At the heart of EDF's education plant

International Nuclear Information System (INIS)

Maillard, C.

2010-01-01

Facing a high and growing number of retirements and the present revival of nuclear energy, Electricite de France (EDF), the French state-owned electric utility, is struggling to find the competencies it needs, especially in domains such as reactor operators, mechanic technicians and engineers in the fields of fittings, boiler fabrication, maintenance, automation, etc. EDF is thus engaged in an important education and training program. The author reports from Bugey (France), where is located one of the main EDF production-engineering training center, and describes the variety of learning activities available in the center. An important effort is devoted to the training of foreign operators in order for EDF to better compete on the nuclear energy international market

Energy - EDF takes back the control of the nuclear

International Nuclear Information System (INIS)

Dupin, Ludovic

2014-01-01

This article comments the statement made by an EDF official before the inquiry commission of the French National Assembly, about the works initiated by EDF and Areva to improve the EPR profitability. This would lead to the design of a safer, more efficient and less costly new reactor which would however require a certification. This project is based on an optimization of the Areva's EPR, and would propose different power levels, notably less powerful reactors for less connected grids (for example in Saudi Arabia), and less powerful reactors would mean less expensive reactors. The article also evokes the issue of the cost of the Finnish EPR, and the different existing and projected EPR reactors

CLI technical commission. Additional safety assessments within the EDF nuclear stock

International Nuclear Information System (INIS)

2011-01-01

This slides presentation addresses additional safety assessments within the EDF nuclear stock. It describes the context and challenges of these assessments (institutional framework, European coherence, major objectives for EDF). It describes how EDF is organised to perform these assessments: a global project after Fukushima, assessments and tests which are beyond the existing safety referential, the three defence lines and their tests. It addresses the content of assessment reports for each topic (earthquake, flooding, loss of water, loss of electric supply, accident management). It indicates some improvements proposed after the first assessments. It describes the improvements concerning the Gravelines power plant. It recalls the assessment agenda, proposes a brief overview of events, comments the results of the third decennial visit of production unit no. 1 which comprised some proof test on the primary circuit, on the reactor vessel and on the reactor building

Synthesis of the IRSN report.no. 2012-009 on the definition of a post-Fukushima hard core for EDF's PWRs: objectives, content and associated requirements. Opinion related to the post-Fukushima hard core of EDF's pressurized water reactors under construction or in operation

International Nuclear Information System (INIS)

2012-12-01

After having recalled the implementation of the additional safety assessments (ECS) on the French nuclear reactors after the Fukushima accident, and that, after these assessments, ASN asked EDF to implement a 'hard core of robust material and organisational measures' which aim at preventing an accident with a core fusion or at limiting its progress, at limiting massive radioactive releases, and at enabling the operator to perform his required missions in crisis management, a first report briefly indicates the objectives of this hard core, and discuses the material measures proposed by EDF. These measures concern the exploited reactors and the EPR Flamanville 3, the pools present in the fuel and reactor buildings. It also discusses requirements associated with these material measures, notably with respect to earthquake, flooding or other extreme events. It briefly discusses organisational measures. A second report, produced by the Permanent Group of Experts, states the opinion of this group on the same issues, and proposes a set of recommendations for further measures by EDF

Inspection systems for valves monitoring at EDF

International Nuclear Information System (INIS)

Germain, J.L.; Granal, L.; Provost, D.; Touillez, M.

1997-01-01

Electricite de France (EDF) makes increasing use of valve inspection systems to guarantee safety in its pressurized water reactor plants, improve plant availability and facilitate condition-based maintenance. A portable system known as SAMIR has been developed for inspection of motor-operated valves, and is now used on EDF's 900-MW sites. For its 1300-MW units, EDF has chosen a more complete system which enables measuring thrust on the valve stem during a maneuver, using a sensor mounted on the yoke. To detect internal vale leaks, an on-site assessment has demonstrated the economic benefits of acoustic emission techniques. EDF has equipped its sites with analog leak detection systems which may soon be replaced by a digital model now being developed. (authors)

EDF's Engineering Experience and Contribution to the Nuclear Development

International Nuclear Information System (INIS)

Salha, Bernard; Fourest, Bernard; Arpino, Jean-Marc

2002-01-01

Electricite de France (EDF) is now operating 58 nuclear power units which produce 76% of the electricity generated in France. This EDF's industrial success is the result of its capacity to master and optimize its production tool, from design through operation. EDF's integrated engineering is in the heart of this process of technical expertise and economic optimization. It allows to be in interface between the needs of operators and industrials suppliers, while accumulating a significant feedback of operating experience. The will of achieving the process of frenchifying PWR technology and to implement new industrial innovations have ended up in the new NPP of 100 % french design, the N4 series and its significant innovations. EDF energy policy is to keep the nuclear option open for the future. This strategy results from the need to improve the availability and the life extension of the units in operation and to prepare the replacement of the operating reactors around 2015. This is the objective of the European Pressurized Reactor (EPR), a French-German joint project. EDF is also applying this industrial process in its international projects. For example China, which desires to implement a standardized nuclear program and to move forward the complete autonomy of its nuclear industry, has decided to adopt a similar approach to EDF's one. (authors)

Safety challenges after the Fukushima accident for operated installations others than EDF reactors

International Nuclear Information System (INIS)

Sene, Monique; Rollinger, Francois; Lheureux, Yves; Lizot, Marie-Therese; Kerdelhue, M.; Py, M.E.; Leroyer, Veronique; Pultier, Marc; Kassiotis, Christophe; Chambrette, Pierre; Devaux, Pascal; Baron, Yves; Collinet, Jacques

2013-12-01

This document contains Power Point presentations which, within the perspective created by the Fukushima accident, address various aspects of safety issues for installations other than currently operated EDF reactors. These contributions propose: an agenda of additional safety assessments (ECS) performed on these installations and an examination of responses made to prescriptions made on the 16 June 2012; a presentation by the IRSN of ECS performed in Areva plants; a presentation by Areva of arrangements related to these ECS; a presentation of the Manche local information commissions (CLI) and a presentation of their approach according to a white paper for the safety of civil nuclear installations located in the Manche department; a presentation by the IRSN on ECS concerning various basic nuclear installations such as laboratories, experimental reactors and stopped reactors; a presentation by the CEA of ECS of its installations (context, approach, execution and conclusions); a presentation by the ANCCLI about ASN decision and decision projects about the hard core according to ECS (example of the High flux reactor in the ILL in Grenoble)

Total and EDF invest

International Nuclear Information System (INIS)

Signoret, St.

2008-01-01

So as to prepare the future of their industrial sector,the Total company plans to invest (14 billion Euros in 2008) to increase its production capacities and strengthen in of other activities as the liquefied natural gas and the renewable energies; EDF plans to inject 35 billion Euros over three years to multiply the new projects of power plants (wind turbines, coal in Germany, gas in Great Britain and nuclear power in Flamanville). EDF wants to exploit its knowledge of leader to run more than ten E.P.R.(European pressurized water reactor) in the world before 2020, projects are in examination with China, Great Britain, South Africa and United States. (N.C.)

The functioning of the reactors G2-G3 at Marcoule and E.D.F. 1; Experience de fonctionnement des reacteurs G2-G3 de Marcoule et enseignements des essais de demarrage du reacteur E.D.F. 1 de Chinon

Energy Technology Data Exchange (ETDEWEB)

Boussard, R; Conte, F [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires; Stolz, J M [Electricite de France (EDF), 75 - Paris (France)

1964-07-01

After resuming briefly the characteristics of the installations G2-G3 at Marcoule and EDF 1 at Chinon, the authors review the main aspects of the tests, the starting and the exploitation of these reactors. Among the various points examined, particular emphasis is given to the devices of original nature such as tubular fuel elements, flattening of the neutron flux by stuffing, behaviour of the reactor tanks and the cooling circuits, the blowers, unloading devices, regulation and functioning of the informations. This analysis deals equally with the performances obtained and the difficulties and the various incidents experienced during the initial starting period. Among the more interesting results, the progressive increase in the power of the Marcoule reactors is mentioned, obtained through a better knowledge of the parameters covering the functioning of the reactors such as the distribution of the flux and the temperatures etc... acquired during the course of the exploitation of the reactor. The conclusion reached by the authors is that the experience gained on these installations has shown: - that during an initial period, adjustments became necessary, all of which turned out to be possible, - that an analysis of their functioning has permitted the progressive movement towards a truly industrial exploitation. (authors) [French] Les auteurs, apres un bref rappel des caracteristiques des installations G2 - G3 de MARCOULE et E.D.F. 1 de CHINON, passent en revue les principaux aspects des essais, de la mise en service et de l'exploitation de ces centrales. Parmi les divers points examines, une attention speciale est accordee aux dispositifs presentant un caractere original tels que elements combustibles tubulaires, aplatissement du flux neutronique par gavage, comportement des caissons des reacteurs et des circuits de refroidissement, soufflantes, appareils de dechargement, regulation et fonctionnement des informations. L'analyse presentee porte tant sur les

EDF specifications on nuclear grade resins

International Nuclear Information System (INIS)

Mascarenhas, Darren; Gressier, Frederic; Taunier, Stephane; Le-Calvar, Marc; Ranchoux, Gilles; Marteau, Herve; Labed, Veronique

2012-09-01

Ion exchange resins are widely used across EDF, especially within the nuclear division for the purification of water. Important applications include primary circuit, secondary circuit and effluent treatment, which require high quality nuclear grade resins to retain the dissolved species, some of which may be radioactive. There is a need for more and more efficient purification in order to decrease worker dose during maintenance but also to decrease volumes of radioactive resin waste. Resin performance is subject to several forms of degradation, including physical, chemical, thermal and radioactive, therefore appropriate resin properties have to be selected to reduce such effects. Work has been done with research institutes, manufacturers and on EDF sites to select these properties, create specifications and to continuously improve on these specifications. An interesting example of research regarding resin performance is the resin degradation under irradiation. Resins used in the CVCS circuit of EDF nuclear power plants are subject to irradiation over their lifetime. A study was carried out on the effects of total integrated doses of 0.1, 1 and 10 MGy on typically used EDF mixed bed resins in a 'mini-CVCS' apparatus to simultaneously test actual primary circuit fluid. The tests confirmed that the resins still perform efficiently after a typical CVCS radiation dose. Certain resins also need additional specifications in order to maintain the integrity of the particular circuits they are used in. Recently, EDF has updated its requirements on these high purity nuclear grade resins, produced generic doctrines for all products and materials used on site which include resins of all grades, and as a result have also updated a guide on recommended resin usage for the French fleet of reactors. An overview of the evolutions will be presented. (authors)

Computer-generated vibratory signatures for EDF PWR reactor vessel internals

International Nuclear Information System (INIS)

Trenty, A.; Lefevre, F.; Garreau, D.

1992-07-01

This paper presents a device for generation of characteristic signatures for normal or faulty vibrations on EDF PWR internal structures. The objective is to test the efficiency of methods for diagnosing faults in these structures. With this device, it is possible to build an entire PSD in several phases: choice of a general basic shape, localized addition of several kinds of background noise, generation of peaks of variable shapes, adjustment of local or global amplifications... It also offers the possibility of distorting real PSDs acquired from the reactor: shifting frequency or modifying peak shape, eliminating or adding existing shapes or shapes to be created, smoothing curves... One example is given of simulated loss of function in a hold-down spring on a computer-generated PSD of ex-core neutron noise. The device is now being used to test the potential of neural networks in recognizing faults on internal structures

Audit on modalities of assessment of gross claims for the calculation of provisions of deconstruction of currently operated EDF reactors. Report synthesis, August 4, 2015

International Nuclear Information System (INIS)

2015-01-01

Based on data provided by EDF, this report presents hypotheses, calculation methods and analyses regarding modalities of assessment of provisions for the deconstruction of EDF reactors. After a presentation of the EDF PWR fleet, an overview of dismantling activities at the world scale, a discussion of accounting provisions, a presentation of the audit methodology and limitations, the authors report an analysis of deconstruction costs through the case of Dampierre (dismantling strategy, planning, engineering expenses, site-related expenses, dismantling costs, demolition costs, waste management cost). They propose a comparison at the international level, discuss an extrapolation to the whole fleet, evoke a risk analysis, and presents their conclusion for the global assessment

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)

Corrosion behaviour of zircaloy 4 fuel rod cladding in EDF power plants

Energy Technology Data Exchange (ETDEWEB)

Romary, H; Deydier, D [EDF, Direction de l` Equipment SEPTEN, Villeurbanne (France)

1997-02-01

Since the beginning of the French nuclear program, a surveillance of fuel has been carried out in order to evaluate the fuel behaviour under irradiation. Until now, nuclear fuels provided by suppliers have met EDF requirements concerning fuel behaviour and reliability. But, the need to minimize the costs and to increase the flexibility of the power plants led EDF to the definition of new targets: optimization of the core management and fuel cycle economy. The fuel behaviour experience shows that some of these new requirements cannot be fully fulfilled by the present standard fuel due to some technological limits. Particularly, burnup enhancement is limited by the oxidation and the hydriding of the Zircaloy 4 fuel rod cladding. Also, fuel suppliers and EDF need to have a better knowledge of the Zy-4 cladding behaviour in order to define the existing margins and the limiting factors. For this reason, in-reactor fuel characterization programs have been set up by fuel suppliers and EDF for a few years. This paper presents the main results and conclusions of EDF experience on Zy-4 in-reactor corrosion behaviour. Data obtained from oxide layer or zirconia thickness measurements show that corrosion performance of Zy-4 fuel rod cladding, as irradiated until now in EDF reactors, is satisfactory but not sufficient to meet the future needs. The fuel suppliers propose in order to improve the corrosion resistance of fuel rod cladding, low tin Zy-4 cladding and then optimized Zy-4 cladding. Irradiation of these claddings are ongoing. The available corrosion data show the better in-reactor corrosion resistance of optimized Zy-4 fuel rod cladding compared to the standard Zy-4 cladding. The scheduled fuel surveillance program will confirm if the optimized Zy-4 fuel rod cladding will meet the requirements for the future high burnup and high flexibility fuel. (author). 10 refs, 19 figs, 4 tabs.

GAO report and EDF cost revisions reignite debate on Hinkley Point C

Energy Technology Data Exchange (ETDEWEB)

Dalton, David [NucNet, The Independent Global Nuclear News Agency, Brussels (Belgium)

2017-10-15

The announcement by French state-controlled utility EDF that it has added pound 1.5 bn (Euro 1.7 bn, $ 1.9 bn) to its estimated costs for two new reactors at Hinkley Point C, has led to questions about whether the government should rethink the project, with some politicians calling for it to be abandoned. EDF's announcement came less than two weeks after a report from the Government Accountability Office (GAO) said the government's deal for the two EPR units, now estimated to be costing pound 19.6 bn (Euro 22.3 bn, $ 25.5 bn), has locked consumers into a risky and expensive project with uncertain strategic and economic benefits. The UK's Energy Technologies Institute (ETI), in a report prepared before the EDF announcement, had already said the requirement to improve the predictability and affordability of new nuclear power plants has never been stronger.

GAO report and EDF cost revisions reignite debate on Hinkley Point C

International Nuclear Information System (INIS)

Dalton, David

2017-01-01

The announcement by French state-controlled utility EDF that it has added pound 1.5 bn (Euro 1.7 bn, $ 1.9 bn) to its estimated costs for two new reactors at Hinkley Point C, has led to questions about whether the government should rethink the project, with some politicians calling for it to be abandoned. EDF's announcement came less than two weeks after a report from the Government Accountability Office (GAO) said the government's deal for the two EPR units, now estimated to be costing pound 19.6 bn (Euro 22.3 bn, $ 25.5 bn), has locked consumers into a risky and expensive project with uncertain strategic and economic benefits. The UK's Energy Technologies Institute (ETI), in a report prepared before the EDF announcement, had already said the requirement to improve the predictability and affordability of new nuclear power plants has never been stronger.

EDF and Areva: a hazardous and risky strategy

International Nuclear Information System (INIS)

Teule, Rianne; Thomas, Steve

2009-06-01

As EDF and Areva have been developing for several years a strategy exclusively based on a nuclear revival in the world, this document proposes a synthesis of a study in which the author describes and analyses this strategy, as well as the actual trade perspectives of the sector, and outlines the many uncertainties regarding development projects. It addresses the financial and political context for EDF (a record indebtedness) and Areva (an inability to face investments) and outlines the supporting role of the Coface (the only way for the French government to support EDF and Areva). It highlights and discusses the failures of both ERP projects, in Flamanville (cost overruns and consequences) and in Finland. It addresses the actual status of markets, notices that France's strategy (lifetime extension for the existing reactors) implies that the construction of new EPRs might finally be postponed, that which would mean a loss of prospects for Areva and a catastrophe for the EPR program. It comments the commitment of EDF in the UK and outlines that the success of the development of new nuclear plants still depends on public subsidies which are not yet decided. The author considers that investments made by EDF in the USA seem rather speculative, and outlines that there are still financial issues and uncertainties like in the UK. The presence and activities of EDF and Areva in China are also commented, and more briefly for the rest of the world

EDF - The Inspector General's report on Nuclear Safety and Radiation Protection

International Nuclear Information System (INIS)

Tandonnet, Jean

2012-01-01

This report is destined for the President of EDF with the purpose of informing him of the judgement the Inspector General has about the nuclear safety and radiation protection within the EDF Group. It is also intended for all who, in any way, play a role at EDF in improving nuclear safety. It may also prove useful to those outside the company who work in the nuclear field or indeed any branch of industry where there are risks to be managed and who wish to participate in the debate. It also contributes to the pool of information shared with the other nuclear operators under the auspices of WANO. The continuous improvement of nuclear safety results is a fundamental commitment of the EDF Group. This is notably reflected in a policy of transparency, whether in France, Britain, America or China. This document constitutes an example of this, offering an independent view of the operational situation. It is based on facts and findings derived in EDF's contacts with field staff and meetings with the decision makers, managers, medical personnel and players on both sides of this industry as well as outside stakeholders, especially contractor companies. The resulting snapshot of the situation in the field is particularly instructive. This report therefore concentrates more on problems and weaknesses rather than strengths and progress, except as concerns happenings outside France, where the focus is more on good practices than difficulties. Contents: 1 - The view from the Inspector General of EDF about the nuclear safety in the EDF group; 2 - A panorama of 2011: The management, The state of the installations, Maintenance of the French nuclear power plants, Relations with the French nuclear safety authority (ASN), The EPR projects, The players in the fields of health and safety, Radiation protection, Fire prevention and fire fighting, Increasing nuclear power plant security, Decommissioning; 3 - Nuclear safety management; 4 - The Fukushima Daiichi accident; 5 - Training to

Development and testing of the EDF-2 reactor fuel element; Essais et mise au point de l'element combustible pour le reacteur EDF-2

Energy Technology Data Exchange (ETDEWEB)

Delpeyroux, P [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires; Furhmann, R [Societe Industrielle de Combustible Nucleaire (France)

1964-07-01

This technical report reviews the work which has been necessary for defining the EDF-2 fuel element. After giving briefly the EDF-2 reactor characteristics and the preliminary choice of parameters which made it possible to draw up a draft plan for the fuel element, the authors consider the research proper: - Uranium studies: tests on the passage into the {beta} phase of an internal crown of a tube, bending of the tube under the effect of a localized force, welding of the end-pellets and testing for leaks. The resistance of the tube to crushing and of the pellets to yielding under the external pressure have been studied in detail in another CEA report. - Can studies: conditions of production and leak proof testing of the can, resistance of the fins to creep due to the effect of the gas flow. - Studies of the extremities of the element: creep under compression and welding of the plugs to the can. - Cartridge studies: determination of the characteristics of the can fuel fixing grooves and of the canning conditions, verification of the resistance of the fuel element to thermal cycling, determination of the temperature drop at the can-fuel interface dealt with in more detail in another CEA report. - Studies of the whole assembly: this work which concerns the graphite jacket, the support and the cartridge vibrations has been carried out by the Mechanical and Thermal Study Service (Mechanics Section). In this field the Fuel Element Study Section has investigated the behaviour of the centering devices in a gas current. The outcome of this research is the defining of the plan of the element the production process and the production specifications. The validity of ail these out-of-pile tests will be confirmed by the in-pile tests already under way and by irradiation of the elements in the EDF-2 reactor itself. In conclusion the programme is given for improving the fuel element and for defining the fuel element for the second charge. (authors) [French] Ce rapport technique

Structural mechanics studies at E.D.F

International Nuclear Information System (INIS)

Baylac, G.

1983-01-01

Structural mechanics studies at EDF have three goals: a better knowledge of the materials properties, an an improvement of the design, and a better in service surveillance of the components. This study has lead EDF to perform a large investment to make possible the fatigue survey of the primary circuit. This investment is of 10 men-years for the mechanical studies. A cumulative bookkeeping of the transients is now in action at Fessenheim I and II, Bugey II to V, Tricastin I, Gravelines I, Dampierre I. A catalog of the transients easy to use will be provided to each unit in the near future. The design of the new four loop plants will take advantage of a new catalog of the design transients, this catalog being used for the purpose of the design and the bookkeeping of the transients. Experimental and theoretical investigations concerning the vibrations of PWR internals and primary circuit have been carried out at Fessenheim I, Bugey V and Tricastin I . As a result of these studies and complementary studies on Safran mock-up, EDF has been able to define with FRAMATOME and CEA a monitoring system to meet the requirements of the safety authorities. The monitoring system is divided in to three parts: loose - parts detection system accelerometers; monitoring of reactor internals by neutron noise measurements; monitoring of heavy components vibrations by accelerometers. This system is now installed in all PWR units. Some developments are in progress at EDF mainly at the Directorate of Research and Development to improve the procedures of the control and to define the criteria for an early diagnostic of the anomalies. The major reports are Surveillance du comportement vibratoire des composants de circuit primaire; Vibration studies on a three loop PWR internals model; and Nuclear Reactor Surveillance - Neutron noise measurements and vibrations analysis on French PWR Internal structures

Maintenance of EDF nuclear power plants and servicing companies. Progress report

International Nuclear Information System (INIS)

Baize, Jean-Marc; Reveillon, Sylvie

1997-01-01

French Electricity Company (EDF - Electricite de France) and the associated servicing companies, engaged in maintenance partnership from 1991, reinforce and expand their policy by undersigning a progress charter, to cope with the safety and nuclear sector competition issues. This charter stipulates the mutual engagements in the following sectors: 1. Transparency in calling for servicing; 2. Development of the intervenors' professionalism; 3. Improvement in forecasting activity tasks; 4. Radioprotection; 5. Safety and working conditions. The 55 reactors of the EDF nuclear stock are stopped annually for around 6 weeks for refueling. On this occasion the essential maintenance works necessary to ensure the optimal safety of the installations are carried out. The maintenance requires the intervention of 30,000 employees, 10,000 EDF agents and 20,000 external intervenors and represents an amount of 14 million working hours. The full maintenance expenses amounts up to 11 billion FF in 1996, 6 billion of which are assigned to external companies

EDF group - annual report 2003; Groupe EDF - rapport annuel 2003

Energy Technology Data Exchange (ETDEWEB)

NONE

2004-07-01

This document contains the magazine, the financial statements and the sustainable development report of Electricite de France (EdF) group for 2003: 1 - the magazine (chairman's statement, group profile, vision and strategy); 2 - the consolidated financial statements for the period ended 31 December 2003 (statutory auditors' report on the consolidated financial statements, EDF's summary annual financial statements); 3 - sustainable development report (transparency and dialogue, responsibility, commitment, partnerships for progress). (J.S.)

About the EDF formation in a capacitively coupled argon plasma

International Nuclear Information System (INIS)

Tatanova, M; Thieme, G; Basner, R; Hannemann, M; Golubovskii, Yu B; Kersten, H

2006-01-01

The formation of the electron distribution function (EDF) in the bulk plasma of a capacitively coupled radio-frequency (rf) discharge in argon generated in the plasma-chemical reactor PULVA-INP is investigated experimentally and theoretically. Measurements of the EDF and internal plasma parameters were performed by means of a Langmuir probe at pressures of 0.5-100 Pa and discharge powers of 5-100 W. The observed EDFs have revealed a two-temperature behaviour at low pressures and evolved into a Maxwellian distribution at high gas pressures and large discharge powers. Theoretical determination of the EDF is based on the numerical solution of the Boltzmann kinetic equation in the local and non-local approaches under experimental conditions. The model includes elastic and inelastic electron-atom collisions and electron-electron interactions. Low electron temperatures and relatively high ionization degrees are the features of the PULVA-INP rf discharge. This leads to significant influence of the electron-electron collisions on the EDF formation. The modelled and measured distributions show good agreement in a wide range of discharge parameters, except for a range of low gas pressures, where the stochastic electron heating is intense. Additionally, mechanisms of the EDF formation in the dc and rf discharge were compared under similar discharge conditions

About the EDF formation in a capacitively coupled argon plasma

Energy Technology Data Exchange (ETDEWEB)

Tatanova, M [Institute of Physics, Saint-Petersburg State University, ul. Ulianovskaja 1, 198504 Saint-Petersburg (Russian Federation); Thieme, G [Institut fur Niedertemperatur-Plasmaphysik, Friedrich-Ludwig-Jahn-Str 19, D-17489 Greifswald (Germany); Basner, R [Institut fur Niedertemperatur-Plasmaphysik, Friedrich-Ludwig-Jahn-Str 19, D-17489 Greifswald (Germany); Hannemann, M [Institut fur Niedertemperatur-Plasmaphysik, Friedrich-Ludwig-Jahn-Str 19, D-17489 Greifswald (Germany); Golubovskii, Yu B [Institute of Physics, Saint-Petersburg State University, ul. Ulianovskaja 1, 198504 Saint-Petersburg (Russian Federation); Kersten, H [Institut fur Niedertemperatur-Plasmaphysik, Friedrich-Ludwig-Jahn-Str 19, D-17489 Greifswald (Germany)

2006-08-01

The formation of the electron distribution function (EDF) in the bulk plasma of a capacitively coupled radio-frequency (rf) discharge in argon generated in the plasma-chemical reactor PULVA-INP is investigated experimentally and theoretically. Measurements of the EDF and internal plasma parameters were performed by means of a Langmuir probe at pressures of 0.5-100 Pa and discharge powers of 5-100 W. The observed EDFs have revealed a two-temperature behaviour at low pressures and evolved into a Maxwellian distribution at high gas pressures and large discharge powers. Theoretical determination of the EDF is based on the numerical solution of the Boltzmann kinetic equation in the local and non-local approaches under experimental conditions. The model includes elastic and inelastic electron-atom collisions and electron-electron interactions. Low electron temperatures and relatively high ionization degrees are the features of the PULVA-INP rf discharge. This leads to significant influence of the electron-electron collisions on the EDF formation. The modelled and measured distributions show good agreement in a wide range of discharge parameters, except for a range of low gas pressures, where the stochastic electron heating is intense. Additionally, mechanisms of the EDF formation in the dc and rf discharge were compared under similar discharge conditions.

EDF decommissioning programme a global commitment to safety, environment and cost efficiency of nuclear energy

International Nuclear Information System (INIS)

Grenouillet, J.-J.

2002-01-01

EDF has 9 NPPs permanently shutdown and under decommissioning. EDF considers that if the nuclear option is to remain open, it is necessary to deal with increasing public concerns for environmental and waste management issues. Therefore EDF has decided to achieve total dismantling of all shutdown reactor in the next 25 years. The Decommissioning Program has been developed including 2 stages of activities. The first stage consists of: 1) Final dismantling of Brennilis in 2015; 2) A dismantling demonstration of a PWR reactor building (Chooz A) before starting replacing the population of PWRs currently in operation; 3) Final dismantling of reactor containment of a GCR (Bugey 1) as a first of its kind. The second stage includes: 1)Dismantling of following 5 GCR (Saint Laurent A1 and A2, Chinon A1, A2 and A3); 2) Final dismantling of Chooz A and Bugey 1 in 2025. The successful implementation relies on the simplification of the regulatory process; availability of treatment, conditioning and disposal facilities and effective nuclear industry. The main issue is availability of time and waste solutions such as opening of a Very Low Waste disposal in 2003 (130 000 tons); opening of a new disposal for graphite and radiferous wastes (17 000 tons) in 2010 and opening in 2007-2008 of a centralized interim storage (BANEDA) facility for long-lived Medium Level Wastes (500 tons including filters, control rods etc)Three investigations are to be carried out for high level radioactive waste before 2006

EDF national emergency organization

International Nuclear Information System (INIS)

Laverge, J.

1992-01-01

The scope of French nuclear power led Electricite de France (EDF) to design standard products, manufactured in series but adaptable to different sites. Standardization is based on the decision on a single technology: pressurized water reactors (PWR). Thirty-four 900 MW and seventeen 1300 MW units are in operation on seventeen sites. The specific nature of French organization for normal operation and accident management results from equipment standardization and single licensee. This specificity is based on emergency plan standardization and highly structured national organization. Figs

EDF experience with open-quotes hot spotclose quotes management

International Nuclear Information System (INIS)

Guio, J.M. de

1995-01-01

During the past few years, open-quotes hot spotsclose quotes due to the presence of particles of metal activated during their migration through the reactor core, have been detected at several French pressurized water reactor (PWR) units. These open-quotes hot spots,close quotes which generate very high dose rates (from about 10 Gy/h to 200 G/h) are a significant factor in increase occupational exposures during outrates. Of particular concern are the difficult cases which prolong outage duration and increase the volume of radiological waste. Confronted with this situation, Electricite de France (EDF) has set up a national research group, as part of its ALARA program, to establish procedures and techniques to avoid, detect, and eliminate of hot spots. In particular, specific processes have been developed to eliminate these hot spots which are most costly in terms of occupational exposure due to the need for reactor maintenance. This paper sets out the general approach adopted at EDF so far to cope with the problem of hot spots, illustrated by experience at Blayais 3 and 4

EDF's experience with supercomputing and challenges ahead - towards multi-physics and multi-scale approaches

International Nuclear Information System (INIS)

Delbecq, J.M.; Banner, D.

2003-01-01

Nuclear power plants are a major asset of the EDF company. To remain so, in particular in a context of deregulation, competitiveness, safety and public acceptance are three conditions. These stakes apply both to existing plants and to future reactors. The purpose of the presentation is to explain how supercomputing can help EDF to satisfy these requirements. Three examples are described in detail: ensuring optimal use of nuclear fuel under wholly safe conditions, understanding and simulating the material deterioration mechanisms and moving forward with numerical simulation for the performance of EDF's activities. In conclusion, a broader vision of EDF long term R and D in the field of numerical simulation is given and especially of five challenges taken up by EDF together with its industrial and scientific partners. (author)

EDF group - annual report 2003; Groupe EDF - rapport annuel 2003

Energy Technology Data Exchange (ETDEWEB)

NONE

2004-07-01

This document contains the magazine, the financial statements and the sustainable development report of Electricite de France (EdF) group for 2003: 1 - the magazine (chairman's statement, group profile, vision and strategy); 2 - the consolidated financial statements for the period ended 31 December 2003 (statutory auditors' report on the consolidated financial statements, EDF's summary annual financial statements); 3 - sustainable development report (transparency and dialogue, responsibility, commitment, partnerships for progress). (J.S.)

Zinc injection on the EDF fleet monitoring the injection on 12 units

International Nuclear Information System (INIS)

Le-Meur, Gaelle Harmand; Anne-Marie; Stutzmann, Agnes; Taunier, Stephane; Benfarah, Moez; Bretelle, Jean-Luc; Alain, Rocher; Claeys, Myriam; Bonne, Sebastien

2012-09-01

After a first implementation of zinc injection at Bugey 2 and Bugey 4, EDF decided to extend the program to other units of its fleet. 14 more reactors from the French fleet of 58 were chosen in order to - Reduce the radiation sources for curative or preventive (after SGR) reasons - Mitigate stress corrosion cracking on nickel alloys and reduce the rate of generalized corrosion - Prevent the risk of CIPS, mainly after a fuel management change. Zinc injection started on 9 new units in 2011, 1 unit in 2012 and will be extended to 4 other units before the end of 2013. To monitor the injection, EDF has defined a complete program concerning chemistry, radiation protection (dose rate and deposited activities measurements), materials (statistical analysis of SG tube cracks), fuel (oxide measurements) and waste (radiochemical characterization of filters). Reference units were chosen for each field because of the size of the fleet. This paper will detail the different monitoring programs on the EDF plants injecting zinc. (authors)

EDF crippled by nuclear. Study of EDF's nuclear activity perspectives in France - November 2016

International Nuclear Information System (INIS)

Rodriguez, Juan Camilo

2016-11-01

After a discussion of the general context in terms of evolution of the energy market (over-capacity related to the development of renewable energies, limited export perspectives, low prices), of difficult position for the nuclear sector in Europe (an inadequate business model, shutting down of always more plants), of perspectives for EDF (a difficult passage from a monopoly to a competitive market, and a constraining legal framework), this study reports an assessment of EDF's assets. In the next part, it addresses issues related to dismantling and to waste management for French nuclear reactors. It describes the context, outlines that dismantling charges have been under-provisioned, and that assessments made for waste management are not completely reliable, and also discusses consequences in terms of accounting. The cost of future investments is then discussed, with also their consequences in terms of accounting. Financial consequences are finally discussed

New package systems for EDF recycling policy

International Nuclear Information System (INIS)

Leboucher, I.; Michels, L.; Hugon, F.C.; Penoty, C.; Froment, A.

2004-01-01

Since the beginning of the nineties, EDF (Electricite France) has been carrying out a policy towards increasing burn-up. As a consequence and to keep energetic performances of the MOX (Mixed OXide uranium and plutonium) fresh fuel assemblies at parity with UO2 fuel, the concentration in plutonium increased up to 7.1%, soon up to 8.65% and even more. To take into account the increased dose rate and the increased thermal power of these MOX fresh fuels in the transportation system, COGEMA LOGISTICS designed, manufactured and licensed the MX8 package to replace the previous packaging. Simultaneously new high-secured transport system was developed. Due to the capacity of the reactor pool, the spent fuel assemblies must be evacuated with a short cooling time and high residual power. Because of the neutron source of these future MOX spent fuel assemblies, the TN 12/2 packaging, which has been in operation since 1980's to transport UO2 or MOX spent fuel to COGEMA La Hague, from EDF, other European and Japanese NPP lacks flexibility. COGEMA LOGISTICS is designing a new cask (TN trademark 112) to transport the future EDF MOX spent fuel assemblies. The TN trademark 112 has to comply with the 1996 edition of the IAEA transport regulations and with the transport and handling equipment presently used for the transport of spent fuel in France. It can be loaded with 12 assemblies, either MOX or UO2. This paper gives a description of two packages belonging to the new generation: - one for fresh MOX fuel assemblies transportation, used on EDF's power plants for MOX reloads, - one for spent MOX fuel assemblies transportation, presently under development with a first transport planned for mid-2007

New package systems for EDF recycling policy

Energy Technology Data Exchange (ETDEWEB)

Leboucher, I.; Michels, L.; Hugon, F.C. [COGEMA Logistics (AREVA Group) (France); Penoty, C. [EDF - Electricite de France (France); Froment, A. [COGEMA (AREVA Group) (France)

2004-07-01

Since the beginning of the nineties, EDF (Electricite France) has been carrying out a policy towards increasing burn-up. As a consequence and to keep energetic performances of the MOX (Mixed OXide uranium and plutonium) fresh fuel assemblies at parity with UO2 fuel, the concentration in plutonium increased up to 7.1%, soon up to 8.65% and even more. To take into account the increased dose rate and the increased thermal power of these MOX fresh fuels in the transportation system, COGEMA LOGISTICS designed, manufactured and licensed the MX8 package to replace the previous packaging. Simultaneously new high-secured transport system was developed. Due to the capacity of the reactor pool, the spent fuel assemblies must be evacuated with a short cooling time and high residual power. Because of the neutron source of these future MOX spent fuel assemblies, the TNa12/2 packaging, which has been in operation since 1980's to transport UO2 or MOX spent fuel to COGEMA La Hague, from EDF, other European and Japanese NPP lacks flexibility. COGEMA LOGISTICS is designing a new cask (TN trademark 112) to transport the future EDF MOX spent fuel assemblies. The TN trademark 112 has to comply with the 1996 edition of the IAEA transport regulations and with the transport and handling equipment presently used for the transport of spent fuel in France. It can be loaded with 12 assemblies, either MOX or UO2. This paper gives a description of two packages belonging to the new generation: - one for fresh MOX fuel assemblies transportation, used on EDF's power plants for MOX reloads, - one for spent MOX fuel assemblies transportation, presently under development with a first transport planned for mid-2007.

EDF experience with {open_quotes}hot spot{close_quotes} management

Energy Technology Data Exchange (ETDEWEB)

Guio, J.M. de [Blayais Nuclear Power Plant, St. Ciers (France)

1995-03-01

During the past few years, {open_quotes}hot spots{close_quotes} due to the presence of particles of metal activated during their migration through the reactor core, have been detected at several French pressurized water reactor (PWR) units. These {open_quotes}hot spots,{close_quotes} which generate very high dose rates (from about 10 Gy/h to 200 G/h) are a significant factor in increase occupational exposures during outrates. Of particular concern are the difficult cases which prolong outage duration and increase the volume of radiological waste. Confronted with this situation, Electricite de France (EDF) has set up a national research group, as part of its ALARA program, to establish procedures and techniques to avoid, detect, and eliminate of hot spots. In particular, specific processes have been developed to eliminate these hot spots which are most costly in terms of occupational exposure due to the need for reactor maintenance. This paper sets out the general approach adopted at EDF so far to cope with the problem of hot spots, illustrated by experience at Blayais 3 and 4.

EDF PWRs primary coolant purification strategies

International Nuclear Information System (INIS)

Gressier, Frederic; Mascarenhas, Darren; Taunier, Stephane; Le-Calvar, Marc; Bretelle, Jean-Luc; Ranchoux, Gilles

2012-09-01

In order to achieve a good physico-chemical quality of the primary coolant fluid, the primary water is continuously treated by the Chemical and Volume Control System (CVCS). This system is composed of a treatment chain containing filters and ion-exchange resins. In the EDF design, an upstream filter is placed before the resin so as to prevent it from being saturated with insoluble particles. Then, the fluid passes through several resin beds (up to 3 depending on the configuration) and again through a downstream filter that prevents resin fines dissemination into the reactor coolant. Much work has been conducted in the last 5 years on the homogenisation of products and usage on French EDF NPP primary coolant treatment, while taking into account the compromise between source term reduction, liquid and solid waste, and buying and disposal costs. Two national markets have been created, and two operational documents for chemists on site have been published: a filtration guideline and an ion-exchange resin guideline. Both documents give general information about the products used, how are they characterized and selected for national market (technical requirements, standards and tests), how they should be used and what are the change-out criteria. They are also periodically updated based on feedback from sites. The positive impact on resin and filter lifetime (extension of some, limitation of others), homogenisation of products and usage will be presented. Moreover, EDF is constantly in the process of improving the current purification methods, as well as researching the use of existing and novel technologies. In this field, recent experiments on short loading of resin during reactor shutdown has been tested on site with success. In addition, work is done on silica free filters, filter consumption and filter chemical release. An overview of these optimization methods will be given. (authors)

Electronuclear reactors - EDF - Orientations of generic studies to be performed for the safety re-examination of 1300 MWe reactors associated to their third decennial inspection

International Nuclear Information System (INIS)

2011-01-01

This report expresses the ASN's opinion on the framework and objectives of the EDF program concerning the generic studies of the safety re-examination of the 1300 MWe reactors associated with their third decennial inspection. This comprises lessons from the Fukushima accident, the improvement of the 'internal explosion' referential by using a probabilistic study, the application of the seismic margin assessment approach as soon as possible, checking the absence of any 'cliff effect' for cooling functions, a deepened re-examination of hurricane frequencies in France. Other request by the ASN concern the verification of the pertinence of release authorizations, taking the TSN law into account, taking the AP1300 project into account, the expansion of the complementary domain, the project of reactor lifetime extension. Some technical requests are discussed in appendix

Nuclear Energy: A Competitive and Safe Option, The EDF Experience

International Nuclear Information System (INIS)

Colas, F.

1998-01-01

Today, nuclear energy seems challenged by fossil energies, especially gas. However, the 1997's French government survey over energy options still places nuclear energy at the top of the list. The reasons why and how safe nuclear energy is still competitive are detailed in this paper. Most recent data from EDF's reactor will be discussed in terms of environmental and electricity production issues. The methods and management used to attain these results are explained for the different phases: design, construction, operation, and maintenance. The beneficial aspects over industrial development and local employment will be underlined. The influence of nuclear energy on EDF's financial results are shown, from past programme to today's operation. As most of french reactors are designed to adapt their output to the changes of load in the national grid, results are, as a conclusion, discussed in a small and medium electrical grid perspective. (author)

EDF's experience with supercomputing and challenges ahead - towards multi-physics and multi-scale approaches

Energy Technology Data Exchange (ETDEWEB)

Delbecq, J.M.; Banner, D. [Electricite de France (EDF)- R and D Division, 92 - Clamart (France)

2003-07-01

Nuclear power plants are a major asset of the EDF company. To remain so, in particular in a context of deregulation, competitiveness, safety and public acceptance are three conditions. These stakes apply both to existing plants and to future reactors. The purpose of the presentation is to explain how supercomputing can help EDF to satisfy these requirements. Three examples are described in detail: ensuring optimal use of nuclear fuel under wholly safe conditions, understanding and simulating the material deterioration mechanisms and moving forward with numerical simulation for the performance of EDF's activities. In conclusion, a broader vision of EDF long term R and D in the field of numerical simulation is given and especially of five challenges taken up by EDF together with its industrial and scientific partners. (author)

2003 annual results of EdF group; Resultats annuels 2003 du groupe EDF

Energy Technology Data Exchange (ETDEWEB)

NONE

2004-03-01

The Electricite de France (EdF) group Board of Directors, meeting on March 11, 2004, under the Chairmanship of Francois Roussely, reviewed the audited consolidated financial statements for the year ended 12/31/2003. This document presents the consolidated results of EdF group for 2003: consolidated financial statements, highlights of the year, focus on 2003 events, commercial results, EDF in Europe and worldwide, EDF France highlights, key figures. (J.S.)

EDF, the 2003-2007 project; EDF, le projet 2003-2007

Energy Technology Data Exchange (ETDEWEB)

NONE

2005-07-01

This brochure presents the 2003-2007 project of Electricite de France (EdF) in the framework of the opening of European energy markets. The aim of this project is to take over the present day contract of EdF with the French government in order to become an anonymous company. The wish of F. Roussely, president of EdF, is to open and increase the capital of the company but also to fulfill its public utility missions. The stake of EdF is to stay competitive, to become a European energy leader, to stay an integrated company combining production, transport, distribution and commercialization, and finally to maintain its historical public utility standards: specific tariff conditions and services for low income people, financing of renewable energy projects. (J.S.)

Safety experience on EDF's PWRs

International Nuclear Information System (INIS)

Tanguy, P.

1986-01-01

The french nuclear programme has been widely publicized. In 1985, the total nuclear electricity generated was around 216 GWh, i. e. 70% of the electricity produced by electricity de France (EDF). If we consider only pressurized water reactors, at the end of 1985, 37 units were in operation (32 900 MWe and 5 1300 MWe) and 18 were under construction. I intend to review our experience with the safety of PWR's, but I will first present briefly some aspects related to the safety organization in France and the standardization policy. (author) [pt

Electronuclear reactors - EDF. Synthesis of study appraisal and of modifications associated with the safety re-examination of 1300 MWe reactors after 30 years of operation (VD3 1300)

International Nuclear Information System (INIS)

Bigot, Franck

2014-01-01

This report states the opinion of the IRSN on the adequacy of safety improvements adopted by EDF and of the update of the safety demonstration, as well as their consistency with guidelines defined for this safety re-examination; on the modalities defined by EDF to assess the compliance and status of installations (topics related to the ageing of containment enclosure and vessels being excluded); on the adequacy of the validation performed by EDF in terms of organisational and human factors for the whole set of modifications related to reactor ageing management and obsolescence management (notably those related to the modernisation of control rooms); on the acceptability of modifications declared by EDF in April 2014 on issues related to design, implementation and exploitation with respect to elements of the Code of the Environment. Thus, the report addresses: the safety demonstration update and adopted improvements (studies of operating conditions and their radiological consequences with respect to the different identified risks, design of systems which are important for safety and civil works components, aggressions with an external or internal origin, probabilistic safety studies), the installation compliance and status (decennial tests, program of additional investigations), the modernisation of the control room and social, organisational and human aspects, and equipment modifications. A table in appendix indicates the different topics of the VD 1300 safety re-examination, the associated published IRSN opinions and reports, and the associated ASN letters. Another appendix contains a set of recommendations regarding rules, methods and accident studies for the Safety Report, for the primary circuit dilution risks, for the radiological consequences of severe accidents, for the safety of the nuclear fuel stored in a pool, for the modernisation of the control room and the organisational and human factors, for equipment modifications, and for different parts of the

MOX and UOX PWR fuel performances EDF operating experience

International Nuclear Information System (INIS)

Provost, Jean-Luc; Debes, Michel

2005-01-01

Based on a large program of experimentations implemented during the 90s, the industrial achievement of new FAs designs with increased performances opens up new prospects. The currently UOX fuels used on the 58 EDF PWR units are now authorized up to a maximum FA burn-up of 52 GWd/t with a large experience from 45 to 50 GWd/t. Today, the new products, along with the progress made in the field of calculation methods, still enable to increase further the fuel performances with respect to the safety margins. Thus, the conditions are met to implement in the next years new fuel managements on each NPPs series of the EDF fleet with increased enrichment (up to 4.5%) and irradiation limits (up to 62 GWd/t). The recycling of plutonium is part of EDF's reprocessing/recycling strategy. Up to now, 20 PWR 900 MW reactors are managed in MOX hybrid management. The feedback experience of 18 years of PWR operation with MOX is satisfactory, without any specific problem regarding manoeuvrability or plant availability. EDF is now looking to introduce MOX fuels with a higher plutonium content (up to 8.6%) equivalent to natural uranium enriched to 3.7%. It is the goal of the MOX Parity core management which achieve balance of MOX and UOX fuel performance with a significant increase of the MOX average discharge burn-up (BU max: 52 GWd/t for MOX and UOX). The industrial maturity of new FAs designs, with increased performances, allows the implementation in the next years of new fuel managements on each NPPs series of the EDF fleet. The scheduling of the implementation of the new fuel managements on the PWRs fleet is a great challenge for EDF, with important stakes: the nuclear KWh cost decrease with the improvement of the plant operation performance. (author)

MOX use in PWRs. EDF operation experience

International Nuclear Information System (INIS)

Provost, Jean-Luc; Debes, Michel

2011-01-01

From the origin, EDF back-end fuel cycle strategy has focused on 'closing the fuel cycle', in other words integrating fuel reprocessing, with vitrification of high level waste concentrated within small volumes, and the recycling of valuable materials. The implementation of this policy was marked in 1987 by the first loading of sixteen MOX. By December 2010, 20 reactors have been loaded with 1750 tHM of MOX. EDF current strategy is to match the reprocessing program with MOX manufacturing capacity to limit the quantity of separated plutonium. This is routinely called the 'flow ad-equation' strategy. Currently, the MOX Parity core management achieves balance of MOX and UOX performance with a significant increase of the MOX discharge burn-up. Globally, the behavior under irradiation of MOX fuel assemblies has been satisfactory. So far, from the beginning of MOX use in EDF PWRs, only 6 MOX FAs with rod leakage have been identified, which gives a very satisfactory level of reliability. The industrial maturity of MOX fuel, with increased performances, allows the improvement of nuclear KWh competitiveness and of the plant operation performance, while maintaining in operation the same safety level, without significant impact on environment and radiological protection. (author)

Synthesis of the IRSN report on the management activities subcontracted by EDF in currently exploited pressurized water reactors. Opinion related to the management of activities subcontracted by EDF in currently exploited PWRs

International Nuclear Information System (INIS)

2015-01-01

A first document proposes a synthesis of an assessment performed by the IRSN which more particularly addressed how the client (EDF) takes up nuclear safety challenges, and its ability to transmit them to the subcontractor and assess the way he takes them up, how the subcontractor adopts these safety issues and translate them into an adapted technical action, the efficiency of information transmission from the subcontractor to the operator, and the way EDF takes the evolution and increase of activities into account in its subcontracting management strategy on the medium and long terms in relationship with modifications generated by recent measures (additional safety assessments, project of lifetime extension). Another document states the opinion of the permanent group of experts for nuclear reactors on these issues, and outlines some specific aspects (unit outage and maintenance planning, risk analysis, intervention preparation and monitoring, return on experience and improvement of the management of subcontracted activities, evolution and increase of activities). Some recommendations are also stated. A third document is a letter sent by the ASN on the same issues which discusses problems and issues related to subcontracting and has been the basis of the IRSN assessment

Seismic isolation of nuclear power plants - EDF's philosophy

International Nuclear Information System (INIS)

Coladant, C.

1989-01-01

The elastomer bearing pads used since 1963 as supports for prestressed concrete pressure vessels (PCPVs) was quickly chosen by Electricite de France (ED) to improve the capability of nuclear power plants (NPPs) to withstand strong earthquakes and to reduce the seismic loads on structures and equipment. The standardized units for 900 and 1,300 MW(e) pressurized water reactor (PWR) plants have moderate seismic design loads of 0.2 and 0.15 g, respectively. These design loads were exceeded by the site dependent spectra of Cruas (France) and Koeberg (South Africa). To keep the plant design unchanged and to take the advantages of standardization, these units were put on laminated bearings with or without sliding plates. For the future French 1,500 MW(e) fast breeder reactors (FBRs), which are more sensitive to seismic loads, the base isolation is considered by EDF at the beginning of the design, even for low ground motions of 0.1 g. The buildings are placed on laminated bearings while the reactor block is supported by springs and dampers. The isolated plant has identical costs as a conventional design such as SPX1 at Creys-Malville

2002 annual report EDF group; 2002 rapport annuel groupe EDF

Energy Technology Data Exchange (ETDEWEB)

NONE

2002-07-01

This document is the 2002 annual report of Electricite de France (EdF) group, the French electric utility. Content: Introductory section (EDF at a glance, Chairman's message, 2002 Highlights); Corporate governance and Group strategy (Corporate governance, sustainable growth strategy, EDF branches); Financial performance (Reaching critical mass, Margins holding up well, Balance sheet); Human resources (Launching Group-wide synergies, Optimising human resources); Customers (Major customers, SMEs and professional customers, Local authorities, Residential customers, Ensuring quality access to electricity); Generation (A balanced energy mix, Nuclear generation, Fossil-fuelled generation, Renewable energies); Corporate social responsibility (Global and local partnerships, Promoting community development)

2002 annual report EDF group; 2002 rapport annuel groupe EDF

Energy Technology Data Exchange (ETDEWEB)

NONE

2002-07-01

This document is the 2002 annual report of Electricite de France (EdF) group, the French electric utility. Content: Introductory section (EDF at a glance, Chairman's message, 2002 Highlights); Corporate governance and Group strategy (Corporate governance, sustainable growth strategy, EDF branches); Financial performance (Reaching critical mass, Margins holding up well, Balance sheet); Human resources (Launching Group-wide synergies, Optimising human resources); Customers (Major customers, SMEs and professional customers, Local authorities, Residential customers, Ensuring quality access to electricity); Generation (A balanced energy mix, Nuclear generation, Fossil-fuelled generation, Renewable energies); Corporate social responsibility (Global and local partnerships, Promoting community development)

Optimization of the decontamination in EDF PWR power plants

International Nuclear Information System (INIS)

Gosset, P.; Dupin, M.; Buisine, D.; Buet, J.F.; Brunel, V.

2002-01-01

The optimisation of decontamination in EDF PWR power plants is the result of a permanent collaborative work between the plant operators, the subcontractors, central services of nuclear power division of EDF. This collaborative work enables the saving of all the feedback experience. The main operations carried out on nuclear sites like mechanical decontamination of valves, use of the ''EMMAC'' process on big components (replacement of steam generator, hydraulic parts of the reactor coolant pumps), use of foam on pools walls and divers in highly contaminated pools have been discussed. This paper shows that the choice of decontamination processes is very dependant on the components, on the dose rate reduction to be aimed and on the possibility to treat the waste on site. (authors)

EDF source term reduction project main outcomes and further developments

International Nuclear Information System (INIS)

Ranchoux, Gilles; Bonnefon, Julien; Benfarah, Moez; Wintergerst Matthieu; Gressier, Frederic; Leclercq, Stephanie

2012-09-01

The dose reduction is a strategic purpose for EDF in link with the stakes of, nuclear acceptability, respect of regulation and productivity gains. This consists not only in improving the reactor shutdown organization (time spent in control area, biological shielding,...) but also in improving the radiological state of the unit and the efficiency of the source term reduction operations. Since 2003, EDF has been running an innovative project called 'Source Term Reduction' federating the different EDF research and engineering centers in order to: - participate to the long term view about Radiological Protection issues (international feedback analyses), - develop contamination prediction tools (OSCAR software) suitable for the industrial needs (operating units and EPR design), - develop scientific models useful for the understanding of contamination mechanisms to support the strategic decision processes, - carry on with updating and analyzing of contamination measurements feedback in corrosion products (EMECC and CZT campaigns), - carry on with the operational support at short or middle term by optimizing startup and shutdown processes, pre-oxidation or and by improving purification efficiency or material characteristics. This paper will show in a first part the main 2011 results in occupational exposure (collective and individual dose, RCS index...). In a second part, an overview of the main EDF outcomes of the last 3 years in the field of source term reduction will be presented. Future developments extended to contamination issues in EDF NPPs will be also pointed out in this paper. (authors)

China: the construction of the Taishan number 1 EPR reactor reaches a major milestone with the setting of the vessel

International Nuclear Information System (INIS)

Anon.

2012-01-01

This article describes some characteristics of the reactor vessel which has recently been introduced in the building of the number 1 EPR reactor of Taishan in China; the construction of this EPR reactor is coordinated by EDF, CGNPC and Areva. It also briefly describes how this introduction has been performed, and evokes the fabrication quality issues and tests

New EdF's three challenges

International Nuclear Information System (INIS)

Lepetit, V.

2005-01-01

The opening of 15% of Electricite de France (EdF) capital to the private sector will allow the first world electric utility to raise 7 billions of euros of cash flow. EdF will have also to face the new European situation: a strained market, several consolidations to come and many competitors to deal with. EdF has to re-launch its production tool and to reinforce its interconnection capacities if it wants to stay the number one of power exports in Europe. The integration of Edison company (Italy) by EdF gives access to new gas capacities but other resources have to be found if EdF wants to enlarge its gas offer. A new concentration era is foreseen in Europe and EdF will have to seize the economic growth opportunities in particular in Europe and China. (J.S.)

Monitoring of large rotating machines at EDF

International Nuclear Information System (INIS)

Chevalier, R.; Oswald, G.P.; Morel, J.

1993-09-01

The purpose of equipment surveillance is the prevention of major risks, the early detection of abnormal conditions and post-incident analysis to correct faults observed. At EDF, overall vibration monitoring in the control room was supplemented by a special vibration monitoring system. However, in order to satisfy more elaborate, real time detection requirements and benefit from the new possibilities offered by computer-based systems, EDF has developed the PSAD concept (Surveillance and Diagnosis-aid Station) which groups surveillance processing, organized on surveillance functions including turbogenerator and reactor coolant pump surveillance. The purpose of the present paper is to describe the turbogenerator and reactor coolant pump surveillance functions and present the first examples of reactor coolant pump behaviour feedback using a PSAD mockup (Automated Surveillance of Rotating Machines). In the first place, surveillance implies determining exactly what has to be monitored. This entails considering incidents liable to affect machine behaviour and, of course, specifying both the vibration quantities and those defining the operating condition of the machine considered which are necessary to be able to interpret the vibrations. Data processing requirements concern detection of faults and diagnosis aids. Faults detection must be automatic, but not the diagnosis function. Data can be processed to evidence one or several faults, using the most appropriate data display system. Interpretation is then entrusted to experts. To satisfy the above requirements, the PSAD system integrates two new concepts: distributed surveillance, involving depth distribution (different layers of software organized for increasingly sophisticated and gradually narrowing data processing) and space distribution (the work is performed in the most appropriate place, whether this be the plant, with automatic real time processing, or elsewhere if the complexity of the diagnosis so requires

EdF speaks about economic advantages of fuel reprocessing as compared with interim storage

International Nuclear Information System (INIS)

Anon.

1997-01-01

The French company Electricite de France (EdF) will prefer nuclear fuel reprocessing and plutonium recycling to spent fuel storage also in the years after 2000. This option is economically advantageous if the proportional cost of reprocessing does not exceed 1900 FRF/kg heavy metal. Economic analysis shows that this is feasible. EdF will soon have to reprocess annually about 1000 Mt spent fuel to supply enough plutonium for MOX fuel fabrication to feed as many as 28 PWR units and the Superphenix reactor. Spent fuel reprocessing is seen as promising as long as the efficiency of the MOX fuel approaches that of natural uranium based fuel. The French national industrial, political and legal context of EdF operations is also considered. (P.A.)

EDF group - annual report 2003

International Nuclear Information System (INIS)

2004-01-01

This document contains the magazine, the financial statements and the sustainable development report of Electricite de France (EdF) group for 2003: 1 - the magazine (chairman's statement, group profile, vision and strategy); 2 - the consolidated financial statements for the period ended 31 December 2003 (statutory auditors' report on the consolidated financial statements, EDF's summary annual financial statements); 3 - sustainable development report (transparency and dialogue, responsibility, commitment, partnerships for progress). (J.S.)

EDF: net profits are up by 56% in 2004. RTE: a year of change

International Nuclear Information System (INIS)

Anon.

2005-01-01

EDF has presented its financial results for 2004: a net profit of 1.3 milliard euros (+56%) and a debt reduced by 5 milliards euros. The turnover reached 46,9 milliard euros (+4.5%) but its capital was reduced drastically from 19 to 8.4 milliard euros because of both the reform of the funding of the retirement pension system and the implementation of new European accountancy norms. For the first time all foreign subsidies of EDF (except those in South-America) have contributed to the profit. EDF foresees to launch an important investment program in 2005 that will involve: the construction of an EPR (European pressurized reactor) on the Flamanville site and the construction of 6 fossil-fueled power plants. The turnover of RTE (the state company that manages the French electricity transport network) reached 4.029 milliard euros which is the same figure as the previous year but its net profit jumps by 25% to reach 347 million euros. RTE has announced that the exchanges at the borders (import and export) have increased from 113 TWh (in 2003) to 119 TWh (in 2004) which betokens a more and more dynamical European electricity market. RTE has also announced that the construction works of the 150-200 km long high voltage power line that will link the new EPR reactor at Flamanville to the national power transmission network will begin near 2010. (A.C.)

The photovoltaic ambitious of EDF

International Nuclear Information System (INIS)

Houot, G.

2008-01-01

Added to the wind energy, EDF develops the photovoltaic by its subsidiaries EDF Energies Nouvelles, for the big power plants and EDF Energies Nouvelles Reparties centralized on the market of small installations for roofs. The author analyzes the society management and project concerning the photovoltaic development. (A.L.B.)

Definition of a post-Fukushima hard core for EDF's PWRs: objectives, content and associated requirements

International Nuclear Information System (INIS)

2014-01-01

After having recalled the implementation of the additional safety assessments (ECS) on the French nuclear reactors after the Fukushima accident, and that, after these assessments, ASN asked EDF to implement a 'hard core of robust material and organisational measures' which aim at preventing an accident with a core fusion or at limiting its progress, at limiting massive radioactive releases, and at enabling the operator to perform his required missions in crisis management, this report indicates the objectives of this hard core, and discusses the material measures proposed by EDF. These measures concern the exploited reactors and the EPR Flamanville 3, the pools present in the fuel and reactor buildings. It also discusses the requirements associated with these material measures, notably with respect to earthquake, flooding or other extreme events

EDF Energies Nouvelles - 2010 Registration Document

International Nuclear Information System (INIS)

2011-01-01

EDF Energies Nouvelles is a world leader in renewable energy electricity. The company develops, builds and operates clean energy power plants both for its own account and for third parties. Historically, EDF Energies Nouvelles primarily developed its business in two geographical areas, Europe and North America (U.S., Canada and Mexico). EDF Energies Nouvelles is a subsidiary of EDF, helping the Group to achieve its renewable energy goals. The EDF Group generates low-carbon electricity around the world and actively participates in the energy transition. EDF Energies Nouvelles prioritizes development of wind and photovoltaic solar capacity. As an integrated operator with global reach, EDF Energies Nouvelles covers the entire renewable energy chain, from development to operation and maintenance, and manages all project phases in-house. This document is EDF Energies Nouvelles' registration document for the year 2010. It contains information about Group profile, governance, business, investments, property, plant and equipment, management, financial position, employees, shareholders, etc. The document includes the half-year and full year financial reports

The public utility contract between the French government and EDF; Le contrat de service public entre l'Etat et EDF

Energy Technology Data Exchange (ETDEWEB)

NONE

2005-07-01

The public utility contract as foreseen by article 1 of the law from August 9, 2004 was signed on October 24, 2005. It represents the reference of EDF's (Electricite de France) commitments for its different activities of power producer-supplier and network manager. It precises also the commitments of the manager of the public energy transportation system (RTE EDF-Transport). It describes the level of commitment of EDF group over the 2005-2006-2007 era and precises the financial compensation modalities of its public utility missions and of its commitments as described in the contract. The public utility plan indicates the level of investments planned by EDF in the domain of power generation and networks. This document gathers: the talk given by D. de Villepin, Prime Minister, during the signature of the contract, the talk and presentation (slides) given by P. Gadonneix, head of EDF, the public utility contract between the government and EDF, and the public utility plan. (J.S.)

Zinc injection on the EDF pressurized light water reactors. Current results and operating experience feedback

International Nuclear Information System (INIS)

Piana, Olivier; Duval, Arnaud; Moleiro, Edgar; Benfarah, Moez; Bretelle, Jean-Luc; Chaigne, Guy

2014-01-01

Nowadays, zinc injection, as well as pH management and hydrogen control, is increasingly considered as an essential element of PWR Primary Water Chemistry worldwide. After a first implementation of zinc injection at Bugey 2 since 2004 and Bugey 4 since 2006, EDF decided to extend this practice, which constitutes a modification of primary circuit chemical conditioning, to other units of its fleet. Currently, 15 among the 58 reactors of the French fleet are injecting depleted zinc acetate into the primary coolant water. Three main goals were identified at the beginning of this program. Indeed, the expected benefits of zinc injection were: Reduction of the rate of generalized corrosion and mitigation of stress corrosion cracking initiation on nickel based alloys (Material goal). Curative or preventive reduction of radiation sources to which workers are exposed (Radiation fields' goal). Mitigation of the AOA or CIPS risks by reduction of corrosion products releases and mitigation of crud deposition (Fuel protection goal). To monitor the zinc addition, EDF has defined a complete survey program concerning: chemistry and radiochemistry responses (primary coolant monitoring of corrosion and fission products and calculation of zinc injected, zinc removed and zinc incorporated in RCS surfaces) ; radiation fields (dose rates and deposited activities measurements) ; materials (statistical analysis of SG tube cracks) ; fuel (oxide thickness measurements and visual exams) ; effluents (corrosion products releases and isotopic distribution follow up) ; wastes (radiochemical characterization of filters). This paper will detail the present results of this monitoring program. It appears that the expected benefits of zinc injection have yet to be fully realized; further operating experience will be required in order to fully evaluate its impact. (author)

EDF Group - Annual Report 2009

International Nuclear Information System (INIS)

2010-01-01

The EDF Group is a leading player in the energy industry, active in all areas of the electricity value chain, from generation to trading and network management, with expanding operations in the natural gas chain. It has a sound business model, evenly balanced between regulated and deregulated activities. The EDF Group is the leader in the French and British electricity markets and has solid positions in Germany and Italy and numerous other European countries, as well as industrial operations in Asia and the United States. Everywhere it operates, the EDF Group is a model of quality public service for the energy sector. With fi rst-rate human resources, R and D capability and generation expertise in nuclear, fossil-fired and renewable energies, particularly hydro, together with energy eco-efficiency offers, the EDF Group delivers competitive solutions that help ensure sustainable economic development and climate protection. This document is EDF Group's annual report for the year 2009. It contains information about Group profile, governance, business, development strategy, sales and marketing, positions in Europe and international activities. The document is made of several reports: the Activity and Sustainable Development Report, the Financial Report, the Management Report, the Report by the Chairman of EDF Board of Directors on corporate governance and internal control procedures, the Milestones report, the 'EDF at a glance' report, and the Sustainable Development Indicators

EDF nuclear fuel cycle: report for the HCTISN meeting on the 20 of November 2009

International Nuclear Information System (INIS)

2009-01-01

The first part of this report describes the different steps of the EDF fuel cycle and the associated flows: overview, description of each step (natural uranium mines, enrichment, fabrication, production in reactors, processing, recycling). The second part deals with valuable materials and wastes (history of waste flows since 1994, MOX flows since 1994). It presents supply sources and flows (diversification to ensure supply safety, flows among different supply steps) and actions performed by EDF to promote information. Some propositions are given to improve information

EDF reactor building containment: Monitoring of the pre-stressed concrete structure

International Nuclear Information System (INIS)

Badez, N.

2009-01-01

The concrete containments of the EDF PWR are pre-stressed, and are monitored to observe the ageing effects on the structure, in particular the evolutions of creep, shrinkage, pre-stress loss, and air leakage tightness. Monitoring devices are installed during construction period, and measurements are checked, stored on a data base, and analysed during all the plant operating life time. The topic of the presentation is to present each part of the EDF monitoring organisation. A continuous monitoring makes it possible to produce periodical comprehensive reports about the mechanical analysis of the structure, the strain stabilisation,... Periodical tests (each 10 years) are planned. They consist to submit the containment to an internal air pressure at the accidental pressure level. The monitoring system gives the strain values in order to check their linearity and reversibility with decreasing pressure. At the same time, the containment tightness is checked with a specific instrumentation to verify that leak rate is lower than the required level. A general view of instrumentation implemented on the containment (sensors, data acquisition), and a data analysis are presented

EDF fragment relocation model based on the displacement of rigid bodies

International Nuclear Information System (INIS)

Callu, C.; Baron, D.; Ruck, J.M.

1997-01-01

In order to release the restricting conditions imposed to the reactor operations with regards to PCMI (Pellet-Cladding Mechanical Interaction), the simulation of a fuel rod thermomechanical behavior has to be improved. The computer programming has to cope with the more and more sophisticated mathematical modellings induced by the complexity and the interdependence of the phenomena. Therefore EDF is developing a new code - CYRANO3 - since 1990 putting emphasis on its evolution capacities. Concerning more precisely the PCMI simulation, the pellet fragmentation and the fragments relocation is one of the major aspect one must account for. Thanks to recent analytical experiments, EDF developed a new modelling based on the displacement of rigid bodies and on the calculation of the interaction efforts between the fragments. This paper presents the basis of the model, its introduction within the CYRANO3 code and its calibration on a specific analytical experiment. The modelling is then tested against PWR fuel rods deformations from the EDF data base. The results are presented and discussed. (author)

Hearing of Mr. Francois Roussely, President of EdF; Audition de M. Francois Roussely, President d'EdF

Energy Technology Data Exchange (ETDEWEB)

Roussely, F. [Electricite de France (EDF), 75 - Paris (France)

2005-07-01

This document is the proceedings of the hearing of F. Roussely, President of Electricite de France (EdF), at the commission of economic affairs of the French house of commons, about the advisability of the construction of the EPR (European pressurized reactor) demonstration plant and about its possible financing by EdF. In a first part, F. Roussely recalls the European context of deregulation of energy markets and its impact of the French electric power industry (opening of the French market, industrial and social actions of EdF, need of a new generation of nuclear reactor, preservation of EdF's energy mix, warranty of public utility, un-bundling between energy trade and distribution, EdF's turnover and profitability, EdF's foreign daughter companies). In a second part, F. Roussely answers a series of questions asked by the different members of the commission concerning the different points presented in the first part. (J.S.)

Propagation of epithermal neutrons in the empty mesh of the EDF3 reactor. Application of Zeus IV

International Nuclear Information System (INIS)

Brisbois, Jacques; Sonnet, Alain; Rafalovitch, Armand

1969-10-01

The authors report the verification of the Zeus 4 Monte Carlo code by applying it to an actual example of neutron propagation in a large enclosure, the empty mesh of the EDF3 reactor, supplied through the box holes (for the passage of heat transfer fluid ducts). This enclosure is represented by 105 parallelepipedic meshes in which are placed 4 plane and square sources of same cross section as the holes, and emitting inwards in cos θ. Source intensity is determined by flow rate measurements during tests in the air, interpreted by a Zeus-based calculation and channel power measurements during a 387 MW level operation. The presence of ducts is taken into account by applying a global attenuation coefficient to the sources. Calculation and experiment results agree very well in view of geometry complexity [fr

The Flamanville 3 EPR reactor; Le reacteur EPR Flamanville 3

Energy Technology Data Exchange (ETDEWEB)

NONE

2007-07-01

On April 10. 2007, the french government authorized EDF to create on the site of Flamanville ( La Manche) a nuclear base installation containing a pressurized water EPR type reactor. This nuclear reactor, conceived by AREVA NP and EDF, is the first copy of a generation susceptible to replace later, at least partly, the French nuclear reactors at present in operation.Within the framework of its mission of technical support of the Authority of Nuclear Safety ( A.S.N.), the I.R.S.N. widely contributed successively: to define the general objectives of safety assigned to this new generation of pressurized water nuclear reactors; to analyze the options of safety proposed by EDF for the EPR project; To deepen, upstream to the authorization of creation, the evaluation of the step of safety and the measures of conception retained by EDF that have to allow to respect the objectives of safety which were notified to it. (N.C.)

The great refit of the EDF nuclear fleet and post-Fukushima actions. An ambition to extend to 50 or 60 years the exploitation of reactors

International Nuclear Information System (INIS)

Tonnac, Alain de; Perves, Jean-Pierre

2014-01-01

The great refit of the EDF nuclear fleet aims at extending the service lifetime of nuclear reactors. If the extension to 40 years is well undertaken, an extension to 50 or 60 years could only be approved after a return on experience of the Fukushima accident and possible additional requests made by the ASN in reference to facilities ageing. The authors first recall some elements related to the Fukushima accident and outline the fact that the possibility of such a strong tsunami had not been taken in to account by the operator (as it had been for a neighbouring nuclear power station, Onagawa). They also highlight the differences between Japan and France in terms of organisation of the nuclear industry. They also outline technical differences in the design of power stations. Thus, the first lessons learned from the accident seem to support French options. They discuss the evolutions which however are planned for the French nuclear stations after the Fukushima accident. Then, the authors present the great refit and the issue of the extension of the service lifetime of the EDF nuclear fleet. This project is presented as a major challenge for EDF, and implies a management of expenses. They outline the good level of French energy production with respect to greenhouse gas emissions, and briefly discuss the issue of competitiveness for renewable energies

The French Electricity Company (EDF) and the environment. Press file for 1996; EDF et l'environnment 1996. Dossier de presse

Energy Technology Data Exchange (ETDEWEB)

Bourdier, Jean-Pierre [Electricite de France (EDF), 75 - Paris (France)

1997-03-27

In 1996 the actions of EDF in the domain of environment have recorded FF 4 billions (FF 3.5 billion in 1995), representing about 2% of the EDF's turnover. The EDF keeps on its efforts for reducing the impact of its activities upon environment. Several applications of an environment protective electricity generation are promoted by the company. The company brings services and technical solutions to its clients which meet their energy needs and conserving at the same time the life conditions. Furthermore, EDF participates in the activity of numerous national and international organisms, intervening in the environmental questions, in decision making, participating in studies and actions and following continually the direction of a durable economic and social development. The report is structured in three chapters: 1. an industrial responsibility; 2. services and techniques for environment; 3. action towards a durable development.

Digital technology strengthens EDF's nuclear safety

International Nuclear Information System (INIS)

Dupin, Ludovic

2016-01-01

This article proposes an overview of the development of the use of various and new digital technologies of information and communication by EDF to train its nuclear operators, field technicians who are maintaining nuclear power plants, personnel in charge of risk management, and so on. Trainees are using tablets with augmented reality software, serious games, virtual reality helmets, and also digital simulators to learn how to control a reactor. More practical training also exists: people are taught how to practically and correctly assemble tubes for example

On-site emergency preparedness and response PLAN for EDF Nuclear Power Plants

International Nuclear Information System (INIS)

BOSSARD, J. L.

1997-01-01

Considering nuclear safety concepts applied to reactor design and preventive measures taken by EDF during operation, and although the probability of a nuclear accident, even minor, on a unit is very low, it still cannot be considered nil. Therefore, the operator must be prepared, if such an event should occur, by defining and implementing a 'crisis organisation' in cooperation with the Safety Authorities. The crisis organisation has been set up in order to master and control the accident, i.e. in order to prevent, in real time, the accident developing into a more serious situation and to limit the consequences regarding technical and radiological concerns. EDF crisis organisation is integrated into the current organisation at local level as well as at national level. In addition to the operation team in 'shifts', crisis organisation is based 'on-call' personnel available at home (local level) or within a restricted area (national level). This organisation includes Managers, Experts, Participants EDF (+FRAMATOME), each of the them working, in case of an emergency, in his field of skills

EDF, the 2003-2007 project

International Nuclear Information System (INIS)

2005-01-01

This brochure presents the 2003-2007 project of Electricite de France (EdF) in the framework of the opening of European energy markets. The aim of this project is to take over the present day contract of EdF with the French government in order to become an anonymous company. The wish of F. Roussely, president of EdF, is to open and increase the capital of the company but also to fulfill its public utility missions. The stake of EdF is to stay competitive, to become a European energy leader, to stay an integrated company combining production, transport, distribution and commercialization, and finally to maintain its historical public utility standards: specific tariff conditions and services for low income people, financing of renewable energy projects. (J.S.)

Which life expectancy for EDF reactors?

International Nuclear Information System (INIS)

Carlier, P.; Fluchere, J.; Giraud, B.; Poizat, F.

2008-01-01

After having recalled that the French nuclear reactors have been designed for a 40-year long life with a 30-year depreciation, the authors notice that foreign reactors which are identical or older get a 60 year operation authorization. The authors analyse the age of the nuclear reactors which are currently operating in the world, in terms of age, of country. They also discuss the license renewal process in the USA. In the next part they analyse the conditions of a life extension to 60 years. These conditions concern material monitoring, maintenance strategy for the replacement of components, the condition of installations, personnel management and behaviour. Appendices contain a table of operating reactors which are still being operated and more than 30 year old, the status of license renewal applications to the US NRC

2003 annual results of EdF group

International Nuclear Information System (INIS)

2004-03-01

The Electricite de France (EdF) group Board of Directors, meeting on March 11, 2004, under the Chairmanship of Francois Roussely, reviewed the audited consolidated financial statements for the year ended 12/31/2003. This document presents the consolidated results of EdF group for 2003: consolidated financial statements, highlights of the year, focus on 2003 events, commercial results, EDF in Europe and worldwide, EDF France highlights, key figures. (J.S.)

Developments in natural uranium - graphite reactors

International Nuclear Information System (INIS)

Bourgeois, J.

1964-01-01

The French natural uranium-graphite power-reactor programme has been developing - from EDF 1 to EDF 4 - in the direction of an increase of the unit power of the installations, of the specific and volume powers, and of an improvement in the operational security conditions. The high power of EDF 4 (500 MWe) and the integration of the primary circuit into the reactor vessel, which is itself made of pre-stressed concrete, make it possible to make the most of the annular fuel elements already in use in EDF 1, and to arrive thus at a very satisfactory solution. The use of an internally cooled fuel element (an annular element) has led to a further step forward: it now becomes possible to increase the pressure of the cooling gas without danger of causing creep in the uranium tube. The use of a pre-stressed concrete vessel makes this pressure increase possible, and the integration of the primary circuit avoids the risk of a rapid depressurization which would be in this case a major danger. This report deals with the main problems presented by this new type of nuclear power station, and gives the main lines of research and studies now being carried out in France. - Neutronic and thermal research has made it possible to consider using large size fuel elements (internal diameter = 77 mm, external diameter 95 mm) while still using natural uranium. - The problems connected with the production of these elements and with their in pile behaviour are the subject of a large programme, both out of pile and in power reactors (EDF 2) and test reactors (Pegase). - The increase in the size of the element leads to a large lattice pitch (35 to 40 cm). This makes it possible to consider having one charging aperture per channel or for a small number of channels, whether the charge machine be inside or outside the pressure vessel. In conclusion are given the main characteristics of a project for a 500 MWe power station using such a fuel element. In particular this project is compared to EDF 4

ASN takes position in the in-service follow-up programs of primary and secondary loops of EdF's nuclear power plants

International Nuclear Information System (INIS)

2002-01-01

This decision from the French authority of nuclear safety (ASN) aims at fixing the conditions to be respected by Electricite de France (EdF) during its in-service follow-up programs for the monitoring and preventive maintenance of the primary and secondary cooling loops of EdF's PWR reactors. The components and the particular points to be controlled are listed in appendixes. (J.S.)

The public utility contract between the French government and EDF

International Nuclear Information System (INIS)

2005-01-01

The public utility contract as foreseen by article 1 of the law from August 9, 2004 was signed on October 24, 2005. It represents the reference of EDF's (Electricite de France) commitments for its different activities of power producer-supplier and network manager. It precises also the commitments of the manager of the public energy transportation system (RTE EDF-Transport). It describes the level of commitment of EDF group over the 2005-2006-2007 era and precises the financial compensation modalities of its public utility missions and of its commitments as described in the contract. The public utility plan indicates the level of investments planned by EDF in the domain of power generation and networks. This document gathers: the talk given by D. de Villepin, Prime Minister, during the signature of the contract, the talk and presentation (slides) given by P. Gadonneix, head of EDF, the public utility contract between the government and EDF, and the public utility plan. (J.S.)

EDF's dismantling experience

International Nuclear Information System (INIS)

Mira, J.J.

1993-01-01

The dismantling policy at EDF, taking into account technical, economical and socio-political factors, is presented. The various current realizations are reviewed and their dismantling solution discussed: Chinon A2, Chinon A1, Marcoule G1, G2, G3, Brennilis (EL4). Several dismantling projects are also described (Chinon A3, St-Laurent A1-A2, Chooz A). The various dismantling operations are presented and scheduled

The French Electricity Company (EDF) and the environment. Press file for 1996; EDF et l'environnment 1996. Dossier de presse

Energy Technology Data Exchange (ETDEWEB)

Bourdier, Jean-Pierre [Electricite de France (EDF), 75 - Paris (France)

1997-03-27

In 1996 the actions of EDF in the domain of environment have recorded FF 4 billions (FF 3.5 billion in 1995), representing about 2% of the EDF's turnover. The EDF keeps on its efforts for reducing the impact of its activities upon environment. Several applications of an environment protective electricity generation are promoted by the company. The company brings services and technical solutions to its clients which meet their energy needs and conserving at the same time the life conditions. Furthermore, EDF participates in the activity of numerous national and international organisms, intervening in the environmental questions, in decision making, participating in studies and actions and following continually the direction of a durable economic and social development. The report is structured in three chapters: 1. an industrial responsibility; 2. services and techniques for environment; 3. action towards a durable development.

Forced transitions for EDF: the EDF ship facing head-winds; Dalkia, the renewable trump card to be valorized

International Nuclear Information System (INIS)

Barbaux, Aurelie

2018-01-01

Electricite de France (EDF), the state-owned and main power producer in France is, as the Titanic liner, lacking agility to navigate into the wild seas of the French energy transition policy. Besides, the era of engineers that construct energy cathedrals and of nuclear full supremacy is now well over, giving the way to innovative management policies with workers participation and digitalisation. EDF is preparing a new strategy addressing market opening and deregulation, renewable energy sources, and more freedom for EDF's numerous subsidiary companies. A second paper precisely concerns Dalkia, one of EDF's subsidiaries which is specialized in energy efficiency, heat and cold generation and networks that are more and more supplied by renewable energies. A third paper addresses EDF-SEI, whose specialty is energy autonomy in isolated areas (islands, etc.)

EDF's fiftieth anniversary

International Nuclear Information System (INIS)

Spann, L.

1996-01-01

During its half-century of existence, EdF (Electricite de France) has carried out an impressive productivity effort. The company, the manpower of which has remained practically the same from the beginning, produces today 22 times more kW per hour than in 1946. In 1995, the French production of electric power reached 442.2 TWh, which corresponds to a 3.9 % increase with respect to the previous year. This production corresponds to a 99000 MW installed capacity of nuclear (59 %), thermal (17 %) and hydraulic (24 %) origin, respectively. This example illustrates the success of EdF, which is considered as ''the result of a huge technical and industrial adventure'' said Franck Borotra, French Ministry of Industry, Post and Telecommunications. This paper comprises three parts. The first part describes some historical and political aspects of the creation and development of the company with the building of several hydro-electric dams up to 1957, the starting of the nuclear program in 1973-74 during the petroleum crisis, the new goals and the evolution of the company inside the European Community. The second part describes the political, ecological and financial controversy about the Saone-Rhine rivers connection project, in which EdF is involved, and which would allow a 15 times increase of the rivers transportation capacity. The last part is a comparative summary of EdF's 1994 and 1995 balance sheet of production, financing, expenditures, trade, contracts etc.. (J.S.). 2 photos

2002 annual report EDF group

International Nuclear Information System (INIS)

2002-01-01

This document is the 2002 annual report of Electricite de France (EdF) group, the French electric utility. Content: Introductory section (EDF at a glance, Chairman's message, 2002 Highlights); Corporate governance and Group strategy (Corporate governance, sustainable growth strategy, EDF branches); Financial performance (Reaching critical mass, Margins holding up well, Balance sheet); Human resources (Launching Group-wide synergies, Optimising human resources); Customers (Major customers, SMEs and professional customers, Local authorities, Residential customers, Ensuring quality access to electricity); Generation (A balanced energy mix, Nuclear generation, Fossil-fuelled generation, Renewable energies); Corporate social responsibility (Global and local partnerships, Promoting community development)

EDF Group - Annual Report 2010

International Nuclear Information System (INIS)

2011-01-01

The EDF Group is one of the world's leading energy companies, active in all areas from generation to trading and network management. It has a sound business model, evenly balanced between regulated and deregulated activities. With its first-rate human resources, R and D capability, expertise in engineering and operating generation plants and networks, as well as its energy eco-efficiency offers, the Group delivers competitive solutions that help ensure sustainable economic development and climate protection. The EDF Group is the leader in the French and UK electricity markets and has solid positions in Italy and numerous other European countries, as well as industrial operations in Asia and the United States. Everywhere it operates, the Group is a model of quality public service for the energy sector. This document is EDF Group's annual report for the year 2010. It contains information about Group profile, governance, business, development strategy, sales and marketing, positions in Europe and international activities. The document is made of several reports: the Activity and Sustainable Development Report, the Financial Report, the Management Report, the Report by the Chairman of EDF Board of Directors on corporate governance and internal control procedures, the Milestones report, the 'EDF at a glance' report, and the Sustainable Development Indicators

The ASN imposes on EDF complementary requirements for the setting of the hard-core unit

International Nuclear Information System (INIS)

Anon.

2014-01-01

In January 2014, the ASN (French Authority for Nuclear Safety) published a list of 19 decisions concerning the implementation of a 'post-Fukushima' hard-core unit in each EDF nuclear power plant. The purpose of the hard-core unit is to have structures and equipment able to resist very extreme events and able to assure the vital functions necessary for the reactor safety. The 19 decisions detail the rules for the design of the hard-core unit. For example the hard-core unit will have to resist earthquakes for which the probability of occurrence is about 1 every 20.000 years while the probability taking into account for the design of the reactor is only 1 every 1000 or 10.000 years

EDF group - Reference Document 2006

International Nuclear Information System (INIS)

2007-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and holds strong positions in the other three principal European markets (Germany, the United Kingdom, Italy) making it one of the leading electricity groups in Europe, and a recognized actor in the gas market. With an installed capacity of 123.7 GW in Europe (128.2 GW worldwide) it holds, among the major European energy specialists, the largest production fleet and the one emitting the least CO 2 , owing to the share of nuclear technology and hydropower in its generation mix. The EDF group supplies electricity, gas and associated services to more than 37.8 million customers throughout the world and in Europe (more than 28 million of whom are in France). The EDF Group has built a business model balanced between France and the international markets, and between deregulated and regulated operations. In 2006, the Group recorded consolidated sales of euros 58,932 million, net income (Group share) of euros 5,605 million, and it achieved earnings before interest, taxes, depreciation and amortization of euros 13,930 million. From July 1, 2007, the EDF group will carry out its trading activities in a European energy market fully open to competition. This document is EDF Group's Reference Document for the year 2006. It contains information about: the Group activities, risk factors, Business overview, Organizational structure, Property, plants and equipment, Operating and financial review, Capital resources and cash flows, Research and Development, Patents and Licenses, Trend information, Financial forecasts or estimates, Administrative, management and supervisory bodies and senior management, Remuneration and benefits, Board practices, Employees/Human resources, Major shareholders, Related party transactions, Financial information

EDF Group: activity and sustainable development 2010

International Nuclear Information System (INIS)

2010-01-01

After a map illustrating the worldwide dimension of EDF, and an interview of the EDF's chairman, this report presents and comments some sustainable development indicators for EDF activity in 2010. Then, after a presentation of the world energy context, it presents and comments EDF's main activities: energy production and engineering, network management, trading. It presents and comments the operational performance of the company in different countries (France, United Kingdom, Italy, and other countries) and evokes additional activities. The next chapter deals with human resources and with innovation and R and D activities. The last chapter presents governance structures and financial results

EDF Energies Nouvelles. Financial report at June 30, 2011

International Nuclear Information System (INIS)

2011-01-01

EDF Energies Nouvelles is a world leader in renewable energy electricity. The company develops, builds and operates clean energy power plants both for its own account and for third parties. Historically, EDF Energies Nouvelles primarily developed its business in two geographical areas, Europe and North America (U.S., Canada and Mexico). EDF Energies Nouvelles is a subsidiary of EDF, helping the Group to achieve its renewable energy goals. The EDF Group generates low-carbon electricity around the world and actively participates in the energy transition. EDF Energies Nouvelles prioritizes development of wind and photovoltaic solar capacity. As an integrated operator with global reach, EDF Energies Nouvelles covers the entire renewable energy chain, from development to operation and maintenance, and manages all project phases in-house. This document is EDF Energies Nouvelles's half-year financial report for 2011. It contains a half-year activity report, the consolidated financial statements at June 30, 2011 and the report drafted by the Statutory Auditors

EDF Group - Annual Report 2016

International Nuclear Information System (INIS)

2017-01-01

EDF group is the world's leading electricity company and global leader for low-carbon energy production. Particularly well established in Europe, especially France, the United-Kingdom, Italy and Belgium, as well as North and South America, the Group covers all businesses spanning the electricity value chain - from generation to distribution and including energy transmission and trading activities - to continuously balance supply. A marked increase in the use of renewables is bringing change to its electricity generation operations, which are underpinned by a diversified and complementary energy mix founded on nuclear power capacity. EDF offers products and advice to help residential customers manage their electricity consumption, to support the energy and financial performance of its business customers, and to help local authorities find sustainable solutions. This document is EDF Group's annual report for the year 2016. It contains information about Group profile, governance, business, development strategy, sales and marketing, positions in Europe and international activities. The document comprises the Group's activities and performances Report and the 'EDF at a glance' 2017 report

Advanced CFD simulation for the assessment of nuclear safety issues at EDF. Some examples

International Nuclear Information System (INIS)

Vare, Christophe

2014-01-01

EDF R and D has computer power that puts it amongst the top industrial research centers in the world. Its supercomputers and in-house codes as well as its experts represent important capabilities to support EDF activities (safety analyses, support to the design of new reactors, analysis of accidental situations non reproducible by experiments, better understanding of physics or complex system response, effects of uncertainties and identification of prominent parameters, qualification and optimization of processes and materials...). Advanced numerical simulation is a powerful tool allowing EDF to increase its competitiveness, improve its performance and the safety of its plants. On this issue, EDF made the choice to develop its own in-house codes, instead of using commercial software, in order to be able to capitalize its expertise and methodologies. This choice allowed as well easier technological transfer to the concerned business units or engineering divisions, fast adaptation of our simulation tools to emerging needs and the development of specific physics or functionalities not addressed by the commercial offer. During the last ten years, EDF has decided to open its in-house codes, through the Open Source way. This is the case for Code – Aster (structure analysis), Code – Saturne (computational fluid dynamics, CFD), TELEMAC (flow calculations in aquatic environment), SALOME (generic platform for Pre and Post-Processing) and SYRTHES (heat transfer in complex geometries), among others. The 3 open source software: Code – Aster, Code – Saturne and TELEMAC, are certified by the French Nuclear Regulatory Authority for many «Important to Safety» studies. Advanced simulation, which treats complex, multi-field and multi-physics problems, is of great importance for the assessment of nuclear safety issues. This paper will present 2 examples of advanced simulation using Code – Saturne for safety issues of nuclear power plants in the fields of R and D and

Chemistry evaluation in French EDF Nuclear Power Plants

International Nuclear Information System (INIS)

Jacquier, Hervé

2014-01-01

The Nuclear Production Division of EDF is comprised of 19 power stations (58 PWR reactors) and 2 national engineering organisations. Nuclear Inspection (IN) is an internal assessment unit of the EDF Nuclear Production Directorate. At the request of the Directorate, it carries out periodic evaluations of all the units of the division. The evaluation of the nuclear sites (EGE: Overall Excellence Assessment) is carried out every 4 years, an intermediate evaluation is also carried out between each EGE. These evaluations are independent of the WANO and IAEA evaluations. Exchanges are carried out between Nuclear Inspection and the other international operators (for example, USA (INPO), England, China...) to share site evaluation methods. These evaluations are carried out by a team of 30 inspectors, reinforced during each evaluation by 10 peers who come from the various French nuclear sites. Nuclear Inspection produces a performance standards document for each FUNCTIONAL AREA, which is based on the requirements of the company. On the whole, 13 areas are evaluated during each inspection, in particular: Management, Operations, Maintenance, Engineering and Chemistry. The area of reactor plant chemistry has been evaluated since 2009. The Chemistry performance standards document is written from the EDF internal requirements and international references. During site evaluations, all the performance standards are assessed for compliance. The Chemistry performance standards document is comprised of 3 topics: Management of plant chemistry, The respect of the chemical and radiochemical specifications, The condition of the laboratories and the sampling lines, measuring equipment, and chemical products. The evaluations carried out make it possible to define strengths and weaknesses which the sites must address. After each evaluation, the assessment is presented to the site management and to the director of EDF Nuclear Production. For 4 years these evaluations have allowed progress to

EDF group - Reference Document 2008. Leading the energy change

International Nuclear Information System (INIS)

2009-01-01

The EDF group is an integrated energy company with a presence in a wide range of electricity-related businesses: generation, transmission, distribution, supply and energy trading. It is France's leading electricity operator and has a strong position in the three other main European markets (Germany, the United Kingdom and Italy), making it one of Europe's leading electrical players as well as a recognized player in the gas industry. With worldwide installed power capacity totaling 127.1 GW (124.8 GW in Europe) and global energy generation of 609.9 TWh, it has the largest generating capacity of all the major European energy corporations with the lowest level of CO 2 emissions due to the significant proportion of nuclear and hydroelectric power in its generation mix. The EDF group supplies gas, electricity, and associated services to more than 38 million customer accounts worldwide (including approximately 28 million in France). The EDF group's businesses reflect its adoption of a model aimed at finding the best balance between French and international activities, and between competitive and regulated operations. In 2008, the Group's consolidated revenues were euros 64.3 billion, the net income (Group share) was euros 3.4 billion, and earnings before interest, tax, depreciation and amortization was euros 14.2 billion. Since July 1, 2007, the EDF group conducts its business in a European market that is completely open to competition. Since January 1, 2008, ERDF, a wholly owned subsidiary of EDF, has assumed responsibility for all distribution in France, while RTE-EDF Transport is responsible for all transmission activities. This document is EDF Group's Reference Document for the year 2008. It contains information about: the Group activities, risk factors, Business overview, Organizational structure, Property plant and equipment, Operating and financial review, Capital resources and cash flows, Research and development, patents and licenses

The deconstruction of EDF nuclear power plants - Information note September 2011

International Nuclear Information System (INIS)

Tran, Lionel

2011-09-01

As nine nuclear reactors are being deconstructed, this document outlines EDF commitment in this deconstruction, and the fact that this deconstruction is a long process which comprises several phases (stopping the reactor, partial and total dismantling). It presents the CIDEN (Deconstruction and Environment Engineering Centre), an expertise centre specialised in plant deconstruction. It briefly addresses the issue of deconstruction wastes: there are different types of wastes (conventional wastes and wastes with different levels of radioactivity), and different associated storage sites. The document highlights the importance of public, personnel and environment protection for these operations, and evokes the financial issue. Finally, the industrial project ICEDA (packaging and warehousing installation for activated wastes) is presented

70 years of EDF archives and a lot more

International Nuclear Information System (INIS)

Holgado, S.

2016-01-01

Since 1968 'EDF Archives' has been in charge of collecting and preserving EDF's documents. EDF distinguishes 2 types of documents: documents (including data) that are still used by EDF teams in their daily work for knowledge transmission or legal aspects and earlier materials that are used for research works in history, sociology or economics. EDF being a public limited liability company (SA) with a public service mission, its archives are both private and public. The oldest documents date back in the 19. century as a legacy of the 2400 enterprises producing or transporting or dispatching electricity or gas that were nationalized in 1946 to form the EDF company. EDF's archives represent 100 linear kilometers of documents, 8 kilometers of which can be consulted by the public. In 2015 a club of the archivists from the nuclear industry was created, its aims were to manage common archives, to build a mapping of all corporate archives and to harmonize managing rules. (A.C.)

EDF Group - Annual Report 2012

International Nuclear Information System (INIS)

2013-01-01

The EDF Group is one of the world's leading energy companies, active in all areas from generation to trading and network management. It has a sound business model, evenly balanced between regulated and deregulated activities. With its first-rate human resources, R and D capability, expertise in engineering and operating generation plants and networks, as well as its energy eco-efficiency offers, the Group delivers competitive solutions that help ensure sustainable economic development and climate protection. The EDF Group is the leader in the French and UK electricity markets and has solid positions in Italy and numerous other European countries, as well as industrial operations in Asia and the United States. Everywhere it operates, the Group is a model of quality public service for the energy sector. This document is EDF Group's annual report for the year 2012. It contains information about Group profile, governance, business, development strategy, sales and marketing, positions in Europe and international activities. The document is made of several reports: the Activity and Sustainable Development Report, the Financial Report, the 'EDF at a glance' report, and the Sustainable Development Indicators

EDF research on fast neutron reactors

International Nuclear Information System (INIS)

In order to make possible the calculation of the temperatures of the sodium, of the sheath and of the fuel in fast reactor assemblies, taking into account the mixing phenomena induced by the helicoidal wires, two design codes have been developed. Those codes have then been adapted for their integration in the Superalcyon system. This system shall constitute the reference tool for the development of those codes that shall manage Phenix, and other reactors of the family. Cooling accidents, thermohydraulic studies, and steam generator studies are also in progress

EDF group - Reference Document 2004

International Nuclear Information System (INIS)

2005-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. With an installed capacity of 125,4 GW, it contributes to the supply of energy and services to more than 42 million customers throughout the world (with approximately 36 million customers in Europe, more than 28 million of whom are in France). The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. In 2004, the Group recorded consolidated sales of euros 46,928 million, net income (Group share) of euros 1,341 million, and it achieved earnings before interests, taxes, depreciation and amortization of euros 12,127 million. This document is EDF Group's Reference Document for the year 2004. It contains information about: the Group activities, capital, relations with Gaz de France utility, strategy, industrial environment, history, activity in France, international activity, transverse activities and functions, disputes, arbitration and risk factors, Property, Plants and Equipment, Operating and Financial Review, Administrative, Management, and Supervisory Bodies and Senior Management, Remuneration and Benefits, recent trends and perspectives

The action of the project coordinator with respect to reactor safety

International Nuclear Information System (INIS)

Leclercq, Jacques

1981-01-01

Before describing the various actions of the project coordinator (EDF) entrusted with the building of nuclear power stations, with respect to reactor safety in France, the definition of reactor safety and the various participants are mentioned first. These participants are: the Government Departments and the Experts involved (the Department of Nuclear Safety of the 'Institut de Protection et de Surete Nucleaire' forming the first technical support) and the applicant, namely the EDF. The reactor safety actions of the project coordinator are defined as from the following components: 1 - The targets laid down with respect to safety, the final objective being the protection of workers and the public against the potential dangers of the installations, principally against radiation. 2 - The safety methodology at the design stage of the power station: 'barrier' method, defence method in depth at three levels, lines of assurance method, and probabilistic method. 3 - Safety actions at the construction stage within the context of an assurance of quality programe. 4 - Safety at the trials, commissioning and operating stage, with the backing of the 'Groupe Operationnel de Demarrage (G.O.D.)' and the 'Commission d'Essais sur Site (C.E.S.)'. An initial balance sheet of the reactor safety actions for the PWR units built by the EDF is presented [fr

EDF Group - 2010 Reference Document

International Nuclear Information System (INIS)

2011-04-01

Beside the accounts of EDF for 2008 and 2009, this voluminous document presents persons in charge, legal account auditors, and how risks are managed within the company. It gives an overview of EDF activities, of its organization, of its assets. It presents and discusses its financial situation and results, indicates the main contracts, and proposes other documents concerning the company. Many documents and reports are provided in appendix

A corporate ALARA engineering support for all EDF nuclear power plan

Energy Technology Data Exchange (ETDEWEB)

Quiot, A.; Orjol, A. [Electricite de France (EDF/UTO), 93 - Noisy le Grand (France); Lafferriere, F.; Fraissinet, E. [Electricite de France (EDF-CNPE) du Blayais, 33 - Saint Ciers sur Gironde (France)

2006-07-01

Since 1991, EDF has established a national ALARA programme with a very effective result in terms of dose reduction. Of course, EDF management has decided to further improve occupational exposure management and dose reduction (both collective and individuals). Since 2002, one key element allowing reaching the new goals, is the set up of a national corporate engineering as a support for EDF sites for preparing maintenance interventions. Its objective is to reduce occupational exposure with the help of up to date tools and methods. That engineering support consists of a growing up team comprising at the moment about ten engineers, including CAD specialists and health physicists. It is in charge of using very efficient tools such as P.A.N.T.H.E.R. -R.P. to perform national modelling studies concerning the reactor and auxiliary buildings areas, which are the most costly in terms of doses. That tool has been developed initially for the first steam generator replacements by EDF S.E.P.T.E.N. engineering department. It uses friendly user 3D software to create a geometrical model of the concerned area with all existing materials (pipes, valves, concrete walls allowing visualizing on personal computers, each area from all perspectives. Other important inputs for P.A.N.T.H.E.R. R.P. are the quantities of radioisotopes present in each material. The code allows then estimating the dose rates at each location in the area, calculating the contribution of each equipment (i.e sources) in the area to the dose rate in each point; calculating also the contribution of each radio isotope to the dose rates. With the help of these models the engineering is then able to perform in depth generic work areas optimisation studies, taking into account the workload in each workstation. Up to recently these studies were performed only for huge operations such as steam generator replacements, they are now proposed to EDF sites for more usual interventions. The selection of these interventions takes

A corporate ALARA engineering support for all EDF nuclear power plan

International Nuclear Information System (INIS)

Quiot, A.; Orjol, A.; Lafferriere, F.; Fraissinet, E.

2006-01-01

Since 1991, EDF has established a national ALARA programme with a very effective result in terms of dose reduction. Of course, EDF management has decided to further improve occupational exposure management and dose reduction (both collective and individuals). Since 2002, one key element allowing reaching the new goals, is the set up of a national corporate engineering as a support for EDF sites for preparing maintenance interventions. Its objective is to reduce occupational exposure with the help of up to date tools and methods. That engineering support consists of a growing up team comprising at the moment about ten engineers, including CAD specialists and health physicists. It is in charge of using very efficient tools such as P.A.N.T.H.E.R. -R.P. to perform national modelling studies concerning the reactor and auxiliary buildings areas, which are the most costly in terms of doses. That tool has been developed initially for the first steam generator replacements by EDF S.E.P.T.E.N. engineering department. It uses friendly user 3D software to create a geometrical model of the concerned area with all existing materials (pipes, valves, concrete walls allowing visualizing on personal computers, each area from all perspectives. Other important inputs for P.A.N.T.H.E.R. R.P. are the quantities of radioisotopes present in each material. The code allows then estimating the dose rates at each location in the area, calculating the contribution of each equipment (i.e sources) in the area to the dose rate in each point; calculating also the contribution of each radio isotope to the dose rates. With the help of these models the engineering is then able to perform in depth generic work areas optimisation studies, taking into account the workload in each workstation. Up to recently these studies were performed only for huge operations such as steam generator replacements, they are now proposed to EDF sites for more usual interventions. The selection of these interventions takes

EDF Energy Nuclear New Build: Lessons Learned in Knowledge Management

International Nuclear Information System (INIS)

Sachar, M.; Borlodan, G.

2016-01-01

Full text: EDF Energy Nuclear New Build (NNB) is building two EPR reactors at Hinkley Point C in Somerset in the United Kingdom that will provide reliable, low carbon electricity to meet approximately 7% of the UK’s electricity needs. The Hinkley Point C project is well advanced. It has achieved planning consent, design approval for the EPR reactor and a nuclear site license. There is a well-developed supply chain with identified preferred bidders who are already heavily involved in construction planning. Training for needed skills is underway and industrial agreements with trade unions are in place. NNB has the unique opportunity to set Knowledge Management behaviours, culture, and standards for the Hinkley Point C project from project inception instead of working to change them, such as on an operational site. (author

EDF Energies Nouvelles. Consolidated financial statements at 30 June 2009

International Nuclear Information System (INIS)

2010-01-01

EDF Energies Nouvelles is a world leader in renewable energy electricity. The company develops, builds and operates clean energy power plants both for its own account and for third parties. Historically, EDF Energies Nouvelles primarily developed its business in two geographical areas, Europe and North America (U.S., Canada and Mexico). EDF Energies Nouvelles is a subsidiary of EDF, helping the Group to achieve its renewable energy goals. The EDF Group generates low-carbon electricity around the world and actively participates in the energy transition. EDF Energies Nouvelles prioritizes development of wind and photovoltaic solar capacity. As an integrated operator with global reach, EDF Energies Nouvelles covers the entire renewable energy chain, from development to operation and maintenance, and manages all project phases in-house. This document is EDF Energies Nouvelles's registration document for the year 2009. It contains information about Group profile, governance, business, investments, property, plant and equipment, management, financial position, employees, shareholders, etc. The document includes the group's consolidated financial statements at 31 December 2008

The French approach through the SMR consortium (CEA, EDF, AREVA, DCNS)

International Nuclear Information System (INIS)

Chenais, J.; Diet, A.; Grondin, Y.; Perrier, S.

2014-01-01

The SMR (Small Modular Reactor) is a new range of nuclear reactors characterized by a low output power (less than 300 MWe) and a standardized modular factory-based construction. Moderate capital costs make this type of reactor very attractive for medium-size power utilities or small countries. A consortium made around the CEA and its industrial partners (EDF, AREVA and DCNS) has performed economic and technical feasibility studies. It appears that the competitiveness of SMR require power production costs around 100 euros/MWh and that SMR will be based on PWR technology with a power output of 150 MWe per unit. 2 types of SMR are proposed: a terrestrial unit and an immersed unit. The concept of the immersed SMR, called Flexblue, is based on an unlimited access to a cold sink (the ocean) and a complete modularity. In both types the standard of safety appears to be high. (A.C.)

Introduction of advanced pressurized water reactors in France

International Nuclear Information System (INIS)

Millot, J.P.; Nigon, M.; Vitton, M.

1988-01-01

Designed >30 yr ago, pressurized water reactors (PWRs) have evolved well to match the current safety, operating, and economic requirements. The first advanced PWR generation, the N4 reactor, is under construction with 1992 as a target date for commercial operation. The N4 may be considered to be a technological outcome of PWR evolution, providing advances in the fields of safety, man/machine interfaces, and load flexibility. As a step beyond N4, a second advanced PWR generation is presently under definition with, as a main objective, a greater ability to cope with the possible deterioration of the natural uranium market. In 1986, Electricite de France (EdF) launched investigations into the possible characteristics of this advanced PWR, called REP-2000 (PWR-2000: the reactor for the next century). Framatome joined EdF in 1987 but had been working on a new tight-lattice reactor. Main options are due by 1988; preliminary studies will begin and, by 1990, detailed design will proceed with the intent of firm commitments for the first unit by 1995. Commissioning is planned in the early years of the next century. This reactor type should be either an improved version of the N4 reactor or a spectral shift convertible reactor (RCVS). Through research and development efforts, Framatome, Commissariat a l'Energie Atomique (CEA), and EdF are investigating the physics of fuel rod tight lattices including neutronics, thermohydraulics, fuel behavior, and reactor mechanics

EDF and GDF diversification; La diversification d'EDF et de GDF

Energy Technology Data Exchange (ETDEWEB)

NONE

1999-11-08

In the last years Electricite de France (EDF) and Gaz de France (GDF) developed intervening strategies in a number of sectors opened to competition, the so-called strategies of diversification or complementary activities. These new strategies have multiple objectives as, for instance, prospective monopole evolution, increasing exigence of the consumers' demand, or else competence valuing. Ever since 1991, these strategic orientations developed with the support of public powers that worked out first measures of organization and monitoring. Although the frame was loose and rather tolerant, boosting EDF and GDF diversification was perceived by the concerned professionals as an aggression directed against them. Following a strong mobilization of professional organizations and a number of elected persons, in mid 1993, the minister of industry was impelled to tackle personally with the matter what resulted in an accurate system of framing. The GDF diversification is essentially characterized by a 'thermal pole' corresponding to the activities of heating operation. GDF controls, around the company Danto Rogeat and the old branches of Shell group, about 5% of a market of heating operation in France, i.e., represents the third place in a rather monopolized sector where the two main operators represent almost 75%. The EDF diversification is but more diffuse. Three main fields emerge distinctly: the waste processing, public lighting, and engineering. EDF is also present on more restraint markets as cartography, tele-surveillance, cable TV, aquaculture. The implementation of the system is presented where prerogatives of the Council of State on one hand and the Council of Competition on the other hand are stipulated. The disposition frame system is constituted of two measures stipulating the application of commendation from the two councils and provisions ensuring the transparency, respectively.

EDF Group - Annual Report 2014. The people who power tomorrow

International Nuclear Information System (INIS)

2015-01-01

The EDF Group is the world's leading electricity company and very well established in Europe. Its business covers all electricity-related activities, from generation to networks and commerce. It is an important player in energy trading through EDF trading. This document is EDF Group's annual report for the year 2014. It contains information about Group profile, governance, business, development strategy, sales and marketing, positions in Europe and international activities. The document is made of several reports: the Activity and Sustainable Development Report, the 'EDF at a glance' report, and the EDF Group Performance sheet

Generation IV reactors: economics

International Nuclear Information System (INIS)

Dupraz, B.; Bertel, E.

2003-01-01

The operating nuclear reactors were built over a short period: no more than 10 years and today their average age rounds 18 years. EDF (French electricity company) plans to renew its reactor park over a far longer period : 30 years from 2020 to 2050. According to EDF this objective implies 3 constraints: 1) a service life of 50 to 60 years for a significant part of the present operating reactors, 2) to be ready to built a generation 3+ unit in 2020 which infers the third constraint: 3) to launch the construction of an EPR (European pressurized reactor) prototype as soon as possible in order to have it operating in 2010. In this scheme, generation 4 reactor will benefit the feedback experience of generation 3 and will take over in 2030. Economic analysis is an important tool that has been used by the generation 4 international forum to select the likely future reactor systems. This analysis is based on 4 independent criteria: the basic construction cost, the construction time, the operation and maintenance costs and the fuel cycle cost. This analysis leads to the evaluation of the global cost of electricity generation and of the total investment required for each of the reactor system. The former defines the economic competitiveness in a de-regulated energy market while the latter is linked to the financial risk taken by the investor. It appears, within the limits of the assumptions and models used, that generation 4 reactors will be characterized by a better competitiveness and an equivalent financial risk when compared with the previous generation. (A.C.)

The human factors approach at EDF

International Nuclear Information System (INIS)

Colas, A.

2004-01-01

At the dawn of the 21st century, French electricity utility EDF is facing a number of major changes, in particular the liberalisation of European energy markets and the restructuring needed to cope with this development. EDF's approach to human factors (HF) aspects is also undergoing major changes, since people obviously play a predominant role in any organisational structure. (author)

EDF group. Annual report 2001

Energy Technology Data Exchange (ETDEWEB)

NONE

2002-05-01

This document is the English version of the 2001 annual report of Electricite de France (EdF) Group, the French electric utility. It comprises 4 parts: introduction (statement of the chairman and chief executive officer, corporate governance, group key figures, sustainable growth indicators - parent company, energy for a sustainable future, EdF group worldwide); dynamics and balanced growth (financial results, EdF's strategy in building a competitive global group: consolidating the European network, moving forward in energy-related services, responding to increasing energy demand in emerging countries); sustainable solutions for all (empowering the customer: competitive solutions for industrial customers, anticipating the needs of residential customers and SMEs, environmental solutions to enhance urban life, upgrading the network and providing access to energy; a sound, sustainable and secure energy mix: a highly competitive nuclear fleet, the vital resource of fossil-fuelled plants, a proactive approach to renewable energies); a global commitment to corporate social responsibility (human resources and partnerships). (J.S.)

SDIN a new information system for the EDF's fleet of French nuclear reactors

International Nuclear Information System (INIS)

Corre, Y.; Sasseigne, P.; Herodin, J.M.; Leclerq, J.

2013-01-01

The SDIN is the new information system that allows the management of operating and maintenance activities of EDF's fleet of nuclear power plants. This new system relies on 6 main softwares that allow: 1) the management of operations and maintenance, 2) the management of documentation, 3) the management of activities during unit outages, 4) the management of diagrams, schemes and designs, 5) the reporting of activities, and 6) a unified access to the SDIN. SDIN entered into operation in 2012 (6 years after its launching) in a testing phase in the Blayais power plant and in 2 engineering departments. SDIN is expected to improve the plant performance and its standard of safety as well as to prepare the way in terms of adequate technical conditions for operating life extension. (A.C.)

The ALARA project of the EDF nuclear park exploitation

International Nuclear Information System (INIS)

Potoczek, J.

1998-01-01

To bring the exploitation of the nuclear park of EDF at the level of the best exploiters in the world in matter of collective and individual dosimetry, the ALARA principle coordinates numerous actions: to associate the temporary societies, to define common language, methods and tools for the whole park to organize a level effect in this area, to optimize the maintenance that is expansive in radiation doses, to make the different levels of management responsible on dosimetric stakes, to reduce the singular sources of exposure, to assure the organisation and exploitation of the experience back in this field and adapt consequently the system of information. The results are cheerful and the objectives for 2000 are: less than 1.2 h.Sv by year and by reactor, no intervener whom annual radiation dose is upper than 20 mSv (out of exceptional case). (N.C.)

The effects of radiations on materials for core internals of PWRs: EDF-CEA-Framatome joint research programme

International Nuclear Information System (INIS)

Mathan, N. de; Buisine, D.; Goltrant, O.; Dubuisson, P.; Scott, P.; Deydier, D.; Trenty, A.

1998-01-01

The effects of neutron irradiation on materials for the core internals of PWRs (austenitic stainless steels) are potentially a significant economic and regulatory concern for EDF. The maintenance strategy for EDF relies primarily on in-service inspection, safety analysis and characterization of materials irradiated in-service. In addition, to anticipate likely future behaviour of highly irradiated materials, EDF has initiated, in collaboration with CEA and Framatome, a large R and D programme designed to (i) evaluate the effects of neutron irradiation on mechanical properties and stress corrosion cracking sensitivity (IASCC), and (ii) identify possible replacement materials. The programme, currently in progress, involves mechanical tests (tensile, fracture toughness, irradiation creep), stress corrosion cracking tests (in flux and out of flux) and metallurgical examinations. The test materials are being irradiated in several experimental reactors in France and Russia up to PWR-related end of life doses (∼ 80 dpa) at several PWR-relevant irradiation temperatures (300-400 deg. C). The presentation will describe the objectives and early results of this ongoing R and D programme. (author)

Energies and media nr 32. Conditions for the nuclear sector. Uranium and its enrichment for EDF. The role of Russia

International Nuclear Information System (INIS)

2010-07-01

After some comments on recent events in the nuclear sector in different countries (international conference, agreement between Rosatom and the IAEA, energy policy and projects in India, Turkey, Vietnam, France, Finland, UK, Sweden, USA, Germany), this publication discusses the uranium enrichment issue for EDF and the role of Russia. It refers to a report by the French High committee for transparency and information on nuclear safety (HCTISN) and to a hearing by the French Parliament. Different aspects are discussed: the national and international legal contexts and their relationship, the EDF reactor supply (enriched uranium of MOX, fixed elements in enrichment contracts, supply security), enrichment processes and installations (in France, natural uranium enrichment, use of reprocessed or recycle uranium, use of depleted uranium as a by-product of enrichment), how EDF and AREVA are working with Russia (enrichment of recycled uranium, use of depleted uranium)

Experimental adoption of RCM in EDF substations

International Nuclear Information System (INIS)

Heroin, G.; Aupied, J.; Sanchis, G.

1995-12-01

EDF, after testing Reliability Centred Maintenance (RCM) on systems used in nuclear power plants, has now successfully extended RCM to all of its nuclear power plants. In the light of this experience, EDF has committed itself to a pilot study on a line bay of a 400 kV substation in 1992. The RCM method as applied benefited from EDF's policy of maintenance, introduced five years ago on all substations, which has enhanced prospects of reliability. The original feature in the selection of maintenance tasks was that it brought into play two criteria for failure assessment: frequency and seriousness, and two criteria for maintenance task selection: efficiency and facility. (author)

EDF - Electricite de France, 2004 annual Results

International Nuclear Information System (INIS)

2005-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's annual Results for 2004. It is made of several reports: The Consolidated financial statements at 31 December 2004, the 2004 Half-year results presentation, and The Consolidated financial statements at 30 June 2004

EDF - Electricite de France, 2005 annual Results

International Nuclear Information System (INIS)

2006-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's annual Results for 2005. It is made of several reports: the 2005 Annual Results presentation, the consolidated financial statements at 31 December 2005, the 2005 Half-year results presentation, and the Consolidated financial statements at 30 June 2005

Group EDF annual report 2005 sustainable development; Groupe EDF rapport annuel 2005 developpement durable

Energy Technology Data Exchange (ETDEWEB)

NONE

2006-05-15

The EDF Group's Sustainable Development Report for 2005 is designed to report on Group commitments particularly within its Agenda 21, its ethical charter, and the Global Compact. It has also been prepared with reference to external reference frameworks: the Global Reporting Initiative (GRI) guidelines and the French New Economic Regulations (NRE) contained in the May 15, 2001 French law. It contents the Chairman's statement, the evaluation of renewing and sharing commitments with all stakeholders, the managing local issues, EDF responses to the challenges of the future. Indicators are also provided. (A.L.B.)

Monitoring large rotating machines at EDF

International Nuclear Information System (INIS)

Chevalier, R.; Bourgeois, P.; Le Reverend, D.

1992-09-01

At Electricite de France (EDF), since 1978, the operating instruments which ensure the DETECTION function, have been completed on turbogenerators by a specialized ''off-line'' vibration monitoring system, which allows a posteriori DIAGNOSIS analysis. However because of a need of a real time and more elaborated DETECTION function, the concept of the Monitoring and Diagnosis Aid Station (Poste de Surveillance et d'Aide au Diagnostic: PSAD) has been developed. It federates the processing of monitoring, organized into several functions, and includes the monitoring of turbogenerators (TGS) and reactor coolant pumps (RCP). The purpose of this paper is to present, on the one hand, the monitoring functions of TGS and RCP and on the other, the first experimental results on the behaviour of three RCP, obtained through a SAMT (Surveillance Automatisee des Machines Tournantes - Automatic monitoring of rotating machines) prototype. (authors). 2 figs., 4 tabs., 4 refs

EDF Group - Annual Report 2013

International Nuclear Information System (INIS)

2014-01-01

The EDF Group is emerging as a global leader in electricity and an industrial benchmark spanning the entire business from generation and networks to sales and marketing. The group is growing stronger and changing. A long-term vision and relentless determination to provide a modern public service underpin its robust business model. This document is EDF Group's annual report for the year 2013. It contains information about Group profile, governance, business, development strategy, sales and marketing, positions in Europe and international activities. The document comprises the Activity Report and the Sustainable Development Indicators

Computerized dosimetry management systems within EDF

International Nuclear Information System (INIS)

Daubert, G.

1996-01-01

EDF, using the ALARA approach, has embarked an ambitious project of optimising the doses received in its power plants. In directing its choice of actions and the effectiveness of such actions, the French operator is using a computerized personal and collective dosimetry management system. This system provides for ongoing monitoring of dosimetry at personal, site and unit level or indeed for the entire population of EDF nuclear power plants. (author)

EDF group - Reference Document, Annual Financial Report 2014

International Nuclear Information System (INIS)

2015-01-01

The EDF Group is the world's leading electricity company and very well established in Europe. Its business covers all electricity-related activities, from generation to networks and commerce. It is an important player in energy trading through EDF trading. This document is EDF Group's Reference Document and Annual Financial Report for the year 2014. It contains information about Group profile, governance, business, investments, property, plant and equipment, management, financial position, human resources, shareholders, etc. The document includes the half-year financial report

Nuclear reactor unit shutdown planning

International Nuclear Information System (INIS)

Gardais, J.P.

1994-01-01

In order to optimize the reactor maintenance shutdown efficiency and the reactor availability, an audit had been performed on the shutdown organization at EDF: management, skills, methods and experience feedback have been evaluated; several improvement paths have been identified: project management, introduction of shutdown management professionals, shutdown permanent industrialization, and experience feedback engineering

Some views on nuclear reactor safety

Energy Technology Data Exchange (ETDEWEB)

Tanguy, P.Y. [Electricite de France, Paris (France)

1995-04-01

This document is the text of a speech given by Pierre Y. Tanguy (Electricite de France) at the 22nd Water Reactor Safety Meeting held in Bethesda, MD in 1994. He describes the EDF nuclear program in broad terms and proceeds to discuss operational safety results with EDF plants. The speaker also outlines actions to enhance safety planned for the future, and he briefly mentions French cooperation with the Chinese on the Daya Bay project.

Statement of the IRSN on the safety re-examination assessment made by EDF within the frame of the third decennial inspection of the 900 MW reactors

International Nuclear Information System (INIS)

2008-01-01

The IRSN (the French Institute of Radioprotection and Nuclear Safety) here presents an assessment of the studies performed by EDF within the frame of the safety re-examination associated to the third decennial inspections of the 900 MW reactors, and of the modifications resulting from these studies with respect to the originally defined objectives of this re-examination. The aim of this report is to allow the ASN (Autorite de Surete Nucleaire, the Nuclear Safety Authority) stating the 900 MW reactor ability to carry on their operation until the fourth decennial inspections. Different themes and studies are assessed: internal and external aggressions (flooding, explosions, fire, seismic control, and climatic aggressions), accident assessments and their radiological consequences (failure of various components, the performing of probabilistic studies, confining procedures, structures and devices, etc.), operation and design of various systems and of civil engineering works. Several documents or extracts of official reports are given in appendix, expressing notably various recommendations on the here-above topics

EDF Group - Annual Report 2005

International Nuclear Information System (INIS)

2006-01-01

The EDF Group is a leading player in the European energy industry, present in all areas of the electricity value chain, from generation to trading, and increasingly active in the gas chain in Europe. Leader in the French electricity market, the Group also has solid positions in the United Kingdom, Germany and Italy. In the electricity sector, it has the premier generation fleet and customer portfolio in Europe and operates in strategically targeted areas in the rest of the world. The Group is also the leading network operator in Europe, giving it a sound business model, equally balanced between regulated activities and those open to competition. This document is EDF Group's annual report for the year 2005. It contains information about Group profile, governance, business, development strategy, sales and marketing, positions in Europe and international activities. The document is made of several reports: the Activity and Sustainable Development report, the Financial Report, the Sustainable Development Report, the Sustainable Development Indicators, the Management Report, the Report by the Chairman of EDF Board of Directors on corporate governance and internal control procedures

EDF Group - Annual Report 2006

International Nuclear Information System (INIS)

2007-01-01

The EDF Group is a leading player in the European energy industry, present in all areas of the electricity value chain, from generation to trading, and increasingly active in the gas chain in Europe. Leader in the French electricity market, the Group also has solid positions in the United Kingdom, Germany and Italy. In the electricity sector, it has the premier generation fleet and customer portfolio in Europe and operates in strategically targeted areas in the rest of the world. The Group is also the leading network operator in Europe, giving it a sound business model, equally balanced between regulated activities and those open to competition. This document is EDF Group's annual report for the year 2006. It contains information about Group profile, governance, business, development strategy, sales and marketing, positions in Europe and international activities. The document is made of several reports: the Activity and Sustainable Development Report, the Financial Report, the Sustainable Development Report, the Sustainable Development Indicators, and the Report by the Chairman of EDF Board of Directors on corporate governance and internal control procedures

Group EDF at a glance 2005; Groupe EDF l'essentiel 2005

Energy Technology Data Exchange (ETDEWEB)

NONE

2006-05-15

The EDF Group is a leading player in the European energy industry, present in all areas of the electricity value chain, from generation to trading, and increasingly active in the gas chain in Europe. 2005 was a crucial year for EDF: growth in sales and a doubling of net income, the opening of the capital, the stepping up of our strategic development plan focused on Europe, a new public service agreement in France. This document presents the main points of the group activities in 2005: the group profile, the growing of the group, the solid position in France (sales and marketing, production and global warming, the radioactive wastes management and the business), consolidating positions in Europe and the international activities by pursuing a selective strategy. (A.L.B.)

The French Electricity Company (EDF) and the environment. Press file for 1996

International Nuclear Information System (INIS)

Bourdier, Jean-Pierre

1997-01-01

In 1996 the actions of EDF in the domain of environment have recorded FF 4 billions (FF 3.5 billion in 1995), representing about 2% of the EDF's turnover. The EDF keeps on its efforts for reducing the impact of its activities upon environment. Several applications of an environment protective electricity generation are promoted by the company. The company brings services and technical solutions to its clients which meet their energy needs and conserving at the same time the life conditions. Furthermore, EDF participates in the activity of numerous national and international organisms, intervening in the environmental questions, in decision making, participating in studies and actions and following continually the direction of a durable economic and social development. The report is structured in three chapters: 1. an industrial responsibility; 2. services and techniques for environment; 3. action towards a durable development

EDF at a glance. EDF group 2002

International Nuclear Information System (INIS)

2003-01-01

This document presents the organization and key data of the Electricite de France (EdF) group for 2002: business (generation and trading, transmission, distribution, supply, energy services), corporate governance (board of directors, executive committee), different branches of the group (continental Europe, western Europe, Middle-East and Africa, Asia-Pacific, Americas), main affiliates, international contacts and addresses, financial performance (consolidated sales, Ebitda), customers (residential, commercial, business and industrial, local authorities), generation (balanced energy mix), human resources, corporate social responsibility, sustainable development indicators. (J.S.)

EDF Group - Annual Report 2008. Leading the energy change

International Nuclear Information System (INIS)

2009-01-01

The EDF Group is a leading player in the energy industry, present in all areas of the electricity value chain, from generation to trading, along with network management and the natural gas chain. The Group has a sound business model, evenly balanced between regulated and deregulated activities. It is the leader in the French and British electricity markets and has solid positions in Germany and Italy. The Group has a portfolio of 38.1 million customers in Europe and the world's premier nuclear generation fleet. Given its R and D capability, its track record and expertise in nuclear generation and renewable energy, together with its energy eco-efficiency offers, EDF offers competitive solutions that reconcile sustainable economic development and climate preservation. EDF's goal is to deliver solutions that allow every customer to help create a world of competitive, low-carbon energies. This document is EDF Group's annual report for the year 2008. It contains information about Group profile, governance, business, development strategy, sales and marketing, positions in Europe and international activities. The document is made of several reports: the Activity and Sustainable Development Report, the Financial Report, the Sustainable Development Report and the Sustainable Development Indicators

Radioactive waste management at EDF plants: General overview and perspectives

International Nuclear Information System (INIS)

Debes, M.; Bordier, M.

2001-01-01

During the last fifteen years a significant decrease in solid radioactive waste generated by nuclear power plants of Electricite de France (EDF) has taken place. Technology used by EDF is described, with emphasis on innovative technologies. Experience and lessons learned are described showing how EDF has responded to meet increasingly stringent regulations for radioactive waste management. (author)

EDF Skills Management for Operations

International Nuclear Information System (INIS)

Poizat, Christophe

2014-01-01

Training Standards: EDF Nuclear Generation Training Strategy & Fundamentals for Managing Competencies - Adaptation of INPO ACAD02-001: 1 – Management of Competencies; 2 – Training Management for Performance Improvement; 3 – Management of Training Processes & Resources; 4 – Initial Training; 5 – Continuing Training; 6 – Training Implementation & Trainee Evaluation; 7 – Training Effectiveness Evaluation; 8 – Engagement of NPP’s Personnel in Competencies

EDF - Electricite de France, 2007 annual Results

International Nuclear Information System (INIS)

2008-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's annual Results for 2007. It is made of several reports: the 2007 Annual Results presentation, the 2007 Financial Report, the press releases for the first and third quarters 2007 quarterly financial information, the 2007 Half-year results presentation, the Management Report for the first half 2007, and the consolidated financial statements at 30 June 2007

EDF - Electricite de France, 2008 annual Results

International Nuclear Information System (INIS)

2009-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's annual Results for 2008. It is made of several reports: The Annual Results press release, the 2008 Annual Results presentation, the 2008 Financial Report, the press releases for the first and third quarters 2008 quarterly financial information, the 2008 Half-year results presentation, the Financial Report for the first half 2008

EDF - Electricite de France, 2006 annual Results

International Nuclear Information System (INIS)

2007-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's annual Results for 2006. It is made of several reports: the 2006 Annual Results presentation, the 2006 Financial Report, the press releases for the first and third quarters 2006 quarterly financial information, the 2006 Half-year results presentation, the Management Report for the first half 2006, and the consolidated financial statements at 30 June 2006

CO2: EDF's competitiveness is due to nuclear power

International Nuclear Information System (INIS)

Anon.

2003-01-01

The CO 2 emissions of EDF group (EDF-France + EDF-energy (UK) + Hidrocantabrico (Spain) + EnBW (Germany)) soared by 53% in 2002 which is due to the purchase of british and spanish electricity sub-companies using fossil energies. Despite this sharp increase EDF remains one of the most competitive electricity companies in Europe concerning greenhouse gas emissions. EDF group is the first electricity company in Europe, it generates 22% of the electricity produced in E.U and contributes to CO 2 emissions with a rate of 101 Kg CO 2 /MWh which 3 times less than the average rate of 20 other European companies (358 Kg CO 2 /MWh). This result is due to the large part of nuclear power in the French energy mix. The best electricity companies as far as CO 2 emissions are concerned are Statkraft (Norway) with 0 Kg CO 2 /MWh (100% hydrology) and British-energy (U.K) with 75 Kg CO 2 /MWh (75% nuclear power). At the other end we have the DEI company (Greece) with 863 Kg CO 2 /MWh (100% lignite). (A.C.)

Audit of EDF generation and transmission division suppliers

International Nuclear Information System (INIS)

Leconte, J.P.

1993-01-01

This paper presents the process for acceptance by EDF/production and transmission group of suppliers, industrial equipment manufacturers and providers of repair activities or services for the maintenance of nuclear plants. 1 tab

EDF Group - Annual Report 2015

International Nuclear Information System (INIS)

2016-01-01

EDF Group is the world's leading electricity company and it is particularly well established in Europe, especially France, the United Kingdom, Italy and Belgium. Its business covers all electricity-related activities, from generation to distribution and including energy transmission and trading activities to continuously balance supply with demand. A marked increase in the use of renewables is bringing change to its power generation operations, which are underpinned by a diversified low-carbon energy mix founded on nuclear power capacity. With activities across the entire electricity value chain, EDF is reinventing the products and services it offers to help residential customers manage their electricity consumption, to support the energy and financial performance of business customers and to support local authorities in finding sustainable solutions for the cities of the future. This document is EDF Group's annual report for the year 2015. It contains information about Group profile, governance, business, development strategy, sales and marketing, positions in Europe and international activities. The document is made of several reports: the 2016 Book, the '2016 at a glance' report, the Profile and Performance 2015 report, the 2015 Reference Document - Annual Financial Report

EDF plan for a dispersant injection trial

International Nuclear Information System (INIS)

Mercier, Stephane; Corredera, Geraldine; Alves-Vieira, Maria; Mansour, Carine; You, Dominique

2012-09-01

In its strategy for SG fouling control, EDF is considering the use of dispersant as a preventive remedy. A trial on Golfech 2 started in May 2012. The dispersant selected for the trial is Polyacrylic Acid (PAA). The main goals of the test are to check and quantify the gain on iron transport to blowdown, to evaluate the possible effects on secondary side chemistry and the operational costs of the injection - reactant, ion exchange resins and filters. The results of the test, if satisfying, will be used to set EDF strategy for dispersant long term use on its fleet. So, one concern about the trial is to make sure that the conclusions of this test will be applicable to a wide range of EDF plants. For that purpose, several criteria have been examined for the choice of the candidate plant such as fouling level, secondary circuit materials (presence or absence of copper alloys,...), SG tube material, thermal power margin, secondary side chemistry (amine used and pH applied). Before starting the trial, EDF had to take into account the international feedback and to adapt it to its specific requirements: the neutralization amine was switched from ETA to morpholine, additional work had been completed to validate the innocuousness of PAA injection for EDF plants... This work especially includes laboratory testing of secondary side corrosion cracking in the presence of PAA and water chemistries used in EdF plants. Moreover, investigation on the thermal stability of PAA and degradation products was completed and further evaluation of environmental impact was performed. A dedicated skid for the injection of PAA was implemented in Golfech Chemicals injection room. The installation and the process were notably designed to take into account the high viscosity of the commercial product, and the need to proceed to a good rinsing of the pipes without increasing the discharged effluents. The first available data from Golfech 2 trial are also provided and discussed. (authors)

EDF - Electricite de France, 2009 annual Results

International Nuclear Information System (INIS)

2010-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's annual Results for 2009. It is made of several reports: The Annual Results press release, the 2009 Annual Results presentation and its appendices of the presentation the press releases for the first and third quarters 2009 quarterly financial information, the presentation of the Sales for the 3rd quarter 2009, the 2009 Half-year results presentation, the Financial Report for the first half 2009

EDF at a glance. EDF group 2002; Organisation et chiffres cles. Groupe EDF 2002

Energy Technology Data Exchange (ETDEWEB)

NONE

2003-07-01

This document presents the organization and key data of the Electricite de France (EdF) group for 2002: business (generation and trading, transmission, distribution, supply, energy services), corporate governance (board of directors, executive committee), different branches of the group (continental Europe, western Europe, Middle-East and Africa, Asia-Pacific, Americas), main affiliates, international contacts and addresses, financial performance (consolidated sales, Ebitda), customers (residential, commercial, business and industrial, local authorities), generation (balanced energy mix), human resources, corporate social responsibility, sustainable development indicators. (J.S.)

EDF - Electricite de France, 2003 First Half Results

International Nuclear Information System (INIS)

2003-10-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's first half results for 2003. It contains a presentation of the First Half Developments and Outlook and the Financial Results, followed by the consolidated half year financial statements for the period ended 30 June 2003

Report 2000 of EDF nuclear park '' Humans, architects of the progress; Bilan 2000 du parc nucleaire d'EDF ''les hommes, artisans du progres''

Energy Technology Data Exchange (ETDEWEB)

Stricker, L.

2001-03-01

This report presents the results of the EDF nuclear park, during 2000, in matter of safety, environment and competitiveness. In 2000, the EDF nuclear installations safety still improved. Hopeful the nuclear energy part in its power production, EDF avoids the carbon dioxide diffusion in the atmosphere. EDF also commits itself to reduce the liquid effluents, the gaseous emissions and the solid wastes. At the same time EDF remained competitive with a decrease of the kWh price of 7%. (A.L.B.)

Shutdown channels and fitted interlocks in atomic reactors

International Nuclear Information System (INIS)

Furet, J.; Landauer, C.

1968-01-01

This catalogue consists of tables (one per reactor) giving the following information: number and type of detectors, range of the shutdown channels, nature of the associated electronics, thresholds setting off the alarms, fitted interlocks. These cards have been drawn up with a view to an examination of the reactors safety by the 'Reactor Safety Sub-Commission', they take into account the latest decisions. The reactors involved in this review are: Azur, Cabri, Castor-Pollux, Cesar-Marius-2, Edf-2, EL3, EL4, Eole, G1, G2-G3, Harmonie, Isis, Masurca, Melusine, Minerve, Osiris, Pegase, Peggy, PAT, Rapsodie, SENA, Siloe, Siloette, Triton-Nereide, and Ulysse. (authors) [fr

On-line acoustic monitoring of EDF nuclear plants in operation and loose-part diagnosis

International Nuclear Information System (INIS)

Morel, J.L.; Puyal, C.

1991-05-01

In order to detect incipient failures in nuclear power plant components, EDF has now put into operation more than 50 loose-part monitoring systems, on its 900 MW and 1 300 MW units. This paper first reviews the experience gained on the 900 MW reactors in recent years. It then focuses on the 1 300 MW loose part monitoring system (IDEAL) and to the tools developed for the diagnosis off site within a specific Expertise Laboratory at the Research and Development Division. New studies have been undertaken within the Monitoring and Aid to Diagnosis Station (PSAD) in order to extend the capabilities of loose part diagnosis on site. The new tools here presented integrate the recent progress in acquisition technology (SMART system) and in artificial intelligence (MIGRE expert system)

Burst slug detection system in french power reactors (1961); La detection des ruptures de gaines dans les reacteurs de puissance francais (1961)

Energy Technology Data Exchange (ETDEWEB)

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

1961-07-01

Gas samples are taken from the channels of the reactor and the short lived fission products are electrostatically collected to be analysed by a phosphor and photomultiplier system. The electrostatic collection and rotating electrode detector is described and its main uses exposed. Experience has shown the interest of measuring the evolution of fission products activities and not their absolute value only. In this way, data processing equipment have been designed and adapted to the detection apparatus. The system developed and realized for the G-l - G-2 - G-3 - EDF-1 - EDF-2 reactors are compared. (authors) [French] Un prelevement de gaz est effectue dans les canaux du reacteur et les produits de fission a vie courte sont collectes electrostatiquement pour etre analyses par un ensemble scintillateur-photomultiplicateur. Le detecteur a collection electrostatique et electrode tournante est decrit et ses applications principales sont exposees. L'experience a montre l'interet de mesurer l'evolution des activites en produits de fission et non seulement leur valeur absolue. D'ou le developpement d'ensembles de traitement des informations associes aux chaines de detection. Comparaison des realisations sur les reacteurs G-l - G-2 - G-3 - EDF-1 et EDF-2. (auteurs)

EDF group - Reference Document 2007

International Nuclear Information System (INIS)

2008-01-01

The EDF Group is a leading player in the European energy industry, active in all areas of the electricity value chain, from generation to trading and network management. The leader in the French electricity market, the Group also has solid positions in the United Kingdom, Germany and Italy, with a portfolio of 38.5 million European customers and a generation fleet which is unique in the world. It intends to play a major role in the global revival of nuclear and is increasingly active in the gas chain. The Group has a sound business model, evenly balanced between regulated and deregulated activities. Given its R and D capability, its track record and expertise in nuclear, fossil-fired and hydro generation and in renewable energies, together with its energy eco-efficiency offers, EDF is well placed to deliver competitive solutions to reconcile sustainable economic growth and climate preservation. This document is EDF Group's Reference Document and Annual Financial Report for the year 2007. It contains information about Group profile, governance, business, investments, property, plant and equipment, management, financial position, human resources, shareholders, etc. The document includes the 2008 half-year financial report and consolidated financial statements, and the report drafted by the Statutory Auditors

Long history of "3"6Cl assessment of graphite waste by EDF engineering and the latest suggested developments. "3"6Cl assessment of EDF graphite waste and the latest suggested developments

International Nuclear Information System (INIS)

Poncet, B.

2017-01-01

About 17.000 tons of irradiated graphite waste will be produced from the decommissioning of the six gas-cooled nuclear reactors operated by Electricite De France (EDF) company. Determining the radionuclide content of this waste is an important legal commitment for both safety reasons and best suited management strategy. As evidenced by numerous studies nuclear graphite is a very complex material that cannot be considered on an analytical viewpoint as any usual homogeneous material. Radionuclide measurements in irradiated graphite exhibit very high discrepancies especially when corresponding to precursors at trace level. This huge discrepancy cannot be avoided and can be easily explained by Pierre Gy's theory of sampling applied to finely divided materials. The assessment of a radionuclide inventory only based on a few number of radiochemical measurements leads in most cases to a gross over- or under-estimation that can be detrimental to graphite waste management. Prior to 2005, the EDF initial version for the radiological inventory of graphite was based on the maximum values of the measures, namely a very pessimistic way. In 2008, a scientific method was developed by EDF to evaluate the inventory by reverse activation calculation, in order to limit the overestimation. The radiological inventory computation principles can be compared to those of all engineering studies. First, the calculation is simplified by taking margins, and if the results are not satisfactory enough, some simplifications are suppressed to reduce these margins even if computation becomes more complicated. On EDF piles, the gain obtained in 2008 represented a factor 50 relative to the initial version of "3"6Cl, even with a very penalizing multiplicative factor for uncertainty. Today, the accurate calculation of the uncertainty no longer justifies such a factor. A gain of about 150 now occurs compared to the initial version of "3"6Cl. It is more than 2 orders of magnitude, which is already enough

The 40 year deadline for the French nuclear stock. Decision process, strengthening option and costs associated with a possible lifetime extension beyond 40 years of EDF reactors

International Nuclear Information System (INIS)

Marignac, Yves

2014-01-01

This report first proposes an overview of the lifetime extension problematic (PLEX) for nuclear plants in a general context (strategy of lifetime extension, and uncertainty and lack of return on experience), and in the case of France (emergence of a strategy of lifetime extension, economic challenges of an extension, uncertainty on investments required by an extension, risk of imposed implicit decisions). It gives a rather detailed overview of the French nuclear reactor fleet, of the status of EDF-operated reactors (construction stages, main lifetime events, regulatory situation of currently exploited reactors) and of their characteristics (common operation principle, main components, main safety functions, main considered severe accidents). It addresses safety issues related to ageing and to the post-Fukushima re-assessment (problematic, robustness increase, limits and weaknesses of additional safety assessments). It presents the currently performed improvements (safety referential, applicable strengthening requirements like safety re-examinations and requirements introduced after Fukushima, applied strengthening prescriptions drawn from additional safety assessments or from the third decennial inspection, with their limitations and perspectives). It proposes strengthening scenarios along with their challenges (in terms of requirement level, procedure and agenda). Three scenarios are proposed (degraded safety, preserved safety, strengthened safety) and analysed in terms of protection against aggressions, diffuse robustness, prevention and management of reactor accident, prevention and management of pool accidents, ultimate control and assistance means. Scenarios are finally compared in terms of costs

And thus EDF met information science; Ainsi EDF rencontra l`informatique

Energy Technology Data Exchange (ETDEWEB)

Caseau, P. [Electricite de France (EDF), 75 - Paris (France). Direction des Etudes et Recherches; Poujet, J. [Electricite de France (EDF), 75 - Paris (France)

1997-06-01

A historical review of the parallel evolution of digital computers and scientific calculations at Electricite de France, is presented, with numerous examples of computers (Bull, IBM, Cray) models, the improvement of their performances and the studies they allowed in the energy generation and transmission fields since the beginnings in 1955 and up to 1972 at EDF

EDF Group - Annual Report 2011. Electricity, long-term choices

International Nuclear Information System (INIS)

2012-01-01

The EDF Group is one of the world's leading energy companies, active in all areas from generation to trading and network management. It has a sound business model, evenly balanced between regulated and deregulated activities. With its first-rate human resources, R and D capability, expertise in engineering and operating generation plants and networks, as well as its energy eco-efficiency offers, the Group delivers competitive solutions that help ensure sustainable economic development and climate protection. The EDF Group is the leader in the French and UK electricity markets and has solid positions in Italy and numerous other European countries, as well as industrial operations in Asia and the United States. Everywhere it operates, the Group is a model of quality public service for the energy sector. This document is EDF Group's annual report for the year 2011. It contains information about Group profile, governance, business, development strategy, sales and marketing, positions in Europe and international activities. The document is made of several reports: the Activity and Sustainable Development Report, the Financial Report, the Management Report, the Report by the Chairman of EDF Board of Directors on corporate governance and internal control procedures, the Milestones report, the 'EDF at a glance' report, and the Sustainable Development Indicators

Chooz B1 start-up marked by total computer control

International Nuclear Information System (INIS)

Anon.

1995-01-01

The start-up of Chooz B1, the first of EdF's latest generation 1450 MWe N4 reactors, marks the first use in a nuclear power plant of a fully computerised control room. Working in partnership with EdF, Sema Group designed and supplied the advanced command and control system for this plant. (Author)

EDF studies on PWR vessel internal loading

International Nuclear Information System (INIS)

Bellet, S.; Vallat, S.

1998-01-01

EDF has undertaken some mechanics and thermal-hydraulics studies with the objective of mastering plant phenomena today and in order to numerically predict the behaviour of vessel internals on units planned for the future. From some justifications already underway after in operation incidents (wear and drop time of RCCA rods, fuel deflection, adapter cracks, baffle bolt cracks) we intend to control reactor vessel flows and mechanical behaviour of internal structures. During normal operation, thermal-hydraulic is the main load of vessel internals. The current approach consists of acquiring the capacity to link different calculations, taking care that codes are qualified for physical phenomena and complex 3D geometries. For baffle assembly, a more simple model of this structure has been used to treat the physical phenomena linked to the LOCA transient. Results are encouraging mainly due to code capacity progression (resolution and models), which allows more and more complex physical phenomena to be treated, like turbulence flow and LOCA. (author)

EDF - Quarterly Financial Information

International Nuclear Information System (INIS)

Trivi, Carole; Boissezon, Carine de; Hidra, Kader

2014-01-01

EDF's sales in the first quarter of 2014 were euro 21.2 billion, down 3.9% from the first quarter of 2013. At constant scope and exchange rates, sales were down 4.2% due to mild weather conditions, which impacted sales of electricity in France, gas sales abroad and trading activities in Europe. UK sales were nonetheless sustained by B2B sales due to higher realised wholesale market prices. In Italy, sales growth was driven by an increase in electricity volumes sold. The first quarter of 2014 also saw the strengthening of the Group's financial structure with the second phase of its multi-annual hybrid funding programme (nearly euro 4 billion equivalent) as well as the issue of two 100-year bonds in dollars and sterling aimed at significantly lengthening average debt maturity. 2014 outlook and 2014-2018 vision: - EDF Group has confirmed its financial objectives for 2014; - Group EBITDA excluding Edison: organic growth of at least 3%; - Edison EBITDA: recurring EBITDA target of euro 1 billion and at least euro 600 million in 2014 before effects of gas contract re-negotiations; - Net financial debt / EBITDA: between 2x and 2.5x; - Pay-out ratio of net income excluding non-recurring items post-hybrid: 55% to 65%. The Group has reaffirmed its goal of achieving positive cash flow after dividends, excluding Linky, in 2018

Ensuring the sustainability of EDF power plant operating capacity; Assurer la perennite des competences d'exploitation des centrales d'EDF

Energy Technology Data Exchange (ETDEWEB)

Francois, J. [Institut de Radioprotection et de Surete Nucleaire (IRSN), Service d' Etude des Facteurs Humains, 92 - Clamart (France)

2009-07-15

The life extension of the power plants is considered whereas EDF must face an acceleration of the retirement rates due to the fact that the first generations of the baby-boom are ageing 60 years, now. Between 2000 and 2006, EDF gradually set up a system of management of competencies. On the one hand, EDF moved from logic of relatively standardized training to a more individualized logic of acquisition of competencies. In addition, the objective of maintenance of internat competencies defined in 2000 was supplemented in 2003 by a prospective dimension intended to anticipate the departures in inactivity. Then in 2006 competencies of sub-contractors were taken into account. During this period I.R.S.N. has assessed 3 times this system of management. This article briefly presents the principal lessons driven from these evaluations. It accounts for the undeniable effort made by EDF to ensure the maintenance of its competencies. However, it stresses that a high level of vigilance is still needed because it is not stabilized already. (author)

General review of diagnostic systems in EDF PWR units

International Nuclear Information System (INIS)

Chevalier, R.; Brasseur, S.; Ricard, B.

1998-01-01

Since the beginning of the French nuclear program, Electricite de France (EDF) has looked for ways to improve the availability and safety of its nuclear units. Therefore, monitoring systems on turbogenerators, reactor coolant pumps, primary circuits and core internal structures were designed by the Research and Development Division and implemented with technologies available during the 1970's. However, mainly because of difficulties for data interpretation by plant personnel, EDF subsequently decided to design and develop different tools to help plant operators to process a diagnosis: - a new generation of the Monitoring and Diagnostic System called PSAD, - expert systems for diagnosis on reactor coolant pumps (RCP) 'DIAPO' and turbogenerator units (TG) 'DIVA', - diagnostic guides written for most equipment pending the installation of new monitoring and diagnosis systems. The first version of PSAD, installed in five units, performs on-line monitoring of the turbogenerator shaft line, steam inlet valves, the reactor coolant pumps and the generator stator. The second version not yet implemented, will include Loose Part Detection (LPD) and Core Internal Structure Monitoring (CISM). The level of diagnosis achieved by PSAD depends on the component monitored. The TG and RCP monitoring functions of PSAD compute high level diagnosis descriptors such as natural frequencies and long term trends but do not elaborate a diagnosis automatically. However, a diagnostic assistance window is available on-line, whenever a warning message is displayed, whether for immediate or later action. The window presents a diagnostic approach whose purpose is to find the causes of the symptoms observed. This diagnosis approach is automated in the DIVA and DIAPO expert systems. Numerous potential faults can be identified for both systems thanks to a hierarchy of abnormal situations. The user interactively answers questions when information is needed to progress in the diagnosis. The resulting

Company of the month: French EDF opts for nuclear power

International Nuclear Information System (INIS)

Jansen, Siw Linnea

2006-01-01

EDF is Europe's largest power company with 640 TWh produced in 2005 and 36,7 million customers in Europe. On a global scale the company has more than 40 million customers. EDF has significant positions in the four big energy markets in Europe: Germany, France, Great Britain and Italy. EDF has an ambitious investment program in the area of nuclear power, and holds that increased investments in this sector is the best and most beneficial way of keeping up with Europe's increasing energy demand (ml)

Assessment of the radiological inventory of EDF's graphite waste through an assimilation method

International Nuclear Information System (INIS)

Poncet, B.

2014-01-01

The definitive disposal of graphite from the decommissioned UNGG reactors (Chinon A3, Saint-Laurent A1, Saint-Laurent A2 and Bugey 1) has required a radiological inventory of the irradiated graphite. This study focuses on Cl 36 that is produced by neutron absorption on Cl 35 that was present initially in graphite as an impurity (about 80 mg/t of Cl initially in Bugey 1 graphite)). It appears that the changes of Cl 36 concentration along the height of a stack of graphite do neither fit the changes in the neutron flux nor the changes in the graphite temperature. This fact is explained by the high level of purity of the graphite and the nugget effect. Challenged by the absence of spatial correlation of the Cl 36 concentration, an EDF's team has developed an assimilation method based on comparisons between calculations and measurements in order to get a conservative inventory. (A.C.)

Ageing management of EDF NPP concrete structures: from the theory to the reality

International Nuclear Information System (INIS)

Gallitre, E.; Brunet, C.

2009-01-01

This paper presents EDF practice about concrete structure ageing management, from the materials analysis to the formal procedure which allows EDF to increase 900 MWe NPP lifetime until 40 years. This practice is based on a methodology which identifies every ageing mechanism, then both plants feedback and state of the art are screened and conclusions are drawn up and taken into account into an 'ageing analysis data sheet'. That leads to a collection of 57 data sheets: if the data sheet conclusion is not clear enough, then a more detailed report is launched. This ageing management detailed report gathers every theoretical knowledge and monitoring data; its objective is to propose a solution for ageing management: this solution can include more inspections or specific research development. After a first practise on the 34 French 900 MWe PWR units, only 2 generic ageing management detailed reports have been needed for the civil engineering part: one about reactor building containment which focuses on two mechanisms: steel liner corrosion and pre-stress losses, and one about other structures which focuses on Alkali-Aggregate Reaction (AAR). (authors)

EDF group - Reference Document 2009

International Nuclear Information System (INIS)

2010-01-01

The EDF group is an integrated energy company with a presence in a wide range of electricity-related businesses: generation, transmission, distribution, supply and energy trading. It is France's leading electricity operator and has a strong position in the three other main European markets (Germany, the United Kingdom and Italy), making it one of Europe's leading electrical players as well as a recognized player in the gas industry. With worldwide installed power capacity totaling 136.3 GW as of December 31, 2009 (134.0 GW in Europe) and global energy generation of 618.5 TWh, it has the largest generating capacity of all the major European energy corporations with the lowest level of CO 2 emissions due to the significant proportion of nuclear and hydroelectric power in its generation mix. The EDF group supplies gas, electricity, and associated services to more than 37.9 million customer accounts worldwide (including approximately 27.7 million in France). The EDF group's businesses reflect its adoption of a model aimed at finding the best balance between French and international activities, competitive and regulated operations and based on an upstream-downstream integration. In 2009, the Group's consolidated revenues were euros 66.3 billion, the net income (Group share) was euros 3.9 billion, and earnings before interest, tax, depreciation and amortization was euros 17.5 billion. This document is EDF Group's Reference Document and Annual Financial Report for the year 2009. It contains information about: the Group activities, risk factors, Business, Organizational structure, Property plant and equipment, Operating and financial review, Capital resources and cash flows, Research and Development, Patents and Licenses, Information on trends, Financial outlook, Administrative, management, and supervisory bodies and senior management, Compensation and benefits, Functioning of the administration and management bodies, Employees/Human resources

Report from the commission about the industrial and financial project of EdF; Rapport de la commission sur le projet industriel et financier d'EDF

Energy Technology Data Exchange (ETDEWEB)

NONE

2004-07-01

This report takes stock of the work carried out by the commission appointed by the French ministry of economy, finances and industry about the industrial and financial project of Electricite de France (EdF) in the framework of the liberalization of European energy markets. The report presents the conclusions of the commission about EdF's position in the new competition context, about the financial position of the group and about the foreseeable strategic options and their consequences in terms of equity fund needs. 5 appendixes present: the evolution of electricity prices, EdF and the energy policy, the electricity market and the competition in Europe, the EdF group: presentation and main adaptation stakes, the financial situation of EdF group. (J.S.)

EDF - Electricite de France. Results 1997. 1997: The enterprise prepares for competition; EDF - Electricite de France. Resultats 1997. 1997: L'entreprise se prepare a la concurrence

Energy Technology Data Exchange (ETDEWEB)

NONE

1997-07-01

In 1997 the energy production of the French Electricity Company EDF (Electricite de France) reached the value of 457.7 billion kWh, of which 82% is nuclear, 14% hydraulic and 4% classical thermal power. The management of maintenance annual intervention allowed and availability of the nuclear sector of 82.6%. The safety level was also maintained at a high value. The quality of the supplied electricity has been improved continuously: the annual average interruption duration for low voltage supply has been reduced from 1.35 h in 1996 to 1.06 h in 1997. Sale volume in France (369.9 billion kWh) is 0.7% lower than in 1996. EDF remains the first electricity exporter in Europe. The EDF has strengthened in 1997 its international development. FF 4.2 billions have been invested in Europe, Latin America and Asia. A social policy has been developed in favor of employee, particularly, young people acting toward enterprise's development, better management and working time reduction. In the frame of its relation with the state the EDF Company has signed a new contract for the period 1997-2000 which will allow reaching its ambition: becoming a public service of reference in Europe and its promotion as leader in industrial services, in the electric sector of France and on the international market. The results of this first year has confirmed the course adopted. The report contains the following seven chapters: 1. Relations with the state and the evolution of the institutional frame; 2. The financial results and administration; 3. Technical results; 4. Development in France; 5. International development; 6. Social and human resources; 7. Environment.

Ensuring the sustainability of EDF power plant operating capacity

International Nuclear Information System (INIS)

Francois, J.

2009-01-01

The life extension of the power plants is considered whereas EDF must face an acceleration of the retirement rates due to the fact that the first generations of the baby-boom are ageing 60 years, now. Between 2000 and 2006, EDF gradually set up a system of management of competencies. On the one hand, EDF moved from logic of relatively standardized training to a more individualized logic of acquisition of competencies. In addition, the objective of maintenance of internat competencies defined in 2000 was supplemented in 2003 by a prospective dimension intended to anticipate the departures in inactivity. Then in 2006 competencies of sub-contractors were taken into account. During this period I.R.S.N. has assessed 3 times this system of management. This article briefly presents the principal lessons driven from these evaluations. It accounts for the undeniable effort made by EDF to ensure the maintenance of its competencies. However, it stresses that a high level of vigilance is still needed because it is not stabilized already. (author)

Group EDF annual report 2005 sustainable development

International Nuclear Information System (INIS)

2006-05-01

The EDF Group's Sustainable Development Report for 2005 is designed to report on Group commitments particularly within its Agenda 21, its ethical charter, and the Global Compact. It has also been prepared with reference to external reference frameworks: the Global Reporting Initiative (GRI) guidelines and the French New Economic Regulations (NRE) contained in the May 15, 2001 French law. It contents the Chairman's statement, the evaluation of renewing and sharing commitments with all stakeholders, the managing local issues, EDF responses to the challenges of the future. Indicators are also provided. (A.L.B.)

A narrow linewidth tunable single longitudinal mode Ga-EDF fiber laser

Science.gov (United States)

Mohamed Halip, N. H.; Abu Bakar, M. H.; Latif, A. A.; Muhd-Yasin, S. Z.; Zulkifli, M. I.; Mat-Sharif, K. A.; Omar, N. Y. M.; Mansoor, A.; Abdul-Rashid, H. A.; Mahdi, M. A.

2018-05-01

A tunable ring cavity single longitudinal mode (SLM) fiber laser incorporating Gallium-Erbium co-doped fiber (Ga-EDF) gain medium and several mode filtration techniques is demonstrated. With Ga-EDF, high emission power was accorded in short fiber length, allowing shorter overall cavity length and wider free spectral range. Tunable bandpass filter, sub-ring structure, and cascaded dissimilar fiber taper were utilized to filter multi-longitudinal modes. Each of the filter mechanism was tested individually within the laser cavity to assess its performance. Once the performance of each filter was obtained, all of them were deployed into the laser system. Ultimately, the 1561.47 nm SLM laser achieved a narrow linewidth laser, optical signal-to-noise ratio, and power fluctuation of 1.19 kHz, 61.52 dB and 0.16 dB, respectively. This work validates the feasibility of Ga-EDF to attain a stable SLM output in simple laser configuration.

EdF in the core of UK's nuclear industry... before expecting more

International Nuclear Information System (INIS)

Moal, C.

2008-01-01

With the announcement at the end of September 2008 of EdF's friendly takeover bid on British Energy, the French group confirms its will of dominating the European nuclear industry before going back to the assault of the US market. Together, EdF and British Energy (owner of 8 NPPs (9.5 GW) and 1 coal-fired power plant (2 GW)) will make a turnover of 11.9 billion euro with 19800 employees and 85.6 TWh of production. Short paper. (J.S.)

Design, manufacturing and commissioning of mobile unit for EDF (Dow Chemical process)

International Nuclear Information System (INIS)

Cangini, D.; Cordier, J.P.; PEC Engineering, Osny, France)

1985-01-01

To process their spent ion exchange resins and the liquid wastes, EDF has ordered from PEC a mobile unit using the DOW CHEMICAL binder. This paper presents the EDF's design requirements as well as the new French regulation for waste embedding. The mobile unit was started in January 1983 and commissioned successfully in January 1985 in the TRICASTIN EDF's power plant

Catalogue of EDF`s technical specifications (HN reference). Centre of standardization; Catalogue des specifications techniques EDF (reference HN). Centre de normalisation

Energy Technology Data Exchange (ETDEWEB)

1998-12-31

This document edited by Electricite de France (EdF), is a catalogue of the French standard documents relative to any type of electrical material and equipment and which contain the technical specifications of these materials and equipments. A brief description of these specifications is given for each type of material or equipment listed. (J.S.)

EDF group - Reference Document 2005

International Nuclear Information System (INIS)

2006-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. With an installed capacity of 130.8 GW (123.9 GW in Europe), it contributes to the supply of energy and services to more than 40 million customers throughout the world (with approximately 36.7 million customers in Europe, more than 28 million of whom are in France). The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. In 2005, the Group recorded consolidated sales of euros 51,051 million, net income (Group share) of euros 3,242 million, and it achieved earnings before interests, taxes, depreciation and amortization of euros 13,010 million. This document is EDF Group's Reference Document for the year 2005. It contains information about: the Group activities, risk factors, Business Overview, Organizational Structure, Property, Plants and Equipment, Operating and Financial Review, Capital Resources, Research and Development, Patents and Licences, Trend Information, Financial Prospects, Administrative, Management, and Supervisory Bodies and Senior Management, Remuneration and Benefits, Board Practices, Employees/Human Resources, Major Shareholders, Related Party Transactions, Financial Information Concerning the Company's Assets and Liabilities, Financial Position and Profits and Losses, Material Contracts, Information on Holdings etc

Operation problems as viewed by EDF

International Nuclear Information System (INIS)

Cheimanoff, Andre; Gaborit, Jean; Thom, Roger

1983-01-01

The installation of a plant such as Eurodif, whose power will reach, when fully operational, a maximum of 3,200 MW, and of a nuclear power plant of 4x900 MW, such as the one located in the Tricastin area, has considerable effects on the structure and operation of the EDF's network, both at the national and regional levels. The paper presents the situation regarding the Tricastin-Eurodif complex in the context of the EDF's network, the main operation problems that are encountered and the organization that had to be created to tackle these problems. Finally, it affords the opportunity to give an appreciation of the situation about the operation of the complex in 1982 [fr

75 FR 57911 - Application to Export Electric Energy; EDF Trading North America, LLC

Science.gov (United States)

2010-09-23

... DEPARTMENT OF ENERGY [OE Docket No. EA-373] Application to Export Electric Energy; EDF Trading...)). On August 30, 2010, DOE received an application from EDF for authority to transmit electric energy... service area. The electric energy that EDF proposes to export to Mexico would be surplus energy purchased...

75 FR 26202 - Application To Export Electric Energy; EDF Trading North America, LLC

Science.gov (United States)

2010-05-11

... DEPARTMENT OF ENERGY [OE Docket No. EA-367] Application To Export Electric Energy; EDF Trading...)). On April 27, 2010, DOE received an application from EDF for authority to transmit electric energy... franchised service area. The electric energy that EDF proposes to export to Canada would be surplus energy...

Report from the commission about the industrial and financial project of EdF

International Nuclear Information System (INIS)

2004-01-01

This report takes stock of the work carried out by the commission appointed by the French ministry of economy, finances and industry about the industrial and financial project of Electricite de France (EdF) in the framework of the liberalization of European energy markets. The report presents the conclusions of the commission about EdF's position in the new competition context, about the financial position of the group and about the foreseeable strategic options and their consequences in terms of equity fund needs. 5 appendixes present: the evolution of electricity prices, EdF and the energy policy, the electricity market and the competition in Europe, the EdF group: presentation and main adaptation stakes, the financial situation of EdF group. (J.S.)

EDF - Electricite de France. Results 1997. 1997: The enterprise prepares for competition; EDF - Electricite de France. Resultats 1997. 1997: L'entreprise se prepare a la concurrence

Energy Technology Data Exchange (ETDEWEB)

NONE

1997-07-01

In 1997 the energy production of the French Electricity Company EDF (Electricite de France) reached the value of 457.7 billion kWh, of which 82% is nuclear, 14% hydraulic and 4% classical thermal power. The management of maintenance annual intervention allowed and availability of the nuclear sector of 82.6%. The safety level was also maintained at a high value. The quality of the supplied electricity has been improved continuously: the annual average interruption duration for low voltage supply has been reduced from 1.35 h in 1996 to 1.06 h in 1997. Sale volume in France (369.9 billion kWh) is 0.7% lower than in 1996. EDF remains the first electricity exporter in Europe. The EDF has strengthened in 1997 its international development. FF 4.2 billions have been invested in Europe, Latin America and Asia. A social policy has been developed in favor of employee, particularly, young people acting toward enterprise's development, better management and working time reduction. In the frame of its relation with the state the EDF Company has signed a new contract for the period 1997-2000 which will allow reaching its ambition: becoming a public service of reference in Europe and its promotion as leader in industrial services, in the electric sector of France and on the international market. The results of this first year has confirmed the course adopted. The report contains the following seven chapters: 1. Relations with the state and the evolution of the institutional frame; 2. The financial results and administration; 3. Technical results; 4. Development in France; 5. International development; 6. Social and human resources; 7. Environment.

The use and evolution of the CEA research reactors

International Nuclear Information System (INIS)

Rossillon, F.; Chauvez, C.

1964-01-01

organic liquids under irradiation. The equipments of Melusine are now being modernized. Siloe, another swimming-pool reactor, has been operating at 15 MW since the end of 1963. The performances achieved constitute a considerable progress in the field of swimming-pool reactors, since the fluxes obtained with Siloe are in the same order of magnitude than those which needed till now a tank type structure, whose numerous disadvantages in the fitting of experiments are well known. Siloe will be used mostly in the study of structural materials, graphites, refractory fissile materials, and for solid state physics. The reactor Pegase, in service in the Cadarache Nuclear Centre since 1963, is intended solely for testing full-scale fuel elements of EDF and EL 4 types. The current programme, for the eight loops of the reactor, covers the elements for the reactors EDF 2, EDF 3 and EL 4. New loops are in the course of being studied for the fuel elements of the EDF 4 and EDF 5 reactors. The general line of the CEA programmes has shown up the considerable need for fast neutron irradiations. The reactor Osiris which is in the course of being constructed will serve to complement the CEA's equipment in this field and at the same time fill the gap which will be left in the near future in the Centre de Saclay by the closing down of EL 2. Osiris is a light water reactor whose special structure will allow it to function at 50 MW without the disadvantages usually associated with the presence of a heavy waterproof tank. This reactor, which should be put into service in 1966, is mainly intended for the investigation of structural materials, graphite and refractory fuels; it will also serve to increase the production of high specific activity isotopes, and to develop activation analysis techniques. (authors) [fr

EDF decommissioning and dismantling policy a global commitment to safety, environment and cost efficiency of nuclear energy

International Nuclear Information System (INIS)

Rondeau, J.

2001-01-01

Until recently, EDF's policy regarding the dismantling of its decommissioned nuclear power plants was to reach 'level 2' (release of non-nuclear facilities) and to postpone final dismantling for another 30-40 years. Today, some studies suggest that a full deconstruction program of the first generation NPPs (9 units) could be optimized over the period 2000 - 2025. EDF has acquired during the last ten years an unique experience, both as an operator and as an engineering company, in the frame of the decommissioning programme of its own NPPs. Many types of reactors, including graphite moderated one, PWR, are at varying stages of the dismantling process.Plant operation quality is at the core of a satisfactory control of releases. Over the last decade, as a result of the efforts of all operating sites associated with good in-house operating practice feedback, the overall release volume has been divided by two, and the release activity by one hundred. Another issue given increased attention is radiological cleanliness. EDF-DPN launched a 'radiological cleanliness' action plan revolving around two main themes: increased monitoring of nuclear-related transportations, site entrance and access to controlled areas, along with on-site radiological cleanliness, particularly during maintenance work tasks. Progress is already apparent in several points at issue and the overall objective of the action plan should be attained. (author)

Fessenheim simulator for OECD Halden Reactor Project

International Nuclear Information System (INIS)

Oudot, G.; Bonnissent, B.

1998-01-01

A full scope NPP simulator is presently under manufacture by THOMSON TRAINING and SIMULATION (TTandS) in Cergy (France) for the OECD HALDEN REACTOR PROJECT. The reference plant of this simulator is the Fessenheim CP0 PWR power plant operated by the French utility EDF, for which TTandS has delivered a full scope training simulator in mid 1997. The simulator for HALDEN Reactor Project is based on a software duplication of the Fessenheim simulator delivered to EDF, ported on the most recent computers and O.S. available. This paper outlines the main features of this new simulator generation which reaps benefit of the advanced technologies of the SIPA design simulator introduced inside a full scope simulator. This kind of simulator is in fact the synthesis between training and design simulators and offers therefore added technical capabilities well suited to HALDEN needs. (author)

EDF Energies Nouvelles. Consolidated financial statements at 31 December 2008 Prepared in accordance with IFRSs

International Nuclear Information System (INIS)

2009-01-01

EDF Energies Nouvelles is a world leader in renewable energy electricity. The company develops, builds and operates clean energy power plants both for its own account and for third parties. Historically, EDF Energies Nouvelles primarily developed its business in two geographical areas, Europe and North America (U.S., Canada and Mexico). EDF Energies Nouvelles is a subsidiary of EDF, helping the Group to achieve its renewable energy goals. The EDF Group generates low-carbon electricity around the world and actively participates in the energy transition. EDF Energies Nouvelles prioritizes development of wind and photovoltaic solar capacity. As an integrated operator with global reach, EDF Energies Nouvelles covers the entire renewable energy chain, from development to operation and maintenance, and manages all project phases in-house. This document is EDF Energies Nouvelles's registration document for the year 2008. It contains information about Group profile, governance, business, investments, property, plant and equipment, management, financial position, employees, shareholders, etc. The document includes the group's consolidated financial statements at 31 December 2008

EDF Energies Nouvelles. Consolidated financial statements at 31 December 2007 Prepared in accordance with IFRSs

International Nuclear Information System (INIS)

2008-01-01

EDF Energies Nouvelles is a world leader in renewable energy electricity. The company develops, builds and operates clean energy power plants both for its own account and for third parties. Historically, EDF Energies Nouvelles primarily developed its business in two geographical areas, Europe and North America (U.S., Canada and Mexico). EDF Energies Nouvelles is a subsidiary of EDF, helping the Group to achieve its renewable energy goals. The EDF Group generates low-carbon electricity around the world and actively participates in the energy transition. EDF Energies Nouvelles prioritizes development of wind and photovoltaic solar capacity. As an integrated operator with global reach, EDF Energies Nouvelles covers the entire renewable energy chain, from development to operation and maintenance, and manages all project phases in-house. This document is EDF Energies Nouvelles's registration document for the year 2007. It contains information about Group profile, governance, business, investments, property, plant and equipment, management, financial position, employees, shareholders, etc. The document includes the group's consolidated financial statements at 31 December 2007

EDF Energies Nouvelles. Consolidated financial statements at 31 December 2006 Prepared in accordance with IFRSs

International Nuclear Information System (INIS)

2007-01-01

EDF Energies Nouvelles is a world leader in renewable energy electricity. The company develops, builds and operates clean energy power plants both for its own account and for third parties. Historically, EDF Energies Nouvelles primarily developed its business in two geographical areas, Europe and North America (U.S., Canada and Mexico). EDF Energies Nouvelles is a subsidiary of EDF, helping the Group to achieve its renewable energy goals. The EDF Group generates low-carbon electricity around the world and actively participates in the energy transition. EDF Energies Nouvelles prioritizes development of wind and photovoltaic solar capacity. As an integrated operator with global reach, EDF Energies Nouvelles covers the entire renewable energy chain, from development to operation and maintenance, and manages all project phases in-house. This document is EDF Energies Nouvelles's registration document for the year 2006. It contains information about Group profile, governance, business, investments, property, plant and equipment, management, financial position, employees, shareholders, etc. The document includes the group's Consolidated financial statements at 31 December 2006

The contractual agreement State-EDF signature the 8. april 1997; Signature du contrat d`entreprise Etat-EDF le 8 avril 1997

Energy Technology Data Exchange (ETDEWEB)

NONE

1999-12-31

The corporation agreement between the State and Electricite De France (EDF) was signed for the period of 1997-2000. With the agreement of the State, this new contract brings to EDF the ways to progress: becoming the reference public utilities in Europe and asserting its authority as an industrial corporation, leader of the electrical service in France and in international markets. The agreement precise the main orientations of the development plan and the economical policy. (A.L.B.)

The contractual agreement State-EDF signature the 8. april 1997; Signature du contrat d`entreprise Etat-EDF le 8 avril 1997

Energy Technology Data Exchange (ETDEWEB)

NONE

1998-12-31

The corporation agreement between the State and Electricite De France (EDF) was signed for the period of 1997-2000. With the agreement of the State, this new contract brings to EDF the ways to progress: becoming the reference public utilities in Europe and asserting its authority as an industrial corporation, leader of the electrical service in France and in international markets. The agreement precise the main orientations of the development plan and the economical policy. (A.L.B.)

EDF/EPRI collaborative program on operator reliability experiments

International Nuclear Information System (INIS)

Villemeur, A.; Meslin, T.; Mosneron, F.; Worledge, D.H.; Joksimovich, V.; Spurgin, A.J.

1988-01-01

Electricite de France (EDF) and Electric Power Research Institute (EPRI) have been involved in human reliability studies over the last few years, in the context of improvements in human reliability assessment (HRA) methodologies, and have been following a systematic process since 1982 which consists of addressing the following five ingredients: - First, classify human interactions into a limited number of classes. - Second, introduce an acceptable framework to organize the application of HRA to PRA studies. - Third, select approach(es) to quantification. - Fourth, test promising models. - Fifth, establish an appropriate data base for tested model(s) with regard to specific applications. EPRI has just recently completed Phase I of the fourth topic. This primarily focused on testing the fundamental hypotheses behing the human cognitive reliability (HCR) correlation, using power plant simulators. EDF has been carrying out simulator studies since 1980, both for man-machine interface validation and HRA data collection. This background of experience provided a stepping stone for the EPRI project. On the other hand, before 1986, EDF had mainly been concentrating on getting qualitative insights from the tests and lacked experience in quantitative analysis and modeling, while EPRI had made advances in this latter area. Before the EPRI Operator Reliability Experiments (ORE) project was initiated, it was abundantly clear to EPRI and EDF that cooperation between the two could be useful and that both parties could gain from the cooperation

Programs of monitoring of the steam generators of EdF nuclear power plants

International Nuclear Information System (INIS)

2001-01-01

This decision from the French authority of nuclear safety (ASN) modifies the decision DSIN/GRE-BCCN no 000632 from October 31, 2000 concerning the preventive maintenance programs of the steam generators of Electricite de France (EdF) reactors. The main themes of the previous decision are not changed, i.e. the improvement of circumferential crack detection means, the reinforcement of the external skin control of tubes and the correction of vibrational instabilities for a given family of tubes. The modification concerns only the paragraph 2.b relative to the internal crack control of the 600 MA alloy tubes in the rolling transition zone. This paragraph is abrogated. (J.S.)

SME-SMI, professionals, territorial authorities: EDF in an open market

International Nuclear Information System (INIS)

2004-07-01

On July 1, 2004, the opening of the electricity market to competition has crossed a new step. In France, more than 2.3 millions of customers - professionals, companies, and territorial authorities - can freely chose their power supplier, which represents 70% of the electricity market. In this open market, Electricite de France (EdF), the French electric utility, has promised to all its clients an optimum security of power supply prices by fixing its price offers with respect to the prices of regulated tariffs and by indexing them with respect to their future evolutions. This document presents the new rules of the electricity market and the different services offered by EdF. (J.S.)

Developments in natural uranium - graphite reactors; Developpement des reacteurs a graphite et uranium naturel

Energy Technology Data Exchange (ETDEWEB)

Bourgeois, J [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires; Saitcevsky, B [Electricite de France (EDF), 75 - Paris (France)

1964-07-01

The French natural uranium-graphite power-reactor programme has been developing - from EDF 1 to EDF 4 - in the direction of an increase of the unit power of the installations, of the specific and volume powers, and of an improvement in the operational security conditions. The high power of EDF 4 (500 MWe) and the integration of the primary circuit into the reactor vessel, which is itself made of pre-stressed concrete, make it possible to make the most of the annular fuel elements already in use in EDF 1, and to arrive thus at a very satisfactory solution. The use of an internally cooled fuel element (an annular element) has led to a further step forward: it now becomes possible to increase the pressure of the cooling gas without danger of causing creep in the uranium tube. The use of a pre-stressed concrete vessel makes this pressure increase possible, and the integration of the primary circuit avoids the risk of a rapid depressurization which would be in this case a major danger. This report deals with the main problems presented by this new type of nuclear power station, and gives the main lines of research and studies now being carried out in France. - Neutronic and thermal research has made it possible to consider using large size fuel elements (internal diameter = 77 mm, external diameter 95 mm) while still using natural uranium. - The problems connected with the production of these elements and with their in pile behaviour are the subject of a large programme, both out of pile and in power reactors (EDF 2) and test reactors (Pegase). - The increase in the size of the element leads to a large lattice pitch (35 to 40 cm). This makes it possible to consider having one charging aperture per channel or for a small number of channels, whether the charge machine be inside or outside the pressure vessel. In conclusion are given the main characteristics of a project for a 500 MWe power station using such a fuel element. In particular this project is compared to EDF 4

Functional approaches: a new view of nuclear reactors management

International Nuclear Information System (INIS)

Papin, B.

2000-01-01

Since many years a research program on the future reactors command, has been decided by the CEA, in collaboration with EDF and Framatome. This program aims to enhance the reactor safety by a better control of the installation in any exploitation situations. The paper presents the state of the art and the first reflexions. (A.L.B.)

EDF - 2015 full-year results: all targets reached, Strong operating performance in adverse market conditions, 2018 ambition reiterated

International Nuclear Information System (INIS)

2016-01-01

A key player in energy transition, the EDF Group is an integrated electricity company, active in all areas of the business: generation, transmission, distribution, energy supply and trading, energy services. A global leader in low-carbon energies, the Group has developed a diversified generation mix based on nuclear power, hydropower, new renewable energies and thermal energy. The Group is involved in supplying energy and services to approximately 37.6 million customers, of which 27.8 million in France. The Group generated consolidated sales of Euro 75 billion in 2015, of which 47.2% outside of France. EDF is listed on the Paris Stock exchange. EDF achieved all its targets in 2015. The year was marked by strong operational performance, reflecting the significant efforts the teams made. With the end of the regulated Yellow and Green Tariffs, most clients turned to EDF. Nuclear output reached its highest level, since 2011 in France, and since 2005 in the United Kingdom. EDF is also continuing its significant development in renewable energy, with an additional 1 GW of net installed capacity. The transformation of EDF Group is essential in the unfavourable market conditions. EDF has embarked on this transformation, and is accelerating innovation to serve the energy transition

Flow Accelerated Corrosion mitigation at EDF with BRT-CICEROTM. Feedback of version 3.2 and future trends

International Nuclear Information System (INIS)

Moutrille, Marie-Pierre; Trevin, Stephane; Qiu, Gonghao; Miller, Cecile; Mellin, Nicolas

2012-09-01

EDF has developed during these 15 last years software called BRT-CICERO TM for the surveillance of the secondary piping system of its Pressurized Water Reactors (PWRs). This software enables the operator to calculate the FAC wear rates taking into account all the influencing parameters such as: pipe isometrics, chromium content of the steel, chemical conditioning and operating parameters of the secondary circuit (temperature, pressure, etc.). This is a major tool for the operators to organize the maintenance and to plan the inspections. In the framework of the French pressure vessel law issued on March 15, 2000, the software BRT-CICERO TM has been recognized by the French authority for the FAC surveillance on the secondary pressure piping lines of the EDF 58 NPPs. It takes advantage of the experience feedback of the French fleet, of the R and D improvements (especially from the laboratory tests conducted on EDF's CIROCO loop) and is frequently updated. The software is based on specific calculation modules, which are: - thermodynamics module, - chemistry module, - void module, - geometric factor module to take into account the effect of singularities on hydraulics, - FAC kinetics module, - codes and standards module for minimum required thickness calculations. This architecture allows independent and complete validation of each model calculation and therefore the quality of software. This paper describes the simplified model and the calculation modules. The performances of BRT-CICERO TM version 3 are examined with a statistical analysis allowing estimating the accuracy of calculation for each components and position into the pipelines. A computational fluid dynamic study has been initiated to confirm the geometrical coefficients which allow to take into account the fittings. All these studies and many others brought EDF to propose evolutions both on the plan thermodynamics and chemical. These evolutions are discussed in this topic. (authors)

Silva. EDF two-phase 1D annular model of a CFB boiler furnace

Energy Technology Data Exchange (ETDEWEB)

Montat, D.; Fauquet, Ph. [Electricite de France (EDF), 78 - Chatou (France). Researckh and Development Div.; Lafanechere, L.; Bursi, J.M. [Electricite de France (EDF) (France). Construction Div.

1997-01-01

SILVA computer code is used for the modelling of the thermal-hydraulics and of the combustion of a coal-fired CFBC solid loop. In a first step, only the furnace is considered. The model is based on a 1D annular two phases description of the hydrodynamics. The model is based on particle mass balances and pressure drop calculations. A basic combustion model is incorporated into this model. The coal combustion is divided in two phases, the combustion of volatile matter and the heterogeneous combustion. The model has been developed within LEGO software and can be included into the global model of the solid loop developed by EDF. (author) 26 refs.

The experimental program of neutronphysics for advanced water reactors

International Nuclear Information System (INIS)

Martin-Deider, L.; Cathalu, S.; Santamarina, A.; Gomit, M.

1985-11-01

The C.E.A. and E.D.F. has jointly undertaken a program of experimental studies on under-moderated water lattices, with mixed oxide fuel UO 2 -PuO 2 . Undermoderated lattices offer high conversion ratios. This type of lattice could limit in the future the natural uranium consumption of pressurized water reactors. This experimental program is aimed at qualifying neutron transport calculations in a large range of moderating ratio (between 0.5 and 1.5). It includes three experiments: ERASME, a critical experiment of large size in the EOLE reactor at Cadarache; ICARE, an irradiation experiment in the MELUSINE reactor at Grenoble; and an experiment to measure the reactivity effects by oscillations in the MINERVE reactor at Cadarache [fr

EDF Energy Holdings Limited, Registered Number 06930266, Annual report and financial statements 31 December 2016

International Nuclear Information System (INIS)

2017-01-01

EDF Energy Holdings Limited and subsidiaries make up EDF Energy. The companies' principal activities are to provide and supply electricity and gas to commercial, residential and industrial customers, and to generate electricity through a portfolio of generation assets including nuclear, coal fired, gas and renewable generation. EDF Energy is also involved in the construction of new build nuclear assets. This document is the annual report and financial statements of the company for the year 2016. Contents: 1 - Strategic report; 2 - Directors' report; 3 - Directors' responsibility statement; 4 - Independent Auditor's report to the Members of EDF Energy Holdings Limited; 5 - Consolidated income statement; 6 - Consolidated statement of comprehensive income; 7 - Consolidated balance sheet; 8 - Consolidated cash flow statement; 9 - Consolidated statement of changes in equity 10 - Notes to the consolidated financial statements; 11 - Company balance sheet; 12 - Company statement of changes in equity; 13 - Notes to the Company financial statements

EDF - Electricite de France, 2010 annual Results

International Nuclear Information System (INIS)

2011-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's annual Results for 2010. It is made of several reports: The Annual Results press release, the 2010 Annual Results presentation and its appendices, the 2010 Financial Report, the transcript of the analysts conference, the 3rd quarter 2010 sales press release, the 3rd quarter 2010 Sales presentation, the 3rd quarter 2010 Sales transcript, The first quarter 2010 Sales press release, the first quarter 2010 Sales presentation, the 2010 Half-year results press release, the 2010 Half-year results presentation and its appendices, the Consolidated financial statements at 30 June 2010, the Management Report for the first half 2010, the 2010 Half-year Statutory Auditors' report, the transcript of the Investors and Analysts conference

EDF - Electricite de France, 2016 annual Results

International Nuclear Information System (INIS)

2017-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's annual Results for 2016. It is made of several reports: the Annual Results press release, the 2016 Group Annual Results presentation and its appendices, the 2016 Management report and Group results, the Consolidated Financial Statements at 31 December 2016, the Statutory Auditors' report, the transcript of the Investors and Analysts conference, the 3rd quarter 2016 presentation with its appendices and the transcript of the conference, the first quarter 2016 presentation with its appendices and the transcript of the conference, the 2016 Half-year results presentation with its appendices, the Financial Report for the first half 2016, the Consolidated Financial Statements at 30 June 2016, the 2016 Half-year Statutory Auditors' report, the transcript of the presentation to investors and analysts

EDF - 2004 annual results, Financial statements 2004

International Nuclear Information System (INIS)

Gadonneix, Pierre; Camus, Daniel

2005-01-01

As the world's biggest electricity generator, the EDF Group covers every sector of expertise, from generation to trading and transmission grids. EDF builds on the expertise of its people, its R and D and engineering skills, its experience as a leading industry operator and the attentive support of its customers to deliver competitive solutions that successfully reconcile economic growth with climate protection. This document presents the 2004 annual results of the Group (key figures, financial results, strategy and perspectives) as well as its Consolidated financial statements at 31 December 2004: 1. Accounting principles and methods; 2. French law of 9 August 2004 on the Public Electricity and Gas Services and Electricity and Gas Companies; 3. Significant events of 2004; 4. Changes in the scope of consolidation; 5. Information by business segment and geographical area; 6. Sales; 7. Purchases and other external expenses; 8. Average workforce; 9. Other operating income and expenses; 10. Net (increase) decrease in provisions; 11. Interest expenses; 12. Foreign exchange result; 13. Other financial income and expenses; 14. Income taxes

Zinc injection implementation process at EDF: risk analysis, chemical specifications and operating procedures

International Nuclear Information System (INIS)

Tigeras, A.; Stutzmann, A.; Bremnes, O.; Claeys, M.; Ranchoux, G.; Segura, J.C.; Errera, J.; Bonne, S.

2010-01-01

Zinc's ability to replace cobalt from oxides of primary circuit surfaces has provided the first motivation for implementing the zinc addition in BWRs since the mid-1980s. The beneficial results regarding dose reductions have been demonstrated; therefore, this practice has been extended to PWRs since the 1990s, not only for radiation fields considerations, but also for reducing PWSCC. From the beginning of the 2000s, further reasons to inject zinc associated with the fuel management process have been identified (e; g; power increase, high burn-up, and/or cycle length increase). These evolutions must be accompanied by an adapted chemistry program in order to mitigate the crud deposition on fuel assemblies and the consequent AOA/CIPS or localized clad corrosion risks. The source term reduction (due to the decrease of the general corrosion rate of several materials) and the absence of negative impact on alloy cladding in the presence of zinc in the primary coolant are the main reasons for selecting zinc injection as a reliable option for preventing and/or mitigating the effects of fuel deposits. These three PWR motivations (field radiation, components performance, and fuel reliability) are also the major objectives of CANDU®, WWER, and new reactors (EPR, AP1000), where the zinc injection feasibility analyses are in progress in order to improve the safety of their operating conditions. With the purpose of achieving the optimal results of zinc injection, the process's implantation in a unit must be conducted with an appropriate risk analysis, covering all possible domains affected by this primary coolant chemistry modification : safety, fuel and component performance, radioprotection, waste, environment, human and installation security, human and material resources, staff formation, and documentation. EDF has performed a complete analysis of this enlarged scope, relying upon theoretical and experimental results as well as NPP feedback. This paper describes EDF

EDF group. Annual report 2001

Energy Technology Data Exchange (ETDEWEB)

NONE

2002-05-01

This document is the English version of the 2001 annual report of Electricite de France (EdF) Group, the French electric utility. It comprises 4 parts: introduction (statement of the chairman and chief executive officer, corporate governance, group key figures, sustainable growth indicators - parent company, energy for a sustainable future, EdF group worldwide); dynamics and balanced growth (financial results, EdF's strategy in building a competitive global group: consolidating the European network, moving forward in energy-related services, responding to increasing energy demand in emerging countries); sustainable solutions for all (empowering the customer: competitive solutions for industrial customers, anticipating the needs of residential customers and SMEs, environmental solutions to enhance urban life, upgrading the network and providing access to energy; a sound, sustainable and secure energy mix: a highly competitive nuclear fleet, the vital resource of fossil-fuelled plants, a proactive approach to renewable energies); a global commitment to corporate social responsibility (human resources and partnerships). (J.S.)

EDF - Electricite de France. Results 1997. 1997: The enterprise prepares for competition

International Nuclear Information System (INIS)

1997-01-01

In 1997 the energy production of the French Electricity Company EDF (Electricite de France) reached the value of 457.7 billion kWh, of which 82% is nuclear, 14% hydraulic and 4% classical thermal power. The management of maintenance annual intervention allowed and availability of the nuclear sector of 82.6%. The safety level was also maintained at a high value. The quality of the supplied electricity has been improved continuously: the annual average interruption duration for low voltage supply has been reduced from 1.35 h in 1996 to 1.06 h in 1997. Sale volume in France (369.9 billion kWh) is 0.7% lower than in 1996. EDF remains the first electricity exporter in Europe. The EDF has strengthened in 1997 its international development. FF 4.2 billions have been invested in Europe, Latin America and Asia. A social policy has been developed in favor of employee, particularly, young people acting toward enterprise's development, better management and working time reduction. In the frame of its relation with the state the EDF Company has signed a new contract for the period 1997-2000 which will allow reaching its ambition: becoming a public service of reference in Europe and its promotion as leader in industrial services, in the electric sector of France and on the international market. The results of this first year has confirmed the course adopted. The report contains the following seven chapters: 1. Relations with the state and the evolution of the institutional frame; 2. The financial results and administration; 3. Technical results; 4. Development in France; 5. International development; 6. Social and human resources; 7. Environment

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 fonctionnement et le

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

Group EDF at a glance 2005

International Nuclear Information System (INIS)

2006-05-01

The EDF Group is a leading player in the European energy industry, present in all areas of the electricity value chain, from generation to trading, and increasingly active in the gas chain in Europe. 2005 was a crucial year for EDF: growth in sales and a doubling of net income, the opening of the capital, the stepping up of our strategic development plan focused on Europe, a new public service agreement in France. This document presents the main points of the group activities in 2005: the group profile, the growing of the group, the solid position in France (sales and marketing, production and global warming, the radioactive wastes management and the business), consolidating positions in Europe and the international activities by pursuing a selective strategy. (A.L.B.)

EDF analysis of hydrogen problem on present NPPs

International Nuclear Information System (INIS)

Guieu, S.

1997-01-01

By letter dated March 1995, Electricite de France (EDF) has sent to the French Safety Authority (called DSIN, depending jointly from Industry and Environment Ministries) its position, for Present NPPs, regarding three main topics concerning severe accidents pointed by DSIN: hydrogen problem; high pressure core melt risk; and instrumentation. Concerning 'hydrogen problem', EDF answer is not only a state-of-the art analysis but intend to answer the question of the need (or not) for implementation of countermeasures in Present French NPPs. This position is presently under review by DSIN and its Technical Supports. (author)

Nuclear non-proliferation and security culture within EDF nuclear fleet

International Nuclear Information System (INIS)

Debes, M.

2013-01-01

This document describes the nuclear non-proliferation strategy and the safety culture of EDF. The author lists all the mandatory rules and regulations at international and national levels EDF has to comply with. All these requirements are applied in EDF nuclear facilities through adequate procedures that assure a nuclear material accountancy, a follow-up of any item containing nuclear material in the facility, and internal controls. External independent controls are also performed. The EDF security policy goal is to protect human, material and knowledge assets, and to preserve operational capacity, competitiveness and public confidence, within national regulatory framework and regulation on 'vital importance facilities'. The treatment of events or incident (detection, analysis, lessons drawn, experience feedback) is a tool to progress, along with reporting, internal control process and audits. The security requirements cover the different related domains important to EDF industrial assets: security of employees against assaults; security of data according to their sensibility level; security of the information system and telecom; awareness and training of employees; relations with external suppliers or contractors; business premises; security of staff and projects abroad. For industrial facilities and grids (facilities of 'vital importance'...), the defense in depth principles are applied against the different threat scenarios. Security measures are studied at the design stage in a consistent way with nuclear safety measures, while taking into account the protective means deployed by public authorities. These risk analysis are periodically reassessed. The paper is followed by the slides of the presentation. (A.C.)

EDF decommissioning programme: A global commitment to safety, environment and cost efficiency of nuclear energy

International Nuclear Information System (INIS)

Chatry, Jean-Paul

2002-01-01

Nowadays, decommissioning of nuclear power plants has become a key issue for nuclear industry in Europe. The phasing out of nuclear energy in Germany, Belgium and Sweden, as well as the early closure of nuclear units in applicant countries in the frame of EU enlargement, has largely contributed to consider decommissioning as the next challenge to face. The situation is slightly different in France: nuclear energy is still considered as a safe, cost-effective and environment friendly energy source and EDF is still working on the development of a new generation of reactor to replace the existing one. Nevertheless, to achieve this objective, it will be necessary to get the support of political decision-makers and the acceptance of public opinion. The increasing mobilisation of EDF for the decommissioning of its already shutdown NPPs shows its willingness to demonstrate its capacity to control the nuclear life cycle from end to end. The successful implementation of its decommissioning programme will not mean the end of nuclear energy as an efficient way to generate electricity but it will constitute a prerequisite for the erection of new nuclear power plants in France

EDF - Half-year 2014 results up. Good operating performance. 2014 targets and 2018 vision reiterated

International Nuclear Information System (INIS)

Trivi, Carole; Boissezon, Carine de; Hidra, Kader

2014-01-01

Significant advances for EDF over the last six months, highlighted by: - good results, - higher nuclear output in France and the United Kingdom, - strict financial discipline with costs cut by 1.8% in France, - further strengthening of the Group's financial structure, with an indebtedness ratio of less than 2x. EDF's half-year 2014 results: - EBITDA: euro 9.6 billion, +3.1% or 2.8% in organic terms; - EBITDA excluding Edison: euro 9.2 billion, +5.6% or 5.3% organic growth; - Net income excluding non-recurring items: euro 3.2 billion, +2.8%; - Net income - Group share: euro 3.1 billion, +8.3%; - Nuclear output up: France +1.6 TWh, United Kingdom +2.0 TWh; - Net financial debt/EBITDA: 1.9x vs. 2.1x at 31 December 2013; - Finalization of transaction with Dalkia: On 25 July 2014, EDF and Veolia Environnement announced the finalization of the agreement on their joint subsidiary Dalkia. The deal will provide the Group with new development prospects in the area of energy services, in France and abroad

EDF'S nuclear strategy: new markets and skilled players

International Nuclear Information System (INIS)

Machenaud, H.

2000-01-01

French nuclear power has a bright future ahead, as a major contributor to the limitation of CO 2 emissions in the European Union, and as a cheap way of balancing the electricity supply. Of course, this future could be called into question if public no longer trusted us. This means we need to be stringent on the issues of safety, radiological protection of workers and maintenance. EDF will follow the debate raised by the French government on nuclear energy, through an attitude of openness and constant exchange of view ports, in order to give an objectively elaborated and clear answers to the questions raised by our industrial activities, and their future. EDF wants to answer these questions not only in technical, economic and scientific terms, but also by taking into account people's specific concerns, their expectations and their opinions. Citizens and customers should see a consistency in high standards between our ecological, technological, and commercial activities. It is only on this condition that EDF, and nuclear energy can keep the confidence they have earned in France. (author)

Phasing out nuclear: shock statements by the EDF's CEO

International Nuclear Information System (INIS)

Benezet, E.; Mouchon, F.; Lomazzi, M.; Jeanne, M.

2011-01-01

While costs associated with phasing out nuclear or cancelling of nuclear programs are briefly evoked for different European countries (Belgium, Germany, Italy), the EDF Chairman, Mr Proglio, comments the decisions of these countries, outlines the various risks associated with such a decision in France (job losses, greenhouse gas emissions), also outlines EDF involvement in nuclear safety and evokes the issues of Fessenheim and of the EPR. Some French political aspects on that matter are also evoked

The EDF group and the sustainable development; Le groupe EDF et le developpement durable

Energy Technology Data Exchange (ETDEWEB)

NONE

2001-07-01

This document deals with the management policy of the EDF Group, concerning the sustainable development. The program is presented showing the Group will to contribute to an environmental quality: a control of the activities impact on the environment, the development of the renewable energies, the solidarity and the electric power access development in developing countries. (A.L.B.)

EDF - Electricite de France, 2017 annual Results

International Nuclear Information System (INIS)

2018-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's annual Results for 2017. It is made of several reports: The annual Results press release, The annual Results presentation and its appendices, The financial report, The Consolidated Financial Statements at 31 December 2017, The Statutory Auditors' report, The transcript of the Investors and Analysts conference, The 3rd quarter 2017 results press release, the 3rd quarter 2017 results presentation and its appendices, The transcript of the Investors and Analysts conference, The first quarter 2017 results press release, The first quarter 2017 results presentation with its appendices, The transcript of the Investors and Analysts conference, The 2017 half-year results press release, The 2017 half-year results presentation with its appendices, The 2017 half-year financial report, The Consolidated Financial Statements at 30 June 2017, The 2017 half-year Statutory Auditors' report, The transcript of the Investors and Analysts conference

EDF - Electricite de France, 2012 annual Results

International Nuclear Information System (INIS)

2013-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's annual Results for 2012. It is made of several reports: the Annual Results press release, the 2012 Annual Results presentation and its appendices, the transcript of the Analysts Conference, the Consolidated Financial Statements at 31 December 2012, the Statutory Auditors' report, the Management Report, the 3rd quarter 2012 Sales press release, the 3rd quarter 2012 Sales presentation with its appendices, updated presentation and transcript, the first quarter 2012 Sales press release, the first quarter 2012 Sales updated presentation and regulatory information with its appendices and transcript, The Half-year results press release, the 2012 Half-year results presentation with its appendices, the Consolidated financial statements at 30 June 2012, the Management Report for the first half 2012, the 2012 Half-year Statutory Auditors' reports, the transcript of the Investors and Analysts conference

EDF - Electricite de France, 2014 annual Results

International Nuclear Information System (INIS)

2015-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's annual Results for 2014. It is made of several reports: the Annual Results press release, the 2014 Annual Results presentation and its appendices, the transcript of the Investors and Analysts conference, the Consolidated financial statements at 31 December 2014, the Statutory Auditors' report, the 2014 Management report and Group results, the 2014 financial annual statements, the 3rd quarter 2014 Sales press release, the 3rd quarter 2014 Sales presentation with its appendices and transcript, the first quarter 2014 Sales press release, the first quarter 2014 Sales presentation with its appendices and transcript, the 2014 Half-year Results press release, the 2014 Half-year Results presentation and its appendices, the transcript of the Investors and Analysts conference, the Consolidated Financial Statements at 30 June 2014, the 2014 Half-year Statutory Auditors' report, the Financial Report for the first half 2014

EDF - Electricite de France, 2011 annual Results

International Nuclear Information System (INIS)

2012-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's annual Results for 2011. It is made of several reports: The Annual Results press release, the 2011 Annual Results presentation and its appendices, the Consolidated Financial Statements at 31 December 2011, the Statutory Auditors' report, the Management Report, the first quarter 2011 Sales press release, the first quarter 2011 Sales presentation and its appendices and transcript, the 3rd quarter 2011 Sales press release, the 3rd quarter 2011 Sales presentation and its appendices, transcript, and transcription of the questions and answers, the Half-year results press release, the 2011 Half-year results presentation and its appendices, the transcript of the Investors and Analysts conference, the Consolidated financial statements at 30 June 2011, the Management Report for the first half 2011, the 2011 Half-year Statutory Auditors' report

EDF - Electricite de France, 2013 annual Results

International Nuclear Information System (INIS)

2014-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's annual Results for 2013. It is made of several reports: the Annual Results press release, the 2013 Annual Results presentation and its appendices, the Consolidated Financial Statements at 31 December 2013 and the Statutory Auditors' report, the Management Report, the transcript of the Analysts Conference, the 3rd quarter 2013 Sales press release, the 3rd quarter 2013 Sales presentation with its appendices and transcript, the first quarter 2013 Sales press release, the first quarter 2013 Sales presentation with its appendices and transcript, the 2013 Half-year results press release, the 2013 Half-year results presentation and its appendices, the Consolidated Financial Statements at 30 June 2013, the Management Report for the first half 2013, the 2013 Half-year Statutory Auditors' report, the transcript of the Investors and Analysts conference

Nuclear energy in France. Respective part of CEA, EDF, FRAMATOME

International Nuclear Information System (INIS)

Graf, J.J.

1976-01-01

In France, the three actors on the nuclear stage are CEA, EDF, and industry. The CEA, important organism of research and development, represents the public power, counsels the Government for safety and constitutes the State interference by the indirect mean of budget which is assigned to it. The industry, FRAMATOME, is commissioned to build plants. EDF has vocation to provide electricity at the lower costs [fr

Chooz A: a model for the dismantling of water-cooled reactors

International Nuclear Information System (INIS)

Anon.

2017-01-01

The specificity of Chooz-A, the first French pressurized water reactor (PWR), is that the reactor and its major components (pumps, exchangers and cooling circuits) are installed in 2 caves dug out in a hill slope. Chooz-A was operating from 1967 to 1991, in 1993 the fuel was removed and in 2007 EDF received the authorization to dismantle the reactor. In 2012, EDF completed the dismantling of the cave containing the elements of the cooling circuit, a cornerstone was the removing of the four 14 m high steam generators. The dismantling of the pressure vessel began in march 2017, it is the same tools and the same processes that were used for the dismantling of the pressure vessel of the Zorita plant (Spain) in 2016. The end of the Chooz-A dismantling is expected in 2022. The feedback experience will help to standardize practices for the French fleet of PWRs. (A.C.)

Design and Implementation  of an EDF Scheduer for Fiasco.OC L4

OpenAIRE

Arnelöv, Eric

2016-01-01

This paper describes the implementation of an EDF scheduler for the FIASCO microkernel. Benchmark test shows that the average case gain an improvement of 16-34%, in regards to schedule calls, running EDF over the existing fixed priority scheduler using Rate Monotonic (RM). A possible approach to mimic EDF scheduling with fixed priority is described using dynamic counters and worst case ready queue. The advantages and disadvantages are compared to the Fixed Priority with the Priority Promotion...

Developments in natural uranium - graphite reactors; Developpement des reacteurs a graphite et uranium naturel

Energy Technology Data Exchange (ETDEWEB)

Bourgeois, J. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires; Saitcevsky, B. [Electricite de France (EDF), 75 - Paris (France)

1964-07-01

The French natural uranium-graphite power-reactor programme has been developing - from EDF 1 to EDF 4 - in the direction of an increase of the unit power of the installations, of the specific and volume powers, and of an improvement in the operational security conditions. The high power of EDF 4 (500 MWe) and the integration of the primary circuit into the reactor vessel, which is itself made of pre-stressed concrete, make it possible to make the most of the annular fuel elements already in use in EDF 1, and to arrive thus at a very satisfactory solution. The use of an internally cooled fuel element (an annular element) has led to a further step forward: it now becomes possible to increase the pressure of the cooling gas without danger of causing creep in the uranium tube. The use of a pre-stressed concrete vessel makes this pressure increase possible, and the integration of the primary circuit avoids the risk of a rapid depressurization which would be in this case a major danger. This report deals with the main problems presented by this new type of nuclear power station, and gives the main lines of research and studies now being carried out in France. - Neutronic and thermal research has made it possible to consider using large size fuel elements (internal diameter = 77 mm, external diameter 95 mm) while still using natural uranium. - The problems connected with the production of these elements and with their in pile behaviour are the subject of a large programme, both out of pile and in power reactors (EDF 2) and test reactors (Pegase). - The increase in the size of the element leads to a large lattice pitch (35 to 40 cm). This makes it possible to consider having one charging aperture per channel or for a small number of channels, whether the charge machine be inside or outside the pressure vessel. In conclusion are given the main characteristics of a project for a 500 MWe power station using such a fuel element. In particular this project is compared to EDF 4

EDF steam generators fleet: In-operation monitoring of TSP blockage and tube fouling

Energy Technology Data Exchange (ETDEWEB)

Bertrand, P.; Gay, N.; Crinon, R. [Electricite De France (France)

2012-07-01

EDF operates 58 Pressurized Water Reactors in France. In the mid 2000‟s some of them have been affected by Steam Generators (SG) Tube Support Plates (TSP) blockage and U-tubes external surface fouling with iron oxides deposits due to corrosion of secondary-side components. These issues have been tackled by a global maintenance strategy of chemical cleanings and a method for in-operation monitoring of fouling and TSP blockage has been developed and is implemented since mid 2009. This monitoring is aimed at giving information for SG maintenance planning as regards non destructive examinations and chemical cleaning. This paper will first remind of the physical reasons of fouling and TSP blockage and identify the resulting stakes regarding safety and availability along with the action levers available to control both phenomena. Then details will be given on how in-operation monitoring of fouling and TSP blockage is carried out, using measurements of Wide Range water Level (WRL) and SG steam pressure during thermally stabilized periods. Information will also be given on how those data are analyzed and shared as well at a local as at a corporate level to participate in the planning of SG inspection and maintenance operations. Finally, possible refinements will be discussed, notably regarding the issue of WRL measurements reliability and the possibility to use the analysis of SG dynamic behavior during power transients to assess the TSP blockage ratio. In terms of „issues requiring discussion‟, the following are operational issues currently being investigated by EDF: 1. SG pressure can have quite large variations during one operating cycle (notably after a plant trip) and from one cycle to the other and generally pressure tends to decrease on a long-term basis. How can such variations be explained? What are the solutions to moderate/stop the pressure loss? 2. On some of the SG-models operated by EDF, hard curative Chemical Cleaning of the U-tubes didn't bring

EDF - Electricite de France, 2015 annual Results

International Nuclear Information System (INIS)

2016-01-01

The EDF Group is an integrated energy supplier operating in a wide range of electricity-related businesses: generation, transmission, distribution, sale and trading of energy. It is the main operator in the French electricity market and one of the leading electricity groups in Europe. The EDF Group has built a business model balanced between deregulated and regulated operations in France and an international presence. This document is EDF Group's annual Results for 2015. It is made of several reports: the 2015 Annual Results presentation, the 2015 Management report and Group results, the Consolidated Financial Statements at 31 December 2015, the Statutory Auditors' report, the appendices of the Annual Results presentation, the transcript of the Investors and Analysts conference, the 3rd quarter 2015 Sales press release, the 3rd quarter 2015 Sales presentation and its appendices, the transcript of the Investors and Analysts conference call, the first quarter 2015 Sales press release, the first quarter 2015 Sales presentation and its appendices, the transcript of the Investors and Analysts conference call, the 2015 Half-year results press release, the 2015 Half-year results presentation with its appendices, the transcript of the Investors and Analysts conference, the Financial Report for the first half 2015, the Consolidated Financial Statements at 30 June 2015, the 2015 Half-year Statutory Auditors' report

IRSN-ANCCLI partnership. IRSN-ANCCLI seminar on decennial inspections of 900 MWe reactors - November 2010

International Nuclear Information System (INIS)

Rollinger, Francois; Delalonde, Jean-Claude; Hubert, F.; Paulmaz, X.; Tindillere, M.; Lheureux, Y.; Junker, R.; Sene, M.

2010-11-01

This seminar addressed the commitment of local information commissions (CLI) in the analysis and follow-up of the third decennial inspections of the French 900 MWe nuclear reactors. A first session addressed topics directly related to these inspections. Contributions proposed under the form of Power Point presentations by experts and representatives of the IRSN, EDF and CLIs addressed the following issues: safety re-examination of EDF 900 MWe reactors at the occasion of the third decennial inspection, activities of the IRSN related to skill management in nuclear power stations, implementation of the third decennial inspection of the unit 1 of the Fessenheim nuclear power station, the issue of follow-up by a local information commission after a decennial inspection. A second session addressed topics not related to decennial inspections and were proposed by Gravelines and Dampierre local information commissions: analysis of significant safety events, issues of skill management in nuclear power stations

Serial elongation, derotation and flexion (EDF) casting under general anesthesia and neuromuscular blocking drugs improve outcome in patients with juvenile scoliosis: preliminary results.

Science.gov (United States)

Canavese, Federico; Botnari, Alexei; Dimeglio, Alain; Samba, Antoine; Pereira, Bruno; Gerst, Adeline; Granier, Marie; Rousset, Marie; Dubousset, Jean

2016-02-01

Juvenile scoliosis (JS), among different types of spinal deformity, remains still a challenge for orthopedic surgeons. Elongation, derotation and flexion (EDF) casting technique is a custom-made thoracolumbar cast based on a three-dimensional correction concept. The primary objective of the present study was to measure changes on plain radiographs of patients with JS treated with EDF plaster technique. The second aim was to evaluate the effectiveness of the EDF plaster technique realized under general anesthesia (GA) and neuromuscular blocking drugs, i.e. curare, on the radiological curve correction. A retrospective comparative case series study was performed in which were included forty-four skeletally immature patients. Three patient groups were selected. Group 1: EDF cast applied with patients awaken and no anesthesia; Group 2: EDF cast applied under GA without neuromuscular blocking drugs; Group 3: EDF cast applied under GA with neuromuscular blocking drugs. All the patients were treated with two serial EDF casts by 2 months and a half each. All measurements were taken from the radiographic exams. Cobb's angle; RVAD and Nash and Moe grade of rotation were assessed before and after applying the cast. Thirty-four (77.3 %) patients were followed up at least 24 months after removal of last EDF cast. Eighteen patients (3 males, 15 females) were included in Group 1, 12 (2 males, 10 females) in Group 2 and 14 (5 males, 9 females) in Group 3. Serial EDF casting was more effective at initial curve reduction and in preventing curve progression when applied under GA with neuromuscular blocking drugs, i.e. curare. RVAD and Nash and Moe score improved significantly in all groups of patients treated according to principles of EDF technique. During follow-up period, six patients required surgery in Group 1 (6/18; 33.3 %), 3 patients required surgery in Group 2 (3/12; 25 %) and 2 patients underwent surgery in Group 3 (2/14; 15 %). Preliminary results show EDF casting is

Thermal flux flattering and increase of reactor output

Energy Technology Data Exchange (ETDEWEB)

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

1959-07-01

It is worthwhile, when building power reactors, to have excess reactivity in order to increase rating by fitting closely together the heat sources and the cooling possibilities. The power per unit volume of a graphite reactor can then be increased, given the power of the most heavily loaded channel. The solutions adopted for G.1, G.2, and E.D.F.1 are described here, and also the improvements based on the actual neutron flux flattening, the introduction of several zones for the coolant, the variation of uranium rod and coolant channel diameters according to their location, and finally the change in lattice pitch. The perturbation of neutron flux due to variation of mean absorption in the lattice is also discussed. (author)

Low power modular power generating reactors or Small Modular Reactors (SMR)

International Nuclear Information System (INIS)

Chenais, Jacques

2016-01-01

Electronuclear reactors were small reactors at the beginning, and then tend to be always bigger and more powerful, but since some recent times, several countries specialized in reactor design and fabrication (USA, Russia, China, and South Korea) have been developing Small Modular Reactors (SMR) of less than 300 MW. As France has already produced feasibility studies and is about to launch a SMR development programme, the author comments some specific aspects of this new architecture of reactors, characterises the targeted markets, gives an overview of the various more or less advanced existing concepts: a floating barge in Russia, the SMART 100 MW project in South Korea, several concepts in the USA (the mPower 125 MW, the NuScale 45 MW, the Westinghouse 225 MW, and the HI-SMUR 160 MW projects), the ACP 100 MW in China, the CAREM 27 MW in Argentina. French projects developed by the CEA, EDF, Areva and DCNS are then presented

Performance Evaluation of New Joint EDF-RM Scheduling Algorithm for Real Time Distributed System

Directory of Open Access Journals (Sweden)

Rashmi Sharma

2014-01-01

Full Text Available In Real Time System, the achievement of deadline is the main target of every scheduling algorithm. Earliest Deadline First (EDF, Rate Monotonic (RM, and least Laxity First are some renowned algorithms that work well in their own context. As we know, there is a very common problem Domino's effect in EDF that is generated due to overloading condition (EDF is not working well in overloading situation. Similarly, performance of RM is degraded in underloading condition. We can say that both algorithms are complements of each other. Deadline missing in both events happens because of their utilization bounding strategy. Therefore, in this paper we are proposing a new scheduling algorithm that carries through the drawback of both existing algorithms. Joint EDF-RM scheduling algorithm is implemented in global scheduler that permits task migration mechanism in between processors in the system. In order to check the improved behavior of proposed algorithm we perform simulation. Results are achieved and evaluated in terms of Success Ratio (SR, Average CPU Utilization (ECU, Failure Ratio (FR, and Maximum Tardiness parameters. In the end, the results are compared with the existing (EDF, RM, and D_R_EDF algorithms. It has been shown that the proposed algorithm performs better during overloading condition as well in underloading condition.

The contractual agreement State-EDF signature the 8. april 1997

International Nuclear Information System (INIS)

1998-01-01

The corporation agreement between the State and Electricite De France (EDF) was signed for the period of 1997-2000. With the agreement of the State, this new contract brings to EDF the ways to progress: becoming the reference public utilities in Europe and asserting its authority as an industrial corporation, leader of the electrical service in France and in international markets. The agreement precise the main orientations of the development plan and the economical policy. (A.L.B.)

EDF Energy Holdings Limited, Registered Number 06930266, Annual report and financial statements 31 December 2013

International Nuclear Information System (INIS)

2014-01-01

EDF Energy Holdings Limited and subsidiaries make up EDF Energy. The companies' principal activities are to provide and supply electricity and gas to commercial, residential and industrial customers, and to generate electricity through a portfolio of generation assets including nuclear, coal fired, gas and renewable generation. EDF Energy is also involved in the construction of new build nuclear assets. This document is the annual report and financial statements of the company for the year 2013. Contents: 1 - Strategic report; 2 - Directors' report; 3 - Directors' responsibility statement; 4 - Independent Auditor's report; 5 - Consolidated income statement; 6 - Consolidated statement of comprehensive income; 7 - Consolidated balance sheet; 8 - Consolidated cash flow statement; 9 - Consolidated statement of changes in equity 10 - Notes to the consolidated financial statements; 11 - Company balance sheet; 12 - Notes to the Company financial statements

EDF Energy Holdings Limited, Registered Number 06930266, Annual report and financial statements 31 December 2014

International Nuclear Information System (INIS)

2015-01-01

EDF Energy Holdings Limited and subsidiaries make up EDF Energy. The companies' principal activities are to provide and supply electricity and gas to commercial, residential and industrial customers, and to generate electricity through a portfolio of generation assets including nuclear, coal fired, gas and renewable generation. EDF Energy is also involved in the construction of new build nuclear assets. This document is the annual report and financial statements of the company for the year 2014. Contents: 1 - Strategic report; 2 - Directors' report; 3 - Directors' responsibility statement; 4 - Independent Auditor's report; 5 - Consolidated income statement; 6 - Consolidated statement of comprehensive income; 7 - Consolidated balance sheet; 8 - Consolidated cash flow statement; 9 - Consolidated statement of changes in equity 10 - Notes to the consolidated financial statements; 11 - Company balance sheet; 12 - Notes to the Company financial statements

The de-construction programme for EDF'S first generation power plants

International Nuclear Information System (INIS)

Zask, G.; Corcuff, A.

2003-01-01

Before 2001 EDF had adopted a 'long wait' scenario for the de-construction of nuclear power plants, consisting of waiting for a period of 5 to 10 years for IAEA level 2 (partial release of the site), then postponing the total de-construction of the facility for 25 to 50 years, in order to benefit from the natural decay of the radioactivity and thereby reduce the dosimetry of the personnel and the costs. Today, as regards the 8 power plants of the first generation and Creys-Malville, EDF has decided to undertake the total de-construction over a period of 25 years of all its reactors that have ceased commercial operation. The forecast cost of this programme amounts to Euro 3 billion. It thus intends to demonstrate its capacity to control, within the scale of the human lifespan, the entire life cycle of its nuclear power plants, while minimising the impact on man and the environment. This choice of immediate dismantling for the power plants of the first generation does not prejudge what will be done, when the time comes, for the PWR plants currently in operation. The paper has the following contents: 1. General; 2.The facilities concerned; 3. Chronological sequence adopted for de-construction; 4. Milestones and critical paths; 4.1. Simplification of the administrative procedures; 4.2. The waste channels; 4.3. Industrial organisation; 4.3.1. Creation of Centre d'Ingenierie De-construction et Environnement (CIDEN); 4.3.2. Responsibilities, interfaces and co-ordination of the various departments concerned (Role of owner: Responsibility as nuclear operator; Overall co-ordination; Operational steering of projects); 4.3.3. Internal authorization process; 4.3.4. Obtaining and maintaining skills (Training; Environment; De-construction; Radiological protection, radiology, radioecology; Processing of waste and approval of the cycle); 4.3.5. Monitoring of works and surveillance of service providers; 4.3.6. Radiological protection, environment; 4.3.7. Control of conventional

Environmental monitoring around nuclear power plants of EDF in France

International Nuclear Information System (INIS)

Chretien, V.; Hemidy, P.Y.

2010-01-01

As part of the regulatory environmental monitoring around its nuclear power plants, EDF carries out every year more than 40.000 measurements. In addition EDF performs more precise radioecological surveys on all its sites. This monitoring shows the minor incidence of EDF's nuclear power plants on the environment and a general decrease of gamma emitters radionuclides in the environment. These results confirm the efforts lead by EDF to minimise its impacts on the environment, linked to an efficient waste management and demonstrate the good operating standards of its plants. On a qualitative viewpoint, significant efforts on both metrology and organization have lead to improved measurements capabilities, in order to achieve NF EN ISO/CEI 17025 standard compliance. More recently, a similar approach has been implemented with sampling methods. While today the level achieved in the number and quality of measurement complies with the objectives of the monitoring of the impact of the nuclear power plants on the environment, the results of this monitoring should be presented to the public with more pedagogy to give an adequate answer to their expectations. The new questions that will undoubtedly be raised by the recent availability of this information on the Internet should reinforce this dialogue and should also be the opportunity to improve the quality of our communication. (author)

EDF group - Reference Document, Annual Financial Report 2013

International Nuclear Information System (INIS)

2014-01-01

The EDF Group is an integrated energy utility active in all areas of the electricity market: nuclear, renewable and fossil fuel energy generation, transmission, distribution and marketing, energy efficiency and management services, as well as energy trading. It is the leading player in the French electricity market, and holds strong positions in Europe (UK, Italy, Central and Eastern Europe) that make it one of the world's leading electricity utilities and a renowned player in the gas industry. With a net installed capacity of 140.4 GWe worldwide at 31 December 2013 and global production of 653.9 TWh, the Group ranks among the world's leading energy utilities, with the biggest fleet emitting the least amount of CO 2 per kilowatt-hour generated 2 thanks to the proportion of nuclear, hydropower and other renewable energies in its generation mix. The EDF Group supplies electricity, gas and related services to more than 39.1 million customer accounts 3 worldwide (nearly 28.5 million in France). The Group's activities reflect the choice of a model balanced between France and international markets, spanning competitive and regulated operations and based on upstream-downstream integration. In 2013, the Group recorded consolidated revenue of euros 75.6 billion, operating profit before depreciation and amortisation of euros 16.8 billion and net income excluding non-recurring items of euros 4.1 billion. This document is EDF Group's Reference Document and Annual Financial Report for the year 2013. It contains information about: the Group activities, Organisational charts, Property, plant and equipment, Operating and financial data, Cash flows and capital, Research and development, patents and licenses, Information on trends, Financial outlook, Administrative, management and supervisory bodies and Executive Management, Compensation and benefits, Functioning of administrative and management bodies, Employees - Human Resources, Major Shareholders, Related

Equipping simulators with an advanced thermal hydraulics model EDF's experience

International Nuclear Information System (INIS)

Soldermann, R.; Poizat, F.; Sekri, A.; Faydide, B.; Dumas, J.M.

1997-01-01

The development of an accelerated version of the advanced CATHARe-1 thermal hydraulics code designed for EDF training simulators (CATHARE-SIMU) was successfully completed as early as 1991. Its successful integration as the principal model of the SIPA Post-Accident Simulator meant that its use could be extended to full-scale simulators as part of the renovation of the stock of existing simulators. In order to further extend the field of application to accidents occurring in shutdown states requiring action and to catch up with developments in respect of the CATHARE code, EDF initiated the SCAR Project designed to adapt CATHARE-2 to simulator requirements (acceleration, parallelization of the computation and extension of the simulation range). In other respects, the installation of SIPA on workstations means that the authors can envisage the application of this remarkable training facility to the understanding of thermal hydraulics accident phenomena

Pressurized water reactors: the EPR project

International Nuclear Information System (INIS)

Py, J.P.; Yvon, M.

2007-01-01

EPR (originally 'European pressurized water reactor', and now 'evolutionary power reactor') is a model of reactor initially jointly developed by French and German engineers which fulfills the particular safety specifications of both countries but also the European utility requirements jointly elaborated by the main European power companies under the initiative of Electricite de France (EdF). Today, two EPR-based reactors are under development: one is under construction in Finland and the other, Flamanville 3 (France), received its creation permit decree on April 10, 2007. This article presents, first, the main objectives of the EPR, and then, describes the Flamanville 3 reactor: reactor type and general conditions, core and conditions of operation, primary and secondary circuits with their components, main auxiliary and recovery systems, man-machine interface and instrumentation and control system, confinement and serious accidents, arrangement of buildings. (J.S.)

Civil engineering: EDF needs for concrete modelling

International Nuclear Information System (INIS)

Didry, O.; Gerard, B.; Bui, D.

1997-01-01

Concrete structures which are encountered at EDF, like all civil engineering structures, age. In order to adapt the maintenance conditions of these structures, particularly to extend their service life, and also to prepare constructions of future structures, tools for predicting the behaviour of these structures in their environment should be available. For EDF the technical risks are high and consequently very appropriate R and D actions are required. In this context the Direction des Etudes et Recherches (DER) has developed a methodology for analysing concrete structure behaviour modelling. This approach has several aims: - making a distinction between the problems which refer to the existing models and those which require R and D; - displaying disciplinary links between different problems encountered on EDF structures (non-linear mechanical, chemical - hydraulic - mechanical coupling, etc); - listing of the existing tools and positioning the DER 'Aster' finite element code among them. This document is a state of the art of scientific knowledge intended to shed light on the fields in which one should be involved when there is, on one part a strong requirement on the side of structure operators, and on the other one, the present tools do not allow this requirement to be satisfactorily met. The analysis has been done on 12 scientific subjects: 1) Hydration of concrete at early ages: exothermicity, hardening, autogenous shrinkage; 2) Drying and drying shrinkage; 3) Alkali-silica reaction and bulky stage formation; 4) Long term deterioration by leaching; 5) Ionic diffusion and associated attacks: the chlorides case; 6) Permeability / tightness of concrete; 7) Concretes -nonlinear behaviour and cracking (I): contribution of the plasticity models; 8) Concretes - nonlinear behaviour and cracking (II): contribution of the damage models; 9) Concretes - nonlinear behaviour and cracking (III): the contribution of the probabilistic analysis model; 10) Delayed behaviour of

Common safety approach for future pressurized water reactors in France and Germany

International Nuclear Information System (INIS)

Queniart, D.; Gros, G.

1994-01-01

In France and Germany all major activities related to future pressurized water reactors are now proceeding in a coordinated way among the two countries. This holds for utilities and industry in the development of a joint PWR project, the ''European Pressurized Water Reactor (EPR)'' by Electricite de France (EDF), German utilities, Nuclear Power International (NPI), Framatome and Siemens as well as for the technical safety objectives for future evolutionary reactors on the basis of a common safety approach adopted by the safety authorities of both countries for plants to operate form the beginning of the next century. The proposed paper covers this common development of a safety approach and particular technical safety objectives. (authors). 5 refs. 1 fig

Diagnosis of faults in EDF power plants: From monitoring to diagnosis

International Nuclear Information System (INIS)

Joussellin, A.; Chevalier, R.

1994-01-01

Electricite de France is constantly in search of means to improve safety and availability in its nuclear power plants. To this end, EDF has designed new monitoring systems for the major components of its units: for turbogenerator and inlet valves monitoring, for reactor coolant pumps monitoring, for internal structures monitoring and for loose parts detection. New techniques for signal acquisition and processing for diagnosis are used and all these monitoring systems are designed with the same general concept on monitoring. Simultaneously, a workstation for monitoring and aid in diagnosis (PSAD) is under development. It will integrate every monitoring system and will constitute an indispensable tool for plant personnel, enabling them to diagnose the condition of plant equipment, and providing them with high efficiency and user-friendly tools. The PSAD will have a flexible architecture, guaranteeing optimum distribution of computing power to make it available where it is needed

The nuclear cleanliness: a priority for EDF

International Nuclear Information System (INIS)

1999-01-01

Since autumn 1998 EDF implemented an action plan to improve the nuclear cleanliness on its sites. The first objective is to eliminate the contamination risk, by a better professional training and installation of new detection gantries. (A.L.B.)

Boron analyses in the reactor coolant system of French PWR by acid-base titration ([B]) and ICP-MS (10B atomic %): key to NPP safety

International Nuclear Information System (INIS)

Jouvet, Fabien; Roux, Sylvie; Carabasse, Stephanie; Felgines, Didier

2012-09-01

Boron is widely used by Nuclear Power Plants and especially by EDF Pressurized Water Reactors to ensure the control of the neutron rate in the reactor coolant system and, by this way, the fission reaction. The Boron analysis is thus a major factor of safety which enables operators to guarantee the permanent control of the reactor. Two kinds of analyses carried out by EDF on the Boron species, recently upgraded regarding new method validation standards and developed to enhance the measurement quality by reducing uncertainties, will be discussed in this topic: Acid-Base titration of Boron and Boron isotopic composition by Inductively Coupled Plasma Mass Spectrometer - ICP MS. (authors)

EDF Energy Holdings Limited, Registered Number 06930266, Annual report and financial statements 31 December 2015

International Nuclear Information System (INIS)

2016-01-01

EDF Energy Holdings Limited and subsidiaries make up EDF Energy. The companies' principal activities are to provide and supply electricity and gas to commercial, residential and industrial customers, and to generate electricity through a portfolio of generation assets including nuclear, coal fired, gas and renewable generation. EDF Energy is also involved in the construction of new build nuclear assets. This document is the annual report and financial statements of the company for the year 2015. Contents: 1 - Strategic report; 2 - Directors' report; 3 - Directors' responsibility statement; 4 - Independent Auditor's report; 5 - Consolidated income statement; 6 - Consolidated statement of comprehensive income; 7 - Consolidated balance sheet; 8 - Consolidated cash flow statement; 9 - Consolidated statement of changes in equity 10 - Notes to the consolidated financial statements; 11 - Company balance sheet; 12 - Company statement of changes in equity; 13 - Notes to the Company financial statements

Experience acquired by EDF in implementation of its dismantling programme

Energy Technology Data Exchange (ETDEWEB)

Klaeyle, S.; Dalmas, R.; Davoust, M. [EDF - Centre d' Ingenerie Deconstruction Environnement (CIDEN), 69 - Villeurbanne (France)

2008-07-01

EDF decided in 2001 to implement immediate dismantling of its first generation nuclear plants. Seven years after this decision, the physical progress of the programme is 24% and is due to reach 50 % by 2013. This paper presents the experiences acquired in the fields of organization, project and programme management, purchasing strategies and waste management. Until now, the principal works involve Brennilis (Heavy water), ChoozA (PWR) and Creys Malville (fast breeder reactor). The detailed pre-project concerning the first of the six gas graphite reactors is complete and the call for bids process has been launched. The organization to manage projects, established at the De-construction and Environment Engineering Center (CIDEN), is effective and productive. Estimates of costs and expenses are coherent, which makes the forecasts put together to finance the programme secure. CIDEN has carried out significant engineering work over the last six years, making it possible to apply for the administrative authorizations which have now been obtained or are in the process of being obtained. Technical specifications are prepared at an optimized level of detail according to a contractual policy adapted to the complexity of the operations and the sharing of risk with manufacturers. The ChoozA contractualization process has been launched and the first dismantling work has begun in the nuclear auxiliary part. The main Brennilis contract will be completed in mid- 2008 and dismantling works will restart after renewal of the decree which was cancelled in mid-2007. Treatment of sodium from Creys Malville is about to begin, leading to elimination of the sodium risk by 2013. The very low activity waste (TFA) and low to medium activity waste (FA-MA) removal chains are operational. The intermediate activity/long lived (MA-VL) waste will be stored in a facility which will be brought into operational service in 2012. The graphite storage center is due to open between 2017 and 2019

Shutdown channels and fitted interlocks in atomic reactors; Chaines de securite et verrouillages installes sur les piles atomiques

Energy Technology Data Exchange (ETDEWEB)

Furet, J; Landauer, C [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

1968-07-01

This catalogue consists of tables (one per reactor) giving the following information: number and type of detectors, range of the shutdown channels, nature of the associated electronics, thresholds setting off the alarms, fitted interlocks. These cards have been drawn up with a view to an examination of the reactors safety by the 'Reactor Safety Sub-Commission', they take into account the latest decisions. The reactors involved in this review are: Azur, Cabri, Castor-Pollux, Cesar-Marius-2, Edf-2, EL3, EL4, Eole, G1, G2-G3, Harmonie, Isis, Masurca, Melusine, Minerve, Osiris, Pegase, Peggy, PAT, Rapsodie, SENA, Siloe, Siloette, Triton-Nereide, and Ulysse. (authors) [French] Ce catalogue est compose d'un ensemble de tableaux (a raison de un tableau par pile) donnant les renseignements suivants: nombre et nature des detecteurs, dynamique des chaines, nature de l'electronique associee, seuils provoquant des actions de securite, verrouillages installes. Ces fiches ont ete etablies en vue de l'examen de la securite des piles par la 'Sous-Commission de Surete des Piles', et tiennent compte des decisions de celle-ci. Les reacteurs concernes sont: Azur, Cabri, Cator-Pollux, Cesar-Marius-2, Edf-2, EL3, EL4, Eole, G1, G2-G3, Harmonie, Isis, Masurca, Melusine, Minerve, Osiris, Pegase, Peggy, PAT, Rapsodie, SENA, Siloe, Siloette, Triton-Nereide, et Ulysse. (auteurs)

The Use of Prestressed Concrete Vessels in the French Power Reactor Programme

International Nuclear Information System (INIS)

Conte, F.; Dambrine, C.; Gaussot, D.

1963-01-01

This paper deals with the use of pre-stressed concrete for the G2 and G3 reactors at Marcoule and for the EDF3 reactor now under construction at Chinon. The first two reactors have been operating at power since 1959 and 1960 respectively. Messrs. Conte and Dambrine discuss the problems that arose during construction of the vessels for G2 and G3 and also deal with the experience gained in operation - experience which suggests that they are extremely safe- Work on the EDF3 vessel, begun at Chinon in the second half of 1961, is still under way and should be finished towards the end of 1963. Mr. Gaussot discusses the reasons for choosing this type of vessel, the results of calculations and mock-up tests, and the problems presented by the construction itself. A number of studies have been devoted to the future prospects of prestressed concrete structures for reactors. It would seem that working pressures could be increased, if desired, and, in any case, that dimensions could be considerably enlarged, thus offering the chance of integral-type solutions. (author) [fr

The management of the flow assisted corrosion on the nuclear power plants of the fleet of EDF: a strategy of commitment for the control of the ageing

International Nuclear Information System (INIS)

Trevin, S.; Moutrille, M.P.; Caylar, P.; Delacoux, D.; Gipon, E.; Mellin, N.; Qiu, G.; Alos Ramos, O.; Tarabay, J.; Mansour, C.

2015-01-01

Flow accelerated corrosion (FAC) is very effective for nuclear power plants. This generalized corrosion can lead to the rupture of pipes. EDF has developed during these 20 last years the software called BRT-CICERO for the surveillance of the secondary piping system of its Pressurized Water Reactors (PWRs). This software enables the operator to calculate the FAC wear rates taking into account all the influencing parameters such as: pipe isometrics, chromium content of the steel, chemical conditioning and operating parameters of the secondary circuit (temperature, pressure, etc.). This is a major tool for the operators to organize the maintenance and to plan the inspections. In the framework of the French pressure vessel law issued on March 15. 2000, the software BRT-CICERO has been recognized by the French authority for the FAC surveillance on the secondary pressure piping lines of the EDF 58 nuclear reactors. It takes advantage of the experience feedback of the French fleet and of the improvements. BRT-CICERO is frequently updated. A guideline is associated to BRT-CICERO to define the rules and the domain of use and to take advantage of all its functionalities. (authors)

EDF program for cleaning of PWR high dosimetric NPPs results and perspectives of radiological cleanup engineering

International Nuclear Information System (INIS)

Ider, Samir

2012-09-01

In 2002 EDF's PWRs presented significant disparities in their integrated dose results. In order to treat the PWR with highest dose per shutdown ratio, EDF/DPN (Nuclear Production Division) decided to develop an engineering project for 'PWR high dosimetry cleaning'. A specific financial support and staff resource was allocated to each reactor on this project. On every reactor, equipment is decontaminated using chemical process. The average dose reduction is estimated at 0,5 Man.mSv per reactor treated over the five following years. During the power operation of a nuclear reactor, corrosion products from the primary circuit undergo activation through their circulation in the reactor core. These activated products can be integrated into the oxide layer that builds up during the power operation on the primary piping. Additionally, highly radioactive particles can fall by gravity to the bottom of the reactor vessel. Being highly mobile, these can be dispersed throughout the circuit system by the water movement during the shutdown of the Unit. These particles will become hot spots when trapped in specific features of the primary cooling circuit and its auxiliaries. This contamination of the primary circuit leads to high dosimetry of the personnel during the maintenance of the Unit. To decrease the dose received during the maintenance operations, curative actions must be taken to eliminate hot spots and reduce contamination, as well as preventatives measures to curb future new contamination. For each PWR concerned, the studies begin with a diagnostic of the origins of the contamination, the type of pollution, its form (mobile hot spots, oxide layers) and its location. Many types of measuring equipment are used to make a radiological diagnostic (portable gamma-ray spectroscopy, video cartography, and gamma camera system). Experience and knowledge of the underlying chemistry in decontamination process, leads to a Decontamination Factor (DF) per system for

EDF at a glance 2003; Groupe EDF - organisation et chiffres cles 2003

Energy Technology Data Exchange (ETDEWEB)

NONE

2004-07-01

This document presents the organization and key data of Electricite de France (EdF) group for 2003: business, priorities, values, different branches of the group (continental Europe, western Europe, Mediterranean branch, Africa, Asia-Pacific, Americas, Dalkia energy services, development branch), management, board of directors, market opening in France, human resource strategy, R and D, customers (residential, commercial, business and industrial, local authorities), industrial tool (fossil-fired generation, network management, renewable energy sources), reliability, financial flexibility, sustainable development (role of renewables in generation, CO{sub 2} emissions, radiation protection, nuclear waste, environment, handling fuel poverty, landscape conservation), contacts and affiliates outside France. (J.S.)

Diagnosis of faults in EDF power plants: from monitoring to diagnosis

International Nuclear Information System (INIS)

Joussellin, A.

1994-06-01

Electricite de France is constantly is search of means to improve safety and availability in its nuclear power plants. To this end, EDF has designed new monitoring systems for the major components of its units: for turbogenerator and inlet valves monitoring, for reactor coolant pumps monitoring, for internal structures monitoring and for loose parts detection. New techniques for signal acquisition and processing for diagnosis are used and all these monitoring systems are designed with the same general concept on monitoring. Simultaneously, a workstation for monitoring and aid in diagnosis (PSAD) is under development. It will integrate every monitoring system and will constitute an indispensable tool for plant personnel, enabling them to diagnose the condition of plant equipment, and providing them with high efficiency and user-friendly tools. The PSAD will have a flexible architecture, guaranteeing optimum distribution of computing power to make it available where it is needed. (author). 5 figs., 4 refs

Serial elongation derotation flexion (EDF) casting for patients with infantile and juvenile scoliosis.

Science.gov (United States)

Canavese, Federico; Rousset, Marie; Mansour, Mounira; Samba, Antoine; Dimeglio, Alain

2016-02-01

Infantile and juvenile scoliosis, among different types of spinal deformity, is still a challenge for pediatric orthopedic surgeons. The ideal treatment of infantile and juvenile scoliosis has not yet been identified as both clinicians and surgeons still face multiple challenges, including preservation of the thoracic spine, thoracic cage, lung growth and cardiac function without reducing spinal motion. Elongation, derotation, flexion (EDF) casting technique is a custom-made thoracolumbar cast based on a three dimensional correction concept. This cast offers three-dimensional correction and can control the evolution of the deformity in some cases. Spinal growth can be guided by EDF casting as it can influence the initially curved spine to grow straighter. This article aimed to provide a comprehensive review of how infantile and juvenile scoliosis can affect normal spine and thorax and how these deformities can be treated with serial EDF casting technique. A current literature review is mandatory in order to understand the principles of the serial EDF casting technique and the effectiveness of conservative treatment in young and very young patients.

Causes of death in a cohort of EDF-GDF employees: comparison between occupational medicine and official statistics data

International Nuclear Information System (INIS)

Marchand, J.L.; Imbernon, E.; Goldberg, M.

2003-01-01

Background: In an epidemiological study, medical causes of death may be obtained from different sources. In a study on French gas and electricity company (EDF-GDF) workers, they were obtained front the national INSERM database. Additionally, the causes collected by the EDF-GDF occupational physicians, were available for a subset of 1,330 deaths, which occurred between 1989 and 1994. The data from the two sources were compared with each other, in order to assess whether they were globally equivalent, and the potential impact of their differences on the results of epidemiological analyses. Methods: Concordance rates between causes of death in the INSERM and EDF-GDF physicians databases were calculated according to the International Classification of Diseases (ICD) ninth revision codes and for various causes groups. Causes of death records were also examined in order to clarify the observed divergences. SMRs were computed in order to evaluate the consequences of using each. database in epidemiological analyses. Finally, some SMRs were computed with the two sources and compared with each other. Results: INSERM and EDF-GDF physicians causes belonged to the same causes group in 81 % of cases, but the exact cause was different for- more than half of them. The concordance rate was high for the deaths by AIDS and by cancer, and low for deaths by respiratory system and digestive system diseases. More causes of death were coded as 'unknown' in EDF-GDF physicians data than in INSERM data. The SMRs varied widely depending on whether the INSERM or EDF-GDF physicians causes of death databases were used. Conclusions: Causes of death recorded in the INSERM and EDF-GDF physicians databases are very different. Therefore, using the national mortality rates computed by INSERM with the EDF-GDF physicians causes of death to calculate SMRs is not valid, and it is observed that they may be very different from those computed with INSERM data. In a general way, it should be better to use the

To EDF: PHOEBUS, computer-assisted engineering

International Nuclear Information System (INIS)

Lecocq, P.; Goudal, J.C.; Barache, J.M.; Feingold, D.; Cornon, P.

1986-01-01

EDF has built a modular integrated computer-assisted nuclear engineering (CAE) system called POEBUS. Since 1975, the Organization has been interested in CAE which places computer methods and technology at the disposal of the engineering department. This paper describes the changes and their effect on the techniques in use, working methods and the personnel called on to put them into operation [fr

EDF decommissioning programme: A global commitment to safety, environment and cost efficiency of nuclear energy

International Nuclear Information System (INIS)

Grenouillet, J.-J.

2002-01-01

Nowadays, decommissioning of nuclear power plants has become a key issue for the nuclear industry in Europe. The phasing out of nuclear energy in Germany, Belgium and Sweden, as well as the early closure of nuclear units in applicant countries in the frame of EU enlargement, has largely contributed to consider decommissioning as the next challenge to face. The situation is slightly different in France: Nuclear energy is still considered as a safe, cost-effective and environment friendly energy source and EDF is still working on the development of a new generation of reactors to replace the existing ones. Nevertheless, to achieve this objective, it will be necessary to get the support of political decision-makers and the acceptance of public opinion. (author)

Implementation of ALARA at the design stage of Nuclear Power Plants

Energy Technology Data Exchange (ETDEWEB)

Brissaud, A.; Ridoux, P. [Electricite de France, Villeurbanne (France)

1995-03-01

In the 1970s, Electricite de France (EdF) had limited knowledge and experience of pressurized water reactors (PWRs). Electricity generation by nuclear units was oriented towards gas-graphite reactors, even though EdF had a share in the PWR unit of CHOOZ A-1 (250 MWe, later upgraded to 320 MWe). Some facts about the origin of doses in that king of reactor were known to the research and development (R&D) support staff of EdF, which mainly comprises the French Atomic Commission (CEA), but only a few of EdF`s engineers were aware of these facts. One has to bear in mind that CHOOZ A-1 only went critical in April 1967 and was officially connected to the grid in May 1970 after some important problems had been solved. Meanwhile, the nuclear program was launched at full speed, beginning with the order for FESSENHEIM 1 in 1970, FESSENHEIM 2 and BUGEY 2 and 3 in 1971. TIHANGE 1, in which EdF had a share, went on-line in September 1975. Also, supposing that EdF had had such knowledge and experience, it is quite evident that it would have been very difficult to modify the lay-out inside the reactor building.

EPR (European Pressurized Reactor)

International Nuclear Information System (INIS)

2015-01-01

This document presents the EPR (European Pressurized Reactor), a modernised version of PWRs which uses nuclear fission. It indicates to which category it belongs (third generation). It briefly describes its operation: recalls on nuclear fission, electricity production in a nuclear reactor. It presents and comments its characteristics: power, thermal efficiency, redundant systems for safety control, double protective enclosure, expected lifetime, use of MOX fuel, modular design. It discusses economic stakes (expected higher nuclear electricity competitiveness, but high construction costs), and safety challenges (design characteristics, critics by nuclear safety authorities about the safety data processing system). It presents the main involved actors (Areva, EDF) and competitors in the field of advanced reactors (Rosatom with its VVER 1200, General Electric with its ABWR and its ESBWR, Mitsubishi with its APWR, Westinghouse with its AP100) while outlining the importance of certifications and delays to obtain them. After having evoked key data on EPR fuel consumption, it indicates reactors under construction, evokes potential markets and perspectives

EDF group - Reference Document, Annual Financial Report 2012

International Nuclear Information System (INIS)

2013-01-01

The EDF Group is an integrated energy utility active in all areas of the electricity market: nuclear, renewable and fossil fuel energy generation, transmission, distribution and marketing, energy efficiency and management services, as well as energy trading. It is the leading player in the French electricity market, and holds strong positions in Europe (UK, Italy, Central and Eastern Europe) that make it one of the world's leading electricity utilities and a renowned player in the gas industry. With a net installed capacity of 139.5 GWe worldwide at 31 December 2012 (128.5 GWe in Europe), and global production of 642.6 TWh, the Group ranks among the world's leading energy utilities, with the biggest fleet emitting the least amount of CO 2 per kilowatt-hour generated 3 thanks to the proportion of nuclear, hydropower and other renewable energies in its generation mix. The EDF Group supplies electricity, gas and related services to more than 39.3 million customer accounts 4 worldwide (nearly 28.6 million in France). The Group's activities reflect the choice of a model balanced between France and international markets, spanning competitive and regulated operations and based on upstream-downstream integration. In 2012, the Group recorded consolidated revenue of euros 72.7 billion, operating profit before depreciation and amortisation of euros 16.1 billion and net income excluding non-recurring items of euros 4.2 billion. This document is EDF Group's Reference Document and Annual Financial Report for the year 2012. It contains information about: the Group activities, risk factors, Organisational charts, Property, plant and equipment, Operating and financial data, Cash flows and capital, Research and development, patents and licenses, Information on trends, Financial outlook, Administrative, management and supervisory bodies and Executive Management, Compensation and benefits, Functioning of administrative and management bodies, Employees - Human

Low-level wastes pathways at EDF

International Nuclear Information System (INIS)

Hilmoine, R.; Casseau, L.Ph.

1999-01-01

First, what are, for EDF, the main issues dealing with the future management of low level wastes (LLW) will be recalled; and followed by a description of what are the implications of implementing these management principles: areas zoning, set up of pathways, traceability of the wastes and associated controls. The origin of the wastes will then be described using both qualitative and quantitative approaches; the description will specifically address the spreading of wastes production in time. LLW management at EDF will then be envisaged: storage in a specific discharge, pathways for treatment and elimination of wastes with acceptable radiological impact and costs. The example of LLW oils will be developed: particularly as far as hypothesis and results concerning the radiological impacts are concerned. The choice of incineration will then be justified, however expected difficulties to implement it industrially will be pointed out. Other on going studies and their main results will be mentioned: the present time is a turning point on that issue between thought and action; to be on going dismantling must take into account the emerging principles and give rise to good communication. (author)

Innovative Approaches to Knowledge Management in EDF Energy Generation

International Nuclear Information System (INIS)

Johnson, A.; Robinson, P.; Roberts, A.

2016-01-01

Full text: Organizational learning is a key discipline in the safe, sustainable operation of civil nuclear fleet. In order to have an effective organizational learning culture a free flow of information is required. To facilitate this free flow of information and ideas EDF Energy Nuclear Generation created the concept of the Organizational Learning Portal (OLP). The OLP was created to remove existing barriers to knowledge sharing and allow easy exchange of information and ideas. To transfer existing data from legacy systems onto the OLP required a considerable effort, to ensure that information and knowledge was preserved and available to recall easily for future use. The OLP, was designed using the latest ‘App’ design to promote accessibility, in line with contemporary information portals and applications sites to ensure a positive and intuitive user journey. A key operational use of the OLP is for accelerated learning, after significant events, e.g., reactor Trips or SCRAM. Additional functionality within the OLP allows implementation of video OPEX and cataloguing of information sources. The OLP was recognized in the 2015 Operational and Safety Assessment Readiness Team as a Best Practice. (author

Best Speed Fit EDF Scheduling for Performance Asymmetric Multiprocessors

Directory of Open Access Journals (Sweden)

Peng Wu

2017-01-01

Full Text Available In order to improve the performance of a real-time system, asymmetric multiprocessors have been proposed. The benefits of improved system performance and reduced power consumption from such architectures cannot be fully exploited unless suitable task scheduling and task allocation approaches are implemented at the operating system level. Unfortunately, most of the previous research on scheduling algorithms for performance asymmetric multiprocessors is focused on task priority assignment. They simply assign the highest priority task to the fastest processor. In this paper, we propose BSF-EDF (best speed fit for earliest deadline first for performance asymmetric multiprocessor scheduling. This approach chooses a suitable processor rather than the fastest one, when allocating tasks. With this proposed BSF-EDF scheduling, we also derive an effective schedulability test.

Single-longitudinal-mode BEFL incorporating a Bragg grating written in EDF

Science.gov (United States)

Gao, Ya; Sun, Junqiang; Chen, Guodong; Xie, Heng

2015-06-01

A stable and tunable single-longitudinal-mode (SLM) Brillouin/Erbium fiber laser (BEFL) with narrow linewidth is proposed and experimentally demonstrated. A uniform Bragg grating written in a segment of unpumped Erbium-doped fiber (EDF) is incorporated as an auto-tracking filter to achieve SLM operation. A length of 5 m pumped EDF is used to provide both Brillouin and linear gain in the cavity. The linewidth is measured to be 18 kHz and the lasing peak power fluctuation and wavelength shift are monitored less than 0.027 dB and 2 pm respectively.

EDF: Computing electron number probability distribution functions in real space from molecular wave functions

Science.gov (United States)

Francisco, E.; Pendás, A. Martín; Blanco, M. A.

2008-04-01

Given an N-electron molecule and an exhaustive partition of the real space ( R) into m arbitrary regions Ω,Ω,…,Ω ( ⋃i=1mΩ=R), the edf program computes all the probabilities P(n,n,…,n) of having exactly n electrons in Ω, n electrons in Ω,…, and n electrons ( n+n+⋯+n=N) in Ω. Each Ω may correspond to a single basin (atomic domain) or several such basins (functional group). In the later case, each atomic domain must belong to a single Ω. The program can manage both single- and multi-determinant wave functions which are read in from an aimpac-like wave function description ( .wfn) file (T.A. Keith et al., The AIMPAC95 programs, http://www.chemistry.mcmaster.ca/aimpac, 1995). For multi-determinantal wave functions a generalization of the original .wfn file has been introduced. The new format is completely backwards compatible, adding to the previous structure a description of the configuration interaction (CI) coefficients and the determinants of correlated wave functions. Besides the .wfn file, edf only needs the overlap integrals over all the atomic domains between the molecular orbitals (MO). After the P(n,n,…,n) probabilities are computed, edf obtains from them several magnitudes relevant to chemical bonding theory, such as average electronic populations and localization/delocalization indices. Regarding spin, edf may be used in two ways: with or without a splitting of the P(n,n,…,n) probabilities into α and β spin components. Program summaryProgram title: edf Catalogue identifier: AEAJ_v1_0 Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEAJ_v1_0.html Program obtainable from: CPC Program Library, Queen's University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 5387 No. of bytes in distributed program, including test data, etc.: 52 381 Distribution format: tar.gz Programming language: Fortran 77 Computer

Chooz A, First Pressurized Water Reactor to be Dismantled in France - 13445

Energy Technology Data Exchange (ETDEWEB)

Boucau, Joseph [Westinghouse Electric Company, 43 rue de l' Industrie, Nivelles (Belgium); Mirabella, C. [Westinghouse Electric France, Orsay (France); Nilsson, Lennart [Westinghouse Electric Sweden, Vaesteraas (Sweden); Kreitman, Paul J. [Westinghouse Electric Company, Lake Bluff, IL 60048 (United States); Obert, Estelle [EDF - DPI - CIDEN, Lyon (France)

2013-07-01

Nine commercial nuclear power plants have been permanently shut down in France to date, of which the Chooz A plant underwent an extensive decommissioning and dismantling program. Chooz Nuclear Power Station is located in the municipality of Chooz, Ardennes region, in the northeast part of France. Chooz B1 and B2 are 1,500 megawatt electric (MWe) pressurized water reactors (PWRs) currently in operation. Chooz A, a 305 MWe PWR implanted in two caves within a hill, began operations in 1967 and closed in 1991, and will now become the first PWR in France to be fully dismantled. EDF CIDEN (Engineering Center for Dismantling and Environment) has awarded Westinghouse a contract for the dismantling of its Chooz A reactor vessel (RV). The project began in January 2010. Westinghouse is leading the project in a consortium with Nuvia France. The project scope includes overall project management, conditioning of the reactor vessel (RV) head, RV and RV internals segmentation, reactor nozzle cutting for lifting the RV out of the pit and seal it afterwards, dismantling of the RV thermal insulation, ALARA (As Low As Reasonably Achievable) forecast to ensure acceptable doses for the personnel, complementary vacuum cleaner to catch the chips during the segmentation work, needs and facilities, waste characterization and packaging, civil work modifications, licensing documentation. The RV and RV internals will be segmented based on the mechanical cutting technology that Westinghouse applied successfully for more than 13 years. The segmentation activities cover the cutting and packaging plan, tooling design and qualification, personnel training and site implementation. Since Chooz A is located inside two caves, the project will involve waste transportation from the reactor cave through long galleries to the waste buffer area. The project will end after the entire dismantling work is completed, and the waste storage is outside the caves and ready to be shipped either to the ANDRA (French

The Use of Prestressed Concrete Vessels in the French Power Reactor Programme; Les caissons en beton precontraint dans le programme francais des reacteurs de puissance; Korpusy iz predvaritel'no napryazhennogo betona vo frantsuzskoj programme ehnergeticheskikh reaktorov; Empleo de recipientes de presion de hormigon pretensado en el programa frances de reactores de potencia

Energy Technology Data Exchange (ETDEWEB)

Conte, F. [Centre d' Etudes Nucleaires de Marcoule (France); Dambrine, C. [Centre d' Etudes Nucleaires de Fontenay-aux-Roses (France); Gaussot, D. [Electricite de France, Clamart (France)

1963-10-15

This paper deals with the use of pre-stressed concrete for the G2 and G3 reactors at Marcoule and for the EDF3 reactor now under construction at Chinon. The first two reactors have been operating at power since 1959 and 1960 respectively. Messrs. Conte and Dambrine discuss the problems that arose during construction of the vessels for G2 and G3 and also deal with the experience gained in operation - experience which suggests that they are extremely safe- Work on the EDF3 vessel, begun at Chinon in the second half of 1961, is still under way and should be finished towards the end of 1963. Mr. Gaussot discusses the reasons for choosing this type of vessel, the results of calculations and mock-up tests, and the problems presented by the construction itself. A number of studies have been devoted to the future prospects of prestressed concrete structures for reactors. It would seem that working pressures could be increased, if desired, and, in any case, that dimensions could be considerably enlarged, thus offering the chance of integral-type solutions. (author) [French] La communication traite de l'application du beton precontraint aux reacteurs G2 et G3 de Marcoule et au reacteur EDF 3, en construction a Chinon. Les reacteurs sont en puissance depuis respectivement 1959 et I960; le CEA indique les problemes qui se sont poses pendant la construction du caisson du reacteur, et la lecon tiree des observations faites en service, qui tend a demontrer la tres grande securite de ces appareils. La construction du caisson de EDF3 a commence a Chinon dans la deuxieme partie de 1961; elle est en cours actuellement et sera terminee vers la fin de 1963. L'EDF presente les raisons du choix de ce caisson, les resultats des calculs et des essais sur maquette ainsi que les problemes poses par la construction. Diverses etudes ont ete faites sur les perspectives futures des ouvrages en beton precontraint pour reacteurs. Il semble que l 'on puisse realiser, si on le desire, une elevation

Twenty years of providing information on nuclear power. The experience of EDF

International Nuclear Information System (INIS)

Durr, M.; Ansel, P.; Chaussade, J.P.; Haller, P.; Hezard, L.; Hue, L.

1995-01-01

In France, the anti-nuclear protest movement became a real problem after 1968, as new sites were sought. Initially, information on nuclear power involved communication by the entities responsible for building the plants. Once Government officials and politicians overcame their initial hesitation, their support, which underscores the continuity of France's energy policy, came to play a major role in the public acceptance of nuclear power. Electricite de France (EDF) then had to master the art of informing and communicating with the public. The change in the parliamentary majority in 1981 did not call into question the nuclear programme, and new plants were commissioned with relative ease. The situation changed dramatically with the Chernobyl disaster. It therefore became vital to establish an efficient structure for crisis communications, and transparency became crucial. The focus shifted from launching new plants to operating existing facilities and restoring public confidence. While not neglecting the general public, the emphasis was on certain strategic segments of the population, notably teachers and health care professionals. Advertising campaigns are today aimed at certain segments of the public, whose opinion could well shift in favour of nuclear power. Lastly, EDF, as power plant operator, has to realize the importance of providing information on nuclear waste. Starting from a strategic policy of informing politicians and senior decision makers, in 1974 EDF began to focus on providing information that would 'educate' the public. This information was issued via technicians who had no specific training in communications techniques. In addition to the need to explain and justify its projects, EDF had to adopt a policy of transparency, and to dispense with the esoteric language of specialists and their preference for secrecy. After Chernobyl, EDF's managers made communications with the 'outside world' an integral part of their jobs. Nuclear information became a

The EDF catalogue of technical specifications (reference HN), standardization center; Catalogue des specifications techniques EDF (reference HN) centre de normalisation

Energy Technology Data Exchange (ETDEWEB)

NONE

1996-12-31

A list of EDF technical specifications, valid at the 01/01/1996 date, is presented. Specifications domains such as electrical installations, equipment and materials, uninsulated and insulated conductors, measurement, control and command, electric power generating or transforming equipment, electrical appliances, telecommunications, electronic and computer systems, are covered

EdF let Germans manage Stredoslovenska Energetika

International Nuclear Information System (INIS)

Janoska, J.

2003-01-01

According to provisions of privatisation and shareholders agreement Stredoslovenska energetika (SSE), a.s., Zilina should be managed by the largest European power concern Electricite de France (EdF). But so far, one year after the acquisition, the only French member of the Supervisory board is its Chairman Patrick Luccioni. The Board has 5 members and two of them are German - Peter Weis and Martin Konerman. The latter joined in September this year. He came to Slovakia after years spent in Boards of Hungarian distribution companies - Elmu in Budapest and Emasz in Miskolcz. The name of Peter Weis still can be found on the web page of Emasz on the list of members of Supervisory Board. Strategic partner in both the mentioned Hungarian distribution companies is the third largest player on the German energy market - Energie Baden-Wurttemberg (EnBW). The French concern with its 35-percent stake is the biggest individual shareholder of the EnBW. EdF is reassessing its international projects. Due to an investment embargo the French will not be among the prospects interested in acquisition of Slovenske elektrarne, a.s., Bratislava but the company management has also announced its intention to sell its minority stakes in northern and eastern Europe. The Paris head office of EdF announced its decision in the time when privatisation of Slovak distribution companies was culminating. And so in order to maintain its influence the 49-percent stake in SSE together with management control over the company will be transferred to EnBW. Spokeswoman of EnBW, Petra Wollmer did not say the company would not plan any acquisitions in area of its core business but stressed that these would have to be thoroughly examined. She did not wish to comment on any potential plans the company may have in Slovakia or that would relate to changes in the management bodies of SSE. Not even the Head of Communication Department of the Slovak distribution company, Pavel Muller was allowed to publish any

Safety approach and R and D program for future french sodium-cooled fast reactors

International Nuclear Information System (INIS)

Beils, Stephane; Carluec, Bernard; Devictor, Nicolas; Fiorini, Gian Luigi; Sauvage, Jean Francois

2011-01-01

This paper presents briefly the safety approach as well as the R and D program that is underway to support the deployment of future French Sodium-Cooled fast Reactors (SFRs): A) Safety objectives and principles for future reactors. The content of the first section reflects the works of AREVA, CEA, and EDF concerning the safety orientations for the future reactors. The availability of such orientations and requirements for the SFRs has to allow introducing and managing the process that will lead to the detailed definition of the safety approach, to the selection of the corresponding safety options, and to the identification and motivation of the supporting R and D. B) Strategy and roadmap in support of the R and D for future SFRs. This section describes the R and D program led jointly by CEA, EDF, and AREVA, which has been developed with the objectives to be able to preliminarily define, by 2012, the safety orientations for the future SFRs, and to deduce from them the characteristics of the ASTRID prototype. (author)

Fusion special: E.ON/Ruhrgas, EDF/Gaz de France? Trends. Interview. Inquiry. Portrait

International Nuclear Information System (INIS)

Schneid, O.; Carbier, M.Ch.

2003-01-01

This issue of 'Energies news' newsletter comprises 6 articles dealing with: the E.ON/Ruhrgas fusion and the birth of a leader of the gas-electric power convergence in Europe (the serial story of the fusion, the compromise with the adverse parties); the key economical data of RWE; the proposal of fusion between EdF (Electricite de France) and Gaz de France (interview of M. Boiteux, honorary president of EdF); the reorganization of RWE activities in France (interview of R. Felgentreff, head of RWE Solutions France); travel inside the French power market (part.2: opening of the power market to all professionals); portrait of J. Masdeu-Arus, co-president of a study group at the French house of commons, who made a report about the economical and financial situation of EdF. (J.S.)

Opinion on the demonstration of the 900 MWe reactor vessels in-service behaviour after their third decennial inspection

International Nuclear Information System (INIS)

2010-01-01

In this report, an expert group comments and assesses how sufficient are the demonstration and the actions performed by EDF to justify the in-service behaviour of nuclear reactor vessels. More precisely, it comments and discusses the different steps of the EDF demonstration: follow-up of the fluence received by the vessels, identification of the most severe transients and thermodynamic calculations, behaviour of irradiated materials, mechanical analysis, in-service control and follow-up plan, ageing management. Recommendations are then formulated

Astrid (fast breeder nuclear reactor)

International Nuclear Information System (INIS)

2014-01-01

This document presents ASTRID (Advanced Sodium Technological Reactor for Industrial Demonstration), a French project of sodium-cooled fast breeder reactor, fourth generation reactor which should be fuelled by uranium 238 rather than uranium 235, and should therefore need less extracted natural uranium to produce electricity. The operation principle of fast breeder reactors is described. They notably directly consume plutonium, allow an easier radioactive waste management as they transform long life radioactive elements into shorter life elements by transmutation. The regeneration process is briefly described, and the various operation modes are evoked (iso-generator, sub-generator, and breeder). Some peculiarities of sodium-cooled reactors are outlined. The Astrid operation principle is described, its main design innovations outlined. Various challenges are discussed regarding safety of supply and waste processing, and the safety of future reactors. Major actors are indicated: CEA, Areva, EDF, SEIV Alcen, Toshiba, Rolls Royce, and Comex. Some key data are indicated: expected lifetime, expected availability rate, cost. The projected site is Marcoule and fast breeder reactors operated or under construction in the world are indicated. The document also proposes an overview of the background and evolution of reactors of 4. generation

EDF Group - Annual Report 2007. European leader for tomorrow's energies

International Nuclear Information System (INIS)

2008-01-01

The EDF Group is a leading player in the European energy industry, active in all areas of the electricity value chain, from generation to trading and network management. The leader in the French electricity market, the Group also has solid positions in the United Kingdom, Germany and Italy, with a portfolio of 38.5 million European customers and a generation fleet which is unique in the world. It intends to play a major role in the global revival of nuclear and is increasingly active in the gas chain. The Group has a sound business model, evenly balanced between regulated and deregulated activities. Given its R and D capability, its track record and expertise in nuclear, fossil-fired and hydro generation and in renewable energies, together with its energy eco-efficiency offers, EDF is well placed to deliver competitive solutions to reconcile sustainable economic growth and climate preservation. This document is EDF Group's annual report for the year 2007. It contains information about Group profile, governance, business, development strategy, sales and marketing, positions in Europe and international activities. The document is made of several reports: the Activity and Sustainable Development Report, the Financial Report, the Sustainable Development Report, the Sustainable Development Indicators, and the Report by the Chairman of EDF Board of Directors on corporate governance and internal control procedures

New EDF approach to the mentification of NPP personnel training needs

International Nuclear Information System (INIS)

Hazet, Jean-Christophe

2003-01-01

The EDF ambition today is to be among the best electricity producers in the world. To do so, we have to take more responsibilities, to motivate and to give our employees a better level of competence, and to make them more involved in the culture and the success of our company. In order to reach these objectives a deeper analysis of the NPP training needs must be completed. Our answer, named 'Local Competencies Development System' (LCDS) consists in implementing a large decentralisation of the competencies management, done by the EDF Production Department in conjunction with the EDF Training Department. It takes place in a logical approach bound up with the historical development of our nuclear program. In addition to this LCDS a new organization of training centers instructors, in dedicated training teams, has been implemented in order to co-ordinate the different actions directly with the NPP. The purpose of this presentation is to take into account the LCDS on the operation personnel training side, a similar organization has been implemented for the maintenance side

Five offshore wind farms by EDF, GDF Suez and Iberdrola. France; Vijf offshore windparken door EDF, GDF Suez en Iberdrola. Frankrijk

Energy Technology Data Exchange (ETDEWEB)

Polo-Leemreis, J. [TWA Netwerk, Paris (France)

2012-02-15

Five offshore wind farms are planned to be built off the Northwest coast of France. On 11 January 2012, three international consortia, led by the French businesses EDF EN (Energie Nouvelles), GDF Suez and the Spanish business Iberdrola, submitted their project proposals to this end. The French government highly values the contribution that offshore wind farms can make to the development of a new industrial sector. This would bring highly needed benefits to the French economy [Dutch] Voor de Noordwest-kust van Frankrijk moeten vijf offshore windparken komen. Op 11 januari 2012 hebben drie internationale consortia onder leiding van de Franse bedrijven EDF EN (Energies Nouvelles), GDF Suez en het Spaanse Iberdrola hun projectvoorstellen hiervoor ingediend. De Franse regering hecht veel waarde aan de bijdrage die offshore windparken kunnen leveren aan de ontwikkeling van een nieuwe industriele sector. De Franse economie zou dit goed kunnen gebruiken.

Mortal waiting for EdF and Gaz de France

International Nuclear Information System (INIS)

Jemain, A.

2003-01-01

Electricite de France (EdF) and Gaz de France (GdF) utilities have announced important investment programs for the forthcoming opening of gas and electricity markets to 2.5 millions of professionals by July 1, 2004. However, nothing can be done before the approval of the French government has been given for the change of their statuses (from the industrial and commercial public company status to the anonymous company status) and for the opening of their capital. Short paper. (J.S.)

Description of the EDF research and development laboratory's radiographic picture processing system

International Nuclear Information System (INIS)

Brillault, B.

1985-01-01

A digital radiographic picture processing system has been developed at the EDF Research and Development Laboratory to be supplied to EDF radiography experts. We describe it in pointing out the difficulties of radiograph digitization but also the numerous processing possibilities. The final goal of the Laboratory work is to extract the information from industrial radiographs by digital means. Our study is divided into three parts: digitization by a microdensitometer; display, processing and quantization of flaws; and, digital storing. 5 refs

Digital publication of EDF's regulatory files

International Nuclear Information System (INIS)

Picard, Pauline

2012-06-01

The Engineering Centre of Deconstruction and Environment wants to modernize the distribution of its regulatory filings in digital form. This project requires a prior upstream of its implementation to determine the best publishing solution suited to the constraints of diffusion and heritage protection of EDF

The EDF group and the sustainable development

International Nuclear Information System (INIS)

2001-01-01

This document deals with the management policy of the EDF Group, concerning the sustainable development. The program is presented showing the Group will to contribute to an environmental quality: a control of the activities impact on the environment, the development of the renewable energies, the solidarity and the electric power access development in developing countries. (A.L.B.)

Main prospects of EDF's nuclear program

International Nuclear Information System (INIS)

Pierre Bacher, M.; Jean Pierrard, M.

1994-01-01

Today, EDF is at a half way point in its third major standardized series, the N4 1400 MW series. The main objective agreed upon for this N4 series, was to improve the insertion of man in the control loop. After the TMI accident in 1979, selective improvements had already been introduced in the 900 series ; the 1300 series, which was the underway, was also the object of more significant improvements (for instance a digital control system) ; but it still seemed desirable that all the lessons to be learned from the accident be reflected in the third series : the fully computerized instrumentation and control system developed for the N4 series ?comparable to the one developed for Airbus ?is today the first of its kind in the world. The demand increase for electric energy dramatically stopped in 1993. However, the prospect for the coming years is more optimistic. Electricity consumption is expected to increase slowly by an average 2% per year. In this context, EDF is preparing its energy program for the nest century and takes into account that hydraulic generation capacity will remain stable and that the French thermal units fueled with coal are rather old and will have to be replaced.

Mechanical behaviour of the reactor vessel support of a pressurized water reactor: tests and analysis

International Nuclear Information System (INIS)

Bolvin, M.; L'huby, Y.; Quillico, J.J.; Humbert, J.M.; Thomas, J.P.; Hugenschmitt, R.

1985-08-01

The PWR reactor vessel is supported by a steel ring laying on the reactor pit. This support has to ensure a good behaviour of the vessel in the event of accidental conditions (earthquake and pipe rupture). A new evolution of the evaluation methods of the applied forces has shown a significant increase in the design loads used until now. In order to take into account these new forces, we carried out a test on a representative mock-up of the vessel support (scale 1/6). This test was performed by CEA, EDF and FRAMATOME. Several static equivalent forces were applied on the experimental mock-up. Displacements and strains were simultaneously recorded. The results of the test have enabled to justify the design of the pit and the ring, to show up a wide safety margin until the collapse of the structures and to check our hypothesis about the transmission of the forces between the ring and the pit

Project accent: graphite irradiated creep in a materials test reactor

International Nuclear Information System (INIS)

Brooking, M.

2014-01-01

Atkins manages a pioneering programme of irradiation experiments for EDF Energy. One of these projects is Project ACCENT, designed to obtain evidence of a beneficial physical property of the graphite, which may extend the life of the Advanced Gas-cooled Reactors (AGRs). The project team combines the in-house experience of EDF Energy with two supplier organisations (providing the material test reactors and testing facilities) and supporting consultancies (Atkins and an independent technical expert). This paper describes: - Brief summary of the Project; - Discussion of the challenges faced by the Project; and - Conclusion elaborating on the aims of the Project. These challenging experiments use bespoke technology and both un-irradiated (virgin) and irradiated AGR graphite. The results will help to better understand graphite irradiation-induced creep (or stress modified dimensional change) properties and therefore more accurately determine lifetime and safe operating envelopes of the AGRs. The first round of irradiation has been completed, with a second round about to commence. This is a key step to realising the full lifetime ambition for AGRs, demonstrating the relaxation of stresses within the graphite bricks. (authors)

EDF's international strategy. The 2009-2013 period - Updating for 2014

International Nuclear Information System (INIS)

2015-11-01

The French Court of Auditors reports the examination of the international strategy of the EDF group and of its mother company. It examines international activities undertaken by EDF out of France through its foreign subsidiary companies and joint ventures during the 2009-2013 period. After a description of the current EDF's international dimension, a recall of its international development between 1993 and 2008, a description of its situation in 2009 and of its recent developments (in 2014-2015), this report first addresses the main international operations undertaken by EDF between 2009 and 2013: acquisitions and cessions, withdrawal from the USA, strengthened positions in Italy and in the UK, China as an important development target, and modest investments in new energies and services. The second part analyses the contrasted financial results of this strategy: a reduced footprint of international activities on cash management and investments, and a negative impact of recurrent losses by some international activities. The third part shows that current requirements had more influence on the international strategy than anticipations on the medium and long terms: insufficient improvement of strategic governance, justifications to the strong presence abroad which are to be more deeply expressed, and a financial constraint on abroad manoeuvre margin. It outlines that expectations expressed by the French State and other shareholders did not have a real impact, and that the geography of target markets still need to be better justified

Environmental monitoring around nuclear power plants of EDF in France; La surveillance de l'environnement autour des centres nucleaires de production d'electricite d'EDF en France

Energy Technology Data Exchange (ETDEWEB)

Chretien, V.; Hemidy, P.Y. [Electricite de France (EDF/DPN), 93 - Saint-Denis (France)

2010-06-15

As part of the regulatory environmental monitoring around its nuclear power plants, EDF carries out every year more than 40.000 measurements. In addition EDF performs more precise radioecological surveys on all its sites. This monitoring shows the minor incidence of EDF's nuclear power plants on the environment and a general decrease of gamma emitters radionuclides in the environment. These results confirm the efforts lead by EDF to minimise its impacts on the environment, linked to an efficient waste management and demonstrate the good operating standards of its plants. On a qualitative viewpoint, significant efforts on both metrology and organization have lead to improved measurements capabilities, in order to achieve NF EN ISO/CEI 17025 standard compliance. More recently, a similar approach has been implemented with sampling methods. While today the level achieved in the number and quality of measurement complies with the objectives of the monitoring of the impact of the nuclear power plants on the environment, the results of this monitoring should be presented to the public with more pedagogy to give an adequate answer to their expectations. The new questions that will undoubtedly be raised by the recent availability of this information on the Internet should reinforce this dialogue and should also be the opportunity to improve the quality of our communication. (author)

EDF group - Reference Document, Annual Financial Report 2016

International Nuclear Information System (INIS)

2017-01-01

The EDF group is an integrated energy company, active in all electricity businesses: nuclear, renewable and thermal generation, transmission (activity handled by RTE, share-holding consolidated resorting to the equity method), distribution (handled by Enedis), sales and marketing, efficiency and energy services and energy trading. It is the leading player in the French electricity market and holds strong positions in Europe (mainly in the United Kingdom (UK), Italy and Belgium), which makes it one of the world's leading electric energy companies and a renowned gas player. With a global installed net generation capacity of 132.3 GWe 2 as at 31 December 2016, generating 583.9 TWh, the Group has one of the largest generation fleets in the world. Among the ten largest global power suppliers, it produces the smallest amount of CO 2 per kilowatt-hour generated 3 thanks to the share of nuclear, hydro and other renewable energies in its generation mix. The EDF group supplies electricity, gas and related services to 37.1 million customer accounts 4 worldwide (of which 26.2 million in France). Electricity generation is a non-regulated activity, which is open to competition in the same way as the sale of electricity and gas and upstream/downstream optimisation. The Group is thus implementing an integrated model for the joint operational management of its portfolio of assets upstream (generation and procurement of energy and fuels) and downstream (wholesale and retail) to guarantee supply of energy to its customers through the best possible management of operational and market risks and with a view to maximising gross margin. In addition, the Group is also present in regulated sectors such as electricity transmission and distribution, in particular via RTE and Enedis, respectively, which are fully independent subsidiaries as for the purposes of the Energy Code. This document is EDF Group's Reference Document and Annual Financial Report for the year 2016. It contains

Ability to burn plutonium and minor actinides. Interest of accelerator driven system compared to critical reactor

International Nuclear Information System (INIS)

Vergnes, J.; Mouney, H.

1998-01-01

In the frame of the French Act of December 1991, EDF is presently assessing the interest of Acceleration Driven System (ADS) for the Transmutation of the Plutonium and Minor Actinides (MA) produced by its park of nuclear reactors. The studies presented here assess the efficiency of ADS and critical reactors to incinerate Pu and MA (Minor Actinides) and the potential interest of ADS for that purpose. (author)

Synthesis of the IRSN report related to severe accidents and to the probabilistic level-2 safety study for the Flamanville EPR reactor. Referral of the Permanent Group of Experts for nuclear reactors (GPR), examination of probabilistic level-2 safety studies (EPS 2) and severe accidents (AG) of the Flamanville reactor nr 3. Opinion related to severe accidents and to the probabilistic level-2 safety study for the Flamanville EPR reactor (FA3). Electronuclear reactors - EDF - Flamanville 3 EPR reactor. Severe accidents and probabilistic level 2 studies

International Nuclear Information System (INIS)

2015-01-01

This document gathers several documents. The first one recalls the main arrangements implemented on the FA3 EPR reactor regarding accidents with core fusion, reports the analysis made by the IRSN about the sizing of these arrangements to reach a controlled status of the installation after a severe accident, regarding the probabilistic level-2 safety assessment, regarding the radiological impact of a severe accident on the population and on the environment, regarding those aimed at facing a total and long duration loss of electric power sources and cold sources, and about the situation of the reactor with respect to WENRA positions on severe accidents for new reactors. The second document is a letter sent by the ASN to the Permanent Group of Experts for nuclear reactors (GPR) to address probabilistic level-2 safety studies (EPS2) and severe accidents for the Flamanville 3 reactor. The third one reports the opinion of the GPR on these both issues and proposes a set of recommendations. The next document is a letter sent by the ASN to the Flamanville 3 project manager at EDF which recalls the related objectives, the ASN opinion on the implemented arrangements for severe accidents (de-pressurization of the primary circuit, management of hydrogen-related risks, corium recovery and cooling outside the vessel, limitation of vapour explosion risks outside the vessel, heat evacuation system, containment enclosure, management of the risk of a return to criticality), to face a total and long duration loss of electricity sources and cold sources, and other aspects addressed in the IRSN analysis. Requests and remarks formulated by the ASN are provided in an appendix to this last document

Hydrogen production by high temperature electrolysis of water vapour and nuclear reactors

International Nuclear Information System (INIS)

Jean-Pierre Py; Alain Capitaine

2006-01-01

This paper presents hydrogen production by a nuclear reactor (High Temperature Reactor, HTR or Pressurized Water Reactor, PWR) coupled to a High Temperature Electrolyser (HTE) plant. With respect to the coupling of a HTR with a HTE plant, EDF and AREVA NP had previously selected a combined cycle HTR scheme to convert the reactor heat into electricity. In that case, the steam required for the electrolyser plant is provided either directly from the steam turbine cycle or from a heat exchanger connected with such cycle. Hydrogen efficiency production is valued using high temperature electrolysis. Electrolysis production of hydrogen can be performed with significantly higher thermal efficiencies by operating in the steam phase than in the water phase. The electrolysis performance is assessed with solid oxide and solid proton electrolysis cells. The efficiency from the three operating conditions (endo-thermal, auto-thermal and thermo-neutral) of a high temperature electrolysis process is evaluated. The technical difficulties to use the gases enthalpy to heat the water are analyzed, taking into account efficiency and technological challenges. EDF and AREVA NP have performed an analysis to select an optimized process giving consideration to plant efficiency, plant operation, investment and production costs. The paper provides pathways and identifies R and D actions to reach hydrogen production costs competitive with those of other hydrogen production processes. (authors)

EDF - The Inspector General's report on Nuclear Safety and Radiation Protection 2009

International Nuclear Information System (INIS)

2010-01-01

After a first chapter in which the Inspector General states his own vision of facts and results regarding nuclear safety and radiation protection for 2009, the relationship with the ASN (Nuclear safety authority), and also gives his own impression on the whole EDF nuclear system, the next chapters more particularly address the following topics: safety management, radiation protection of interveners, abilities and education for new challenges, the exploitation quality, the implementation of new regulatory arrangements, the extension of exploitation duration, the EPR project, the doctors as actors of safety management, service providing or subcontracting companies and fleet performance, prevention and struggle against fire, the activity of British Energy which is part of the EDF group, events which occurred within the EDF group (exposure of an intervener, incidents involving fuel components, biases in work monitoring, a fire on a turbo generator, an incident in Dungeness), lessons drawn from other industrial events (in a Russian hydroelectric station and in a refinery in Texas), and visits in China and in Japan

EDF's viewpoint

International Nuclear Information System (INIS)

Serviere, G.

2009-01-01

After a period when several types of power reactors were operated, the most part of the French nuclear power plants were built in a 10 years time on the basis of a PWR design. This very important effort allowed France to face the oil crisis and an increase of power demand. Today nuclear energy keeps all its relevance in the French energy mix but a larger contribution of renewable energies is expected progressively. Light water reactors will stay dominant in the 2, 3 decades to come because of their important feedback experience and their economical competitiveness. The emergence of the 4. generation is not sure, it will depend strongly on: -) the available resources of uranium, -) the extend of the use of nuclear energy in the world, and -) its competitiveness compared to the 3. generation. This series of slides is divided into 3 parts: 1) the nuclear power in the French energy mix, 2) 3. generation reactors versus 4. generation ones, and 3) The EPR at Flamanville and in the world (China, Usa and Great-Britain). (A.C.)

EDF at a glance 2003

International Nuclear Information System (INIS)

2004-01-01

This document presents the organization and key data of Electricite de France (EdF) group for 2003: business, priorities, values, different branches of the group (continental Europe, western Europe, Mediterranean branch, Africa, Asia-Pacific, Americas, Dalkia energy services, development branch), management, board of directors, market opening in France, human resource strategy, R and D, customers (residential, commercial, business and industrial, local authorities), industrial tool (fossil-fired generation, network management, renewable energy sources), reliability, financial flexibility, sustainable development (role of renewables in generation, CO 2 emissions, radiation protection, nuclear waste, environment, handling fuel poverty, landscape conservation), contacts and affiliates outside France. (J.S.)

Radiological objectives and severe accident mitigation strategy for the generation II PWRs in France in the framework of PLE

International Nuclear Information System (INIS)

Cenerino, G.; Dubreuil, M.; Raimond, E.; Pichereau, F.

2012-01-01

In France, EDF is involved in the construction of a first generation III (Gen III) reactor (European Pressurized Reactor - EPR) on Flamanville site next to two PWRs. Plant Life Extension (PLE) of reactors will consequently lead to simultaneous operation of Gen III and Gen II reactors during a long period of time. As a consequence, EDF was requested by the French Nuclear Safety Authority to prepare a PWR life management program including, in addition to an ageing management of Systems, Structures and Components, a consequent reactor safety enhancement program. The objective was stated to EDF by the French Nuclear Safety Authority: 'the safety objectives of the Gen III reactors should be used as a reference for all studies undertaken in the frame of PLE'. One part of the EDF program deals with additional arrangements able to reduce more drastically the consequences of any accident. The relevance, according to IRSN, of the EDF radiological objectives for Design Basis Accidents, of the new EDF objectives for Severe Accidents (SA) and of the EDF potential modifications for SA mitigation are presented. (author)

Results of and prospects for studies on molten salt nuclear reactors

International Nuclear Information System (INIS)

Hery, M.; Lecocq, A.

1983-04-01

This paper reviews the various studies performed in France by the EDF and CEA teams in the field of molten salt nuclear reactors. These studies include graphite moderating systems, feasibility of a 625 MWth core, lead cooling, structural materials, salts tritium diffusion and corrosion. The experience gained allows eventual development prospects of this system to appraised [fr

The Flamanville EPR: an EDF third generation reactor to prepare the future

International Nuclear Information System (INIS)

2011-11-01

This document presents the EPR reactor as an evolution of the currently operated nuclear reactors, but with a reinforced safety. It incorporates technological improvements which enable the number of incidents, the core fusion risk, the consequences of an accident, and workers' exposure to be reduced, the releases and the quantities of radioactive wastes to be limited, and the ecosystem to be preserved. It indicates the planning from public debate in 2004 to electricity production in 2016. It outlines the industrial cooperation for the plant construction, and economic consequences for the area

Does E.D.F. export at a loss

International Nuclear Information System (INIS)

Laramee, V.

1996-01-01

As European Energy markets should progressively open themselves to the free competition, Electricite de France (E.D.F.) is suspected by an energy research institute to sell abroad its kilowatts at a price inferior to the production cost. The situation and the different parameters to calculate the production cost are explained here. (N.C.)

Decision no 2010-DC-0188 by the Nuclear Safety Authority on the 7. of July 2010 specifying to Electricite de France-Societe Anonyme (EDF-SA) the limits of releases in the environment of liquid and gaseous effluents for the operation of Flamanville 1 (IBN n 108), Flamanville 2 (INB n 109) and Flamanville 3 (INB n 167) reactors

International Nuclear Information System (INIS)

2010-01-01

This document contains references to the different legal and official documents (codes, orders, minister's opinion, public surveys, administrative authorizations, local community opinion) at the root of this specification of limits related to releases in the environment of liquid and gaseous effluents by the three Flamanville nuclear reactors operated by Electricite de France-Societe Anonyme (EDF-SA). Tables present the limits for different gaseous and liquid radioactive emissions (carbon 14, hydrogen 3, iodine, radioactive rare earths, and other beta and gamma emitters) from these different installations, but also the maximum admitted concentrations for gaseous chemical effluents (boric acid, hydrazine hydrate, morpholine, phosphates, nitrates, various metals, and so on). The limits for thermal releases are also specified

A corporative ALARA engineering support for all EDF sites a major improvement: the generic work areas optimization studies

International Nuclear Information System (INIS)

Quiot, A.; Lebeau, J.

2005-01-01

ALARA studies performed by EDF plants are quite simple and empirical. Most often, feedback experience and common sense, with the help of simple calculations allow reaching useful and efficient decisions. This is particularly the case when the exposure situations are not complex, within a simple environment and with a single source, or one major source. However, in more complex cases this is not enough to guarantee that actual ALARA solutions are implemented. EDF has then decided to use its national corporate engineering as a support for its sites. That engineering support is in charge of using very efficient tools such as PANTHER-RP. The objective of the presentation is to describe the engineering process and tools now available at EDF, to illustrate them with a few case studies and to describe the goals and procedures set up by EDF. (authors)

A corporate ALARA engineering support for all EDF sites. A major improvement: the generic work areas optimisation studies

Energy Technology Data Exchange (ETDEWEB)

Quiot, Alain [EDF, SPT, UTO, Le Central, Bat. 420, BP 129, 93162 Noisy-le-Grand Cedex (France); Lebeau, Jacques [Electricite de France, ALARA Project, Site Cap Ampere, 1, place Pleyel, 93282 Saint Denis Cedex (France)

2004-07-01

ALARA studies performed by EDF plants are quite simple and empirical. Most often, feedback experience and common sense, with the help of simple calculations allow reaching useful and efficient decisions. This is particularly the case when the exposure situations are not complex, within a simple environment and with a single source, or one major source. However, in more complex cases this is not enough to guarantee that actual ALARA solutions are implemented. EDF has then decided to use its national corporate engineering as a support for its sites. That engineering support is in charge of using very efficient tools such as PANTHER-RP. The objective of the presentation is to describe the engineering process and tools now available at EDF, to illustrate them with a few case studies and to describe the goals and procedures set up by EDF. (authors)

Signal and image processing for monitoring and testing at EDF

International Nuclear Information System (INIS)

Georgel, B.; Garreau, D.

1992-04-01

The quality of monitoring and non destructive testing devices in plants and utilities today greatly depends on the efficient processing of signal and image data. In this context, signal or image processing techniques, such as adaptive filtering or detection or 3D reconstruction, are required whenever manufacturing nonconformances or faulty operation have to be recognized and identified. This paper reviews the issues of industrial image and signal processing, by briefly considering the relevant studies and projects under way at EDF. (authors). 1 fig., 11 refs

AREVA's nuclear reactors portfolio

International Nuclear Information System (INIS)

Marincic, A.

2009-01-01

A reasonable assumption for the estimated new build market for the next 25 years is over 340 GWe net. The number of prospect countries is growing almost each day. To address this new build market, AREVA is developing a comprehensive portfolio of reactors intended to meet a wide range of power requirements and of technology choices. The EPR reactor is the flagship of the fleet. Intended for large power requirements, the four first EPRs are being built in Finland, France and China. Other countries and customers are in view, citing just two examples: the Usa where the U.S. EPR has been selected as the technology of choice by several U.S utilities; and the United Kingdom where the Generic Design Acceptance process of the EPR design submitted by AREVA and EDF is well under way, and where there is a strong will to have a plant on line in 2017. For medium power ranges, the AREVA portfolio includes a boiling water reactor and a pressurized water reactor which both offer all of the advantages of an advanced plant design, with excellent safety performance and competitive power generation cost: -) KERENA (1250+ MWe), developed in collaboration with several European utilities, and in particular with Eon; -) ATMEA 1 (1100+ MWe), a 3-loop evolutionary PWR which is being developed by AREVA and Mitsubishi. AREVA is also preparing the future and is deeply involved into Gen IV concepts. It has developed the ANTARES modular HTR reactor (pre-conceptual design completed) and is building upon its vast Sodium Fast Reactor experience to take part into the development of the next prototype. (author)

The EPR reactor

International Nuclear Information System (INIS)

Lacoste, A.C.; Dupuy, Ph.; Gupta, O.; Perez, J.R.; Emond, D.; Cererino, G.; Rousseau, J.M.; Jeffroy, F.; Evrard, J.M.; Seiler, J.M.; Azarian, G.; Chaumont, B.; Dubail, A.; Fischer, M.; Tiippana, P.; Hyvarinen, J.; Zaleski, C.P.; Meritet, S.; Iglesias, F.; Vincent, C.; Massart, S.; Graillat, G.; Esteve, B.; Mansillon, Y.; Gatinol, C.; Carre, F.

2005-01-01

This document reviews economical and environmental aspects of the EPR project. The following topics are discussed: role and point of view of the French Nuclear Safety Authority on EPR, control of design and manufacturing of EPR by the French Nuclear Safety Authority, assessment by IRSN of EPR safety, research and development in support of EPR, STUK safety review of EPR design, standpoint on EPR, the place of EPR in the French energy policy, the place of EPR in EDF strategy, EPR spearhead of nuclear rebirth, the public debate, the local stakes concerning the building of EPR in France at Flamanville (Manche) and the research on fourth generation reactors. (A.L.B.)

The launching of the construction of the Jules Horowitz Reactor

International Nuclear Information System (INIS)

Anon.

2007-01-01

In March 2007 the French deputy minister of industry has officially launched the construction of the new research reactor called Jules Horowitz (RJH) on the Cea site of Cadarache. RJH, that is due to operate in 2014, will be used to study the aging process of irradiated materials in any type of reactors, the behaviour of new nuclear fuels irradiated in different configurations and scenarios, and to produce radionuclides for nuclear medicine and high-quality doped silicon for the electronics industry. The investment that reaches 500 million euros is dispatched between Cea (50%), EDF (20%), Areva (10%) and foreign contributors (20%). (A.C.)

Improvements of primary coolant shutdown chemistry and reactor coolant system cleanup

International Nuclear Information System (INIS)

Gaudard, G.; Gilles, B.; Mesnage, F.; Cattant, F.

2002-01-01

In the framework of a radiation exposure management program entitled >, EDF aims at decreasing the mass dosimetry of nuclear power plants workers. So, the annual dose per unit, which has improved from 2.44 m.Sv in 1991 to 1.08 in 2000, should target 0.8 mSv in the year 2005 term in order to meet the results of the best nuclear operators. One of the guidelines for irradiation source term reduction is the optimization of operation parameters, including reactor coolant system (RCS) chemistry in operation, RCS shutdown chemistry and RCS cleanup improvement. This paper presents the EDF strategy for the shutdown and start up RCS chemistry optimization. All the shutdown modes have been reviewed and for each of them, the chemical specifications will be fine tuned. A survey of some US PWRs shutdown practices has been conducted for an acid and reducing shutdown chemistry implementation test at one EDF unit. This survey shows that deviating from the EPRI recommended practice for acid and reducing shutdown chemistry is possible and that critical path impact can be minimized. The paper also presents some investigations about soluble and insoluble species behavior and characterization; the study focuses here on 110m Ag, 122 Sb, 124 Sb and iodine contamination. Concerning RCS cleanup improvement, the paper presents two studies. The first one highlights some limited design modifications that are either underway or planned, for an increased flow rate during the most critical periods of the shutdown. The second one focuses on the strategy EDF envisions for filters and resins selection criteria. Matching the study on contaminants behavior with the study of filters and resins selection criteria should allow improving the cleanup efficiency. (authors)

Multiple metamorphoses for EdF and GdF

International Nuclear Information System (INIS)

Jemain, A.

2004-01-01

The draft of law, modifying the statute of the French electric and gas utilities, Electricite de France (EdF) and Gaz de France (GdF), that the French government has presented to the Council of State, mixes some European and French preoccupations. The reason is the urgency of the planning and the date line of July 1, 2004 with the opening of the gas and power markets to 3.5 millions of professionals. The draft includes the obligations and missions of public utility of both companies, the transposition of the European directives, the conclusions of the negotiation of retirement pensions with the syndicate organizations, and the transformation of both public companies into anonymous companies. Short paper. (J.S.)

Designing on-Board Data Handling for EDF (Electric Ducted Fan) Rocket

Science.gov (United States)

Mulyana, A.; Faiz, L. A. A.

2018-02-01

The EDF (Electric Ducted Fan) rocket to launch requires a system of monitoring, tracking and controlling to allow the rocket to glide properly. One of the important components in the rocket is OBDH (On-Board Data Handling) which serves as a medium to perform commands and data processing. However, TTC (Telemetry, Tracking, and Command) are required to communicate between GCS (Ground Control Station) and OBDH on EDF rockets. So the design control system of EDF rockets and GCS for telemetry and telecommand needs to be made. In the design of integrated OBDH controller uses a lot of electronics modules, to know the behavior of rocket used IMU sensor (Inertial Measurement Unit) in which consist of 3-axis gyroscope sensor and Accelerometer 3-axis. To do tracking using GPS, compass sensor as a determinant of the direction of the rocket as well as a reference point on the z-axis of gyroscope sensor processing and used barometer sensors to measure the height of the rocket at the time of glide. The data can be known in real-time by sending data through radio modules at 2.4 GHz frequency using XBee-Pro S2B to GCS. By using windows filter, noises can be reduced, and it used to guarantee monitoring and controlling system can work properly.

Effects of fabrication requirements on fuel performance in relation to operating conditions. The views of Electricite de France (EDF)

International Nuclear Information System (INIS)

Ponticq, M.; Richer, P.; Scribe, G.

1979-01-01

Because of the operational constraints relating to fuel behaviour, imperfect knowledge of the behaviour of a defective fuel assembly and, in the near future, the need to adapt reactor power to grid following (load following and remote control), EDF is aiming to reduce the present rate of fuel failure. While the phenomena affecting fuel behaviour have now been listed and analysed, the efforts at reducing their consequences have yet to be completed. This can be achieved, firstly, by reducing or eliminating fabrication defects, which are responsible for failure at the beginning of fuel life, through establishment of a good quality assurance organization and the search for still higher efficiency of quality control and fabrication equipment, and secondly, by developing fabrication techniques minimizing in particular cladding-pellet interactions and the stress corrosion of the cladding, which are responsible for fuel failure as from mid-life. However, the reactor operating conditions likely to apply in the near future may lead, for a given fuel configuration, to a re-evaluation of the fabrication parameters of cladding and UO 2 pellets. (author)

Achievement of the level 1 PSA in support to the CEA 2400 MWth gas-cooled fast reactor

International Nuclear Information System (INIS)

Balmain, M.; Bassi, C.; Azria, P.

2012-01-01

Within Generation IV International Forum, the CEA has developed since 2006 a Level 1 PSA to support the design of the 2400 MWth GFR (Gas-cooled Fast Reactor). A first period, with insights published in 2008, consisted in a model with few initiators representative of medium and high pressure situations, those used for the deterministic design of the Decay Heat Removal (DHR) dedicated loops. In a second period, an iterative work reached the probabilistic targets used for generation III reactors, with prior use of normal loops, and increase of DHR reliability in high pressure conditions. The PSA team covered all the internal initiators, and supported the design of components with instrumentation and control and electrical supplies, and the shutdown operating modes of secondary, tertiary circuits, with possible re-alignment to dedicated DHR loops. Besides, the completed PSA integrated more realistic success criteria than the preliminary model and than the deterministic approach, thanks to CATHARE2 code. In case of loss of Forced Convection, the probability of success of the Natural Convection DHR was assessed by a reliability method for passive systems. The paper underlines the PSA methodology knowledge from the EDF expertise, the improvements co-developed with CEA, and the iteration design-PSA-design. (authors)

Position adopted by the government about the safety options of the EPR reactor project; Prise de position du gouvernement concernant les options de surete du projet de reacteur EPR

Energy Technology Data Exchange (ETDEWEB)

NONE

2004-10-01

On September 28, 2004, on behalf of the French ministers in charge of nuclear safety, the general director of nuclear safety and radiation protection addressed to the president of Electricite de France (EdF) a letter presenting the government's position about the safety options of the EPR (European Pressurized Reactor) project. On the basis of the examination carried out by the nuclear safety authority (ASN) and by the permanent group of reactor experts, the government has considered these options as satisfactory with respect to the safety improvement objectives. Therefore, the government requested EdF to comply with these technical rules for any future reactor development. This dossier includes: the letter of the government, the technical directives for the design and construction of the next generation of PWR-type reactors, the technical rules relative to the design of the main primary and secondary coolant circuits of PWR-type reactors, and the technical file about the safety of the EPR project reprinted from the 2003 report of nuclear safety and radiation protection authority. (J.S.)

EDF group - Reference Document, Annual Financial Report 2015

International Nuclear Information System (INIS)

2016-01-01

The EDF group is an integrated utility, active in all electricity businesses: nuclear, renewable and thermal generation, transmission, distribution, supply, efficiency and energy services and trading. It is the leading player in the French electricity market and holds strong positions in Europe (United Kingdom (UK), Italy, central and eastern European countries), which makes it one of the world's leading electric utility and a renowned gas player. With a global installed net generation capacity of 134.2 GWe as at 31 December 2015 producing 619.3 TWh, the Group has one of the largest generation fleet in the world. Among the ten largest global power suppliers, it produces the smallest amount of CO 2 per kilowatt-hour generated 2 thanks to the share of nuclear, hydro and other renewable energies in its generation mix. The EDF group supplies electricity, gas and related services to 37.6 million customer accounts 3 worldwide (of which 27.8 million in France). Electricity generation is a non-regulated activity, which is open to competition in the same way as the sale of electricity and gas and upstream/downstream optimisation. The Group is thus implementing an integrated model for the joint operational management of its portfolio of assets upstream (generation and procurement of energy and fuels) and downstream (wholesale and retail) to guarantee supply of energy to its customers through the best possible management of operational and market risks and with a view to maximising gross margin. In addition, the Group is also active in regulated sectors such as electricity transmission and distribution. This document is EDF Group's Reference Document and Annual Financial Report for the year 2015. It contains information about: the History and development of the Company, the organisation of the Group, the risk factors and control framework, the environmental and societal information - Human Resources, the corporate governance, The Group's performance in 2015 and

EDF feedback on recent EPRI SGOG SG chemical cleanings applications for TSP blockage reduction and heat transfer recover

International Nuclear Information System (INIS)

Dijoux, M.; De Bouvier, O.; Mercier, S.; Pages, D.; Bretelle, J.-L.; Leclercq, P.; Mermillod, A.

2010-01-01

Between 2007 and 2008, six Steam Generators Chemical Cleanings (SGCC) with the inhibitor free high temperature process were applied on EDF PWR units. The main goal was to reduce the excessive Tube Support Plate blockages observed on several units of the EDF fleet and the consequences on wide range levels and the risk of tube cracks. The heat transfer recovery was the second objective. Despite the correct results obtained, the corrosion impact of the high temperature process on internal metallic surfaces, higher than expected, and the environmental issues led EDF to move to a new cleaning process. The low temperature process developed by EPRI SGOG and applied for many years was selected for the same purpose. Some qualification laboratory tests were performed by Dominion Engineering Inc (DEI) to demonstrate the innocuousness an the efficiency of the process to achieve these goals. The EPRI SGOG process was then applied seven times by Westinghouse on the EDF units Cruas 3, Cruas 2, Belleville 1, Cattenom 1, Cattenom 3, Chinon B3 and Cattenom 4 between 2008 and 2010. All these units operate from the initial start at low AVT pH 25 o C (9,2) in the secondary circuit. Due to copper presence in the deposits to remove, the cleaning sequence 'Copper - Iron - Copper steps' was performed each time. After a short description of the process, including the specific adaptation in France, lessons learned are reported in this paper in the following areas: process monitoring, corrosion, efficiency, liquid and gaseous wastes, chemical pollution during start-up. Based on the 3 first applications in 2008, some modifications of the process were implemented, particularly for the copper step. For the units cleaned, 1100 to 4500 kg of deposits per SG have been removed, including TS sludge lancing. The reduction of TSP blockages was satisfying. The effect on steam pressure improvement and the wide range level is then discussed. The paper concludes on EDF perspectives for soft

1996, a turning point in the evolution of the EDF with good financial results; 1996, une annee charniere dans l'evolution d'EDF avec de bons resultants financiers

Energy Technology Data Exchange (ETDEWEB)

NONE

1997-03-01

This conference held on March 1997 presents the financial results obtained in 1996 by French Electricity Company EDF (Electricite de France). This year represented a turning point because essential landmarks were established in 1996. An european directive has been adopted in 1996 defining the framework in which european electricity market will function as well as the rules for its opening to competition. Discussions with the trade unions were conducted at the beginning of 1997and a social agreement aiming at the amelioration of services and hiring of 11,000 to 15,000 young people in the next three years. Finally, a new contract of enterprise with the state has been discussed and approved in March 5, 1997, which redefined the place and the role of EDF in the French economy, in the new stage of electricity market started by the opening to competition. The document contains the following 8 chapters: 1. Financial results and enterprise management; 2. Institutional frame and the relation with the state; 3. Development in France; 4. International development; 5. Alliances, partnerships and cooperation; 6. Management, social and human resources; 7. Environment; 8. Technical results.

Layup practices at EDF PWR fleet and future developments

International Nuclear Information System (INIS)

Ramos, Olga Alos; Pablo, Sergio De Maria; Wintergerst, Matthieu

2014-01-01

A proper lay-up can only be achieved by plant specific lay-up procedures. The layup control practices are necessary to prevent corrosion damage during shutdown and are an important part of the life time extension of a nuclear power plant. EDF operational experience in this area confirms that damage to plant equipment from improper layup procedures is a cause of reduced plant reliability and availability and can increase the corrosion products ingress into the SG during start-up. The plant preservation strategy applied across the EDF fleet is based on the following principles: Anticipated time frame of the required layup: short-term outages can become long-term outages, and can necessitate the use of unplanned preservation techniques. Dry layup for a long-term outage of the condensate/feedwater system: condenser vacuum assisted draining at high temperature, estimation of air requirements (flow rate, humidity...) to guarantee the optimum conditions inside the system. Wet lay up for a short-term outage of the condensate/feedwater system: system filled with operating medium, avoiding air ingress into the system, injection of chemical agents if necessary. Dry lay-up or wet lay up for the steam generators depending on maintenance work or radiation protection needed. This article presents the EDF layup program and the improvements in layup practices. It provides information on the layup procedures, best practices and recommendations, operating experience, considerations for different durations of outages; the implementation of a preservation working group, the selection of the systems that will be included in the lay-up program. Finally, future developments will be presented, such as the development of a 'convective model' to determine air requirements (humidity, flow rate...) and the drying rate to dry a heat exchanger. (author)

Probabilistic safety assessment of French 900 and 1,300 MWe nuclear plants

International Nuclear Information System (INIS)

Brisbois, J.; Lanore, J.M.

1991-08-01

Although reactor design is mainly governed by deterministic principles in France, the probabilistic approach has been considered an important aid to safety analysis since the early seventies. Various partial probabilistic studies have been performed by Electricite de France, by IPSN and by Framatome, for various types of reactor. In particular, these studies have made it possible to assess the reliability and availability of nuclear power plants safety systems as well as the probability of accident scenarios and have helped to define technical specifications (especially, allowed operating times in the event of a partial unavailability of safety systems). Simultaneously, evaluation methods and corresponding software have been widely developed. Besides. EDF has implemented the Systeme de Recueil de Donnees de Fiabilite - SRDF (Reliability Data Collection System) which allows follow-up of equipment behaviour on all the operating units, and has led to a particularly representative data base. In 1982 the decision was taken at IPSN to carry out a complete PSA for a standard reactor of the 900 MWe type, and in 1986 EDF launched an equivalent study on a 1,300 MWe reactor, taking Unit 3 Paluel as reference. These PSAs were terminated in the course of the first quarter of 1990

Probabilistic safety assessment of French 900 and 1,300 MWe nuclear plants

International Nuclear Information System (INIS)

Brisbois, J.; Lanore, J.M.

1991-01-01

Although reactor design is mainly governed by deterministic principles in France, the probabilistic approach has been considered an important aid to safety analysis since the early seventies. Various partial probabilistic studies have been performed by Electricite de France, by IPSN and by Framatome, for various types of reactor. In particular, these studies have made it possible to assess the reliability and availability of nuclear power plants safety systems as well as the probability of accident scenarios and have helped to define technical specifications (especially, allowed operating times in the event of a partial unavailability of safety systems). Simultaneously, evaluation methods and corresponding software have been widely developed. Besides. EDF has implemented the Systeme de Recueil de Donnees de Fiabilite - SRDF (Reliability Data Collection System) which allows follow-up of equipment behaviour on all the operating units, and has led to a particularly representative data base. In 1982 the decision was taken at IPSN to carry out a complete PSA for a standard reactor of the 900 MWe type, and in 1986 EDF launched an equivalent study on a 1,300 MWe reactor, taking Unit 3 Paluel as reference. These PSAs were terminated in the course of the first quarter of 1990. (author)

SIROCCO project: 15 advanced instructor desk and 4 simulated control room for 900MW and 1300MW EDF power plant simulators

International Nuclear Information System (INIS)

Alphonse, J.; Roth, P.; Sicard, Y.; Rudelli, P.

2006-01-01

This presentation describes the fifteen advanced instructors station and four simulated control delivered to EDF in the frame of the SIROCCO project by the Consortium formed by ATOS Origin, CORYS Tess, for the Electricite de France (EDF). These instructor stations are installed on fifteen replica training simulators located on different sites throughout France for the purposes of improving the job-related training of the EDF PWR nuclear power plant operating teams. This covers all 900 MW and 1300MW nuclear power plant of EDF. The simulated control rooms are installed on maintenance platform located at EDF and the consortium facilities. The consortium uses it to maintain and upgrade the simulators. EDF uses it to validate the upgrade delivered by the consortium before on site installation and to perform engineering analysis. This presentation sets out successively: - The major advantages of the generic and configurable connected module concept for flexible and quick adaptation to different simulators; - The innovative functionalities of the advanced Instructor Desk (IS) which make the instructor's tasks of preparation, monitoring and postanalysis of a training session easier and more homogeneous; - The use of the Simulated Control Room (SCR) for training purposes but also for those of maintenance and design studies for upgrades of existing control rooms

Make use of EDF orientations in PWR fuel management

International Nuclear Information System (INIS)

Gloaguen, A.

1989-01-01

The EDF experience acquired permits to allow the PWR fuel performances and to make use of better management. In this domain low progress can be given considerable financial profits. The industrial and commercial structures, the time constant of the fuel cycle, has for consequence that the electric utilities can take advantage only progressively of the expected profits [fr

Energy efficiency: EDF Optimal Solutions improves the l'Oreal firm of Vichy; Efficacite energetique: EDF Optimal Solutions ameliore l'usine l'Oreal de Vichy

Energy Technology Data Exchange (ETDEWEB)

Anon.

2011-09-15

The l'Oreal CAP site has inaugurated its energetic eco-efficiency installations realized by EDF Optimal Solutions. This solution combines several techniques and makes possible to halve its yearly CO{sub 2} releases. (O.M.)

Synthesis of the IRSN report on the issue of severe accidents which may occur on operating pressurised water nuclear reactors

International Nuclear Information System (INIS)

2008-01-01

While containing other related documents (expert report, mail), this synthetic report analyses and comments some aspects of the assessment and treatment of severe accidents by EDF in its operating PWRs (pressurised water nuclear reactors). These aspects are: the EDF referential related to severe accidents (objectives of consequence limitation and prevention, long term management, probabilistic objectives, radiological objectives, expected performance of equipment and systems), the re-assessment of the 'S3 reference source term' which corresponds to a typical discharge (selection of representative scenarios, new approach based on waste categorization, the taking into account of various species, components and systems), the water management in the reactor tank (risks of explosion, of critical corium level, etc.), the strategy of an anticipated opening of the containment envelope venting-filtration device in order to avoid a core fusion, and the risk associated by a cesspool filling-in by debris

Activation calculations for dismantling - The feedback of a 7 years experience in activation calculations for graphite gas cooled reactors in France

International Nuclear Information System (INIS)

Eid, M.; Nimal, J.C.; Gerat, L.M.

1994-01-01

This is a revision of the past seven years experience in activation calculations for dismantling. It aims at evaluating the experience and at making better understanding to help in decision making during the following phases. Five gas cooled reactors are shutdown and are waiting for the EDF (Electricite De France) dismantling decision. The sixth (BUGEY1) will be shutdown by 1994 and will be waiting a dismantling decision as well. (authors). 3 figs., 3 tabs

The law that threatens EdF's monopoly

International Nuclear Information System (INIS)

Dupin, L.

2010-01-01

The French house of commons has examined the bill about the new organisation of the French electricity market (Nome in French). Its goal is to reform the actual market and to create a real competition. The bill has five stakes: to put an end to the European dispute, to give to EdF's competitors an access to its nuclear production, to improve the management of consumption peaks, to harmonize the generation and the consumption prices, to prepare the French market to the real competition. (J.S.)

Control and maintenance of the Superphenix knowledge and its specific sodium skills through an innovative partnership between EDF and AREVA

International Nuclear Information System (INIS)

Calais, Thomas; Rauber, Jean-Claude

2016-01-01

Superphenix is a 1200 MWe sodium cooled Fast Breeder Reactor (FBR) located in Creys-Malville (France). Its grid coupling occurred in 1986 and its final shutdown pronounced through a decree, 12 years later, in 1998. This Superphenix final shutdown decision marked a new stage in the life of the nuclear plant. Decommissioning activities were highly challenging due to the following: - Non recurrent and first-of-a-kind (FOAK) characteristics; - Environment constraints: radiation level, high temperatures, presence of argon, sodium, NaK, soda, hydrogen, etc.; - Complexity of the primary vessel internal structures; - Numerous interfaces to manage; - Numerous technical uncertainties due to the difficulty in anticipating the effective state of components (sodium and aerosols retentions, tritium concentration, NaK alteration, etc.). At the end of 1998, exchanges took place between EDF as 'Superphenix nuclear operator' and AREVA as 'Superphenix Nuclear Steam System Supply (NSSS) designer' in order to find the best way to meet the new challenge of decommissioning Superphenix. A key ingredient to achieving success was to ensure that existing local and specific sodium skills were controlled and maintained. AREVA was selected by EDF as its industrial partner for the sodium activities on this project being entrusted with the following missions: - Maintaining and adapting a strong EDF / AREVA partnership within the project duration; - Supplying support as the 'NSSS Designer'; - Rolling-out multidisciplinary skills from the design to the on-site operations; - Relying on its best technical experts to solve each technical challenge; - Developing and adapting durable specific skills of its technical team (sodium, mechanical, process, I and C, statutory, etc.) following each stage of the decommissioning. This EDF/AREVA partnership on the sodium activities has taken different forms according to the different stages of the project. From 1998 to 2005, AREVA was

Characteristics and economy of the European reactor of pressurized water (EPR); Caracteristicas y economia del reactor europeo de agua a presion (EPR)

Energy Technology Data Exchange (ETDEWEB)

Ortiz V, J.; Ramirez S, J.R.; Palacios H, J.C. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)]. e-mail: jov@nuclear.inin.mx

2005-07-01

The high current costs of the fossil fuels, have propitiated that the industries of electric power generation in the world reconsider the nuclear option as medium of generation. In Europe, the more recently contracted nuclear power plant is that of Olkiluoto-III in Finland that waits it enters in operation at the end of 2009. The reactor that will be installed in this power plant will be a prototype of pressurized water reactor of the companies AREVA and EDF. In this work they are described the reactor EPR and the major components of the nuclear power plant as well as the main characteristics of safety and the flexibility of the operation of the EPR. The supposed costs reported in different sources of information are also described and calculated with information provided by the manufacturer company. (Author)

Assessment of public safety around EDF facilities

Energy Technology Data Exchange (ETDEWEB)

Poupart, M. [Electricite de France, Paris (France)

2004-09-01

Electricite de France (EDF) recognizes that a dam's structural resistance and its capacity to withstand heavy flooding are 2 of the most significant safety aspects for hydroelectric power stations. However, in addition to dam failure, there are safety risks for the public who frequent the rivers up and down stream from the dam, as well as on property and the environment. A fatal accident which occurred in 1995 down river from EDF's Monteynard hydroelectric facility on the Drac River prompted the utility to take measures to improve control over this type of hazard. Collaboration with public authorities led to an action plan to educate the public about possible danger areas and to improve methods of reducing risks. Regulations regarding access to these areas were also studied along with ways of informing and warning the public. All the stretches of river directly above and below the power stations and dams were listed systematically and a qualitative analysis was carried out of any possible dangers. This led to changes in operating rules, technical instructions and power plant operating regulations. Certain areas are designated as prohibited areas, such as places subject to hazards caused by violent and unexpected water discharges. This paper outlined the Hydraulic Safety Significant Event (HSSE) classification which relates to an operational event related to water that is liable to affect human beings, the environment, water level or flow rate. 9 figs.

Contribution of statistic to the industrial problems of maintenance at EDF; Apport de la statistique a la problematique industrielle de la maintenance chez EDF

Energy Technology Data Exchange (ETDEWEB)

Cagnac, A.; Hervouet, C.; Bonnevialle, A.M.; Remy, E. [Electricite de France (EDF-RD), 78 - Chatou (France); Gay, N. [Electricite de France (EDF DPN), 93 - Saint-Denis (France)

2006-07-01

EDF/R and D was requested to take part in a program launched by EDF/DPN. The objective is to deal with the ASN request (Nuclear Safety Authorities), aiming at evaluating the feasibility of zero-leakage of the Steam Generators tube bundle during Primary Hydraulic Test (PHT) which will be carried out within the next decennial visits. A way to satisfy this objective is to plug the SG's tubes that can potentially contribute to the leakage. However, it is necessary to choose carefully the SG tubes to plug, in order to both, reduce significantly the SG's leak-flow during the test and limit the number of plugged tubes, which would imply an anticipation of the steam generator replacement. Within this framework, EDF/R and D/MRI carried out a preliminary statistical analysis from the feedback experience of the hydraulic tests carried out on units at the time of their first and second decennial visits. The goal was to identify, based on the control databases, the characteristics of the most contributing tubes to the leakage. The model obtained makes it possible to predict whether a steam generator will be leaky or not at the time of the hydraulic test, according to its state of cracking. The model provides a probability of considering the steam generator as leaky according to the sum of crack-lengths higher than a given threshold. This model was practically applied for the first time in 2005 in order to optimise the choice of the tubes to plug before the primary hydraulic test of the steam generators of a nuclear unit. Due to this optimised plugging, the leak-flows in PHT were sufficiently low and ensured the provisional life duration of these steam generators. (authors)

EDF's approach to determine specifications for nuclear power plant bulk chemicals

International Nuclear Information System (INIS)

Basile, Alix; Dijoux, Michel; Le-Calvar, Marc; Gressier, Frederic; Mole, Didier

2012-09-01

Chemical impurities in the primary, secondary and auxiliary nuclear power plants circuits generate risks of corrosion of the fuel cladding, steel and nickel based alloys. The PMUC (Products and Materials Used in plants) organization established by EDF intends to limit this risk by specifying maximum levels of impurities in products and materials used for the operation and maintenance of Nuclear Power Plants (NPPs). Bulk chemicals specifications, applied on primary and secondary circuit chemicals and hydrogen and nitrogen gases, are particularly important to prevent chemical species to be involved in the corrosion of the NPPs materials. The application of EDF specifications should lead to reasonably exclude any risk of degradation of the first and second containment barriers and auxiliary circuits Important to Safety (IPS) by limiting the concentrations of chlorides, fluorides, sulfates... The risk of metal embrittlement by elements with low melting point (mercury, lead...) is also included. For the primary circuit, the specifications intend to exclude the risk of activation of impurities introduced by the bulk chemicals. For the first containment barrier, to reduce the risk of deposits like zeolites, PMUC products specifications set limit values for calcium, magnesium, aluminum and silica. EDF's approach for establishing specifications for bulk chemicals is taking also into account the capacity of industrial production, as well as costs, limitations of analytical control methods (detection limits) and environmental releases issues. This paper aims to explain EDF's approach relative to specifications of impurities in bulk chemicals. Also presented are the various parameters taken into account to determine the maximum pollution levels in the chemicals, the theoretical hypothesis to set the specifications and the calculation method used to verify that the specifications are suitable. (authors)

The position of Electricite de France (EDF) on the European Commission strategy against acidification; Position de l`Electricite de France (EDF) sur la strategie de lutte contre l`acidification de la commission europeenne

Energy Technology Data Exchange (ETDEWEB)

Bartaire, J.G. [Electricite de France (EDF), 94 - Vitry-sur-Seine (France)

1997-12-31

Electricite de France (EDF), the French national power utility, presents several observations on the European Union 1997 project for the reduction of air pollution and acidification in Europe. Although EDF is globally approving the European Commission determination for a common strategy, several points are pinned, which are related to the necessity of technical-economical impact analysis of the strategy, the synchronization with the sulfur protocol and the projected United Nation protocol, a stronger consideration of emission sources others than power plants, the consideration of national specificities, situation in Eastern Europe, and limitations in the reliability of models and tools used by the Commission

1996, a turning point in the evolution of the EDF with good financial results; 1996, une annee charniere dans l'evolution d'EDF avec de bons resultants financiers

Energy Technology Data Exchange (ETDEWEB)

NONE

1997-03-01

This conference held on March 1997 presents the financial results obtained in 1996 by French Electricity Company EDF (Electricite de France). This year represented a turning point because essential landmarks were established in 1996. An european directive has been adopted in 1996 defining the framework in which european electricity market will function as well as the rules for its opening to competition. Discussions with the trade unions were conducted at the beginning of 1997and a social agreement aiming at the amelioration of services and hiring of 11,000 to 15,000 young people in the next three years. Finally, a new contract of enterprise with the state has been discussed and approved in March 5, 1997, which redefined the place and the role of EDF in the French economy, in the new stage of electricity market started by the opening to competition. The document contains the following 8 chapters: 1. Financial results and enterprise management; 2. Institutional frame and the relation with the state; 3. Development in France; 4. International development; 5. Alliances, partnerships and cooperation; 6. Management, social and human resources; 7. Environment; 8. Technical results.

Station blackout: Deterministic and probabilistic approach in the field of electrical supply losses by EDF

International Nuclear Information System (INIS)

Meslin, T.; Carnino, A.

1986-01-01

This example shows the thoroughness of EDF's approach in processing the difficult problems of the loss of electrical power supplies. Efforts are continuing in several directions: continued revision and improvement of operating procedures in the event of loss of electrical power supplies, PWR plant operator training courses devoted to the problems of power supply losses, and continued testing on simulators, and particularly testing under real conditions, including tests lasting several hours made possible by the performance of the new EDF simulators (two-phase code and taking all power losses into account)

Strengthening the radiation protection culture: a priority of EDF radiation protection policy

International Nuclear Information System (INIS)

Garcier, Y.

2006-01-01

Full text of publication follows: In order to improve the management of radiation protection at EDF nuclear power plants, the Human Factors Group of the Research and Development Division of EDF has performed some studies on the appropriation process of the radiation protection requirements. These studies have notably shown that an efficient application of the radiation protection requirements lies on a comprehension by all workers of the meaning of these requirements. Furthermore, they should not be applied under the constraint or because of the fear of a sanction, but the workers need to perceive and understand the benefits in terms of protection associated with the radiation protection requirements. The strengthening of the radiation protection culture is therefore a key element of the radiation protection policy developed by EDF. This culture lies on an awareness of the health risks potentially associated with low levels of ionising radiations, as well as on the knowledge of tools, techniques and good practices developed to control the level of exposures and improve the radiation protection. Various type of actions have been undertaken to reinforce among the relevant players (exposed and non-exposed workers, contractors, all levels of management,... ) an awareness of radiation protection in order to integrate it in their day to day work: elaboration of a 'radiation protection system of reference' explaining how the radiation protection regulatory requirements are applied at EDF, publication of a 'radiation protection handbook' available for all workers (including contractors), training sessions, creation of networks of specialists from the various nuclear power plants on specific radiation protection issues, organisation of feed-back experience forum, etc. Beyond these specific actions, i t is also important to ensure a support and an assistance on the field by dedicated specialists. In this perspective, the health physicists have to play a key role in order to

The nuclear power stations of the French atomic energy programme (1960)

International Nuclear Information System (INIS)

Leduc, C.

1960-01-01

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) [fr

EDF group - Reference Document, Annual Financial Report 2011

International Nuclear Information System (INIS)

2012-01-01

The EDF group is an integrated energy company with a presence in a wide range of electricity-related businesses: nuclear, renewable and fossil-fuel fired energy production, transmission, distribution, marketing as well as energy management and efficiency services, along with energy trading. It is France's leading electricity operator and has a strong position in Europe (United Kingdom, Italy, countries in Central and Eastern Europe), making it one of the world's leading electrical providers as well as a recognized player in the gas industry. With a worldwide net installed capacity of 134.6 GWe as of 31 December 2011 (124.2 GWe in Europe) and global energy generation of 628.2 TWh, the Group has one of the largest generating capacities of all the major worldwide energy corporations with the lowest level of CO 2 emissions per KWh generated due to the proportion of nuclear, hydroelectric power and other renewable energies in its generation mix. The EDF group supplies electricity, gas and associated services to more than 37.7 million customer accounts worldwide (including nearly 27.9 million in France). The Group's businesses reflect its adoption of a model aimed at finding the best balance between French and international activities, competitive and regulated operations and based on an upstream-downstream integration. In 2011, the Group's consolidated sales revenues was 65.3 billion Euros, earnings before interest, tax, depreciation and amortization came to 14.8 billion Euros, and net income excluding non-recurring items stood at 3.5 billion Euros. This document is EDF Group's Reference Document and Annual Financial Report for the year 2012. It contains information about: the Group activities, risk factors, Investments, Business, Strategy, Organisational charts, Property, plant and equipment, Operating and financial review, Cash flows and capital, Research and development, patents and licenses, Information on trends, Financial outlook

The economics of fast breeder reactors

International Nuclear Information System (INIS)

Rapin, M.

1990-01-01

The overall status of the fast breeder reactor (FBR) system is periodically reviewed in France. In 1983, a report was prepared on the status and prospects of the FBR system at the request of the then Minister of Industry. Five years later, Electricite de France (EdF) and the French Atomic Energy Commission (CEA) jointly updated this report. The FBR reactor system economic considerations mentioned here are taken from the work performed in 1987-88 for this updating. The position in 1983 is reviewed to highlight concrete developments. Developments that have occurred since then are presented, along with the prospects that today enable us to define better the technical and economic potential of the FBR system. In conclusion, the effects of these findings on desirable directions are discussed, in particular with regard to European FBR cooperation. (author)

Lay-up practices at EDF PWR fleet and future developments

International Nuclear Information System (INIS)

Alos Ramos, O.; Wintergest, M.; De Maria Pablo, S.; Postic, A.; Courtaudiere, J.P.; Fournier, C.; Vialette, R.; Waeber, J.; Couturier, D.; Robillart, P.

2015-01-01

A proper lay-up can only be achieved by plant specific lay-up procedures. The lay-up control practices are necessary to prevent corrosion damage during shut down and are an important part of the life extension of a nuclear power plant. EDF operational experience in this area confirms that damage to plant equipment from improper lay-up procedures is a cause of reduced plant reliability and availability and can increase the corrosion products ingress into the SG during start-up. This article presents the EDF lay-up program and the improvement of lay-up practices. It provides information on the lay-up procedures, best practices and recommendations, operating experience, considerations for different durations of outages; the implementation of a preservation working group, the selection of the systems that will be included in the lay-up program and the material damage characterization in some auxiliary systems. Finally, future developments will be presented, such as the development of a 'convective model' to determine air requirements (humidity, flow rate...) and the drying rate to dry a heat exchanger. (authors)

EDF, a utility and its own needs in the field of transport of nuclear materials

International Nuclear Information System (INIS)

Gouin, P.; Mignot, E.; Hoang, L.P.

1989-01-01

As one of the most important producers of nuclear electricity in the world, EDF is concerned by all the aspects of the transport of nuclear materials and more particularly by those related to the nuclear fuel cycle. EDF is not itself a specialist in this field and most of the transports along the nuclear fuel cycle is done for their own account by their usual partners such as COGEMA or TRANSNUCLEAIRE. Since the beginning of the French nuclear program, they have generally used for these transports casks that already exist on the market and which were well suited to their needs. Nevertheless, new and specific needs appeared during the progress of their nuclear program and have lead them to: study and build new casks or packages, use existing casks for new purposes, develop a device for the measurement of fuel assemblies burn up, develop a software to optimize the evacuation of irradiated fuel for reprocessing. The purpose of this paper is to describe these realization but as a preliminary, they will present briefly the importance of the transport of nuclear materials for EDF

EDF - 2006 full-year results, 2006 Financial report

International Nuclear Information System (INIS)

Gadonneix, Pierre

2007-04-01

As the world's biggest electricity generator, the EDF Group covers every sector of expertise, from generation to trading and transmission grids. EDF builds on the expertise of its people, its R and D and engineering skills, its experience as a leading industry operator and the attentive support of its customers to deliver competitive solutions that successfully reconcile economic growth with climate protection. This document presents the 2006 annual results and Consolidated financial statements of the Group at 31 December 2006: Consolidated income statements, Consolidated balance sheets, Consolidated cash flow statements, Changes in consolidated equity, Notes: Group accounting policies, Summary of accounting and valuation methods, Public distribution concessions in France, Comparability, Significant events and transactions of 2006 and 2005, Changes in the scope of consolidation, Segment reporting, Sales, Fuel and energy purchases, Other external expenses, Contractual obligations and commitments, Personnel expenses, Other operating income and expenses, Impairments / reversals, Other income and expenses, Financial result, Income taxes, Goodwill, Other intangible assets, Property, plant and equipment, Investments in companies accounted for under the equity method, Financial assets, Inventories including work-in-process, Trade receivables, Other receivables, Cash and cash equivalents, Held-for-sale assets and liabilities, Equity, Provisions, Special concession liabilities, Current and non-current financial liabilities, Derivatives, Other liabilities, Contribution of joint ventures, Related parties, Environment, Subsequent events, Transition to standards IAS 32 and 39 concerning financial instruments, Scope of consolidation

Nuclear tourists: the challenge of EDF's production sites accessibility, 1974-1991

International Nuclear Information System (INIS)

Lopez, Fanny

2014-01-01

This article focuses on the evolution of accessibility of Electricite de France (EDF) production sites when the country chose energy independence in 1974. If the nuclear program seems to be at the origins of French industrial tourism, which process made these energy plants a touristic attraction?

EDF - 2007 results, 2007 Financial report

International Nuclear Information System (INIS)

Gadonneix, Pierre

2008-01-01

As the world's biggest electricity generator, the EDF Group covers every sector of expertise, from generation to trading and transmission grids. EDF builds on the expertise of its people, its R and D and engineering skills, its experience as a leading industry operator and the attentive support of its customers to deliver competitive solutions that successfully reconcile economic growth with climate protection. This document presents the 2007 annual results and Consolidated financial statements of the Group at 31 December 2007: Consolidated income statements; Consolidated balance sheets; Consolidated cash flow statements; Changes in consolidated equity; Notes to the consolidated financial statements: Group accounting standards; Summary of the principal accounting and valuation methods; Public electricity distribution concessions in France and concession agreements for other activities; Comparability; Significant events and transactions of 2007 and 2006; Changes in the scope of consolidation; Segment reporting; Sales; Fuel and energy purchases; Other external expenses; Contractual obligations and commitments; Personnel expenses; Other operating income and expenses; Impairments / reversals; Other operating income and expenses; Financial result; Income taxes; Goodwill; Other intangible assets; Property, plant and equipment operated under French public electricity distribution concessions; Property, plant and equipment operated under concessions for other activities; Property, plant and equipment used in generation and other tangible assets owned by the Group; Investments in companies accounted for under the equity method; Current and non-current financial assets; Inventories, including work-in-process; Trade receivables; Other receivables; Cash and cash equivalents; Held-for-sale assets and liabilities; Equity; Provisions; Specific French public electricity distribution concession liabilities for existing assets and assets to be replaced; Current and non

Nuclear Safety: Our Overriding Priority. EDF Group Report 2015 in response to FTSE4Good Nuclear Criteria

International Nuclear Information System (INIS)

Maillart, H.

2015-01-01

EDF is the world's leading nuclear operator with 74.8 GW of installed capacity in France, the United Kingdom and the United States, an EPR under construction in France, and 2 EPRs under construction in China through TNPJVC (EDF 30%), a joint venture with CGNPC. As such, EDF acts at all stages in the life of its power plants (design, construction, operation, decommissioning) to: - ensure rigorous operation of facilities; - prevent all incidents and accidents; - reduce the impact of any incidents or accidents that might nevertheless occur. The main safety measures were published in a single document in 2015 setting out the Group's nuclear safety policy. Each nuclear operating company inside the Group acts in compliance with the legal obligations and regulations specific to its host country. Each company works to ensure and continuously improve its safety performance with its own methods, skills and values. The EDF Group respects national differences. At the same time it frames common principles to deliver the highest level of incident prevention and protection of the public, workers and the environment. This policy applies to new projects (overall architecture, design and construction) and all existing plants (operation, maintenance, waste management, decommissioning and engineering). The Group works closely with its industrial partners to deliver these objectives. Each company is responsible for the proper operation of its nuclear activities, and delegates responsibilities appropriately to each level of management or operation. The Group guarantees the allocation of resources needed to ensure nuclear safety. An in-house independent nuclear safety function is in place at power plant level, company level and Group level. Each has a duty to alert senior management of inappropriate or inadequate line management response. Nuclear safety is the absolute priority for the EDF Group at every stage of the plant life-cycle. Each company is responsible for ensuring that its

A restructuring of the CF/EDF packages for the MIDAS computer code

International Nuclear Information System (INIS)

Park, S.H.; Kim, K.R.; Kim, D.H.

2004-01-01

The CF and EDF packages, which allow the user to define the functions of variables in a database and the usage of an external data file, have been restructured for the MIDAS computer code. MIDAS is being developed as an integrated severe accident analysis code with a user-friendly graphical user interface and a modernized data structure. To restructure the code, the data transferring methods of the current MELCOR code are modified and then partially adopted into the CF/EDF packages. The data structure of the current MELCOR code using FORTRAN77 has a difficulty in grasping the meaning of the variables as pointers are used to define their addresses. New features of FORTRAN90 make it possible to allocate the storage dynamically and to use the user-defined data type without pointers leading to an efficient memory treatment and an easy understanding of the code. Restructuring of the CF/EDF packages addressed in this paper includes a module development and subroutine modification. The verification has been done by comparing the results of the modified code with those of the existing code and the trends are almost the same to each other. Therefore the similar approach could be extended to the entire code package for code restructuring. It is expected that the code restructuring will accelerate the code's domestication thanks to a direct understanding of each variable and an easy implementation of the modified or newly developed models. (author)

EDF. Group dynamics and activities. Competitive environment and strategic perspectives. Release - October 2017

International Nuclear Information System (INIS)

2017-10-01

After a synthesis, this report proposes a presentation of the EDF Group (general overview, activities, human resources, share-holding structure, stock market data). It gives an overview of the EDF Group dynamics and of its activities: environment analysis (world electric power production, power consumption in France, regulated and spot prices, turnover in France and per area and market segment), performance analysis, and competitive analysis (comparison with the main European energy companies). It analyses the different development axes and discusses main events regarding the consolidation of nuclear activities, investments in renewable energies, withdrawal from coal and fuel, diversification in energy services, and financial consolidation. Financial data are presented along with the main economic and financial indicators. Important statistical data are provided

A Comparison between Fixed Priority and EDF Scheduling accounting for Cache Related Pre-emption Delays

Directory of Open Access Journals (Sweden)

Will Lunniss

2014-04-01

Full Text Available In multitasking real-time systems, the choice of scheduling algorithm is an important factor to ensure that response time requirements are met while maximising limited system resources. Two popular scheduling algorithms include fixed priority (FP and earliest deadline first (EDF. While they have been studied in great detail before, they have not been compared when taking into account cache related pre-emption delays (CRPD. Memory and cache are split into a number of blocks containing instructions and data. During a pre-emption, cache blocks from the pre-empting task can evict those of the pre-empted task. When the pre-empted task is resumed, if it then has to re-load the evicted blocks, CRPD are introduced which then affect the schedulability of the task. In this paper we compare FP and EDF scheduling algorithms in the presence of CRPD using the state-of-the-art CRPD analysis. We find that when CRPD is accounted for, the performance gains offered by EDF over FP, while still notable, are diminished. Furthermore, we find that under scenarios that cause relatively high CRPD, task layout optimisation techniques can be applied to allow FP to schedule tasksets at a similar processor utilisation to EDF. Thus making the choice of the task layout in memory as important as the choice of scheduling algorithm. This is very relevant for industry, as it is much cheaper and simpler to adjust the task layout through the linker than it is to switch the scheduling algorithm.

Seismic analysis of a PWR 900 reactor: study of reactor building with soil-structure interaction and evaluation of floor spectra

International Nuclear Information System (INIS)

Gantenbein, F.; Aguilar, J.

1983-08-01

The purpose of this paper is the evaluation of seismic response and floor spectra for a typical PWR 900 reactor building with respect to soil-structure interaction for soil stiffness). The typical PWR 900 reactor building consists of a concrete cylindrical external building and roof dome, a concrete internal structure (internals) on a common foundation mat as illustrated. The seismic response is obtained by SRSS method and floor spectra directly from ground spectrum and modal properties of the structure. Seismic responses and floor spectra computation is performed in the case of two different ground spectra: EDF spectrum (mean of oscillator spectra obtained from 8 californian records) normalized to 0.2 g, and DSN spectrum (typical of shallow seism) normalized to 0.3 g. The first section is devoted to internals' modelisation, the second one to the axisymmetric model of the reactor, the third one to the seismic response, the fourth one to floor spectra

The EDF Group - Reference Document, annual financial report 2011

International Nuclear Information System (INIS)

2012-04-01

This report gathers information and comments about the French electric utility EDF, persons in charge of this document, account legal auditors, risk factors, activities in France and abroad, the company's organization and flowchart, its estate properties, its financial situation and results, its accounts and capitals, its research and development activities, patents and licenses, trends, financial perspectives, its administration, management and control bodies and their operation, its salaries, shareholders

Order of the 15. of September 2010 approving the decision no 2010-DC-0188 by the Nuclear Safety Authority on the 7. of July 2010 specifying to Electricite de France-Societe Anonyme (EDF-SA) the limits of releases in the environment of liquid and gaseous effluents for the operation of Flamanville 1 (INB n 108), Flamanville 2 (INB n 109) and Flamanville 3 (INB n 167) reactors

International Nuclear Information System (INIS)

2010-01-01

This legal publication contains references to the different legal and official documents (codes, orders, minister's opinion, public surveys, administrative authorizations, local community opinion) at the root of this specification of limits related to releases in the environment of liquid and gaseous effluents by the three Flamanville nuclear reactors operated by Electricite de France-Societe Anonyme (EDF-SA). Tables present the limits for different gaseous and liquid radioactive emissions (carbon 14, hydrogen 3, iodine, radioactive rare earths, and other beta and gamma emitters) from these different installations, but also the maximum admitted concentrations for gaseous chemical effluents (boric acid, hydrazine hydrate, morpholine, phosphates, nitrates, various metals, and so on). The limits for thermal releases are also specified

EDF guide book for decontamination at power plant

International Nuclear Information System (INIS)

Glorennec, C.; Bemer, J.P.

1988-01-01

Nuclear Power Plant components or equipment often need to be more or less decontaminated before undergoing maintenance. In order to coordinate the activities of the different maintenance specialists belonging to the corporate or site organizations, the management of EDF/Nuclear and Fossil Division has created a decontamination task force. One of the objectives of this task force was to elaborate the present Guide Book for Decontamination at Power Plants. This paper provides assistance to nuclear plants operators in the very specific field of decontamination

Offensive strategy: Suez wants to hustle EdF

International Nuclear Information System (INIS)

Jemain, A.

2003-01-01

Using Electrabel, its new energy pole, the private company Suez is looking for multiple ways of entry to reinforce its positions in France in the gas and electric power sectors in the prospect of the complete opening of energy markets in 2004. This article analyzes the strategy of Suez to become the most credible challenger of EdF, the French historical national electric utility: reorganization of its industrial and commercial activities, gain of new clients and definition of a new strategy for the gas market. (J.S.)

Current and anticipated uses of the CATHARE code at EDF and FRAMATOME

Energy Technology Data Exchange (ETDEWEB)

Gandrille, J.L.; Vacher, J.L.; Poizat, F.

1997-07-01

This paper presents current industrial applications of the CATHARE code in the fields of Safety Studies and Simulators where the code is intensively used by FRAMATOME, EDF and CEA, the development partners of CATHARE. Future needs in these fields are also recapitulated.

Current and anticipated uses of the CATHARE code at EDF and FRAMATOME

International Nuclear Information System (INIS)

Gandrille, J.L.; Vacher, J.L.; Poizat, F.

1997-01-01

This paper presents current industrial applications of the CATHARE code in the fields of Safety Studies and Simulators where the code is intensively used by FRAMATOME, EDF and CEA, the development partners of CATHARE. Future needs in these fields are also recapitulated

Calculation scheme for boiling water reactors cores; Methode de calcul des coeurs de reacteurs a eau bouillante par le systeme saphyr

Energy Technology Data Exchange (ETDEWEB)

Marsault, Ph [CEA Cadarache, Dept. d' Etudes des Reacteurs (DER/SERSI), 13 - Saint-Paul-lez-Durance (France); Nicolas, A; Lenain, R; Richebois, E; Royer, E; Caruge, D [CEA Saclay, Dept. de Mecanique et de Technologie (DMT/SERMA), 91 - Gif-sur-Yvette (France); Blaise, P [CEA Cadarache, Dept. d' Etudes des Reacteurs (DER/SPEX), 13 - Saint-Paul-lez-Durance (France); Gastaldi, B; Delpech, M [CEA Cadarache, Dept. d' Etudes des Reacteurs (DER/SPRC), 13 - Saint-Paul-lez-Durance (France)

1999-07-01

Boiling Water Reactors represent one third of the world's reactors. They are presently evolving towards greater simplification, allowing a reduction in the costs of operation, improved safety and a relative flexibility in their capacity to accommodate 100% MOX cores. The CEA, in a combined effort with its partners, the COGEMA and the EDF, would like to assess the interest of this reactor type, especially on this last point. A definition program and subsequent qualification of the calculation scheme have been undertaken. We are presenting here the specific features inherent in the calculation of these reactors, in comparison to PWRs, as well as the first results of the program. (authors)

Inception of the light water reactor system in France and its fuel cycle

International Nuclear Information System (INIS)

Gaussot, D.; Elkouby, A.; Sornein, J.

1977-01-01

The electro-nuclear equipment program of Electricite de France (E.D.F.) currently is based on the construction or the commitment of a considerable number of units equiped with pressurized water reactors. The program was preceded by the construction jointly by EDF and Belgian electric utilities of nuclear plants at Chooz (SENA) and Tihange (SEMO). The program as such began with the construction of Units 1 and 2 at Fessenheim, (of which information is given on the start-up), then of Bugey 2, 3, 4 and 5. This was followed by the construction of a series of units of 900 MW, and since 1976, of a series of units of 1300 MW. The successful implementation of such a program is based on a number of technical and organizational guidelines, which are described. The main characteristics of the 3-loop 900 MW and 4-loop 1300 MW NSSS and their fuel are considered. Stress is laid in particular on the development of the 900 MW NSSS from Fessenheim to Bugey. These programs call for winning and processing a great deal of nuclear material right through the fuel cycle. Data are given on the quantities involved and on the production potential permitting the fulfillment of the program (nat. U, enriched UF 6 , fuel subassemblies, reprocessing). The requirements of the EDF, (the NSSS supplier and the industries), the contribution made by the French Atomic Energy Commission (CEA), and international cooperation now in progress, are described. Lastly a number of significant actions both under way and scheduled, are discussed [fr

The atomic industry, it is me

International Nuclear Information System (INIS)

Moal, C.

2009-01-01

Henri Proglio, the new director of EdF (the French historical electric utility), is presenting himself as the new 'boss' of the French nuclear industry. EdF's weight represents 127 GW of installed power (96 GW in France), the first World nuclear park with 58 reactors (among which about a third are stopped), a turnover of 64.3 billion euros in 2008 (+7.8%), a net result of 4.3 billion euros (-7.9%) and a manpower of 160913 employees. This article presents H. Proglio's projects for EdF (development of medium-power reactors for emerging countries, improvement of reactors availability), and what EdF's clients, suppliers, competitors and employees expect from him, in particular on the topics of electricity tariffs deregulation and of EdF's dominating position (about 80 of the market). (J.S.)

The use and evolution of the CEA research reactors; Utilisation et evolution des reacteurs de recherche du C.E.A

Energy Technology Data Exchange (ETDEWEB)

Rossillon, F; Chauvez, C [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

1964-07-01

organic liquids under irradiation. The equipments of Melusine are now being modernized. Siloe, another swimming-pool reactor, has been operating at 15 MW since the end of 1963. The performances achieved constitute a considerable progress in the field of swimming-pool reactors, since the fluxes obtained with Siloe are in the same order of magnitude than those which needed till now a tank type structure, whose numerous disadvantages in the fitting of experiments are well known. Siloe will be used mostly in the study of structural materials, graphites, refractory fissile materials, and for solid state physics. The reactor Pegase, in service in the Cadarache Nuclear Centre since 1963, is intended solely for testing full-scale fuel elements of EDF and EL 4 types. The current programme, for the eight loops of the reactor, covers the elements for the reactors EDF 2, EDF 3 and EL 4. New loops are in the course of being studied for the fuel elements of the EDF 4 and EDF 5 reactors. The general line of the CEA programmes has shown up the considerable need for fast neutron irradiations. The reactor Osiris which is in the course of being constructed will serve to complement the CEA's equipment in this field and at the same time fill the gap which will be left in the near future in the Centre de Saclay by the closing down of EL 2. Osiris is a light water reactor whose special structure will allow it to function at 50 MW without the disadvantages usually associated with the presence of a heavy waterproof tank. This reactor, which should be put into service in 1966, is mainly intended for the investigation of structural materials, graphite and refractory fuels; it will also serve to increase the production of high specific activity isotopes, and to develop activation analysis techniques. (authors) [French] Les auteurs examinent successivement les differents reacteurs de recherche en service dans les Centres du Commissariat a l'Energie Atomique. Ils retracent brievement l'histoire de ces

EDF Contribution to the Mochovce completion and safety upgrading project

International Nuclear Information System (INIS)

Norvez, G.

1997-01-01

The challenge that SE a.s. took up in April 1996 to start Mochovce units 1 and 2 within a very demanding time frame and in satisfactory conditions is on the way to being wined. EMO managed to put in place an organisation able to ensure the continuity of the design and construction works and to integrate the requirements of modern safety. EDF is proud and happy to contribute to this effort by making available its expertise and experience in building and operating nuclear power plants. The success of Mochovce will not only contribute to the Slovak electricity needs coverage, but will be the first demonstration of a soviet design nuclear power plant brought to international safety standards. (author)

EDF EPR project: operating principles validation and human factor engineering program

International Nuclear Information System (INIS)

Lefebvre, B.; Berard, E.; Arpino, J.-M.

2005-01-01

This article describes the specificities of the operating principles chosen by EDF for the EPR project as a result of an extensive Human Factor Engineering program successfully implemented in an industrial project context. The design process and its achievements benefit of the EDF experience feedback not only in term of NPP operation - including the fully computerized control room of the N4-serie - but also in term of NPP designer. The elements exposed hereafter correspond to the basic design phase of EPR HMI which has been completed and successfully validated by the end of 2003. The article aims to remind the context of the project which basically consists in designing a modern and efficient HMI taking into account the operating needs while relying on proven and reliable technologies. The Human Factor Engineering program implemented merges these both aspects by : 1) being fully integrated within the project activities and scheduling; 2) efficiently taking into account the users needs as well as the feasibility constraints by relying on a multidisciplinary design team including HF specialists, I and C specialists, Process specialists and experienced operator representatives. The resulting design process makes a wide use of experience feedback and experienced operator knowledge to complete largely the existing standards for providing a fully useable and successful design method in an industrial context. The article underlines the design process highlights that largely contribute to the successful implementation of a Human Factor Engineering program for EPR. (authors)

EPR by Areva. EPR the 1600+ MWe reactor

Energy Technology Data Exchange (ETDEWEB)

NONE

2008-07-01

This brochure presents the GEN III+ EPR reactor designed by the Areva and Siemens consortium. The EPR reactor is a direct descendent of the well-proven N4 and KONVOI reactors, the most modern reactors in France and Germany. The EPR was designed by teams from KWU/Siemens and Framatome, EDF in France and the major German utilities, working in collaboration with both French and German safety authorities. The EPR integrates the results of decades of R and D programs, in particular those performed by the CEA (French Atomic Energy Commission) and the Karlsruhe Research Center in Germany. The EPR benefits from the experience of several thousand reactor-years of operation of pressurized water reactor technology. This experience has put 87 AREVA PWRs online throughout the world. Innovative Features: - An outer shell covering the reactor building, the spent fuel building and two of the four safeguard buildings provides protection against large commercial or military aircraft crash. - A heavy neutron reflector that surrounds the reactor core lowers uranium consumption. - An axial economizer inside the steam generator allows a high level of steam pressure and therefore high plant efficiency. - A core catcher allows passive collection and retention of the molten core should the reactor vessel fail in the highly unlikely event of a core melt. - A digital technology and a fully computerized control room with an operator friendly man-machine interface improve the reactor protection system.

EPR by Areva. EPR the 1600+ MWe reactor

International Nuclear Information System (INIS)

2008-01-01

This brochure presents the GEN III+ EPR reactor designed by the Areva and Siemens consortium. The EPR reactor is a direct descendent of the well-proven N4 and KONVOI reactors, the most modern reactors in France and Germany. The EPR was designed by teams from KWU/Siemens and Framatome, EDF in France and the major German utilities, working in collaboration with both French and German safety authorities. The EPR integrates the results of decades of R and D programs, in particular those performed by the CEA (French Atomic Energy Commission) and the Karlsruhe Research Center in Germany. The EPR benefits from the experience of several thousand reactor-years of operation of pressurized water reactor technology. This experience has put 87 AREVA PWRs online throughout the world. Innovative Features: - An outer shell covering the reactor building, the spent fuel building and two of the four safeguard buildings provides protection against large commercial or military aircraft crash. - A heavy neutron reflector that surrounds the reactor core lowers uranium consumption. - An axial economizer inside the steam generator allows a high level of steam pressure and therefore high plant efficiency. - A core catcher allows passive collection and retention of the molten core should the reactor vessel fail in the highly unlikely event of a core melt. - A digital technology and a fully computerized control room with an operator friendly man-machine interface improve the reactor protection system

Corrosion of magnesium and some magnesium alloys in gas cooled reactors

International Nuclear Information System (INIS)

Caillat, R.; Darras, R.

1958-01-01

The results of corrosion tests on magnesium and some magnesium alloys (Mg-Zr and Mg-Zr-Zn) in moist air (like G1 reactor) and in CO 2 : (like G2, G3, EDF1 reactors) are reported. The maximum temperature for exposure of magnesium to moist air without any risk of corrosion is 350 deg. C. Indeed, the oxidation rate follows a linear law above 350 deg. C although it reaches a constant level and keeps on very low under 350 deg. C. However, as far as corrosion is concerned this temperature limit can be raised up to 500 deg. C if moist air is very slightly charged with fluorinated compounds. Under pressure of CO 2 , these three materials oxidate much more slowly even if 500 deg. C is reached. The higher is the temperature, the higher is the constant level of the weight increase and the quicker is reached this one. However, Mg-Zr alloy behaves quite better than pure magnesium and especially than Mg-Zr-Zn alloy. (author) [fr

Characteristics and economy of the European reactor of pressurized water (EPR)

International Nuclear Information System (INIS)

Ortiz V, J.; Ramirez S, J.R.; Palacios H, J.C.

2005-01-01

The high current costs of the fossil fuels, have propitiated that the industries of electric power generation in the world reconsider the nuclear option as medium of generation. In Europe, the more recently contracted nuclear power plant is that of Olkiluoto-III in Finland that waits it enters in operation at the end of 2009. The reactor that will be installed in this power plant will be a prototype of pressurized water reactor of the companies AREVA and EDF. In this work they are described the reactor EPR and the major components of the nuclear power plant as well as the main characteristics of safety and the flexibility of the operation of the EPR. The supposed costs reported in different sources of information are also described and calculated with information provided by the manufacturer company. (Author)

1996, a turning point in the evolution of the EDF with good financial results

International Nuclear Information System (INIS)

1997-03-01

This conference held on March 1997 presents the financial results obtained in 1996 by French Electricity Company EDF (Electricite de France). This year represented a turning point because essential landmarks were established in 1996. An european directive has been adopted in 1996 defining the framework in which european electricity market will function as well as the rules for its opening to competition. Discussions with the trade unions were conducted at the beginning of 1997 and a social agreement aiming at the amelioration of services and hiring of 11,000 to 15,000 young people in the next three years. Finally, a new contract of enterprise with the state has been discussed and approved in March 5, 1997, which redefined the place and the role of EDF in the French economy, in the new stage of electricity market started by the opening to competition. The document contains the following 8 chapters: 1. Financial results and enterprise management; 2. Institutional frame and the relation with the state; 3. Development in France; 4. International development; 5. Alliances, partnerships and cooperation; 6. Management, social and human resources; 7. Environment; 8. Technical results

The safety of French pressurised water reactors: a regulator's perspective

International Nuclear Information System (INIS)

Lacoste, A.-C.

1993-01-01

France has invested heavily in nuclear technology and is today, arguably, the dominant player in the industry: in EdF we have a utility operating over 50 reactors; in Cogema we have a company operating in every sector of the fuel cycle industry; and in Framatome, perhaps the major nuclear reactor constructor in the world. As wedded as the country is to nuclear energy, France has to be aware of any potentially harmful developments - politically, socially and industrially. Neither can the international arena be neglected, where events can have a profound effect on France's worldwide interests. The following articles demonstrate how much energy and ingenuity France is devoting to resolving the many critical issues facing its nuclear industry, including safety, economics and waste disposal. (Author)

Management of ageing and obsolescence of electronic equipments used by EDF

International Nuclear Information System (INIS)

Grellier, J.M.; Oddi, M.; Simon, G.

2006-01-01

The life time of control system is today a great stake for industries which need a high reliability level during a much longer period of time than the usual life time of electronic equipments. Electronic technologies are mainly drawn by performance and miniaturization objectives letting apart the risk of ageing, indeed. Industrial users has therefore to cope with two main phenomena: the commercial obsolescence of electronic cards and the physical ageing of components. In the recent past years, Electricite De France has developed a deep knowledge of these phenomena and has elaborated a method to reduce the associated financial and technical risks. This method is used, partially or totally, in different EDF projects: the assessment of the ageing level of the control systems in EDF nuclear power plants, the elaboration of preventive maintenance actions to enhance the life time of protection relays in the French very high voltage electrical network, and the construction of a renovation plan for the control systems of the medium voltage electrical network in France. (authors)

Fessenheim 1, 1989

International Nuclear Information System (INIS)

Tarby, S.; Naudet, R.; Montane, C.; Gras, P.

1990-01-01

10 years after the preservice inspection in 1979, French legislation required the Fessenheim 1 900 MW reactor unit to undergo specific inspections necessitating a long-duration shut-down. EDF, the French Electricity Board, decided to take advantage of the shut-down to make major improvements to safety, fire detection and fire-fighting systems. Fessenheim 1 was shut down on April 7th 1989 and reconnected to the grid on October 14th in the same year. The overall operation was brought to a successful conclusion. This paper reviews the objectives and preparatives for the operation, describes the key phases and summarizes the main benefits

Development of RCM methodology and tools for EDF nuclear power plants

International Nuclear Information System (INIS)

Jacquot, J.P.; Bouchet, J.L.; Despujols, A.; Dewailly, J.; Martin-Mattei, C.

1992-06-01

This paper outlines the development of Reliability-Centered Maintenance procedures in the nuclear power industry. It presents the pilot study undertaken by EDF in the overall framework of its 'OMF' (RCM) project, as well as the potential for further improving and enriching analytical methods. Lastly, it gives the prospects for the future design of an 'OMF' workstation

EPR (European Pressurized water Reactor) The advanced nuclear reactor

International Nuclear Information System (INIS)

2004-01-01

Nuclear energy, which provides a steady supply of electricity at low cost, has its rightful place in the energy mix of the 21. century, which puts the emphasis on sustainable development. The EPR is the only 3. generation reactor under construction today. It is an evolutionary reactor that represents a new generation of pressurized water reactors with no break in the technology used for the most recent models. The EPR was developed by Framatome and Siemens, whose nuclear activities were combined in January 2001 to form Framatome ANP, a subsidiary of AREVA and Siemens. EDF and the major German electricity companies played an active part in the project. The safety authorities of the two countries joined forces to bring their respective safety standards into line and draw up joint design rules for the new reactor. The project had three objectives: meet the requirements of European utilities, comply with the safety standards laid down by the French safety authority for future pressurized water reactors, in concert with its German counterpart, and make nuclear energy even more competitive than energy generated using fossil fuels. The EPR can guarantee a safe, inexpensive electricity supply, without adding to the greenhouse effect. It meets the requirements of the safety authorities and lives up to the expectations of electricity utilities. This document presents the main characteristics of the EPR, and in particular the additional measures to prevent the occurrence of events likely to damage the core, the leak-tight containment, the measures to reduce the exposure of operating and maintenance personnel, the solutions for an even greater protection of the environment. The foreseen development of the EPR in France and abroad (Finland, China, the United States) is summarized

Radiation hardening commercial off-the-shelf erbium doped fibers by optimal photo-annealing source

Science.gov (United States)

Peng, Tz-Shiuan; Liu, Ren-Young; Lin, Yen-Chih; Mao, Ming-Hua; Wang, Lon A.

2017-09-01

Erbium doped fibers (EDFs) based devices are widely employed in space for optical communication [1], remote sensing [2], and navigation applications, e.g. interferometric fiber optic gyroscope (IFOG). However, the EDF suffers severely radiation induced attenuation (RIA) in radiation environments, e.g. space applications and nuclear reactors [3].

The electric comfort in social housing. EDF is going on. Agreements with concrete results; Le confort electrique en logement social. EDF avance. Des engagements aux resultats concrets

Energy Technology Data Exchange (ETDEWEB)

NONE

1999-11-01

This document deals the wrap-up of the agreement signed between EDF and the HLM Union, in 1997, concerning the quality of the electric heating and warm water in social housing. The convention is described and technical solutions are discussed. The relations with the tenants and the mission of advice are also presented. (A.L.B.)

The story of the European fast reactor cooperation

International Nuclear Information System (INIS)

Marth, W.

1993-12-01

This report is a condensed history of European cooperation in the large breeder power plants with powers in excess of 1000 MWe. The beginning, in 1973, was marked by the so-called Utilities' Convention signed by EdF, RWE, and ENEL on the construction of Superphenix and SNR 2. In 1977, cooperation began among the reactor vendors and R and D organizations in France, Germany and Italy as well as Belgium and the Netherlands. After the British had joined in 1984, planning for the European Fast Reactor, EFR, was started in 1988. The conceptual design phase of the 1500 MWe breeder power plant covered a period of five years and was concluded with an economic assessment and a technical safety analysis of EFR in 1983. A number of ongoing studies are being conducted within a specific EFR program. (orig.) [de

Radiation protection issues for EPR reactor

International Nuclear Information System (INIS)

Miniere, D.; Le Guen, B.; Beneteau, Y.; Le Guen, B.

2008-01-01

As part of the EPR (European Pressurized Reactor) project being deployed at Flamanville, EDF has pro actively made the decision to focus on radiation protection Radiation Protection aspects right from the start of the design phase, as it has done with nuclear safety. The approach adopted for managing Radiation Protection-significant activities has been to include all involved stakeholders - designers, licensee and contractor companies - in the three successive phases, starting with a survey among workers and designers, followed by a proposal review, and finally ending with the decision-making phase entrusted to an ALARA committee. The Radiation Protection target set by EDF for this new reactor is to engage in an effort of continuous improvement and optimisation, through benchmarking with the best performing plants of the fleet. The collective dose target is currently set at 0.35 Man Sv/year per unit. In addition to other aspects, efforts will focus on shortening the duration of the highest-dose jobs, with a new challenge being set for work performed in the reactor building during normal operations, the aim being to improve plant availability. The plan is for work to be performed 7 days prior to shutting down the reactor and 3 days afterwards, in order to make logistical arrangements for forthcoming jobs. Without this reduction, the estimated drop is currently 4.5% of annual dose. For this purpose, two areas have been set up in the E.P.R.'s reactor building: one no-go area for containing leaks from the primary circuit, and one accessible area for normal operations, separated from the no-go area by purpose-built ventilation equipment and facilities. To offer protection against radioactive flux (neutrons and high energy), Radiation Protection studies have resulted in the installation of a concrete floor and of nuclear shielding at the outlets of primary circuit pipes. Steam generator bunkers and pumps have also been reinforced. All these measures will ensure that the

The management of the radioactive waste generated by the EDF nuclear power plants in service

International Nuclear Information System (INIS)

Lantes, B.; Beguin, St.

2011-01-01

From the very beginning of France's nuclear power programme, EDF has developed industrial-scale management of the waste it produces, which has constantly progressed in line with changes in the regulations and the available technology. This management process, improved thanks to feedback and experience, ensures that any risk of exposure, at every stage, from production to final disposal, is controlled. The guidelines adopted by EDF for sustainable management of its waste are as follows: -) reduce the quantity of waste, from the production stage and then through recycling and reprocessing; -) sort waste according to its nature and activity level, so that it can be processed and packaged appropriately and the appropriate long-term management solution implemented; -) package waste as soon as it is produced to prevent any risk of dispersion; -) store waste, pending decay or the availability of an appropriate disposal solution; -) transport and place waste in repositories, keeping it away from Man and the environment by means of engineered or natural barriers for as long as required for the radioactivity to decay to an acceptable level. Regarding short-lived waste produced during operating and maintenance activities at power plants in service, EDF currently implements fully-integrated industrial management solutions which are constantly being optimised in conjunction with its industrial partners. (authors)

Precursor incident program at EDF

International Nuclear Information System (INIS)

Fourest, B.; Maliverney, B.; Rozenholc, M.; Piovesan, C.

1998-01-01

The precursor program was started by EDF in 1994, after an investigation of the US NRC's Accident Sequence Precursor Program. Since then, reported operational events identified as Safety Outstanding Events have been analyzed whenever possible using probabilistic methods based on PSAs. Analysis provides an estimate of the remaining protection against core damage at the time the incident occurred. Measuring the incidents' severity enables to detect incidents important regarding safety. Moreover, the most efficient feedback actions can be derived from the main accident sequences identified through the analysis. Therefore, incident probabilistic analysis provides a way to assess priorities in terms of treatment and resource allocation, and so, to implement countermeasures preventing further occurrence and development of the most significant incidents. As some incidents cannot be analyzed using this method, probabilistic analysis can only be one among the methods used to assess the nuclear power plants' safety level. Nevertheless, it provides an interesting complement to classical methods of deterministic studies. (author)

A computer - aided system for the the E.D.F. 1400 MW. Nuclear power plants control

International Nuclear Information System (INIS)

Beltranda, G.; Philipps, C.

1988-01-01

The future E.D.F. 1400 MW nuclear power plants (due to be commissioned in 1991 at CHOOZ) are provided with a control and instrumentation system including the following levels: - sensors and actuators (LEVEL 0): this is the interface of the elementary acquisition and control signals; - the programmable logical and numerical controllers (LEVEL 1) for the logical control sequences and analog adjustment sequences for the whole equipment of the facilities; - the control room (LEVEL 2) including the computer-aided operation system as well as the wall mimic diagram and the auxiliary panel directly connected to the controllers. This is the processing and control conversational level; - the maintenance and site computer-aided systems (LEVEL 3). This paper aims at describing the computer-aided operation system (called KIC N4), its main functions, its architecture and the solutions retained as regards its softwares and the high-quality of data required. The achievement of this system has been entrusted by EDF to the SEMA. METRA/CIMSA-SINTRA grouping, among which SEMA.METRA is the leading company

Radiation protection at new reactors

International Nuclear Information System (INIS)

Brissaud, A.

2000-01-01

The theoretical knowledge and the feedback of operating experience concerning radiations in reactors is now considerable. It is available to the designer in the form of predictive softwares and data bases. Thus, it is possible to include the radiation protection component throughout all the design process. In France, the existing reactors have not been designed with quantified radiation protection targets, although considerable efforts have been made to reduce sources of radiation illustrated by the decrease of the average dose rates (typically a factor 5 between the first 900 MWe and the last 1300 MWe units). The EDF ALARA PROJECT has demonstrated that good practises, radiation protection awareness, careful work organization had a strong impact on operation and maintenance work volume. A decrease of the average collective dose by a factor 2 has been achieved without noticeable modifications of the units. In the case of new nuclear facilities projects (reactor, intermediate storage facility,...), or special operations (such as steam generator replacement), quantified radiation protection targets are included in terms of collective and average individual doses within the frame of a general optimization scheme. The target values by themselves are less important than the application of an optimization process throughout the design. This is because the optimization process requires to address all the components of the dose, particularly the work volume for operation and maintenance. A careful study of this parameter contributes to the economy of the project (suppression of unecessary tasks, time-saving ergonomy of work sites). This optimization process is currently applied to the design of the EPR. General radiation protection provisions have been addressed during the basic design phase by applying general rules aiming at the reduction of sources and dose rates. The basic design optimization phase has mainly dealt with the possibility to access the containment at full

Material control and accountancy at EDF PWR plants

International Nuclear Information System (INIS)

de Cormis, F.

1991-01-01

The paper describes the comprehensive system which is developed and implemented at Electricite de France to provide a single reliable nuclear material control and accounting system for all nuclear plants. This software aims at several objectives among which are: the control and the accountancy of nuclear material at the plant, the optimization of the consistency of data by minimizing the possibility of transcription errors, the fulfillment of the statutory requirements by automatic transfer of reports to national and international safeguards authorities, the servicing of other EDF users of nuclear material data for technical or commercial purposes

Cooperation between regional fire brigades and EDF's power plants

International Nuclear Information System (INIS)

Gaudin, B.; Pigeon, M.

2000-01-01

An emergency plan has been worked out at each nuclear power plant. This plan involves public authorities, regional fire brigades, hospitals, and EDF's own emergency means. This organization implies that in case of emergency both outside help and intern means have to cooperate efficiently on the site. In order to clarify roles and order hierarchy, common intervention protocols have been written and tested. Joint exercises involving outside help and intern means are regularly organized to test the emergency organization and train the staff. (A.C.)

Franco-German nuclear cooperation: from the 'common product' to the first European pressurized water reactor

International Nuclear Information System (INIS)

Vignon, D.

1999-01-01

It has now been 10 years since Framatome and Siemens decided to collaborate on the design and sales of an advanced nuclear power plant (NPP) model based on pressurized water reactor (PWR) technology. Originally called the 'common product', this model was renamed the European pressurized water reactor when Electricite de France (EDF) and the German electric utilities joined this cooperative development effort in 1992. Since the beginning, this cooperation has been formalized in the framework of an agreement that led to the founding of a joint and equally owned subsidiary, Nucler Power International (NPI), which is reponsible for leading the development of the new model and later handling its export sales

Training courses at VR-1 reactor

International Nuclear Information System (INIS)

Sklenka, L.; Kropik, M.

2006-01-01

This paper describes one of the main purposes of the VR-1 training reactor utilization - i.e. extensive educational program. The educational program is intended for the training of university students and selected nuclear power plant personnel. The training courses provide them experience in reactor and neutron physics, dosimetry, nuclear safety and operation of nuclear facilities. At present, the training course participants can go through more than 20 standard experimental exercises; particular exercises for special training can be prepared. Approximately 200 university students become familiar with the reactor (lectures, experiments, experimental and diploma works, etc.) every year. About 12 different faculties from Czech universities use the reactor. International co-operation with European universities in Germany, Hungary, Austria, Slovakia, Holland and UK is frequent. The VR-1 reactor takes also part in Eugene Wigner Course on Reactor Physics Experiments in the framework of European Nuclear Educational Network (ENEN) association. Recently, training courses for Bulgarian research reactor specialists supported by IAEA were carried out. An attractive program including demonstration of reactor operation is prepared also for high school students. Every year, more than 1500 high school students come to visit the reactor, as do many foreigner visitors. (author)

Development of RCM methodology and tools for EDF nuclear power plants

International Nuclear Information System (INIS)

Jacquot, J.P.; Bouchet, J.L.; Despujols, A.; Dewailly, J.; Martin-Mattei, C.

1995-01-01

In 1990, EDF launched a Reliability-Centered Maintenance project for its nuclear plants. This 'OMF' project aims at developing methods and tools for analysis and in the first phase, applying these to one initial system (the pilot study). The results of the pilot study have confirmed the advantages of the 'OMF' analytical method: the prospects for the approach on an industrial scale are extremely promising. It should be noted that the precision of our 'OMF' analysis is not doubt superior to that common in other industrial domains (MSG/RCM analysis). The particular approach implies analysis of systems and components and, most importantly, integration of operation feedback, with a view to developing a rigorous maintenance program which can constantly be updated. In addition to the defining and implementing the method, the review of designing software aids has begun. The pilot study clearly pointed up the need for such aids in handling the necessary volume of information and assisting experts in their analysis. The EDF 'OMF' workstation (and its environment) will be used not only in preparing the 'initial' maintenance program but also in updating it during the 'living' program phase. (author)

Development of RCM methodology and tools for EDF nuclear power plants

Energy Technology Data Exchange (ETDEWEB)

Jacquot, J.P.; Bouchet, J.L.; Despujols, A.; Dewailly, J.; Martin-Mattei, C. [Electricite de France, 78 - Chatou (France)

1995-12-31

In 1990, EDF launched a Reliability-Centered Maintenance project for its nuclear plants. This `OMF` project aims at developing methods and tools for analysis and in the first phase, applying these to one initial system (the pilot study). The results of the pilot study have confirmed the advantages of the `OMF` analytical method: the prospects for the approach on an industrial scale are extremely promising. It should be noted that the precision of our `OMF` analysis is not doubt superior to that common in other industrial domains (MSG/RCM analysis). The particular approach implies analysis of systems and components and, most importantly, integration of operation feedback, with a view to developing a rigorous maintenance program which can constantly be updated. In addition to the defining and implementing the method, the review of designing software aids has begun. The pilot study clearly pointed up the need for such aids in handling the necessary volume of information and assisting experts in their analysis. The EDF `OMF` workstation (and its environment) will be used not only in preparing the `initial` maintenance program but also in updating it during the `living` program phase. (author) 4 refs.

Current status of the Thai Research Reactor (TRR-1/M1)

International Nuclear Information System (INIS)

Chueinta, Siripone; Julanan, Mongkol; Charncanchee, Decharchai

2006-01-01

The first Thai Research Reactor, TRR-1 went critical on 27 October 1962 at the maximum power of 1 MW. It was located at Office of Atoms for Peace (OAP) in Bangkok. Since then, TRR-1 was continuously operated and eventually shut down in 1975. Plate type, high-enriched uranium (HEU) and U 3 O 8 A1 cladding were used as the reactor fuel. Light water was used as moderator and coolant as well. In 1975, because of the problem from fuel supplier and also to supporting the Treaty of Non Proliferation of Nuclear Weapon or NPT, TRR-1 was shut down for modification. The reactor core and control system were disassembled and replaced by TRIGA Mark III. A new core was a hexagonal core shape designed by General Atomics (GA). Afterwards, TRR-1 was officially renamed to the Thai Research Reactor-1/Modification 1 (TRR-1/M1). TRR-1/M1 is a multipurpose swimming pool type reactor with nominal power of 2 MW. The TRR-1/M1 uses uranium enriched at 20% in U-235 (LEU) and ZrH alloy as fuel. Light water is also used as coolant and moderator. At present, the reactor is operating with core No.14. The reactor has been serving for various kinds of utilization namely, radioisotope production, neutron activation analysis, beam experiments and reactor physics experiments. (author)

The 1500 MW fast breeder reactor the double envelope-vessel anchored in concrete

International Nuclear Information System (INIS)

Bolvin, M.

1981-01-01

This paper givers an account of EDF investigations to reduce the investment costs of the 1500 MW Fast Reactor (RNR 1500) without prejudice to the safety requirements. It deals with the double envelope-vessel, designed to minimize radiation consequences in the event of accidental leakage in the main vessel. In the Fast Reactors in operation (PHOENIX), under construction (CRYS-MALVILLE), and under project (NR 1500), the double envelope-steel vessel hangs down from the upper part of the reactor block, its weight being approximately 300 t. In the new design, the vessel is fixed into the concrete which supports the main vessel, by means of steel anchors. A thermal insulation isolates it from the main vessel. The installation of coils in the concrete, next to the lining, allows for water circulation to cool the concrete. (orig./GL)

EAACI/GA(2)LEN/EDF/WAO guideline: management of urticaria.

Science.gov (United States)

Zuberbier, T; Asero, R; Bindslev-Jensen, C; Walter Canonica, G; Church, M K; Giménez-Arnau, A M; Grattan, C E H; Kapp, A; Maurer, M; Merk, H F; Rogala, B; Saini, S; Sánchez-Borges, M; Schmid-Grendelmeier, P; Schünemann, H; Staubach, P; Vena, G A; Wedi, B

2009-10-01

This guideline, together with its sister guideline on the classification of urticaria (Zuberbier T, Asero R, Bindslev-Jensen C, Canonica GW, Church MK, Giménez-Arnau AM et al. EAACI/GA(2)LEN/EDF/WAO Guideline: definition, classification and diagnosis of urticaria. Allergy 2009;64: 1417-1426), is the result of a consensus reached during a panel discussion at the Third International Consensus Meeting on Urticaria, Urticaria 2008, a joint initiative of the Dermatology Section of the European Academy of Allergology and Clinical Immunology (EAACI), the EU-funded network of excellence, the Global Allergy and Asthma European Network (GA(2)LEN), the European Dermatology Forum (EDF) and the World Allergy Organization (WAO). As members of the panel, the authors had prepared their suggestions regarding management of urticaria before the meeting. The draft of the guideline took into account all available evidence in the literature (including Medline and Embase searches and hand searches of abstracts at international allergy congresses in 2004-2008) and was based on the existing consensus reports of the first and the second symposia in 2000 and 2004. These suggestions were then discussed in detail among the panel members and with the over 200 international specialists of the meeting to achieve a consensus using a simple voting system where appropriate. Urticaria has a profound impact on the quality of life and effective treatment is, therefore, required. The recommended first line treatment is new generation, nonsedating H(1)-antihistamines. If standard dosing is not effective, increasing the dosage up to four-fold is recommended. For patients who do not respond to a four-fold increase in dosage of nonsedating H(1)-antihistamines, it is recommended that second-line therapies should be added to the antihistamine treatment. In the choice of second-line treatment, both their costs and risk/benefit profiles are most important to consider. Corticosteroids are not recommended for

Annual report on JEN-1 reactor; Informe periodico del Reactor JEN-1 correspondiente al ano 1971

Energy Technology Data Exchange (ETDEWEB)

Montes, J

1972-07-01

In the annual report on the JEN-1 reactor the main features of the reactor operations and maintenance are described. The reactor has been critical for 1831 hours, what means 65,8% of the total working time. Maintenance and pool water contamination have occupied the rest of the time. The maintenance schedule is shown in detail according to three subjects. The main failures and reactor scrams are also described. The daily maximum values of the water activity are given so as the activity of the air in the reactor hall. (Author)

EDF FARN (fast action force in case of nuclear accident) - Focus on radiation protection of workers

International Nuclear Information System (INIS)

Le Guen, Bernard

2014-01-01

Document available in abstract form only. As part of the operation of its nuclear power plants, EDF set up in the 80's an emergency response organisation together with the French public authorities aimed at managing the consequences, especially radiological of any events. This is based on the setting up of emergency plans involving both the operator and the public authorities, at local and national level, with both parties assessing the consequences of a radiological accident in the environment constantly enhanced as part of the continuous improvement process. As the Fukushima accident especially highlighted the relevance of having a response system available off site, this emergency response organisation has been strengthened both with equipment and human resources so as to be able to respond to major accidents further to external hazards. These resources have been designed to factor in a high level of radiological risk. The functions and responsibilities are clearly defined for any event occurring at a nuclear power plant. The operator shall be accountable for the actions to be taken on site concerning technical plant management, worker protection and rescue of casualties. The public authorities shall be accountable for all the measures to be taken off site, especially protection of the local population and environmental monitoring. The EDF emergency response organisation is based on enhanced equipment and human resources at site and corporate level supplemented with EDF corporate and non-EDF resources. The EDF emergency plan covers the situation where all the site units are affected. The decision to set up the nuclear rapid response taskforce was taken further to the Fukushima accident in 2011 and it has been operational since 2012. Integrated in the emergency response organisation, its main aim is to be capable of responding in less than 12 hours to reinstate water, electricity and air supply at the nuclear power plant where the accident has occurred. It is

The market of nuclear plant dismantling. The new EDF's strategy, process standardisation, robotization: which perspectives for the market by 2030?

International Nuclear Information System (INIS)

2017-09-01

Dismantling appears as the most promising activity in the nuclear sector due to ageing plants, to ambitious objectives of reduction of the nuclear share in the energy mix, or to high expertise of French companies in robotic and digital solutions for deconstruction in radioactive environments. However, the development of the dismantling market depends on EDF decisions: the extension of nuclear reactor lifetime postpones the development of this market. In this context, this study aims at giving an anticipated view of the plant dismantling market by 2030, at deciphering growth levers for the sector actors, and at understanding the sector operation and the business model of operators. Thus, the report presents the main components of the market (key figures, dismantling types, dismantling steps, sector ecosystem, barriers to enter the market, costs, contractual relationships), proposes an analysis of the market and of its perspectives (situation in France, and at the world level, predictive scenario for 2030), and discusses the development axes and demand evolutions (robotization and digitalisation, elaboration of standardised processes, management of wastes produced by nuclear dismantling, internationalisation of French actors). It also proposes an overview of actors in France, and identity sheets for commissioners (EDF, New Areva), contractors (Onet, Vinci, Engie), and other actors (Veolia, Assystem, Ortec, Cybernetix, Oreka Group). The last part proposes synthetic sheets for more than 110 companies of the sector (general information, management and financial performance data under the form of tables and figures) and comparative tables according to 5 key indicators. Data are presented for a period ranging from 2010 to 2016

Organization of the operating quality in EDF nuclear power stations

International Nuclear Information System (INIS)

Stolz, J.

1976-01-01

The organization of operating quality in EDF nuclear stations cover a number of planned and systematic actions of technical and management order carried on at station level and Nuclear Safety Department level. Priority is given to safety quality which has to remain the same during the whole life of the stations; the safety of a station depending from its designing, realization and starting up quality on one hand and from its operating methods on the other [fr

77 FR 41177 - Combined Notice of Filings #1

Science.gov (United States)

2012-07-12

.... Applicants: EDF Trading North America, LLC, EDF Industrial Power Services (IL), LLC, EDF Industrial Power Services (NY), LLC. Description: Updated Market Power Analysis for the Central Region of EDF Trading North...--Market Mitigation Measures for New Capacity Zones to be effective 9/1/2012. Filed Date: 6/29/12...

A fuzzy controller for the real time supervision of nuclear power reactors

International Nuclear Information System (INIS)

Si Fodil, M.; Guly, F.; Siarry, P.; Tyran, J.L.

2000-01-01

We describe the development of a real time fuzzy controller aimed at an adequate core axial power distribution inside a pressurized water reactor (PWR). The system has been implemented in simulation using the EDF model on Matlab-Simulink on a Sun workstation. Some experiments tests at different power levels have been performed: several low levels modeling falls in the network consumption and test modeling falls in the consumption followed by a recovery of the consumption. The results of all these experiments will be discussed. (orig.)

Measurement of the initial conversion ratio in AQUILON and EDF 2 reactors

International Nuclear Information System (INIS)

Bergeron, J.; Le Baud, P.; Sautiez, B.

1968-01-01

In natural uranium fuelled reactors, it is important to know the initial conversion ratio, i.e. the ratio of uranium 238 absorption to uranium 235 destruction. The separation of absorption products from fission products is a difficult feature in the measurement of the conversion ratio. A physical method was chosen, the γγ coincidence technique which uses the properties of the decay scheme of neptunium 239 and allows the neptunium activity to be separated from the fission product activity, with some corrections. Detectors of natural uranium are used. The accuracy obtained in the measurements is of the order of 2%. (authors) [fr

Integrating availability and maintenance objectives in plant design. EDF approach

International Nuclear Information System (INIS)

Degrave, Claude; Martin-Onraet, Michel

1995-01-01

Energy self sufficiency is a major strategic necessity for France. Regarding the fossil fuels power, competitiveness of nuclear energy is a key goal for Electricite de France. Accordingly, for future nuclear power plants to remain competitive, it is necessary to maintain the kWh production costs of the future units at a level close to those of the latest units under construction (N4 series), while raising the safety level. EDF therefore decided to implement an analytical and systematic process for study of the new projects to optimize the design by integration of the maintenance (durations, costs), availability and radiation exposure goals from the related operating experience. This approach, CIDEM (French acronym for Design Integrating Availability, operating Experience and Maintenance) aims at a single goal: to minimize the kWh production cost incorporating investment, operation and fuel costs, allowing for the operating experience from French and foreign units. The implementation of the CIDEM process constitutes for EDF a new approach to the study of the new Nuclear Power Plant projects. The competitivity of nuclear energy greatly depends on the success of such an approach. The studies conducted in the availability field have already highlighted a number of critical points and have made it possible to define the corresponding goal allocations and to establish a first series of structuring specifications for the project. (J.P.N.)

Annual report on JEN-1 reactor

International Nuclear Information System (INIS)

Montes, J.

1972-01-01

In the annual report on the JEN-1 reactor the main features of the reactor operations and maintenance are described. The reactor has been critical for 1831 hours, what means 65,8% of the total working time. Maintenance and pool water contamination have occupied the rest of the time. The maintenance schedule is shown in detail according to three subjects. The main failures and reactor scrams are also described. The daily maximum values of the water activity are given so as the activity of the air in the reactor hall. (Author)

Efficient Feasibility Analysis for Real-Time Systems with EDF Scheduling

OpenAIRE

Albers , Karsten; Slomka , Frank

2005-01-01

Submitted on behalf of EDAA (http://www.edaa.com/); International audience; This paper presents new fast exact feasibility tests for uniprocessor real-time systems using preemptive EDF scheduling. Task sets which are accepted by previously described sufficient tests will be evaluated in nearly the same time as with the old tests by the new algorithms. Many task sets are not accepted by the earlier tests despite them beeing feasible. These task sets will be evaluated by the new algorithms a lo...

'Nuclear safety: our absolute priority'. File 2014 of the EDF Group in response to the FTSE4Good criteria

International Nuclear Information System (INIS)

Maillart, H.

2014-01-01

After a brief presentation of the EDF Group activity, this report presents its different nuclear assets which belong to EDF SA, EDF Energy, CENG or TNPJVC (these companies are also briefly presented). The next part addresses and describes the various aspects related to safety and to radiation protection: the safety policy and its implementation within the group, incidents and events, unplanned outages, assessments of nuclear safety, risk analysis, preparation to emergency situations, adaptation to climate change, lessons learned from the Fukushima accident, public and workers exposure to radiations, site protection. The fourth part addresses issues related to wastes: general presentation, legal and regulatory context, policy, management of radioactive wastes, management of used fuels, dismantling and wastes. The next part addresses issues related to training: overview of human resources and training policy, implementation. The last part presents reporting actions and results

Opinion of the IRSN on the instruction on the continuation of the GPR assessment of the safety re-examination VD3-900 - Examination of the conclusive report of the safety re-examination of the nr 1 reactor of the Fessenheim plant after the third decennial inspection

International Nuclear Information System (INIS)

2011-02-01

This report first describes the context of the safety re-examination of the nr 1 reactor of the Fessenheim nuclear power station (CNPE) and assesses the generic aspects of this re-examination, assesses additional information transmitted by EDF and concerning these generic aspects (external and internal stresses, accidents and their radiological consequences, design of systems and civil engineering works), states recommendations on various topics and issues to be considered (internal explosions, probabilistic studies, severe accidents, confinement in post-accidental situation, behaviour of containment enclosures, and son on). It assesses the content of the conclusive report of the safety re-examination

UP1 decommissioning project: initial review of lessons learned

International Nuclear Information System (INIS)

Fontana, Ph.; Fraize, G.; Seurat, Ph.

2008-01-01

The very first French electricity-generating nuclear reactors (3 gas-graphite reactors operated between 1956 and 1984) and spent fuel reprocessing plant (UP1 and ancillary facilities operated from 1958 to 1997) were located at Marcoule, in southern France. These historic facilities, together with the research labs that contributed to the development and commissioning of the processes implemented, are being decontaminated and dismantled. Other facilities near these nuclear plants will also be shut down in the next few years: the Phenix fast breeder reactor, the Celestin reactors and other ancillary units. Because the UP1 reprocessing plant and its related facilities were used for both commercial and defense activities, a dedicated group comprising three state-owned or private companies (CEA, EdF and COGEMA) was set up as the contracting authority from 1996 to 2004. Today the CEA is the contracting authority at Marcoule and has replaced AREVA NC as the site nuclear operator. AREVA acts as prime contractor for both operation of the main facilities and engineering of the dismantling projects. (authors)

UP1 decommissioning project: initial review of lessons learned

Energy Technology Data Exchange (ETDEWEB)

Fontana, Ph.; Fraize, G. [CEA Valrho, Dir. de l' Energie Nucleaire (DEN/DPAD), 30 - Marcoule (France); Seurat, Ph. [AREVA NC, 75 - Paris (France)

2008-07-01

The very first French electricity-generating nuclear reactors (3 gas-graphite reactors operated between 1956 and 1984) and spent fuel reprocessing plant (UP1 and ancillary facilities operated from 1958 to 1997) were located at Marcoule, in southern France. These historic facilities, together with the research labs that contributed to the development and commissioning of the processes implemented, are being decontaminated and dismantled. Other facilities near these nuclear plants will also be shut down in the next few years: the Phenix fast breeder reactor, the Celestin reactors and other ancillary units. Because the UP1 reprocessing plant and its related facilities were used for both commercial and defense activities, a dedicated group comprising three state-owned or private companies (CEA, EdF and COGEMA) was set up as the contracting authority from 1996 to 2004. Today the CEA is the contracting authority at Marcoule and has replaced AREVA NC as the site nuclear operator. AREVA acts as prime contractor for both operation of the main facilities and engineering of the dismantling projects. (authors)

EDF field experience of 182 J-Groove welds on CRDMs and SG channel head nozzles

International Nuclear Information System (INIS)

Duisabeau, L.; Deforge, D.; Thebault, Y.; Stindel, M.; Lemaire, E.

2011-01-01

The Reactor Pressure Vessel Head (RPVH) replacement program, which began after a leak occurrence in a vessel head nozzle in Alloy 600 at Bugey Unit 3, was a unique opportunity to perform an extended inspection program on the welds from the decommissioned RPV heads. This paper presents the actual results of this program. More than 800 CRDM J groove welds from 18 decommissioned RPV heads were inspected by automatic dye penetrant testing. Detected indications were characterized by viewing tools specifically developed and in some specific cases, by destructive investigations in hot lab. Some welding defects were observed but no indication corresponding to stress corrosion cracking (SCC) was detected at the welds wet surface nor propagation from welding manufacturing defects, including the weld with the longest operating time on EDF power plants (170 000 h). Very few cases of SCC propagation from Alloy 600 to Alloy 182 are reported. One case of initiation at the weld root pass was observed. From design, the weld root pass (mechanically loaded) of CRDM (Control Rod Drive Mechanism) nozzles is not in contact with primary water and the cracking observed occurred after a through wall cracking of the Alloy 600 tube, enabling primary water to wet the root pass. Concerning the steam generator (SG) drain nozzle, the alloy 182 weld root is directly in contact with primary water. In June 2008, a primary water leakage was suspected on a steam generator bowl drain while conducting a bare metal visual examination during the plant's outage. Dye penetrant testing of the weld and metallographic replica were implemented during the 2008 and 2009 refuelling outages to confirm a leakage by SCC. Manufacturing reports analyses revealed that the drain nozzle weld was repaired and had not been stress relieved during manufacturing. EDF has decided to plug this nozzle and to enforce the maintenance policy for similar components with the same manufacturing specificity. Regarding national and

Safety operation of training reactor VR-1

International Nuclear Information System (INIS)

Matejka, K.

2001-01-01

There are three nuclear research reactors in the Czech Republic in operation now: light water reactor LVR-15, maximum reactor power 10 MW t , owner and operator Nuclear Research Institute Rez; light water zero power reactor LR-0, maximum reactor power 5 kW t , owner and operator Nuclear Research Institute Rez and training reactor VR-1 Sparrow, maximum reactor power 5 kW t , owner and operate Faculty of Nuclear Sciences and Physical Engineering, CTU in Prague. The training reactor VR-1 Vrabec 'Sparrow', operated at the Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, was started up on December 3, 1990. Particularly it is designed for training the students of Czech universities, preparing the experts for the Czech nuclear programme, as well as for certain research work, and for information programmes in the nuclear programme, as well as for certain research work, and for information programmes in sphere of using the nuclear energy (public relations). (author)

Fibre optic sensors in pressurized water reactor alternators

International Nuclear Information System (INIS)

Favennec, J.M.; Piguet, M.

1994-01-01

Measurement in the electrical engine environment (alternator, transformer...) is identified as one of the two main applications of fibre optic sensors within EDF; the other application niche is the monitoring of civil works (dams, containment building of nuclear reactors...). At the EDF Research and Development Division, temperature and vibration fibre optic sensors were evaluated by the Metrology Service, since their use is under consideration for alternator monitoring. For alternator stator thermal monitoring, the BERTIN company developed a fibre optic sensor network. The optic coding technique is based on broadband source spectral modulation; the sensors are interrogated sequentially by electronic commutation. For alternator stator vibration monitoring, a fibre optic accelerometer was developed in the frame of a manufacturers and universities consortium supported by the French Research and Technology Ministry. The accelerometer is of cantilever beam type and its networking is possible by chromatic multiplexing. The Metrology Service evaluated these temperature and vibration sensors in order to verify their metrological characteristics (bias error, hysteresis, repeatability, resolution, noise, amplitude linearity, response time, frequency response, etc.) and to test their behaviour in harsh alternator environmental conditions (pressure, vibrations and temperature). Ageing and accidental condition resistance tests were also carried out. Temperature sensor test results were very satisfactory. An eight-sensor BERTIN prototype was installed on the Tricastin 1 alternator during the september 1993 nuclear station periodic stop. On the contrary, the accelerometers presented deficient metrological characteristics (shorter span than foreseen, low repeatability...). They need some improvements and could not be installed on alternators. (authors). 5 refs., 8 figs

Summary of replies to the public consultation on the virtual power plants (VPP) system implemented by EDF

International Nuclear Information System (INIS)

2006-01-01

From 15 December 2005 to 13 January 2006, CRE organized a public consultation on the Virtual Power Plants (VPP) system implemented by EDF. The questions asked to the contributors concerned: their assessment of the effect of VPP on the French market during the period 2001-2005; their suggestions concerning the continuation or stopping of the current system, or concerning the setting up of a new system of energy or generation capacity release by EDF. Twenty three players in the French electricity market answered this consultation. The replies made by the various contributors to each question are very diversified. This document presents the summary of replies received, question by question. (A.L.B.)

Summary of replies to the public consultation on the virtual power plants (VPP) system implemented by EDF

Energy Technology Data Exchange (ETDEWEB)

NONE

2006-07-01

From 15 December 2005 to 13 January 2006, CRE organized a public consultation on the Virtual Power Plants (VPP) system implemented by EDF. The questions asked to the contributors concerned: their assessment of the effect of VPP on the French market during the period 2001-2005; their suggestions concerning the continuation or stopping of the current system, or concerning the setting up of a new system of energy or generation capacity release by EDF. Twenty three players in the French electricity market answered this consultation. The replies made by the various contributors to each question are very diversified. This document presents the summary of replies received, question by question. (A.L.B.)

EDF energy generation UK transport of irradiated fuel

Energy Technology Data Exchange (ETDEWEB)

James, R. [EDF Energy, London, (United Kingdom)

2015-07-01

This paper give an overview of irradiated fuel transport in the UK. It describes the design of irradiated fuel flask used by EDF Energy; operational experience and good practices learnt from over 50 years of irradiated fuel transport. The AGRs can store approximately 9 months generation of spent fuel, hence the ability to transport irradiated fuel is vital. Movements are by road to the nearest railhead, typically less than 2 miles and then by rail to Sellafield, up to 400 miles, for reprocessing or long term storage. Road and rail vehicles are covered. To date in the UK: over 30,000 Magnox flask journeys and over 15,000 AGR A2 flask journeys have been carried out.

Mobile means for the monitoring of atmospheric contamination in a reactor building

International Nuclear Information System (INIS)

Marques, S.; Lestang, M.

2009-01-01

After having evoked the context and challenges of contamination monitoring when exploiting nuclear reactors, the authors discuss the representativeness of the atmospheric contamination measurement as it depends on the different physicochemical forms of radionuclides present in the circuits. They indicate the different gaseous or aerosol radioactive elements which are monitored within EDF installations. They discuss the incorporation of monitoring means at the installation design level, briefly present the use of beacons inside and outside the reactor building. They describe how monitoring is organized on the basis of alert threshold adjustments: an investigation threshold and an evacuation threshold. They discuss the beacon (or sensor) selection and indicate recommendations for their implementation for optimization purposes. They indicate where these beacons are installed and evoke the experimentation of networked mobile beacons with data remote transmission

Extensive utilization of training reactor VR-1

International Nuclear Information System (INIS)

Matejka, Karel; Sklenka, Lubomir

2003-01-01

Full text: The training reactor VR-1 Vrabec ('Sparrow'), operated at the Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, was started up on December 3, 1990. Particularly, it is designed and operated for training of students from Czech universities, preparing of experts for the Czech nuclear programme, as well as for certain research and development work, and for information programmes in the sphere of non-military nuclear energy use (public relation). The VR-1 training reactor is a pool-type light-water reactor based on enriched uranium with maximum thermal power 1kWth and short time period up to 5kW th . The moderator of neutrons is light demineralized water (H 2 O) that is also used as a reflector, a biological shielding, and a coolant. Heat is removed from the core with natural convection. The reactor core contains 14 to 18 fuel assemblies IRT-3M, depending on the geometric arrangement and kind of experiments to be performed in the reactor. The core is accommodated in a cylindrical stainless steel vessel - pool, which is filled with water. UR-70 control rods serve the reactor control and safe shutdown. Training of the VR-1 reactor provides students with experience in reactor and neutron physics, dosimetry, nuclear safety, and nuclear installation operation. Students from technical universities and from natural sciences universities come to the reactor for training. Approximately 200 university students are introduced to the reactor (lectures, experiments, experimental and diploma works, etc.) every year. About 12 different faculties from Czech universities use the reactor. International co-operation with European universities in Germany, Hungary, Austria, Slovakia, Holland and UK is frequent. Practical Course on Reactor Physics in Framework of European Nuclear Engineering Network has been newly introduced. Currently, students can try out more than 20 experimental exercises. Further training courses have been included

EAACI/GA(2)LEN/EDF/WAO guideline: management of urticaria

DEFF Research Database (Denmark)

Zuberbier, T; Asero, R; Bindslev-Jensen, C

2009-01-01

and Asthma European Network (GA(2)LEN), the European Dermatology Forum (EDF) and the World Allergy Organization (WAO). As members of the panel, the authors had prepared their suggestions regarding management of urticaria before the meeting. The draft of the guideline took into account all available evidence....... In the choice of second-line treatment, both their costs and risk/benefit profiles are most important to consider. Corticosteroids are not recommended for long-term treatment due to their unavoidable severe adverse effects. This guideline was acknowledged and accepted by the European Union of Medical...

Analysis of thickness measurements on secondary lines in EDF PWRs to evaluate the accuracy of the flow accelerated corrosion monitoring software: BRT-CICERO

Energy Technology Data Exchange (ETDEWEB)

Persoz, Matthieu [CAP AMPERE, 1 place Pleyel, 93282 Saint Denis (France); Bouvier, Jean-Baptiste [CNEN, 165-173 av. Pierre Brossolette, 92542 Montrouge Cedex (France); Ardillon, Emmanuel [R and D Division, EDF, 6 quai Watier, 78401 Chatou Cedex (France); Trevin, Stephane [SEPTEN, 12 - 14 av. Dutrievoz, 69628 Villeurbanne Cedex (France)

2006-09-15

The surveillance of Flow Accelerated Corrosion (FAC) on secondary pipes is a major concern for every nuclear power plant operator. After the Surry accident in 1986, EDF launched a computer code development program to monitor this degradation phenomenon. A chemical corrosion model has been developed, based on laboratory test results obtained by EDF R and D since the late 70's. This model enables to compute the wall thickness loss of pipes submitted to FAC, with respect to the thermo-hydraulic conditions, the fluid chemistry, the material chromium content, the pipe geometry and the cycles duration. The computer code, called BRT-CICERO(TM), has first been tested on a few plants in the years 1993-1995. Most of the EDF NPPs began to use it afterwards. In 2001, after the discovery of a severe damage on a 4'' x 6'' reducer at Fessenheim unit 2, that was correctly predicted by BRT-CICERO(TM), the EDF corporate level made its use mandatory for each of its 58 Pressurized Water Reactors (PWR). Several years of operation and experience feedback have enabled to carry out different improvements on the BRT-CICERO(TM) software. Since 2003, EDF NPPs are using the 2.2 version. At the beginning of year 2005, the 58 BRT-CICERO(TM) input-databases were gathered and structured in a form such that statistical treatments could be made. A very great number of data were collected from BRT-CICERO(TM) input-databases by a specific modification of a tool integrated into the software. It appears that a statistical approach could allow an effective analysis of these data. The first goal of this study was to give the degree of confidence in the application and this approach appeared effective. The second goal was to prove that a part of the conservatism is due to the FAC kinetics calculation algorithm implemented in BRT-CICERO(TM). The investigation of the relative difference between measured and calculated thicknesses shows that a part of the conservatism should be due

Analysis of thickness measurements on secondary lines in EDF PWRs to evaluate the accuracy of the flow accelerated corrosion monitoring software: BRT-CICERO

International Nuclear Information System (INIS)

Persoz, Matthieu; Bouvier, Jean-Baptiste; Ardillon, Emmanuel; Trevin, Stephane

2006-09-01

The surveillance of Flow Accelerated Corrosion (FAC) on secondary pipes is a major concern for every nuclear power plant operator. After the Surry accident in 1986, EDF launched a computer code development program to monitor this degradation phenomenon. A chemical corrosion model has been developed, based on laboratory test results obtained by EDF R and D since the late 70's. This model enables to compute the wall thickness loss of pipes submitted to FAC, with respect to the thermo-hydraulic conditions, the fluid chemistry, the material chromium content, the pipe geometry and the cycles duration. The computer code, called BRT-CICERO(TM), has first been tested on a few plants in the years 1993-1995. Most of the EDF NPPs began to use it afterwards. In 2001, after the discovery of a severe damage on a 4'' x 6'' reducer at Fessenheim unit 2, that was correctly predicted by BRT-CICERO(TM), the EDF corporate level made its use mandatory for each of its 58 Pressurized Water Reactors (PWR). Several years of operation and experience feedback have enabled to carry out different improvements on the BRT-CICERO(TM) software. Since 2003, EDF NPPs are using the 2.2 version. At the beginning of year 2005, the 58 BRT-CICERO(TM) input-databases were gathered and structured in a form such that statistical treatments could be made. A very great number of data were collected from BRT-CICERO(TM) input-databases by a specific modification of a tool integrated into the software. It appears that a statistical approach could allow an effective analysis of these data. The first goal of this study was to give the degree of confidence in the application and this approach appeared effective. The second goal was to prove that a part of the conservatism is due to the FAC kinetics calculation algorithm implemented in BRT-CICERO(TM). The investigation of the relative difference between measured and calculated thicknesses shows that a part of the conservatism should be due to the FAC kinetics

French experience in design, operation and revamping of nuclear research reactors, in support of advanced reactors development

International Nuclear Information System (INIS)

Barre, B.; Bergeonneau, P.; Merchie, F.; Minguet, J.L.; Rousselle, P.

1996-01-01

The French nuclear program is strongly based on the R and D work performed in the CEA nuclear research centers and particularly on the various experimental programs carried out in its research reactors in the frame of cooperative actions between the Commissariat a l'Energie Atomique (CEA), Framatome and Electricite de France (EDF). Several types of research reactors have been built by Technicatome and CEA to carry out successfully this considerable R and D work on fuels and materials, among them the socalled Materials Testing Reactors (MTR) SILOE (35 MW) and OSIRIS (70 MW) which are indeed very well suited for technological irradiations. Their simple and flexible design and the large irradiation space available around the core, the SILOE and OSIRIS reactors can be shared by several types of applications such as fuel and material testings for nuclear power plants, radioisotopes production, silicon doping and fundamental research. It is worthwhile recalling that Technicatome and CEA have also built research reactors fully dedicated to safety experimental studies, such as the CABRI, SCARABEE and PHEBUS reactors at Cadarache, and others dedicated to fundamental research such as ORPHEE (14 MW) and the Reacteur a Haut Flux -High Flux Reactor- (RHF 57 MW). This paper will present some of the most significant conceptual and design features of all these reactors as well as the main improvements brought to most of them in the last years. Based on this wide experience, CEA and Technicatome have specially designed for export a new multipurpose research reactor named SIRIUS, with two versions depending on the utilization spectrum and the power range (5 MW to 30 MW). At last, CEA has recently launched the preliminary project study of a new MTR, the Jules Horowitz Reactor, to meet the future needs of fuels and materials irradiations in the next 4 or 5 decades, in support of the French long term nuclear power program. (J.P.N.)

Personnel training at EDF's nuclear and fossil generation division and its application for the personnel of a nuclear power station abroad

International Nuclear Information System (INIS)

Rabouhams, J.

1991-01-01

Safety in nuclear power stations relies so much upon human competence that the training of the personnel has to respond to the basic need of having personnel who are competent in their job permanently available. EDF has designed, organized and managed a large volume of training in order to provide its personnel involved in the operation of nuclear power station with initial training, training, retraining and improvement within the framework of quality organization. To deal with this training in the most efficient way EDF has developed various training aids ranging from booklets to fullscope simulator or fullscope mockups which are continually updated. All EDF experience has been used to train Daya Bay nuclear power plant personnel who have been monitored throughout the training programmes. Adequate safety conduct and attitudes including the socio-cultural background have been developed during the training. The principle teaching method was shadow training in other words the transfer in situ of knowledge, know how, and conduct from an experienced engineer. (author)

ASTRID: Advanced Sodium Technological Reactor for Industrial Demonstration

International Nuclear Information System (INIS)

Vasile, A.

2012-01-01

Conclusions: • R&D results [CEA-AREVA-EDF] obtained from 2007 to 2009 have contributed to ASTRID mid 2010 choice of options; • ASTRID has the objective to demonstrate at the industrial scale progress in the identified domains of SFR weakness (safety, operability, economy). and to perform transmutation demonstrations; • A lot of improvements are related to safety; • The first very important milestone is 2012 (June 2006 French Act on wastes management): – ASTRID pre-conceptual design studies: 2010-2012; – First investment cost evaluation; – First safety Authorities advice on the orientations for ASTRID safety; • With the ASTRID program funded by the French government, France has the opportunity to develop a GEN IV Sodium Fast Reactor

EDF'S ''OMF-structures'' RI-ISI process: overview of the methodology, applications and comparison with the other existing RI-ISI initiatives

International Nuclear Information System (INIS)

Codron, P.; Lauriot, B.; Dubreuil-Chambardel, A.

2001-01-01

The OMF-Structures process has been developed by EDF in order to optimise the maintenance of piping components. The principles of the OMF-Structures are consistent with the RCM concepts in EDF's OMF process (applied to active components). Several applications of this process have been performed. This paper also presents several applications which have been performed, notably on the AFW, RHR, and HPSI/LPSI systems of EDF's 900 MW PWR plants. These applications led to propose optimised preventive maintenance programs for these systems. These updated preventive maintenance programs confirmed and justified a large proportion of existing maintenance, despite some inspection tasks were suppressed and some inspection tasks were added. Globally, these new programs guarantee a better safety level, insuring that preventive maintenance is applied on piping segments where risks are concentrated. A comparative evaluation of the OMF-Structures process with the EPRI and WOG/ASME RI-ISI methodologies has been performed. This comparison demonstrated the consistence of the OMF-Structures principles and selection criteria with the other RI-ISI processes. (author)

Moving ring reactor 'Karin-1'

International Nuclear Information System (INIS)

1983-12-01

The conceptual design of a moving ring reactor ''Karin-1'' has been carried out to advance fusion system design, to clarify the research and development problems, and to decide their priority. In order to attain these objectives, a D-T reactor with tritium breeding blanket is designed, a commercial reactor with net power output of 500 MWe is designed, the compatibility of plasma physics with fusion engineering is demonstrated, and some other guideline is indicated. A moving ring reactor is composed mainly of three parts. In the first formation section, a plasma ring is formed and heated up to ignition temperature. The plasma ring of compact torus is transported from the formation section through the next burning section to generate fusion power. Then the plasma ring moves into the last recovery section, and the energy and particles of the plasma ring are recovered. The outline of a moving ring reactor ''Karin-1'' is described. As a candidate material for the first wall, SiC was adopted to reduce the MHD effect and to minimize the interaction with neutrons and charged particles. The thin metal lining was applied to the SiC surface to solve the problem of the compatibility with lithium blanket. Plasma physics, the engineering aspect and the items of research and development are described. (Kako, I.)

Status of French R and D for advanced light water reactors

International Nuclear Information System (INIS)

Nigon, J.L.

1987-01-01

Present PWRs lead to a significant reduction of electricity cost when compared to other sources. Then it seems reasonable to keep the main features of PWRs when looking for improvements of investment cost, of operating and fuel costs, of flexibility and of safety. Besides that we have to think about uranium conservation; if nuclear starts again in many countries, as we hope, the uranium market could get into a crisis during the first half of the 21st century, and uranium shortage could become a reality. Advanced PWRs are also aimed at fissile material saving. The three French partners CEA, EdF and FRAMATOME decided to lead a three year programme 1984-1987. FRAMATOME in fact had started a little bit earlier, namely in 1982 (first publication in RNG - a French technical journal) and developed the RCVS, spectral shift convertible reactor core (for both Uranium and Plutonium fuel). FRAMATOME's effort is estimated to about 40.10 6 FF per year. EdF, R and D Division, is associated with this feasibility study. CEA performs an R and D programme, the objectives of which are: to support FRAMATOME for RCVS design; to explore a wider range of parameters in order to estimate the feasibility and the interest of tight lattice PWR cores. Simultaneously, EdF is defining the preliminary specifications of ''REP 2000'' (future standard for French PWRs in the year 2000 and following); the objectives of REP 2000 are: load follow capacity; cost effectiveness; operation flexibility. FRAMATOME's RCVS and the CEA RSM feasibility study have to be considered in this context. The main objectives are: 1) To improve performances, safety and to minimise cost; 2) To save fissile materials according to a global strategy; 3) While minimum modifications of present PWR components will be accepted. The R and D budget for PWRs (outside safety) of French CEA is around 450 10 6 FF per year. Among this, 40 10 6 FF/year are devoted to tight lattice core feasibility studies (period 1984-1987). 3 figs

EDF: contribution to local development and the protection of the environment

International Nuclear Information System (INIS)

Parot, F.; Veyret, G.

1995-01-01

As a consequence of the 1982-1983 French Decentralization laws, local elected officials were entrusted with new responsibilities concerning environmental protection and local development. EDF, the French public electricity utility therefore had to respond to new demands. New forms of cooperation with the various local actors were imagined: assistance in diagnostics, working out local strategies, subcontracting and working for the establishment of new industrial plants, multi-purpose water management (dams for example), environment protection (discreet lines...), urban waste treatment, transportation, etc

The determination of neutron energy spectrum in reactor core C1 of reactor VR-1 Sparrow

Energy Technology Data Exchange (ETDEWEB)

Vins, M. [Department of Nuclear Reactors, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University, V Holesovickach 2, 180 00 Prague 8 (Czech Republic)], E-mail: vinsmiro@seznam.cz

2008-07-15

This contribution overviews neutron spectrum measurement, which was done on training reactor VR-1 Sparrow with a new nuclear fuel. Former nuclear fuel IRT-3M was changed for current nuclear fuel IRT-4M with lower enrichment of 235U (enrichment was reduced from former 36% to 20%) in terms of Reduced Enrichment for Research and Test Reactors (RERTR) Program. Neutron spectrum measurement was obtained by irradiation of activation foils at the end of pipe of rabit system and consecutive deconvolution of obtained saturated activities. Deconvolution was performed by computer iterative code SAND-II with 620 groups' structure. All gamma measurements were performed on Canberra HPGe. Activation foils were chosen according physical and nuclear parameters from the set of certificated foils. The Resulting differential flux at the end of pipe of rabit system agreed well with typical spectrum of light water reactor. Measurement of neutron spectrum has brought better knowledge about new reactor core C1 and improved methodology of activation measurement. (author)

Reactor theory and power reactors. 1. Calculational methods for reactors. 2. Reactor kinetics

International Nuclear Information System (INIS)

Henry, A.F.

1980-01-01

Various methods for calculation of neutron flux in power reactors are discussed. Some mathematical models used to describe transients in nuclear reactors and techniques for the reactor kinetics' relevant equations solution are also presented

The French nuclear power plant reactor building containment contributions of prestressing and concrete performances in reliability improvements and cost savings

International Nuclear Information System (INIS)

Rouelle, P.; Roy, F.

1998-01-01

The Electricite de France's N4 CHOOZ B nuclear power plant, two units of the world's largest PWR model (1450 Mwe each), has earned the Electric Power International's 1997 Powerplant Award. This lead NPP for EDF's N4 series has been improved notably in terms of civil works. The presentation will focus on the Reactor Building's inner containment wall which is one of the main civil structures on a technical and safety point of view. In order to take into account the necessary evolution of the concrete technical specification such as compressive strength low creep and shrinkage, the HSC/HPC has been used on the last N4 Civaux 2 NPP. As a result of the use of this type of professional concrete, the containment withstands an higher internal pressure related to severe accident and ensures higher level of leak-tightness, thus improving the overall safety of the NPP. On that occasion, a new type of prestressing has been tested locally through 55 C 15 S tendons using a new C 1500 FE Jack. These updated civil works techniques shall allow EDF to ensure a Reactor Containment lifespan for more than 50 years. The gains in terms of reliability and cost saving of these improved techniques will be developed hereafter

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 combustibles, une simplification du systeme de

Occupational analysis for the Angra-1 reactor

International Nuclear Information System (INIS)

Moraes, A.

1991-01-01

Due to several modifications which were imposed to its time schedule during construction, the Angra-1 reactor did not enter to the grid in 1982 as it was initially foreseen. These modifications occurred due to an unforeseen scenario that was verified in steam generators (serie D-3, Westinghouse) of power stations with similar configurations which had been installed in other countries such as Ringhals-3 (Sweden), Almaraz-1 (Spain) and McGuine-1 (USA). So, among the main events that occurred in the Angra-1 reactor, which were of interest from the point of view of radiation protection, it could be pointed out the personnel monitoring, and the occupational exposure measurements at different reactor power, during the reactor fueling and during modification and tests performed at the steam generators and at ducts of the primary coolant circuit. (author)

Round robin test for zirconium alloys in 400 deg C steam: results from EDF

International Nuclear Information System (INIS)

Blat, M.

1994-01-01

The EDF Material Studies Branch has participated in the Round Robin program of uniform corrosion on zirconium alloys. The objectives of these Round Robin corrosion tests are to generate new uniform corrosion weight gain date utilizing modern zirconium alloy products and to improve the International and ASTM standards. (author). 2 tabs., 7 appendix., 2 refs

The lead cooled fast reactor benchmark Brest-300: analysis with sensitivity method

International Nuclear Information System (INIS)

Smirnov, V.; Orlov, V.; Mourogov, A.; Lecarpentier, D.; Ivanova, T.

2005-01-01

Lead cooled fast neutrons reactor is one of the most interesting candidates for the development of atomic energy. BREST-300 is a 300 MWe lead cooled fast reactor developed by the NIKIET (Russia) with a deterministic safety approach which aims to exclude reactivity margins greater than the delayed neutron fraction. The development of innovative reactors (lead coolant, nitride fuel...) and fuel cycles with new constraints such as cycle closure or actinide burning, requires new technologies and new nuclear data. In this connection, the tool and neutron data used for the calculational analysis of reactor characteristics requires thorough validation. NIKIET developed a reactor benchmark fitting of design type calculational tools (including neutron data). In the frame of technical exchanges between NIKIET and EDF (France), results of this benchmark calculation concerning the principal parameters of fuel evolution and safety parameters has been inter-compared, in order to estimate the uncertainties and validate the codes for calculations of this new kind of reactors. Different codes and cross-sections data have been used, and sensitivity studies have been performed to understand and quantify the uncertainties sources.The comparison of results shows that the difference on k eff value between ERANOS code with ERALIB1 library and the reference is of the same order of magnitude than the delayed neutron fraction. On the other hand, the discrepancy is more than twice bigger if JEF2.2 library is used with ERANOS. Analysis of discrepancies in calculation results reveals that the main effect is provided by the difference of nuclear data, namely U 238 , Pu 239 fission and capture cross sections and lead inelastic cross sections

Opinion of the IRSN on serviceability of the 900 MWe reactor vessel - Answers to demands of the Nuclear Permanent Department of December 2005 - Mechanical aspect

International Nuclear Information System (INIS)

2010-05-01

As three demands had been made to EDF in December 2005 regarding the serviceability and more particularly the mechanical behaviour of the 900 MWe reactor vessels, this report discusses the evolution brought to models and proposed by EDF to correct the defect plasticity and take residual stresses into account. This discussion notably concerns the defect height and length range, and the admissible residual stress, but also the use of safety coefficients, transient application, fluence and the brittle-ductile transition temperature. This report from the French Nuclear Safety and Radioprotection Institute (IRSN) outlines the failure risks associated to the vessel in some specific nuclear power stations. Recommendations are made regarding the residual stress amplitude, the risk of fracture by cleavage, and actions to correct fracture risk margins on vessels which do not comply with regulatory criteria

Round robin test for zirconium alloys in 400 deg C steam: results from EDF; Essais interlaboratoires de corrosion generalisee en milieu vapeur a 400 deg C d`alliages de zirconium: resultats d`EDF

Energy Technology Data Exchange (ETDEWEB)

Blat, M.

1994-01-01

The EDF Material Studies Branch has participated in the Round Robin program of uniform corrosion on zirconium alloys. The objectives of these Round Robin corrosion tests are to generate new uniform corrosion weight gain date utilizing modern zirconium alloy products and to improve the International and ASTM standards. (author). 2 tabs., 7 appendix., 2 refs.

Reactor operations at SAFARI-1

International Nuclear Information System (INIS)

Vlok, J.W.H.

2003-01-01

A vigorous commercial programme of isotope production and other radiation services has been followed by the SAFARI-1 research reactor over the past ten years - superimposed on the original purpose of the reactor to provide a basic tool for nuclear research, development and education to the country at an institutional level. A combination of the binding nature of the resulting contractual obligations and tighter regulatory control has demanded an equally vigorous programme of upgrading, replacement and renovation of many systems in order to improve the safety and reliability of the reactor. Not least among these changes is the more effective training and deployment of operations personnel that has been necessitated as the operational demands on the reactor evolved from five days per week to twenty four hours per day, seven days per week, with more than 300 days per year at full power. This paper briefly sketches the operational history of SAFARI-1 and then focuses on the training and structuring currently in place to meet the operational needs. There is a detailed step-by-step look at the operator?s career plan and pre-defined milestones. Shift work, especially the shift cycle, has a negative influence on the operator's career path development, especially due to his unavailability for training. Methods utilised to minimise this influence are presented. The increase of responsibilities regarding the operation of the reactor, ancillaries and experimental facilities as the operator progresses with his career are discussed. (author)

Saving more to consume more. EDF's communication ambiguities during the energy saving era

International Nuclear Information System (INIS)

Bouvier, Yves

2012-01-01

Since 1974, EDF is placed between a communication scheme imposed for energy savings and an industrial strategy of massive investment in nuclear power. In ten years, the company managed to increase households electricity consumption without advertising, due in particular to electric heating. But strong tensions were generated by this situation and led the company to develop an institutional communication to the employees and to the general public

Areva: 1. quarter 2015 revenue down, at euros 1.762 bn: -1.1% vs. March 2014 (-0.9% like for like)

International Nuclear Information System (INIS)

Repaire, Philippine du

2015-01-01

In the 1. quarter of 2015, AREVA generated consolidated revenue of 1.762 billion euros, representing a decrease of 1.1% (-0.9% like for like) compared with the same period in 2014. Foreign exchange had a positive impact of 36 million euros over the period, while consolidation scope had a negative impact of 39 million euros. At March 31, 2015, the group had 47.520 billion euros in backlog, a 1.4% increase in relation to December 31, 2014 (46.866 billion euros) reflecting a favorable foreign exchange impact. It should be noted that the backlog does not include the amount from agreements signed with EDF in October 2013 for the EPR reactors project at Hinkley Point in the United Kingdom or for the related fuel. The order intake totaled 881 million euros in the 1. quarter of 2015, an increase compared with the 1. quarter of 2014 (668 million euros)

Organization of training and teaching methods at Electricite de France (EDF)

International Nuclear Information System (INIS)

Combe, J.

1980-01-01

The training of staff for the equipping, operating and servicing of EDF nuclear facilities was organized at a time when the undertaking had already developed its general training schemes and teaching methods. A brief account of these schemes and methods is given in the paper. Staff training at EDF was clearly devised with implicit regard for the educational and technological features of French society. This fact should not be forgotten when seeking to compare what is described here with developments abroad. The organization of training is based on a few relatively simple principles. The object of any training is to acquire competence, not just knowledge, and this calls for a combination of teaching and practical experience. Training programmes are drawn up taking into account the professional experience acquired in a particular trade, and training activities are, as far as possible, divorced from selection and examination procedures. The large number of workers needing to be trained in the nuclear field has led to standardization of training programmes. Teaching methods tend to be based on a combination of theoretical instruction and practical experience. Training thus involves the use of active or semi-active methods designed to promote familiarization with methods of working as well as the attainment of knowledge and ability. For these reasons, conditions of training as close as possible to actual work situations are created in the training centres, where great emphasis is placed on simulation techniques. (author)

''PSAD'' on-line monitoring and aid to diagnosis workstation: a monitoring tool for EDF power plants

International Nuclear Information System (INIS)

Morel, J.; Mazalerat, J.M.; Monnier, B.; Cordier, R.

1993-01-01

Like other electricity utilities, Electricite de France seeks to enhance the safety and availability of its nuclear power plants. To this end, for over ten years EDF has been installing on each plant unit two monitoring systems of its own design, one to monitor the primary cooling system, and the other, the turbogenerator set. Since the beginning of this project, widespread progress has been made in techniques of signal acquisition and processing, and in diagnosis using artificial intelligence methods. EDF has decided to call on these advanced techniques in developing its new-generation monitoring equipment, and to integrate them in its development of a workstation for on-line monitoring and diagnosis-support (PSAD: Poste de Surveillance et d'Aide au Diagnostic). PSAD will be a tool for on-line monitoring of the main components in nuclear power plants (initially the main coolant pumps and turbogenerator sets, and soon thereafter, monitoring of internal structures, detection of loose parts in the primary cooling system, etc.). PSAD will provide plant personnel with indispensable support in their diagnosis of the condition of plant equipment. It will integrate user-friendly, high-performance systems that also free the operator from many day-to-day tasks. PSAD will have a flexible architecture, for optimum distribution of the computing power where it is most needed, thereby improving the quality of the data. This paper presents the project objectives and describes work currently under way to implement EDF's diagnosis-support strategy for the years to come. (authors). 5 figs., 6 refs

Graphite and carbonaceous materials in a molten salt nuclear reactor

International Nuclear Information System (INIS)

Rousseau, Ginette; Lecocq, Alfred; Hery, Michel.

1982-09-01

A project for a molten salt 1000 MWe reactor is studied by EDF-CEA teams. The design provides for a chromesco 3 vessel housing graphite structures in which the salt circulates. The salt (Th, U, Be and Li fluorides) is cooled by direct contact with lead. The graphites and carbonated materials, inert with respect to lead and the fuel salt, are being considered not only as moderators, but as reflectors and in the construction of the sections where the heat exchange takes place. On the basis of the problems raised in the operation of the reactor, a study programme on French experimental materials (Le Carbone Lorraine, SERS, SEP) has been defined. Hence, depending on the function or functions that the material is to ensure in the structure, the criteria of choice which follow will have to be examined: behaviour under irradiation, insertion of a fluid in the material, thermal properties required, mechanical properties required, utilization [fr

Extensive utilization of training reactor VR-1

International Nuclear Information System (INIS)

Karel, Matejka; Lubomir, Sklenka

2005-01-01

This paper describes one of the main purposes of the VR-1 training reactor utilisation - i.e. extensive educational programme. The educational programme is intended for the training of university students (all technical universities in Czech Republic) and selected nuclear power plant personnel. At the present, students can go through more than 20 different experimental exercises. An attractive programme including demonstration of reactor operation is prepared also for high school students. Moreover, research and development works and information programmes proceed at the VR-1 reactor as well

The French Electricity Company (EDF) and GEC ALSTHOM have signed the agreement for Chinese Laibin B electric power plant; Electricite de France (EDF) et GEC ALSTHOM signent l'accord de la centrale electrique de Laibin B en Chine

Energy Technology Data Exchange (ETDEWEB)

NONE

1997-09-03

EDF and GEC ALSTHOM together with the government of Chinese Province Guangxi have organized in Pekin on 3 september 1997 a ceremony for signing a BOOT (Build, Own, Operate, Transfer) contract for the Coal Power Plant (2 x 360 MW) at Laibin B. This is the first Chinese BOOT contract in the power domain entirely financed by foreign capital. The two western companies which were retained for this project, following an international call for offers, invest USD 150 million of its own founds in this USD 600 million project. They will hold 60% and 40% of the capital of the company created for this project, respectively. The construction power plant is planned to be completed at the end of 1999 - beginning of 2000. After 15 years of industrial operation the power plant will be transferred to the autonomous government of the Province Guangxi. The communique contains the following 8 files: 1. The Laibin B power plant; 2. Build, Own, Operate, Transfer; 3. The autonomous Guangxi Province; 4. An outline of EDF in China; 5. Profile/activities of GEC ALSTHOM in China; 6. The 'Credit Agricole Indosuez' in China; 7. BZW Barclays PLC; 8. HSBC Investment Banking in China.

Shape optimization of a sodium cooled fast reactor

International Nuclear Information System (INIS)

Schmitt, D.; Allaire, G.; Pantz, O.; Pozin, N.

2013-01-01

Traditional designs of sodium cooled fast reactors have a positive sodium expansion feedback. During a loss of flow transient without scram, sodium heating and boiling thus insert a positive reactivity and prevents the power from decreasing. Recent studies led at CEA, AREVA and EDF show that cores with complex geometries can feature a very low or even a negative sodium void worth. Usual optimization methods for core conception are based on a parametric description of a given core design. New core concepts and shapes can then only be found by hand. Shape optimization methods have proven very efficient in the conception of optimal structures under thermal or mechanical constraints. First studies show that these methods could be applied to sodium cooled core conception. In this paper, a shape optimization method is applied to the conception of a sodium cooled fast reactor core with low sodium void worth. An objective function to be minimized is defined. It includes the reactivity change induced by a 1% sodium density decrease. The optimization variable is a displacement field changing the core geometry from one shape to another. Additionally, a parametric optimization of the plutonium content distribution of the core is made, so as to ensure that the core is kept critical, and that the power shape is flat enough. The final shape obtained must then be adjusted to a given realistic core layout. Its characteristics can be checked with reference neutronic codes such as ERANOS. Thanks to this method, new shapes of reactor cores could be inferred, and lead to new design ideas. (authors)

Molten salt reactor type

International Nuclear Information System (INIS)

1977-01-01

This document is one of the three parts of a first volume devoted to the compilations of American data on the molten salt reactor concept. This part 'CIRCUITS' regroups under a condensed form - in French and using international units - the essential information contained in both basic documents of the American project for a molten-salt breeder power plant. This part is only dealing with things relating to the CEA-EDF workshop 'CIRCUITS'. It is not concerned with information on: the reactor and the moderator replacement, the primary and secondary salts, and the fuel salt reprocessing, that are dealt with in parts 'CORE' and 'CHEMISTRY' respectively. The possible evolutions in the data - and solutions - taken by the American designers for their successive projects (1970 to 1972) are shown. The MSBR power plant comprises three successive heat transfer circuits. The primary circuit (Hastelloy N), radioactive and polluted, containing the fuel salt, includes the reactor, pumps and exchangers. The secondary circuit (pipings made of modified Hastelloy N) contaminated in the exchanger, ensures the separation between the fuel and the fluid operating the turbo-alternator. The water-steam circuit feeds the turbine with steam. This steam is produced in the steam generator flowed by the secondary fluid. Some subsidiary circuits (discharge and storage of the primary and secondary salts, ventilation of the primary circuit ...) complete the three principal circuits which are briefly described. All circuits are enclosed inside the controlled-atmosphere building of the nuclear boiler. This building also ensures the biological protection and the mechanical protection against outer aggressions [fr

Stability analysis of the Ghana Research Reactor-1 (GHARR-1)

International Nuclear Information System (INIS)

Della, R.; Alhassan, E.; Adoo, N.A.; Bansah, C.Y.; Nyarko, B.J.B.; Akaho, E.H.K.

2013-01-01

Highlights: • We developed a theoretical model to study the stability of the Ghana Research Reactor-1. • The neutronics transfer function was described by the point kinetics model for a single group of delayed neutrons. • The thermal hydraulics transfer function was based on the modified lumped parameter concept. • A computer code, RESA (REactor Stability Analysis) was developed. • Results show that the closed-loop transfer function was stable and well damped for variable operating power levels. - Abstract: A theoretical model has been developed to study the stability of the Ghana Research Reactor one (GHARR-1). The closed-loop transfer function of GHARR-1 was established based on the model, which involved the neutronics and the thermal hydraulics transfer functions. The reactor kinetics was described by the point kinetics model for a single group of delayed neutrons, whilst the thermal hydraulics transfer function was based on the modified lumped parameter concept. The inherent internal feedback effect due to the fuel and the coolant was represented by the fuel temperature coefficient and the moderator temperature coefficient respectively. A computer code, RESA (REactor Stability Analysis), entirely in Java was developed based on the model for systems analysis. Stability analysis of the open-loop transfer function of GHARR-1 based on the Nyquist criterion and Bode diagrams using RESA, has shown that the closed-loop transfer function was marginally stable for variable operating power levels. The relative stability margins of GHARR-1 were also identified

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

Energy Technology Data Exchange (ETDEWEB)

Aubouin, Pascal [Electricite de France, Site Cap Ampere, 1, place Pleyel, 93282 Saint Denis Cedex (France); Borel, Remi [Electricite de France, Site Cap Ampere, 1, place Pleyel, 93282 Saint Denis Cedex (France)

2001-07-01

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 ''citizens 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.

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

EDF ageing management program of nuclear components: a safety and economical issue

International Nuclear Information System (INIS)

Faidy, C.

2005-01-01

Ageing management of Nuclear Power Plants is an essential issue for utilities, in term of safety and availability and corresponding economical consequences. Practically all nuclear countries have developed a systematic program to deal with ageing of components on their plants. This paper presents the ageing management program developed by EDF and that are compared with different other approaches in other countries (IAEA guidelines and GALL report). The paper presents a general overview of the programs, the major results, recommendations and conclusions. (author)

The French Electricity Company (EDF) and GEC ALSTHOM have signed the agreement for Chinese Laibin B electric power plant

International Nuclear Information System (INIS)

1997-01-01

EDF and GEC ALSTHOM together with the government of Chinese Province Guangxi have organized in Pekin on 3 september 1997 a ceremony for signing a BOOT (Build, Own, Operate, Transfer) contract for the Coal Power Plant (2 x 360 MW) at Laibin B. This is the first Chinese BOOT contract in the power domain entirely financed by foreign capital. The two western companies which were retained for this project, following an international call for offers, invest USD 150 million of its own founds in this USD 600 million project. They will hold 60% and 40% of the capital of the company created for this project, respectively. The construction power plant is planned to be completed at the end of 1999 - beginning of 2000. After 15 years of industrial operation the power plant will be transferred to the autonomous government of the Province Guangxi. The communique contains the following 8 files: 1. The Laibin B power plant; 2. Build, Own, Operate, Transfer; 3. The autonomous Guangxi Province; 4. An outline of EDF in China; 5. Profile/activities of GEC ALSTHOM in China; 6. The 'Credit Agricole Indosuez' in China; 7. BZW Barclays PLC; 8. HSBC Investment Banking in China

Competition at the attack of EdF's dams

International Nuclear Information System (INIS)

James, O.; Gateaud, P.; Dupin, L.

2010-01-01

The exploitation of French hydroelectric dams is at the eve of a big upheaval. EdF, the historical operator, and GdF Suez the French number two of hydropower generation are going to face the strong competition of the big European energy groups. France will open 20% of its hydroelectric potential to competition in order to be in agreement with the opening of energy markets imposed by the European Union, and to increase by 10% the hydroelectric power as requested by the French government policy. The candidates will have to fulfill 3 criteria: investing to increase production, reducing the environmental impacts, and accepting the principle of paying fees. However, some of the French dams suffer from serious pathologies and the health of thousands of small dams remains unknown because of the lack of available data. (J.S.)

Crisis communication and EDF's power grid paralysis from the 1970's to the 2000's

International Nuclear Information System (INIS)

Gautreau, Arthur

2009-01-01

The power failure of 19 December 1978 and the storms of December 1999 were two critical moments in crisis communication for EDF. If the difficult situations or else the disasters were effectively anticipated, only these actual situations had allowed improving the Company's communication schemes and systems. Since the years 1950 and the program of hydraulic equipment, EDF had obviously developed a communication department that was enhanced with the launch of the nuclear program. Similarly, a 'crisis communication' was permanently ready, namely in the cases of storm or snowfall. The power failure of 19 December 1978 occurred whilst the company had an active scheme, but it is its sheer size that surprised. As it obliged to resort to the national media (radio) to inform the users without electricity. If the network had not been affected in 1978, things were quite different during the storms of 1999. And communication was then focused on mobilizing the Company's employees to restore electricity. In both cases, the feedback from experience has allowed to improve the communication schemes and systems

Estimation of radioactivity in structural materials of ETRR-1 reactor

Energy Technology Data Exchange (ETDEWEB)

Imam, M [National Center for Nuclear Safety and Radiation Control Atomic Energy Authority, Cairo (Egypt)

1997-12-31

Precise knowledge of the thermal neutron flux in the different structural materials of a reactor is necessary to estimate the radioactive inventory in these materials that are needed in any decommissioning study of the reactor. ETRR-1 is a research reactor that went critical on 2/1691. In spite of this long age of the reactor, the effective operation time of this reactor is very short since the reactor was shutdown for long periods. Because of this long age one may think of reactor decommissioning. For this purpose, the radioactivity of the reactor structural materials was estimated. Apart from the reactor core, the important structural materials in the ETRR-1 are the reactor tank, shielding concrete, and the graphite thermal column. The thermal neutron flux was determined by the monte Carlo method in these materials and the isotope inventory and the radioactivity were calculated by the international code ORIGEN-JR. 1 fig.

1994 - a vintage year for safety in France

International Nuclear Information System (INIS)

Frantzen, C.

1995-01-01

With 54 operating PWR units (plus one fast reactor) in its ''nuclear fleet'', EdF (Electricite de France) has now logged more than 584 reactor years of operation. The value of this experience was demonstrated again in 1994 when no incident at or above level 3 on the International Nuclear Event Scale (INES) occurred. EdF has been free of level 3 incidents since 1989. (author)

Fuel operation of EDF nuclear fleet presentation of the centralized organization for operational engineering at the nuclear generation division

International Nuclear Information System (INIS)

Paulin, Ph.

2006-01-01

The main feature of EDF Nuclear Fleet is the standardization, with 'series' of homogeneous plants (same equipment, fuel and operation technical documents). For fuel operation, this standardization is related to the concept of 'fuel management scheme' (typical fuel reloads with fixed number and enrichment of fresh assemblies) for a whole series of plants. The context of the Nuclear Fleet lead to the choice of a centralized organization for fuel engineering at the Nuclear Generation Division (DPN), located at UNIPE (National Department for Fleet Operation Engineering) in Lyon. The main features of this organization are the following: - Centralization of the engineering activities for fuel operation support in the Fuel Branch of UNIPE, - Strong real-time link with the nuclear sites, - Relations with various EDF Departments in charge of design, nuclear fuel supply and electricity production optimization. The purposes of the organization are: - Standardization of operational engineering services and products, - Autonomy with independent methods and computing tools, - Reactivity with a technical assistance for sites (24 hours 'hot line'), - Identification of different levels (on site and off site) to solve core operation problems, - Collection, analysis and valorization of operation feedback, - Contribution to fuel competence global management inside EDF. This paper briefly describes the organization. The main figures of annual engineering production are provided. A selection of examples illustrates the contribution to the Nuclear Fleet performance. (authors)

The cycle of the nuclear fuel used in EDF power plants

International Nuclear Information System (INIS)

2011-11-01

This document briefly indicates the different stages of the nuclear fuel cycle, from the purchase of natural uranium to waste storage. It also indicates the main responsibilities of EDF regarding this fuel cycle (to secure supplies, to organise material transportation, to process and store used fuels and associated wastes). It presents the different associated processes: uranium extraction, purification and concentration, conversion or fluoridation, enrichment. It briefly describes the fuel assembly fabrication, and indicates the main uranium producers in the world. Other addressed steps are: the transportation of fuel assembly, fuel loading, and spent fuel management, the processing of spent fuel and radioactive wastes

Mechanics of structures and maintenance of pressurized water reactors

International Nuclear Information System (INIS)

Hutin, J.P.

1992-01-01

Electricite de France nowadays has in operation 34 units of 900 MW and 17 units of 1300 MW of PWR. Since the first unit was run, this means that more than 350 reactor-years have been performed, to which should be added the experience already gained on fossil fuel or natural uranium plants. This enabled EDF to build its own philosophy and a strategy for maintenance that are best suited for the specific requirements of the hardware with which the actual nuclear boilers are made-up. This philosophy and strategy rest upon an analysis which calls widely for the mechanics of structures, to such an extent that major decisions concerning maintenance depend on the ability that one has for resolving problems within the scope of that discipline

Design description of the European pressurized water reactor

International Nuclear Information System (INIS)

Leverenz, R.

1999-01-01

The EPR (the European Pressurized Water Reactor) is an evolutionary PWR developed by Nuclear Power International and its parent companies, Framatome and Siemens, in co-operation with Electricite de France and German Utilities. NPI can rely on the huge experience gained by its parent companies; they have constructed more than 100 nuclear power plants throughout the world. The total installed capacity exceeds 100,000 MW - about 25% of the total world-wide figure. Following the conceptual design phase of the so-called Common Product conducted by NPI, Framatome and Siemens, from 1989 through 1991, Electricite de France (EDF) and several major German utilities decided to merge their own development programmes, - the N4 Plus and REP 2000 projects on the French side and the further development of the KONVOI technology on the German side, - with the NPI project. From that time on, the NPI project became one single common development line for both countries. In parallel, EDF and the German utilities decided to establish, together with other European utilities, specifications that would represent common utility views on the design and performance of future nuclear power plants. These are documented in the European Utility Requirements (EURs). The basic design has been completed in 1997, and in 1998 a design optimization is being carried out with the goal to even increase the economic competitiveness of nuclear power. This paper provides a brief design description of the EPR. (author)

MERMOS: an EDF project to update the PHRA methodology (Probabilistic Human Reliability Assessment)

International Nuclear Information System (INIS)

Le Bot, Pierre; Desmares, E.; Bieder, C.; Cara, F.; Bonnet, J.L.

1998-01-01

To account for successive evolution of nuclear power plants emergency operation, EDF had several times to review PHRA methodologies. It was particularly the case when event-based procedures were left behind to the benefit of state-based procedures. A more recent updating was necessary to get pieces of information on the new unit type N4 safety. The extent of changes in operation for this unit type (especially the computerization of both the control room and the procedures) required to deeply rethink existing PHRA methods. It also seemed necessary to - more explicitly than in the past - base the design of methods on concepts evolved in human sciences. These are the main ambitions of the project named MERMOS that started in 1996. The design effort for a new PHRA method is carried out by a multidisciplinary team involving reliability engineers, psychologists and ergonomists. An independent expert is in charge of project review. The method, considered as the analysis tool dedicated to PHRA analysts, is one of the two outcomes of the project. The other one is the formalization of the design approach for the method, aimed at a good appropriation of the method by the analysts. EDF's specificity in the field of PHRA and more generally PSA is that the method is not used by the designers but by analysts. Keeping track of the approach is also meant to guarantee its transposition to other EDF unit types such as 900 or 1300 MW PWR. The PHRA method is based upon a model of emergency operation called 'SAD model'. The formalization effort of the design approach lead to clarify and justify it. The model describes and explains both functioning and dys-functioning of emergency operation in PSA scenarios. It combines a systemic approach and what is called distributed cognition in cognitive sciences. Collective aspects are considered as an important feature in explaining phenomena under study in operation dys-functioning. The PHRA method is to be operational early next year (1998

Synthesis of the IRSN report on the control-command architecture of the Flamanville 3 EPR reactor and the associated platforms

International Nuclear Information System (INIS)

2009-06-01

This document briefly reports the IRSN's comments on the robustness of the control-command architecture of the Flamanville 3 EPR (European pressurized reactor), that is of the equipment which, to various extent, contribute to the installation safety. This report identifies the equipment the robustness of which should be improved, outlines the problems created by the complexity of computerized systems. Notably, the authors comment the ability of the off-the-shelf computer platforms acquired by EDF to deal with the nuclear context

Contribution to development of SPNDs for instantaneous and selective measurement of different radiation fields in nuclear reactors

International Nuclear Information System (INIS)

Blandin, Christophe

1998-01-01

The objective of this work was conceiving and experimentally optimizing the SPNDs (Self-Powdered Neutron Detector) able to control fast power transients in test reactors and also to cope with requirements of surveillance and protection of EDF reactors. Thus, different SPND emitters of platinum, gadolinium, hafnium and cobalt were provided according to their nature with sheathing and stainless steel plugs as well as with zirconium over-sheathing in order to render them faster, more selective and adapted for wear checking. Special experimental devices were designed for measuring inside the Siloe reactor the promptness of the signals from SPND, on one hand, and their sensitivity to thermal and epithermal neutrons as well as to gamma rays, on the other hand. The follow-up of power transients in test reactors is ensured by the instantaneous measurement of thermal and epithermal neutron flux as well as of gamma field by means of three special SPND with gadolinium, hafnium and platinum. Also, we have defined the characteristics of a new SPND with cobalt, that delivers a current of unique neutronic origin, able to ensure the surveillance and protection of a power reactor over a period of at least six years

Application of the probabilistic method at the E.D.F

International Nuclear Information System (INIS)

Gachot, Bernard

1976-01-01

Having first evoked the problems arising from the definition of a so-called 'acceptable risk', the probabilistic study programme on safety carried out at the E.D.F. is described. The different aspects of the probabilistic estimation of a hazard are presented as well as the different steps i.e. collecting the information, carrying out a quantitative and qualitative analysis, which characterize the probabilistic study of safety problems. The problem of data determination is considered on reliability of the equipment, noting as a conclusion, that in spite of the lack of accuracy of the present data, the probabilistic methods already appear as a highly valuable tool favouring an homogenous and coherent approach of nuclear plant safety [fr

Materials challenges supporting new sodium fast reactor designs

International Nuclear Information System (INIS)

Gelineau, O.; Goff, S. Dubiez-le; Dubuisson, Ph.; Dalle, F.; Blat, M.

2009-01-01

Sodium Fast Reactor is considered in France as the most mature technology of the different Generation IV systems. In the short-term the designing work is focused on the identification of the potential tracks to improve competitiveness, safety, efficiency and to reduce cost. In that frame the materials have a key role to play. This paper is focused on the new materials envisaged and on the Research and Development program launched in France by Areva NP, CEA and EDF in order to sustain the innovative design options: ferritic steels as candidates for exchangers, steam generators and possibly sodium circuits, optimization of materials and fabrication processes to improve safety and risk management, extension of material databases to take into account the 60 years life duration including irradiation and ageing effect. (author)

Operation characteristics and conditions of training reactor VR-1

International Nuclear Information System (INIS)

Matejka, K.; Kolros, A.; Polach, S.; Sklenka, L.

1994-01-01

The first 3 years of operation of the VR-1 training reactor are reviewed. This period includes its physical start-up (preparation, implementation, results) and operation development as far as the current operating configuration of the reactor core. The physical start-up was commenced using a reactor core referred to as AZ A1, whose physical parameters had been verified by calculation and whose configuration was based on data tested experimentally on the SR-0 reactor at Vochov. The next operating core, labelled AZ A2, was already prepared during the test operation of the VR-1 reactor. Its configuration was such that both of the main horizontal channels, radial and tangential, could be employed. The configuration that followed, AZ A3, was an intermediate step before testing the graphite side reflector. The current reactor core, labelled AZ A3 G, was obtained by supplementing the previous core with a one-sided graphite side reflector. (Z.S.). 2 tabs., 11 figs., 2 refs

Optimisation of radiation protection for the new european pressurized water reactor (EPR)

International Nuclear Information System (INIS)

Miniere, D.; Beneteau, Y.; Le Guen, Bernard

2008-01-01

Full text: As part of the EPR (European Pressurized Reactor) project being deployed at Flamanville, EDF has pro actively made the decision to focus on radiation protection (RP) aspects right from the start of the design phase, as it has done with nuclear safety. The approach adopted for managing RP-significant activities has been to include all involved stake holders -designers, licensee and contractor companies- in the three successive phases, starting with a survey among workers and designers, followed by a proposal review, and finally ending with the decision-making phase entrusted to an ALARA committee. The RP target set by EDF for this new reactor is to engage in an effort of continuous improvement and optimisation, through benchmarking with the best performing plants of the fleet. The collective dose target is currently set at 0.35 man.Sv/year per unit. In addition to other aspects, efforts will focus on shortening the duration of the highest-dose jobs, with a new challenge being set for work performed in the reactor building during normal operations, the aim being to improve plant availability. The plan is for work to be performed 7 days prior to shutting down the reactor and 3 days afterwards, in order to make logistical arrangements for forthcoming jobs. Without this reduction, the estimated drop is currently 4.5% of annual dose. For this purpose, two areas have been set up in the EPR 's reactor building: one no-go area for containing leaks from the primary circuit, and one accessible area for normal operations, separated from the no-go area by purpose-built ventilation equipment and facilities. To offer protection against radioactive flux (neutrons and high energy), RP studies have resulted in the installation of a concrete floor and of nuclear shielding at the outlets of primary circuit pipes. Steam generator bunkers and pumps have also been reinforced. All these measures will ensure that the accessible area can be posted as a green area (dose rate < 25

Burnup measurements at the RECH-1 research reactor

International Nuclear Information System (INIS)

Henriquez, C.; Navarro, G.; Pereda, C.; Torres, H.; Pena, L.; Klein, J.; Calderon, D.; Kestelman, A.J.

2002-01-01

The Chilean Nuclear Energy Commission has decided to produce LEU fuel elements for the RECH-1 research reactor. During December 1998, the Fuel Fabrication Plant delivered the first four fuel elements, called leaders, to the RECH-1 reactor. The set was introduced into the reactor's core, following the normal routine, but performing a special follow-up on their behavior inside and outside the core. In order to measure the burn-up of the leader fuel elements, it was decided to develop a burn-up measurements system to be installed into the RECH-1 reactor pool, and to decline the use of a similar system, which operates in a hot cell. The main reason to build this facility was to have the capability to measure the burn-up of fuel elements without waiting for long decay period. This paper gives a brief description of the facility to measure the burn-up of spent fuel elements installed into the reactor pool, showing the preliminary obtained spectra and briefly discussing them. (author)

Mortality among active workers at EDF-GDF: social and occupational disparities and evolution

International Nuclear Information System (INIS)

Poncet, M.; Chevalier, A.; Bumsel, F.; Lahon, G.

2003-01-01

Background: Two studies, conducted in the eighties and the nineties, reported that mortality was lower- in the French national electric and gas company (EDF-GDF) the utility workers than in the general French Population. The purpose of our study was to compare the mortality of these 140.000 utility workers to that of the French population of the same age for the period from 1997 to 2001. Secondly we aimed to assess the disparities of mortality among the workforce according to demographic and socio-professional criteria. Finally, we analyzed the evolution of this mortality over the last twenty years. Methods: We undertook a cross-sectional study using the indirect standardization method. Results: Risk of death was lower in the utility workers than in the French Population (SMR=54% for men, and 58% for women). These differences had increased over the last twenty years for each main cause of death (cancers, cardio-vascular diseases and accidents). The reported excess of brain cancer death risk raises etiologic questions. Moreover; we noticed important social disparities in the workforce, increasing with tune. Conclusion: The well-known 'healthy worker effect' seems to be particularly important in the EDF-GDF company. The workers have a high level of living conditions and good working conditions, although internal social disparities persist. Further studies in other large corporations are greatly needed for comparisons. (author)

The taxation of unhealthy energy-dense foods (EDFs) and sugar-sweetened beverages (SSBs): An overview of patterns observed in the policy content and policy context of 13 case studies.

Science.gov (United States)

Hagenaars, Luc Louis; Jeurissen, Patrick Paulus Theodoor; Klazinga, Niek Sieds

2017-08-01

Taxation of energy-dense foods (EDFs) and sugar-sweetened beverages (SSBs) is increasingly of interest as a novel public health and fiscal policy instrument. However academic interest in policy determinants has remained limited. We address this paucity by comparing the policy content and policy context of EDF/SSB taxes witnessed in 13 case studies, of which we assume the tax is sufficiently high to induce behavioural change. The observational and non-randomized studies published on our case studies seem to indicate that the EDF/SSB taxes under investigation generally had the desired effects on prices and consumption of targeted products. The revenue collection of EDF/SSB taxes is minimal yet significant. Administrative practicalities in tax levying are important, possibly explaining why a drift towards solely taxing SSBs can be noted, as these can be demarcated more easily, with levies seemingly increasing in more recent case studies. Despite the growing body of evidence suggesting that EDF/SSB taxes have the potential to improve health, fiscal needs more often seem to lay their policy foundation rather than public health advocacy. A remarkable amount of conservative/liberal governments have adopted these taxes, although in many cases revenues are earmarked for benefits compensating regressive income effects. Governments voice diverse policy rationales, ranging from explicitly describing the tax as a public health instrument, to solely explicating revenue raising. Copyright © 2017 Elsevier B.V. All rights reserved.

A resilient, robust and active managing of a nuclear crisis is essential for the EDF group

International Nuclear Information System (INIS)

Delamare, V.

2016-01-01

As a producer, a transmission and a dispatcher company of electricity, the EDF group has to face technological and industrial risks. The EDF group has set up a robust organisation for managing nuclear crisis. As soon as an incident appears in a nuclear power plant the PUI is triggered, this emergency plan allows the mobilization of humane and equipment means necessary to bring back the plant to a safe state. Between 60 and 80 people on duty have to join back their post in less than one hour. The crisis is also managed at a national scale by the activation of 4 crisis cells situated in Paris: the operational cell that will bring extra humane and equipment means to the damaged facility if necessary, the communication cell dedicated to the information of the media, the strategic cell that will supervise the consequences of the incident in terms of technological, legal, financial or societal impacts and the anticipation cell that will be able to analyse the response to the crisis in a critical way making suggestions for the future. (A.C.)

EdF competing in the European electricity market. Interview with Francois Ailleret, Electricite de France, Paris

International Nuclear Information System (INIS)

Anon.

1996-01-01

The French nuclear power program was pushed through in order to reduce the country's dependence on imported fossil sources of energy. Nuclear power and hydro power have achieved a level of self-sufficiency in the energy sector of more than 50%. It should be emphasized that the French nuclear power program was largely self-financed. Electricite de France (EdF) considers itself well prepared for the European market, provided the creation of the single market implies that electricity rates are taken as a yardstick of competitiveness. Negotiations about a European directive on deregulating the electricity market were for the government to hold. EdF pleaded in favor of preserving for each country a certain leeway for shaping its own policy. The road to deregulation was to be opened, but the specific situation of each country was to be taken electricity to be passed through imposes narrow constraints upon an expansion of exchanges of electricity, and public acceptance is not very likely to be achieved for the construction of new international high voltage transmission lines. (orig.) [de

Computer-assisted training experiment used in the field of thermal energy production (EDF)

International Nuclear Information System (INIS)

Felgines, R.

1982-01-01

In 1981, the EDF carried out an experiment with computer-assisted training (EAO). This new approach, which continued until June 1982, involved about 700 employees all of whom operated nuclear power stations. The different stages of this experiment and the lessons which can be drawn from it are given the lessons were of a positive nature and make it possible to envisage complete coverage of all nuclear power stations by computer-assisted training within a very short space of time [fr

Decontamination experience using the EMMAC process in EDF nuclear power plants

International Nuclear Information System (INIS)

Noel, D.; Spychala, H. B.; Dupin, M.; Lantes, B.; Goulain, F.; Gregoire, J.; Jeandrot, S.

1997-01-01

The EMMA, EMMAC and EMMAC-PLUS decontamination processes, nondestructive tests and waste treatment are presented. The various applications of the new EMMAC soft decontamination process, used by EDF since 1995 have shown that it is a very effective tool and at the same time, is a very low corrosive process for the materials that have been treated . The improved efficiency, compared to the previous EMMA process allowed us to obtain good decontamination factors with only one cycle instead of two. At the same time, changes in chemical composition and waste treatment produced large reduction in the amount of radioactive wastes generated. Further improvements are still being sought. (authors)

Training and research on the nuclear reactor VR-1

International Nuclear Information System (INIS)

Matejka, K.

1998-01-01

The VR-1 training reactor is a light water reactor of the pool type using enriched uranium as the fuel. The moderator is demineralized light water, which also serves as the neutron reflector, biological shielding, and coolant. Heat evolved during the fission process is removed by natural convection. The reactor is used in the education of students in the field of reactor and neutron physics, dosimetry, nuclear safety, and instrumentation and control systems for nuclear facilities. Although primarily intended for students in various branches of technology (power engineering, nuclear engineering, physical engineering), this specialized facility is also used by students of faculties educating future natural scientists and teachers. Typical tasks trained at the VR-1 reactor include: measurement of delayed neutrons; examination of the effect of various materials on the reactivity of the reactor; measurement of the neutron flux density by various procedures; measurement of reactivity by various procedures; calibration of reactor control rods by various procedures; approaching the critical state; investigation of nuclear reactor dynamics; start-up, control and operation of a nuclear reactor; and investigation of the effect of a simulated nucleate boil on reactivity. In addition to the education of university-level students, training courses are also organized for specialists in the Czech nuclear programme

EDF's new environment-oriented method for planning the Extra High Voltage transmission network

International Nuclear Information System (INIS)