the resources. This will be for two main conditions: the ability to answer the public opinion anxiety and the development of new systems more high- performance in terms of safety and economy in the framework of the sustainable development and the non proliferation policy. These subjects are at the earth of the CEA missions. This document proposes a detailed presentation of the nuclear origins, the fuel and its cycle, the radioactive wastes and their management,the dismantling and the decommissioning of the nuclear installations, the challenges of the nuclear safety, the energy in the world, the nuclear economy, the nuclear in the world, the researches of the future, the third generation reactors, the research on radioactive wastes, the fuel cycle of the nuclear systems of the future, the uranium resources, the generation four forum, the gas coolant reactors, the thorium, hybrid systems and the thermonuclear fusion. (A.L.B.)

  15. Lessons of the Indo-Pakistani example for nuclear deterrence. Summary; Lecons de l'exemple Indo-Pakistanais pour la dissuasion nucleaire. synthese

    Energy Technology Data Exchange (ETDEWEB)

    Tertrais, B

    2003-10-15

    Southern Asia has similar characteristics as those of central Europe during the cold war. The arguments suggesting that the nuclear dissuasion cannot work between India and Pakistan are not convincing. A deep analysis of the Indo-Pakistan 'nuclear crises' is necessary to learn lessons from the south-Asian example. This analysis suggests that both parties have learnt the dissuasion rules in an empirical way since 1990 and now have more certitudes about their options and the related risks in a bilateral nuclear environment. In particular, it appears that the line of control (LoC) is now well identified, both by Islamabad and New Delhi, as one of those 'red lines' the crossing of which would lead the conflict towards a new dimension. (J.S.)

  16. The bad debt of nuclear responsibility; L'heritage empoisonne du nucleaire - De la conduite a suivre pour reduire les risques

    Energy Technology Data Exchange (ETDEWEB)

    Haverkamp, J. [Greenpeace Europe (France)

    2010-11-15

    Nuclear regulation plays an important role in keeping the visible and invisible threats of radioactivity at bay. This article argues that the largest gains in nuclear safety can be made if nuclear activities with economically, socially and environmentally viable alternatives (such as nuclear energy and nuclear weapons) are phased out - similarly to what has been done for toxic substances. Unless this takes place, the legacy of radioactive waste for future generations will only increase. In this respect, the article highlights the importance of accountability, independence and transparency of nuclear regulators to contain the risks stemming from radioactivity. In the interest of safety, other uses of nuclear technology should, as a rule, apply the best available technology and the best regulatory practice. As is made clear in the article, the EURATOM Nuclear Safety Directive, adopted in 2009, hardly addresses any of these issues. The article ends on a set of demands from Greenpeace to meet the challenges posed by nuclear safety, concluding that there is still a long way to go before the sector can be considered even reasonably safe. (author)

  17. Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse - CSNSM/Centre for nuclear and mass spectroscopy, Activity Report 1985-1986-1987

    International Nuclear Information System (INIS)

    2003-01-01

    The Centre for nuclear and mass spectroscopy (CSNSM) is a CNRS (National Centre for Scientific Research) laboratory affiliated with Paris-Sud University. The CSNSM is involved in pluri-disciplinary activities covering various scientific domains: Nuclear Structure (SNO), Nuclear Astrophysics (AN), Solid State Astrophysics (AS), Solid State Physics (PS) and Chemical Physics of Irradiation. This document presents the activity of the Centre during the 1985-1986-1987 years: 1 - Teams presentation; 2 - Abstracts: On the borderline of spectroscopy; Atomic spectroscopy and low-energy low-spin nuclear structure; high-energy high-spin nuclear structure; Theories and models; Nuclear astrophysics; Accelerator-based mass spectroscopy; Solid State Physics; Study of charged particles irradiation effects in astrophysics, geophysics and material sciences; Technical developments for the RF mass spectrometer and for Obelix; Technical developments for ion beams; Technical developments in electronics and their applications; CNSM's Computer Department; Developments in cryogenics; 3 - Staff and publications

  18. The sea water desalination by the nuclear reactors; Le dessalement de l'eau de mer par les reacteurs nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Nisan, S. [CEA Cadarache, Dir. du Developpement et de l' Innovation Nucleares DDIN, 13 - Saint-Paul-lez-Durance (France)

    2002-07-01

    This document underlines the importance of water shortage in many areas in the world in the future. The water sea desalination can be a efficient solution to this problem. The desalination methods are presented. In this context the desalination reactors appear as a competitive solution, facing the fossil energies systems not only for the simultaneous electric power and drinking water production, but also for the minimization of greenhouse gases. (A.L.B.)

  19. A contribution to the theory of nuclear matter at low density; Contribution a la theorie de la matiere nucleaire a basse densite

    Energy Technology Data Exchange (ETDEWEB)

    Madan, L. M. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1961-07-01

    A combination of the variational method using special momentum conserving canonical transformations and the method of resummation of the infinite series of dominating terms in the low density limit is used to study a strongly interacting N particle system. Under the hypothesis that the excitation energy E{sub k} is convex and everywhere positive after the special canonical transformation minimising the average value of the energy has been performed, we have shown that the t-matrix obtained by the summation of the ascending ladders is free from all singularities. Some particular examples are studied in detail. (author) [French] Une combinaison de la methode variationnelle utilisant des transformations canoniques speciales conservant l'impulsion, et de la methode de resommation infinie des termes dominants a basse densite est utilisee pour etudier l'etat fondamental d'un systeme a N particules en interaction forte. Sous reserve de l'hypotnese que l'energie d'excitation E{sub k} est convexe et partout positive, nous avons demontre la regularite de la matrice t obtenue en resommant des echelles montantes une fois effectuee la transformation canonique speciale qui minimise la valeur moyenne de l'energie. Quelques exemples particuliers sont etudies en detail. (auteur)

  20. Research means to back the development of nuclear reactors; Les moyens de recherche en support a l'evolution des reacteurs nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    After 50 year long feedback experience on nuclear reactor operations it is legitimate to wonder whether experimental facilities used to support nuclear power programs are still necessary. The various participants of this conference said yes for mainly 4 reasons: -) to validate the extension of the service life of a reactor without putting at risk its high safety standard, -) to give the reactor more flexibility to cope with the power demand, -) to confront the results given by computerized simulations with experimental data, and -) to qualify the nuclear systems of tomorrow. (A.C.)

  1. The nuclear complex. Bonds between the civil and the military atom; Le complexe nucleaire. Des liens entre l'atome civil et l'atome militaire

    Energy Technology Data Exchange (ETDEWEB)

    Barrillot, B

    2005-02-01

    Facing the nuclear armament of Iran, this book deals with the nonproliferation policy in the world and more specially in France. It shows how the development of the civil nuclear is holding up the nuclear disarmament. (A.L.B.)

  2. Correlations between nuclear data and integral slab experiments: the case of hafnium; Correlations entre donnees nucleaires et experiences integrales a plaques: le cas du hafnium

    Energy Technology Data Exchange (ETDEWEB)

    Palau, J.M

    1999-07-01

    The aim of this work was to evaluate how much integral slab experiments can both reduce discrepancies between experimental results and calculations, and improve the knowledge of hafnium isotopes neutronic parameters by an adapted sensitivity and uncertainty method. A statistical approach, based on the generalized least squares method and perturbation theory, has been incorporated into our calculation system in order to deduce microscopic cross-section adjustments from observed integral measurements on this particular 'mock-up' reactor.In this study it has been established that the correlations between integral parameters and hafnium capture cross-sections enable specific variations in the region of resolved resonances at the level of multigroup and punctual cross-sections recommended data (JEF-2.2 evaluation) to be highlighted. The use of determinist methods together with Monte Carlo- type simulations enabled a depth analysis of the modelling approximations to be carried out. Furthermore, the sensitivity coefficient validation technique employed leads to a reliable assessment of the quality of the new basic nuclear data. In this instance, the adjustments proposed for certain isotope {sup 177}Hf resonance parameters reduce, after error propagation, by 3 to 5 per cent the difference between experimental results and calculations related to this absorbent's efficiency. Beyond this particular application, the qualification methodology integrated in our calculation system should enable other basic sizing parameters to be treated (chemical / geometric data or other unexplored nuclear data) to make technological requirements less stringent. (author)

  3. The evaluation of the nuclear facilities safety at the CEA from 1999 to 2001; Le bilan de la surete des installations nucleaires du CEA du 1999 a 2001

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-11-01

    The aim of this document is the presentation of an evaluation of the problems and the safety methods in the concerned period. The first chapter presents the nuclear safety in the CEA. The second chapter is devoted to the organization and the quality for the safety: liabilities, audits, relations with the safety authorities and with the public. The chapters three and four deal respectively with the methodological and technical abilities supporting the exploitation teams and with the nuclear safety projects. The last chapter presents the experiments and events from 1999 to 2001. (A.L.B.)

  4. Modelling of the spallation reaction: analysis and testing of nuclear models; Simulation de la spallation: analyse et test des modeles nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Toccoli, C

    2000-04-03

    The spallation reaction is considered as a 2-step process. First a very quick stage (10{sup -22}, 10{sup -29} s) which corresponds to the individual interaction between the incident projectile and nucleons, this interaction is followed by a series of nucleon-nucleon collisions (intranuclear cascade) during which fast particles are emitted, the nucleus is left in a strongly excited level. Secondly a slower stage (10{sup -18}, 10{sup -19} s) during which the nucleus is expected to de-excite completely. This de-excitation is performed by evaporation of light particles (n, p, d, t, {sup 3}He, {sup 4}He) or/and fission or/and fragmentation. The HETC code has been designed to simulate spallation reactions, this simulation is based on the 2-steps process and on several models of intranuclear cascades (Bertini model, Cugnon model, Helder Duarte model), the evaporation model relies on the statistical theory of Weiskopf-Ewing. The purpose of this work is to evaluate the ability of the HETC code to predict experimental results. A methodology about the comparison of relevant experimental data with results of calculation is presented and a preliminary estimation of the systematic error of the HETC code is proposed. The main problem of cascade models originates in the difficulty of simulating inelastic nucleon-nucleon collisions, the emission of pions is over-estimated and corresponding differential spectra are badly reproduced. The inaccuracy of cascade models has a great impact to determine the excited level of the nucleus at the end of the first step and indirectly on the distribution of final residual nuclei. The test of the evaporation model has shown that the emission of high energy light particles is under-estimated. (A.C.)

  5. Study of nuclear glasses alteration gel and synthesis of some model gels; Etude du gel d`alteration des verres nucleaires et synthese de gels modeles

    Energy Technology Data Exchange (ETDEWEB)

    Ricol, S.

    1995-10-05

    This work deals with the general problem of alteration of the reference nuclear glass R7T7. Attention is paid particularly to the altered layer formed at the glass surface during alteration process. In opposition to previous works, related essentially to glass dissolution kinetics based on chemical analyses of lixiviated elements, this thesis deals with alteration problems through structural studies of the reference glass and derived gel. This approach allows the determination of mechanisms for the gel formation and a better understanding of the behaviour of glasses towards lixiviation. Both approaches appeared complementary. Based on several spectroscopic techniques, this work showed the particular role of cations such as calcium, zirconium and iron. Studies of silica-based synthetic gels showed the synergic effect of formers cation and of one highly coordinated cation. The variation of the wavenumber related to Si-O-Si asymmetric stretching vibration can be correlated to O/Si ratio for ternary systems Si/Na/Zr. On the contrary, the Si losses of the materials depend on the number of non-bridging oxygen atoms. In the perspective of long-term behaviour, the alteration gel presents better characteristics than initial glass. It is therefore a highly stable material in static conditions. In the same way, synthetic gels are materials with very low solubilities (much lower than the alteration gel) and could be used as confining matrices. (authors). refs., 71 figs., 37 tabs.

  6. The opening of electricity markets: the stakes for the nuclear energy; L'ouverture des marches de l'electricite: les enjeux pour le nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Maillard, M. [Ministere de l' Economie, des Finances et de l' Industrie, 75 - Paris (France). Direction Generale de L' Energie et des Matieres Premieres

    2002-07-01

    This article is a reprint of the opening talk of M. Maillard, general director of DGEMP (general direction of energy and raw materials, French ministry of economy, finances and industry), given at the 2002 annual meeting of the French society of nuclear energy (SFEN). In his talk, M. Maillard presents, first, the international context of the liberalization of electricity markets (the lessons learnt after the Californian crisis, the situation of the existing nuclear park, the questions relative to the nuclear revival, the conditions of a conservation of the nuclear option beyond the existing facilities). Then he analyzes the French situation and its specificities (pluri-annual planning of investments, mastered liberalization and competitiveness of the nuclear energy, preparation of future date-lines in agreement with the decommissioning of the oldest PWR reactors). (J.S.)

  7. Place of the nuclear medicine in the clinical development of the gene therapy; Place de la medecine nucleaire dans le developpement clinique de la therapie genique

    Energy Technology Data Exchange (ETDEWEB)

    Crochet, T. [Montpellier-1 Univ., 34 (France); Vis, J. de [Centre Hospitalier Universitaire, Hopital Saint Eloi, Institut de Recherche en Biotherapie, 34 - Montpellier (France); Vincent, D. [Centre Hospitalier Universitaire de Nimes, Service de Medecine Interne, Hopital Caremeau, 30 - Nimes (France); Zanca, M. [Centre Hospitalier Universitaire, Hopital Guy de Chauliac, Service de Medecine Nucleaire, 34 - Montpellier (France)

    2006-10-15

    Although gene therapy has been proposed first for genetic diseases, its concept has been extended to many acquired diseases, owing to a better understanding of pathology at a molecular level. Overall, very few trials have shown to be efficient, and safety concerns have emerged, as a result of several patients deaths. There is a need for new techniques able to improve both the knowledge of the therapeutic gene fate once administered and the early detection of events likely to lead to serious adverse events. In vivo imaging of a reporter gene associated with the therapeutic one is certainly the most promising technique for these goals. Among available imaging modalities, nuclear imaging is the most likely to be applied to patients. This review begins with a summary of current knowledge about the steps that a therapeutic gene has to cross from vector delivery to appropriate expression in target cells. We show how gene imaging could allow to investigate many pitfalls of trials by providing a better understanding of these steps in patients. The reporter genes available for nuclear imaging are presented in the second section, through animal studies. Then, relevant examples of clinical trials are presented. These include cancer (suicide gene therapy and adoptive immunotherapy), ischemic heart diseases and cystic fibrosis. The results are commented with emphasis on the role of nuclear imaging to address the questions raised by these studies, and imaging studies carried out on animals or patients for the corresponding diseases or organs are presented. The results obtained in animal studies warrant the introduction of gene imaging in clinical trials. (authors)

  8. The nuclear safety and the radiation protection in France in 2003; La surete nucleaire et la radioprotection en France en 2003

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-03-15

    Nine points are reviewed: the law project relative to the safety and openness in nuclear field, the safety of the European PWR type Reactor, the priorities in radiation protection, inspection of radiation protection, the surveillance of patients exposure to ionizing radiations, the hot days and dryness of summer 2003 and the functioning of nuclear power plant, the national planning of radioactive waste management, the becoming of high level and years living radioactive waste, the European nuclear policy. (N.C.)

  9. Rehabilitation techniques after a nuclear accident, in agricultural and forest environments: summary of the work conducted at IPSN (Institut de Protection et de Sante Nucleaire) (I)

    International Nuclear Information System (INIS)

    Calmon, P.; Jouve, A.; Maubert, H.

    1996-01-01

    Decontamination techniques, in agricultural and forest environments, in laboratory and in the field in France were studied and some of them were tested in the field at Chernobyl area to assess their efficiency and practical application. In this first paper, the techniques tested at Chernobyl area are presented. The contaminating vegetal network technique and then the use of the turf harvester can reach decontamination factor of 97% for both 137 Cs and 90 Sr. Tree leaves show a high level of interception of the radioactive deposition and wood contamination was caused primarily by leaf transfer during the first year after the accident. Then progressively, most of the forest soil contamination was concentrated in the bed. Removing this bed with a brushing-machine could not reach decontamination efficiencies greater than 30%, due to the weak efficiency of the brush gathering, but the technique can be improved. (Author) 5 tabs., 5 figs., 11 refs

  10. When the inconceivable becomes conceivable. The nuclear crisis in Japan; Quand l'extraordinaire devient ordinaire. A propos de la crise nucleaire au Japon

    Energy Technology Data Exchange (ETDEWEB)

    Gilbert, C.

    2011-01-15

    Two important lessons can be drawn from the Fukushima accident. First, very unlikely facts can happen and secondly even the third economic country in the world had great difficulties to cope with the situation and has shown totally unexpected weaknesses in terms of remedial actions: a large part of these actions were improvised. The second lesson implies that the perfect emergency situation where all is ok and within control seems an utopia. The After-Fukushima period will be marked by this utopia. The second lesson also explains the shift that occurred in the appreciation by the public of the responsibility of the accident: at first, the responsible was the exceptional natural disaster: big earthquake plus tsunami, and little by little as failures occurred in the managing of the emergency situation the responsibility was driven on the plant operator Tepco and the Japanese government. (A.C.)

  11. Some problems on the aqueous corrosion of structural materials in nuclear engineering; Problemes de corrosion aqueuse de materiaux de structure dans les constructions nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Coriou, H.; Grall, L. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1964-07-01

    The purpose of this report is to give a comprehensive view of some aqueous corrosion studies which have been carried out with various materials for utilization either in nuclear reactors or in irradiated fuel treatment plants. The various subjects are listed below. Austenitic Fe-Ni-Cr alloys: the behaviour of austenitic Fe-Ni-Cr alloys in nitric medium and in the presence of hexavalent chromium; the stress corrosion of austenitic alloys in alkaline media at high temperatures; the stress corrosion of austenitic Fe-Ni-Cr alloys in 650 C steam. Ferritic steels: corrosion of low alloy steels in water at 25 and 360 C; zirconium alloys; the behaviour of ultrapure zirconium in water and steam at high temperature. (authors) [French] On presente un ensemble d'etudes de corrosion en milieu aqueux effectuees sur des materiaux utilises, soit dans la construction des reacteurs soit pour la realisation des usines de traitement des combustibles irradies. Les differents sujets etudies sont les suivants. Les alliages austenitiques Fer-Nickel-Chrome: comportement d'alliages austenitiques fer-nickel-chrome en milieu nitrique en presence de chrome hexavalent; Corrosion sous contrainte d'alliages austenitiques dans les milieux alcalins a haute temperature; Corrosion sous contrainte dans la vapeur a 650 C d'alliages austenitiques fer-nickel-chrome. Les aciers ferritiques; Corrosion d'aciers faiblement allies dans l'eau a 25 et 360 C; le zirconium et ses alliages; Comportement du zirconium tres pur dans l'eau et la vapeur a haute temperature. (auteurs)

  12. The nuclear magnetic resonance in endocrinology. Spectroscopy and imaging, present and future. La Resonance Magnetique Nucleaire en Endocrinologie. Spectroscopie et Imagerie, present et avenir

    Energy Technology Data Exchange (ETDEWEB)

    Rossi, M.; Zanca, M. (Hopital Lapeyronie, 34 - Montpellier (FR))

    1990-01-01

    The first part, after a brief historical reminder, gives an oversimplified and non rigorous approach to the Nuclear Magnetic Resonance (NMR) phenomenon; this physical introduction leads the clinician to know the essential about the spectral and imaging techniques in NMR, just to understand what is done... The second part of this paper shows some medical applications of these two aspects of NMR, with help of some examples, taken from the literature, according to what is concerned with endocrinology. Pure bio chemical applications (enzymology), or those concerning isolated (and perfused) organs, or living animals, and even human beings, are numerous and complementary, and there is no doubt that the applications of NMR technologies to medicine will know a promising future.

  13. Coal, an alternative to nuclear power in Europe's energy future; Le charbon, alternative au nucleaire et avenir energetique de l'Europe

    Energy Technology Data Exchange (ETDEWEB)

    Paillard, Christophe-Alexandre [Institut d' etudes politiques de Paris, Sciences Po, 27 rue Saint-Guillaume, 75337 Paris Cedex 07 (France)

    2012-01-15

    The impending demise of nuclear power in several European countries and the projected strong increase in world energy requirements are placing coal in the forefront again. From being the primary energy source in the 19. century, coal is making a quite remarkable come-back in the 21. century with the advent of 'clean coal' and with its dominance in the energy mix of rapidly emerging countries such as China. New mines should open in Europe. In France, the last mine closed in 2004, but there is potential for new ones in the centre of France in areas such as Auvergne and Bourgogne, as well as Midi Pyrenees. These could create new jobs and reduce France's energy dependency. Far from the topical scenes of the past described in books such as Germinal, with its tips and misery, coal is again a promising energy source, with potential to satisfy a rising share of Europe's energy demand. (author)

  14. Technical safety Organisations (TSO) contribute to European Nuclear Safety; Les organismes techniques de surete (TSO) au service de la surete nucleaire europeenne

    Energy Technology Data Exchange (ETDEWEB)

    Repussard, J. [Institut de radioprotection et de surete nucleaire - IRSN, 92 - Clarmart (France)

    2010-11-15

    Nuclear safety and radiation protection rely on science to achieve high level prevention objectives, through the analysis of safety files proposed by the licensees. The necessary expertise needs to be exercised so as to ensure adequate independence from nuclear operators, appropriate implementation of state of the art knowledge, and a broad spectrum of analysis, adequately ranking the positive and negative points of the safety files. The absence of a Europe-wide nuclear safety regime is extremely costly for an industry which has to cope with a highly competitive and open international environment, but has to comply with fragmented national regulatory systems. Harmonization is therefore critical, but such a goal is difficult to achieve. Only a gradual policy, made up of planned steps in each of the three key dimensions of the problem (energy policy at EU level, regulatory harmonization, consolidation of Europe-wide technical expertise capability) can be successful to achieve the required integration on the basis of the highest safety levels. TSO's contribute to this consolidation, with the support of the EC, in the fields of research (EURATOM-Programmes), of experience feedback analysis (European Clearinghouse), of training and knowledge management (European Training and Tutoring Institute, EUROSAFE). The TSO's network, ETSON, is becoming a formal organisation, able to enter into formal dialogue with EU institutions. However, nuclear safety nevertheless remains a world wide issue, requiring intensive international cooperation, including on TSO issues. (author)

  15. Contributions to safety studies for new concepts of nuclear reactors; Contributions aux etudes de surete pour des filieres innovantes de reacteurs nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Perdu, F

    2003-12-01

    The complete study of molten salt reactors, designed for a massive and durable nuclear energy production, must include neutronics, hydraulics and thermal effects. This coupled study, using the MCNP and Trio{sub U} codes, is undertaken in the case of the MSRE (molten salt reactor experiment) prototype. The obtained results fit very well the experiment. Their extrapolation suggests ways of improving the safety coefficients of power molten salt reactors. A second part is devoted to accelerator driven subcritical reactors, developed to incinerate radioactive waste.We propose a method to measure the prompt reactivity from the decay following a neutron pulse. It relies only on the distribution of times between generations, which is a characteristic of the reactor. This method is implemented on the results of the MUSE 4 experiment, and the obtained reactivity is accurate within 5%. (author)

  16. The formal notices of the French authority of nuclear safety; Les mises en demeure de l'autorite de surete nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-07-01

    The French authority of nuclear safety (ASN) publishes on its web site (http://www.asn.gouv.fr) the formal notices and official statements addressed by the ASN to the concerned responsible persons (operators of nuclear facilities, directors of companies etc..) when anomalies requiring a corrective action have been noticed during on-site or off-site safety inspections. This document brings together the formal notices addressed by the ASN since June 2000 and up to April 2002. (J.S.)

  17. Production and validation of nuclear data for reactor and fuel cycle applications; Production et validation des donnees nucleaires pour les applications reacteurs et cycle du combustible

    Energy Technology Data Exchange (ETDEWEB)

    Trakas, C. [Framatome ANP GmbH NBTT, Erlangen (Germany); Verwaerde, D. [Electricite de France EDF, 75 - Paris (France); Toubon, H. [Cogema, 78 - Velizy Villacoublay (France)] [and others

    2002-07-01

    The aim of this technical meeting is the improvement of the existing nuclear data and the production of new data of interest for the upstream and downstream of the fuel cycle (enrichment, fabrication, management, storage, transport, reprocessing), for the industrial reactors, the research reactors and the new reactor concepts (criticality, dimensioning, exploitation), for the instrumentation systems (external and internal sensors), the radioprotection, the residual power, the structures (neutron bombardment effect on vessels, rods etc..), and for the activation of steel structures (Fr, Ni, Co). The expected result is the collection of more reliable and accurate data in a wider spectrum of energies and temperatures thanks to more precise computer codes and measurement techniques. This document brings together the communications presented at this meeting and dealing with: the process of production and validation of nuclear data; the measurement facilities and the big international programs; the users needs and the industrial priorities; the basic nuclear data (BND) needs at Cogema; the expression and evaluation of BND; the evaluation work: the efficient cross-sections; the processing of data and the creation of activation libraries; from the integral measurement to the qualification and the feedback on nuclear data. (J.S.)

  18. Microstructure and embrittlement of VVER 440 reactor pressure vessel steels; Microstructure et fragilisation des aciers de cuve des reacteurs nucleaires VVER 440

    Energy Technology Data Exchange (ETDEWEB)

    Hennion, A

    1999-03-15

    27 VVER 440 pressurised water reactors operate in former Soviet Union and in Eastern Europe. The pressure vessel, is made of Cr-Mo-V steel. It contains a circumferential arc weld in front of the nuclear core. This weld undergoes a high neutron flux and contains large amounts of copper and phosphorus, elements well known for their embrittlement potency under irradiation. The embrittlement kinetic of the steel is accelerated, reducing the lifetime of the reactor. In order to get informations on the microstructure and mechanical properties of these steels, base metals, HAZ, and weld metals have been characterized. The high amount of phosphorus in weld metals promotes the reverse temper embrittlement that occurs during post-weld heat treatment. The radiation damage structure has been identified by small angle neutron scattering, atomic probe, and transmission electron microscopy. Nanometer-sized clusters of solute atoms, rich in copper with almost the same characteristics as in western pressure vessels steels, and an evolution of the size distribution of vanadium carbides, which are present on dislocation structure, are observed. These defects disappear during post-irradiation tempering. As in western steels, the embrittlement is due to both hardening and reduction of interphase cohesion. The radiation damage specificity of VVER steels arises from their high amount of phosphorus and from their significant density of fine vanadium carbides. (author)

  19. Platinoids and molybdenum in nuclear waste containment glasses: a structural study; Les platinoides et le molybdene dans des verres d'interet nucleaires: etude structurale

    Energy Technology Data Exchange (ETDEWEB)

    Le Grand, M. [CEA/VALRHO - site de Marcoule, Dept. de Recherche en Retraitement et en Vitrification (DRRV), 30 - Marcoule (France)]|[Paris-7 Univ., 75 (France)

    2000-07-01

    This work deals with the structure of borosilicate nuclear glasses and with some relationships between structure and macroscopic properties. Two types of elements which may disturb the industrial process - platinoids (Ru and Pd) and molybdenum - are central to this work. Platinoids induce weak modifications on the structure of the glass, causing a depolymerization of the glassy network, an increase of the {sup [3]}B/{sup [4]}B ratio and a modification of the medium range order around Si between 3.3 and 4.5 angstrom. The modifications of viscosity and density induced by platinoids in the glass are not due to the structural effect of the platinoids. The increase of viscosity is attributed to needle shaped RuO{sub 2}. It can be moderated by imposing reducing conditions during the elaboration of the glass. The slight difference between experimental and calculated densities is due to the increase of the volume percentage of bubbles in the glass with increasing platinoid content. Mo is either present in the glass as molybdic groupings, or mobilized in chemically complex molybdic crystalline phases. The chemical composition and mineralogy of these phases has been obtained using electronic microprobe data and XRD with Rietveld analysis. The distribution of the different elements between the crystalline phases and the glass is strongly influenced by the structural role of the various cations in the glass. The Mo present in the glass appears as MoO{sub 4} tetrahedra, independent of the borosilicate network. The formation of the crystalline phases can be explained by the existence of a precursor in which the MoO{sub 4} tetrahedra are concentrated in rich alkali and earth-alkali bearing areas of the glass. (author)

  20. Questions about the future of the nuclear energy; Les interrogations sur l'avenir de l'energie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-12-15

    The nuclear energy became a society subject much debated. This analysis discusses in three chapters the different interrogations concerning the nuclear energy: the comparison between the different energy sources to justify the preservation of the nuclear energy in France and in the world, the compatibility of the nuclear energy with the different socio-economic choices as the main condition of its development, and the role of the Government to transform the energy policy on the society choice. (A.L.B.)

  1. Thermal stability of the French nuclear waste glass - long term behavior modeling; Etude de la stabilite thermique du verre nucleaire. Modelisation de son evolution a long terme

    Energy Technology Data Exchange (ETDEWEB)

    Orlhac, X

    2000-07-01

    The thermal stability of the French nuclear waste glass was investigated experimentally and by modeling to predict its long-term evolution at low temperature. The crystallization mechanisms were analyzed by studying devitrification in the supercooled liquid. Three main crystalline phases were characterized (CaMoO{sub 4}, CeCO{sub 2}, ZnCr{sub 2}O{sub 4}). Their crystallisation was TO 4.24 wt%, due to the low concentration of the constituent elements. The nucleation and growth curves showed that platinoid elements catalysed nucleation but did not affect growth, which was governed by volume diffusion. The criteria of classic nucleation theory were applied to determine the thermodynamic and diffusional activation energies. Viscosity measurements illustrate the analogy between the activation energy of viscous flow and diffusion, indicating control of crystallization by viscous flow phenomena. The combined action of nucleation and growth was assessed by TTT plots, revealing a crystallization equilibrium line that enables the crystallized fractions to be predicted over the long term. The authors show that hetero-genetics catalyze the transformation without modifying the maximum crystallized fraction. A kinetic model was developed to describe devitrification in the glass based on the nucleation and growth curves alone. The authors show that the low-temperature growth exhibits scale behavior (between time and temperature) similar to thermo-rheological simplicity. The analogy between the resulting activation energy and that of the viscosity was used to model growth on the basis of viscosity. After validation with a simplified (BaO{sub 2}SiO{sub 2}) glass, the model was applied to the containment glass. The result indicated that the glass remained completely vitreous after a cooling scenario with the one measured at the glass core. Under isothermal conditions, several million years would be required to reach the maximum theoretical crystallization fraction. (author)

  2. Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse - CSNSM/Centre for nuclear and mass spectroscopy, Activity Report 2007-2009

    International Nuclear Information System (INIS)

    2010-01-01

    The Centre for nuclear and mass spectroscopy (CSNSM) is a CNRS (National Centre for Scientific Research) laboratory affiliated with Paris-Sud University. The CSNSM is involved in pluri-disciplinary activities covering various scientific domains: Nuclear Structure (SNO), Nuclear Astrophysics (AN), Solid State Astrophysics (AS), Solid State Physics (PS) and Chemical Physics of Irradiation. This document presents the activity of the Centre during the 2007-2009 years: Nuclear Astrophysics; Solid State Astrophysics; Physics and Chemistry of Irradiation; Solid State Physics and cryogenic detectors; Solid State Physics, Condensed Matter and Irradiation; Structure of the Atomic Nucleus; Teaching and training activities; Spreading scientific culture; Administrative services; Electronics Group; Computer Department; Mechanics Department; RESET Service (Radiation-Environment-Safety- Maintenance-Work); SEMIRAMIS (ion source and ion beam handling)

  3. Atomic spectroscopy study of nuclear properties of francium and cesium isotopes; Etude par spectroscopie atomique de proprietes nucleaires d'isotopes de francium et de cesium

    Energy Technology Data Exchange (ETDEWEB)

    Coc, A

    1986-04-15

    This work is based on the study of cesium ({sup 118,146}Cs) and francium ({sup 207-213}Fr,{sup 220-228}Fr) isotopes by hyperfine atomic spectroscopy and on the interpretation of these results from the nuclear physics point of view. The measured nuclear quantities are: the spin, the magnetic moment, the electric quadrupole moment and the mean square charge radius. The experimental method which is based on hyperfine optical pumping with a tunable laser, followed by magnetic analysis of the atoms is described in the first part. Results related to atomic physics are also presented. In the second part, these data are interpreted in the framework of nuclear models. The deformation of light cesium isomers are compared to values obtained from a theoretical self-consistent calculation. Heavy francium isotopes are situated in an area where the existence of static octupole deformations have been predicted. The odd-even staggering measured on the mean square radius is abnormal in this region. However, on the basis of experimental data, no definitive conclusion can be drawn regarding the nature of these deformations. (author)

  4. Nuclear systems of the future. Stakes, R and D strategy, and international cooperation; Les systemes nucleaires du futur. Enjeux, strategie de recherche et developpement, et cooperation internationale

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    As demonstrated by prospective studies, nuclear energy will represent a decisive contribution in the future energy mix. The long-term strategy of development of nuclear energy requires to foresee a new generation of nuclear systems, named generation 4. The goal of these new systems is to optimize the use of nuclear fuels, to minimize the generation of wastes and to enlarge the field of applications of nuclear energy to other applications like: hydrogen and synthetic fuels generation, heat generation for the industry etc. This document presents the French R and D strategy on nuclear systems of 4. generation that has been approved by the public authorities. This strategy follows three axes: a priority research on fast neutron systems with fuel recycle (sodium fast reactors (SFR) and gas fast reactors (GFR)), a research on key-technologies for the supply of very high temperature heat (very high temperature reactor (VHTR), fast and thermal neutron reactors, and water decomposition processes), and a continuation of researches on PWR reactors improvement. An integral recycling of all actinides in fast neutron reactors requires the development of new fuel reprocessing and fuel re-fabrication processes. A reference scenario for the progressive renewal of French nuclear facilities foresees the simultaneous development of fast neutron systems and the start-up of a new spent fuel reprocessing plant. France in involved in the development of the SFR, GFR and VHTR systems thanks to its participation to the Generation 4 international forum and to bilateral cooperation with other big nuclear partners like Russia and China. One of the main stakes of the French nuclear industry is to be able to invest in the R and D of future nuclear systems in order to valorize the experience gained so far in sodium FBR systems and in fuel cycle processes. (J.S.)

  5. United Kingdom from past leadership to the renaissance of nuclear industry; Le Royaume-Uni: a l'avant-garde de la renaissance du nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Capdevila, J.M. [CEA/Ambassade de France a Londres (United Kingdom)

    2010-07-15

    United-Kingdom has developed a long tradition of know-how in the domain of nuclear energy since 1956 when the first power reactor entered into service at Calder Hall site. From 1956 till now 45 reactors have been successively connected to the grid. All the sectors of nuclear industry were developed: uranium conversion, enrichment, fuel fabrication, MOX fabrication, spent fuels reprocessing and radioactive waste management. Now British nuclear industry is slowly getting out of a 20 year long period of lethargy due mainly to the lost competition with the oil and gas from the North sea fields. Since 2008 and because the North sea resources are waning, U.K. has become again an oil importer. The new energy policy of the government is to favor renewable energies and to support at least the renewal of the today's reactors. 19 reactors are operating but most are old: 14 reactors will have to be stopped by 2018 unless service life extensions are allowed. The French EDF company who purchased British-Energy in 2009 has announced the construction of 4 EPR by 2025. The renaissance of the nuclear industry in U.K. is all the easier as the past was glorious. (A.C.)

  6. Assessment of the feasibility of indefinite containment of canadian nuclear fuel wastes; Evaluation de la faisabilite du confinement illimite des dechets de combustible nucleaire canadiens

    Energy Technology Data Exchange (ETDEWEB)

    Shoesmith, D.W.; King, F.; Ikeda, B.M.

    1995-05-01

    This report presents an analysis of the expected corrosion behavior of nuclear fuel waste containers in a conceptual Canadian disposal vault. The container materials considered are dilute Ti alloys (Grades-2, -12 and -16) and oxygen-free copper.

  7. Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse - CSNSM/Centre for nuclear and mass spectroscopy, Activity Report 2010-2012

    International Nuclear Information System (INIS)

    2013-07-01

    The Centre for nuclear and mass spectroscopy (CSNSM) is a CNRS (National Centre for Scientific Research) laboratory affiliated with Paris-Sud University. The CSNSM is involved in pluri-disciplinary activities covering various scientific domains: Nuclear Structure (SNO), Nuclear Astrophysics (AN), Solid State Astrophysics (AS), Solid State Physics (PS) and Chemical Physics of Irradiation. This document presents the activity of the Centre during the 2010-2012 years: Nuclear Astrophysics; Solid State Astrophysics; Physics and Chemistry of Irradiation; Solid State Physics Group; Condensed Matter and Irradiation: from fundamental to functional; Structure of the Atomic Nucleus; Teaching activities; Spreading scientific culture; Administrative services; Electronics Group; Computer Department; Mechanics Department; RESET Service (Radiation-Environment-Safety- Maintenance-Work); SEMIRAMIS (ion source and ion beam handling)

  8. A world of nuclear and radiation literature. Database INIS exists 25 year; Een wereld van nucleaire en stralingsliteratuur. Database INIS bestaat 25 jaar

    Energy Technology Data Exchange (ETDEWEB)

    Verkroost, H. [Netherlands Energy Research Foundation ECN, Petten (Netherlands). Unit ECN Policy Studies

    1995-09-01

    On the occasion of the 25th birthday of the database INIS a brief overview is given of the contents of INIS, its products and services, and the future of INIS. For the readers of this magazine an indication is given of the literature that is available in INIS in the subject categories for external radiation, internal radiation, radiation protection and dosimetry. 1 tab.

  9. Contribution to the study of thermal-hydraulic problems in nuclear reactors; Contribution a l`etude de problemes de thermohydraulique dans les reacteurs nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Cognet, G

    1998-07-07

    In nuclear reactors, whatever the type considered, Pressurized Water Water Reactors (PWRs), Fast Breeder reactors (FBRs)..., thermal-hydraulics, the science of fluid mechanics and thermal behaviour, plays an essential role, both in nominal operating and accidental conditions. Fluid can either be the primary fluid (liquid or gas) or a very specific fluid called corium, which, in case of severe accident, could result from core and environning structure melting. The work reported here represents a 20-year contribution to thermal-hydraulic issues which could occur in FBRs and PWRs. Working on these two types of reactors, both in nominal and severe accident situations, has allowed me to compare the problems and to realize the importance of communication between research teams. The evolution in the complexity of studied problems, unavoidable in order to reduce costs and significantly improve safety, has led me from numerical modelling of single-phase flow turbulence to high temperature real melt experiments. The difficulties encountered in understanding the observed phenomena and in increasing experimental databases for computer code qualification have often entailed my participation in specific measurement device developments or adaptations, in particular non-intrusive devices generally based on optical techniques. Being concerned about the end-use of this research work, I actively participated in `in-situ` thermalhydraulic experiments in the FBRs: Phenix and Super-Phenix, of which I appreciated their undeniable scientific contribution. In my opinion, the thermal-hydraulic questions related to severe accidents are the most complex as they are at the cross-roads of several scientific specialities. Consequently, they require a multi-disciplinary approach and a continuous see-saw motion between experimentalists and modelling teams. After a brief description of the various problems encountered, the main ones are reported. Finally, the importance for research teams to participate in large international concerted actions is highlighted. (author) 64 refs.

  10. Adaptation possibilities of the nuclear electricity production to the demand; Possibilites d'adaptation de la production d'electricite nucleaires a la demande

    Energy Technology Data Exchange (ETDEWEB)

    Acket, C

    2009-02-15

    Meeting about the CO{sub 2} emissions from electric heating showed that the leak of adaptation from nuclear reactors led the use of thermal power plants (coal, petroleum, gas) to control the demand variations. This argument is analyzed in the document: is it possible to replace those thermal power plants by nuclear reactors? In this framework the author analyzes the network needs, the electricity sources and the demand answer and the specificities of the nuclear. (A.L.B.)

  11. Nuclear energy, a French neurosis - After Fukushima, when is the end?; Le nucleaire, une nevrose francaise - Apres Fukushima, a quand la sortie?

    Energy Technology Data Exchange (ETDEWEB)

    Piro, Patrick

    2012-02-09

    With 58 reactors in operation, France is at 75% a nuclear-dependent country for power generation. For forty years no calling into question of this policy has been possible. The Fukushima catastrophe of March 11, 2011 has changed the deal. Several countries, like Germany, Switzerland, Belgium and Italy have taken the decision to get out of nuclear energy. In France, the taboo question of its abandonment has moved to the front of the scene. Some political parties have proposed a significant reduction of the nuclear share in the energy mix while some 'zero nuclear' scenarios are already on the table. (J.S.)

  12. Report of transparency and nuclear safety 2007 CEA Fontenay aux Roses; Rapport transparence et securite nucleaire 2007 CEA Fontenay aux Roses

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    This report presents the activities of the CEA Center of Fontenay aux roses for the year 2007. After many years of decommissioning and dismantling of nuclear installations, the Center is now devoted (since 2005) to the development of research programmes on biology and biomedical technologies. The actions concerning the safety, the radiation protection, the significant events, the release control and the environmental impacts and the wastes stored on the center are discussed. (A.L.B.)

  13. Proposition of law relative to the sanitary follow up of French nuclear tests; Proposition de loi relative au suivi sanitaire des essais nucleaires francais

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-03-15

    The present proposition of law has for object to answer the expectation of all the persons who have participated as military personnel or civilians in nuclear tests made by France between February 13., 1960 and January 27., 1996, or lived near the nuclear test sites of Sahara (Reggane) or in French Polynesia. The same pathologies are noticed among the veteran or the populations having lived near the nuclear tests sites of the other nuclear countries which made the same experiments. It is the case in United States, in Great Britain, in Australia, in New Zealand and in Fidgi. In these different countries having a democratic system similar to ours, the governments took concrete measures to accede to the demands of their nationals. It thus turns out that a legislative initiative would represent a strong message of gratitude towards all those who had to undergo aftereffects on their health and that of their descendants of the only fact of their participation in the nuclear experiments of France. (N.C.)

  14. The reprocessing - recycling and the transport of nuclear matters in France; Le retraitement - recyclage et le transport des matieres nucleaires en France

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    In terms of radioactive wastes management two possibilities are considered: direct storage or reprocessing-recycling. The second possibility is presented with its sanitary impacts as also the energetic, environmental and economic advantages. Three other parts are devoted to the irradiated fuels transportation, the return of foreign wastes in their country of origin and the nuclear material transport between France and Germany. (A.L.B.)

  15. Challenges for the nuclear safety of the deregulation of electricity markets; Defis pour la surete nucleaire de la dereglementation des marches de l'electricite

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    Eurosafe 2000 was organised around two round tables on the first day and four seminars on the second day. The first round table dealt with general aspects of deregulation including the economic constraints and the special challenges arising during transition from regulated to deregulated structures. The second round table focussed on technical and organisational safety issues which are directly or indirectly related to the changes introduced by deregulation. The four seminars hold in order to provide opportunities for comparing experiences and learning about recent activities of IPSN, GRS and their partners in the European Union and Eastern Europe: Seminar 1 (Nuclear installation safety, assessment and analysis): assessment of the flooding incident at the Blayais nuclear power plant; PSA data base, comparison of the French and German approach; assessment of the Balakovo fire probabilistic study and elaboration of a guide for reviewing fire PSA; comprehensive technical assessment of an advanced German PWR by PSA - objectives and main results; PSA approach for the safety assessment of low-power and shutdown states; correlation of initiating events with the PSA level-2 results; safety assessment for fission products tests in the Phebus reactor; use of NPP simulators for applied human factor studies; assessment of the 'deterministic realistic method' applied to large LOCA analysis; assessment of the feasibility of an improvement programme enabling operation of units 3 and 4 of Kozloduy nuclear power plant. Seminar 2 (nuclear installation safety, research): PHEBUS 2K project on severe accidents; current status of the COCOSYS development; fission product modeling in ASTEC; Euratom Framework Programme (FP) research in reactor safety: main achievements of FP- 4 (1994-1998), some preliminary results of FP-5 (1998-2002) and prospects for beyond 2002; development of coupled systems of 3D neutronics and fluid-dynamic system codes and their application for safety analyses. Seminar 3 (environment and radiation protection): implementations of the variability in critical group doses for the control of radionuclides releases; campaign of environmental radioactivity measurements in the vicinity of La Hague made by European mobile laboratories - both a technical and sociological experience; contribution of some leading radioprotection societies to the current considerations with regard to the possible improvement of the ICRP policy system; decommissioning and dismantling of nuclear power plants: radiation protection experience in Germany; epidemiology of French nuclear workers within the IARC study. Seminar 4 (waste management): the Mont Terri rock laboratory, Switzerland; prediction of hydro-mechanical responses of a long-term pump test at the Sellafield site; modelling of water-rock interactions in deep ground-waters: equilibrium and perturbations; modelling of saturation and swelling effects in clays under different saline conditions; qualification of clay barriers in underground repository systems; integrating structural, hydraulic and geochemical evidence: a step towards understanding fluid flow through clay-rich formations; application of geostatistical methods to long-term safety analyses for radioactive waste repositories; major results and lessons learned from performance assessments on spent fuel geological disposal: the SPA project; repository incidents in Germany and abroad: what can be learnt; progress in the Chernobyl decommissioning and waste management strategy. (J.S.)

  16. Progress report: nuclear safety and radiation protection in 2006; Rapport annuel: la surete nucleaire et la radioprotection en France en 2006

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    For the French Nuclear Safety Authority (Asn), the year 2006 was marked by two important nuclear laws being passed, one of which brought about a major change in its status. The year was a relatively satisfactory one with regard to nuclear safety, although the picture was more contrasted concerning radiation protection: in this area, more particularly in the medical field, the overall impression of good progress is offset by the declaration of a number of radiotherapy accidents. Given the benefits expected from radiotherapy treatment by the patient suffering from cancer, the conditions in which this activity is carried out are a subject of major concern for Asn, in the light of the serious risks linked to patient over-exposure. ( some important points as follows: the law on transparency and security in the nuclear field, the law on sustainable management of radioactive materials and waste, Asn: an independent administrative authority, EPR reactor project safety, I.R.R.S.: an international audit of Asn in 2006, harmonization of nuclear safety, cancer radiotherapy, improved information of the public after the T.S.N. law, taking account of organisational and human factors). (N.C.)

  17. Progress report: nuclear safety and radiation protection in France in 2005; Rapport annuel: la surete nucleaire et la radioprotection en France en 2005

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    The Asn (Nuclear safety authority) considers that 2005 was a satisfactory year in terms of nuclear safety and radiation protection. However, further progress can and must be made. 2005 was a year of great progress for the Asn as it consolidated its organisation and working methods, in accordance with the 2005-2007 strategic plan it set for itself. The Asn continued progress in the field of radiation protection has given rise to various new regulations to improve the legislative and regulatory framework in this area. 2005 was marked by significant progress in the process of harmonizing national nuclear safety policies Against a backdrop of the preparation of a bill on management of radioactive materials and waste, to be presented to Parliament in March 2006, 2005 was a year of important milestones. The Asn control activities encompass the following seven areas: development of general regulations for nuclear safety and radiation protection; management of individual authorization requests and receipt of declarations; inspection of nuclear activities; organisation of radiological surveillance of individuals and of the environment; preparation for management of emergency situations and implementation if necessary; contribution to public information on nuclear safety and radiation protection; determination of the French position within international community. Main topics in 2005: government bill on transparency and security in the nuclear field; the challenges and ambitions of the Asn; controlling exposure to radon; EPR Reactor Project Safety; working towards a law on radioactive waste in 2006; I.R.R.T.: an international audit of Asn in 2006; harmonization of nuclear safety in Europe; Chernobyl: what has been achieved over the past 20 years; informing the Public; internal authorizations. (N.C.)

  18. Behaviour of radiocesium in forest ecosystem contaminated during a nuclear accident; Comportement du radiocesium en ecosysteme forestier contamine lors d'un accident nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Thiry, Y. [Univ. Catholique de Louvain, Lab. de Physiologie Vegetale, Louvain-la-Neuve (Belgium); Ronneau, C. [Univ. Catholique de Louvain, Lab. de Chimie Inorganique, Louvain-la-Neuve (Belgium); Myttenaere, C. [Univ. Catholique de Louvain, Lab. de Physiologie Vegetale, Louvain-la-Neuve (Belgium)

    1992-07-01

    Vegetation and soils sampling were realized in 2 forest zones near the accidented power plant of Chernobyl. The {sup 137}Cs distribution in a red pine stand is established; many specific measures of wood complete the study. Results discussion point out the difficulties to manage the contaminated forest area without a good knowledge of the radioelement biochemical cycle. (author)

  19. Plutonium: resuspension of aerosols in nuclear installations: bibliographic survey; Le plutonium: mise en suspension d'aerosols dans les installations nucleaires: synthese bibliographique

    Energy Technology Data Exchange (ETDEWEB)

    Guetat, Ph.; Monfort, M.; Armand, P. [CEA Bruyeres-le-Chatel, Dept. Analyse Surveillance Environnement, Service Radioanalyse Chimie Environnement, 91 (France); Alloul-Marmor, L. [Societe APTUS, 78 - Versailles (France)

    2006-07-01

    This document presents an analysis and a bibliographical synthesis of the studies on resuspension factors for plutonium. It aims at helping the engineers of safety to specify the scenarios of accidents which relate to their activities and to bring elements justified for the definition of their term-source 'installation' in the safety reports of the installations. (authors)

  20. The atolls of Mururoa and Fangataufa (French Polynesia). The nuclear testings. Radiological aspects; Les atolls de Mururoa et de Fangataufa (Polynesie Francaise). Les experimentations nucleaires. Aspects radiologiques

    Energy Technology Data Exchange (ETDEWEB)

    Martin, G

    2007-07-01

    This report provides a review of the radiological measures implemented during the thirty year period of French nuclear tests in Polynesian atolls of Mururoa and Fangataufa. It presents full details of the practices deployed throughout these tests, including, in particular, aspects concerning radiological protection for the population and the environment. It contains all the scientific results and measurements of radioactivity performed during this period, providing concrete facts that can be used to assess the consequences these tests have had on the personnel involved, the population and the environment. (author)