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Sample records for bohunice plant

  1. Bituminization plant Jaslovske Bohunice

    International Nuclear Information System (INIS)

    In this leaflet the principle of the bituminization plant for radioactive concentrate (the intermediate liquid radioactive waste generated during the NPP A1, V-1, V-2 operations) solidification used in the Bohunice Radwaste Treatment Centre (BSC RAO) is presented

  2. Bohunice Nuclear Power Plant Safety Upgrading Program

    International Nuclear Information System (INIS)

    Bohunice nuclear Power Plant generation represents almost 50% of the Slovak republic electric power production. Due to such high level of commitment to nuclear power in the power generation system, a special attention is given to safe and reliable operation of NPPs. Safety upgrading and operational reliability improvement of Bohunice V-1 NPP was carried out by the Bohunice staff continuously since the plant commissioning. In the 1990 - 1993 period extensive projects were realised. As a result of 'Small Reconstruction of the Bohunice V-1 NPP', the standards of both the nuclear safety and operational reliability have been significantly improved. The implementation of another modifications that will take place gradually during extended refuelling outages and overhauls in the course of 1996 through 1999, is referred to as the Gradual Reconstruction of the Bohunice V-1 Plant. The general goal of the V-1 NPP safety upgrading is the achievement of internationally acceptable level of nuclear safety. Extensive and financially demanding modification process of Bohunice V-2 NPP is likely to be implemented after a completion of the Gradual Reconstruction of the Bohunice V-1 NPP, since the year 1999. With this in mind, a first draft of the strategy of the Bohunice V-2 NPP upgrading program based on Probabilistic Safety assessment consideration was developed. A number of actions with a general effect on Bohunice site safety is evident. All these activities are aimed at reaching the essential objective of Bohunice NPP Management - to ensure a safe, reliable and effective electric energy and heat generation at the Bohunice site. (author)

  3. Safety first. Nuclear power plant in Jaslovske Bohunice

    International Nuclear Information System (INIS)

    In this leaflet the production of electricity in nuclear power plants, philosophy of nuclear safety with reactor WWER, influence of ionization radiation on the man, improvement on the reactor, reconstructed system on the Bohunice V-1 reactors, nuclear reactor WWER, nuclear fuel and fission reaction, are described. A briefly history of Bohunice V-1 NPP is presented

  4. Safety culture at the Bohunice nuclear power plant

    International Nuclear Information System (INIS)

    The approach of the Bohunice nuclear power plant to the safety culture issue is highlighted. Activities performed so far at the plant to improve the plant safety culture with a view to enhancing the awareness of each employee and thus to minimize the effect of the human factor on the evolution of incidents and accidents at the plant are described. (author)

  5. Seismic evaluation and strengthening of Bohunice nuclear power plant structures

    International Nuclear Information System (INIS)

    A seismic assessment and strengthening investigation is being performed for selected structures at the Bohunice V1 Nuclear Power Plant in Slovakia. Structures covered in this paper include the reactor building complex and the emergency generator station. The emergency generator station is emphasized in the paper as work is nearly complete while work on the reactor building complex is ongoing at this time. Seismic evaluation and strengthening work is being performed by a cooperative effort of Siemens and EQE along with local contractors. Seismic input is the interim Review Level Earthquake (horizontal peak ground acceleration of 0.3 g). The Bohunice V1 reactor building complex is a WWER 4401230 nuclear power plant that was originally built in the mid-1970s but had extensive seismic upgrades in 1991. Siemens has performed three dimensional dynamic analyses of the reactor building complex to develop seismic demand in structural elements. EQE is assessing seismic capacities of structural elements and developing strengthening schemes, where needed. Based on recent seismic response analyses for the interim Review Level Earthquake which account for soil-structure interaction in a rigorous manner, the 1991 seismic upgrade has been found to be inadequate in both member/connection strength and in providing complete load paths to the foundation. Additional strengthening is being developed. The emergency generator station was built in the 1970s and is a two-story unreinforced brick masonry (URM) shear wall building above grade with a one story reinforced concrete shear wall basement below grade. Seismic analyses and testing of the URM walls has been performed to assess the need for building strengthening. Required structural strengthening for in-plane forces consists of revised and additional vertical steel framing and connections, stiffening of horizontal roof bracing, and steel connections between the roof and supporting walls and pointing of two interior transverse URM

  6. Experience with applying the automated control system to maintenance at the Bohunice nuclear power plant

    International Nuclear Information System (INIS)

    The automated system of maintenance control at the V-1 nuclear power plant at Jaslovske Bohunice uses experience gained with the maintenance of the A-1 nuclear power plant. With regard to the range of work operations, maintenance includes inspection, routine repair, overhaul of equipment and replacement. Also observed is the classification of equipment according to whether it may be repaired without reactor shutdown or whether the reactor will have to be shut down. At present the maintenance of the Jaslovske Bohunice nuclear power plant is being processed by an automated control system into five year variable plans of repairs, annual and monthly plans of repairs, plans of shut-downs and a schedule of unit shutdowns. The repair plan includes over 6000 items. (Z.M.)

  7. Long-term corrosion study at nuclear power plant Bohunice (Slovakia)

    Science.gov (United States)

    Slugen, V.; Lipka, J.; Dekan, J.; Tóth, I.; Smieško, I.

    2010-03-01

    Steam generators of four VVER-440 units at nuclear power plants V-1 and V-2 in Jaslovske Bohunice (Slovakia) were gradually changed by new original "Bohunice" design in period 1994-1998. Corrosion processes before and after these design and material changes in Bohunice secondary circuit were studied using Mössbauer spectroscopy during last 25 years. Innovations in the feed water pipeline design as well as material composition improvements were evaluated positively. Mössbauer spectroscopy studies of phase composition of corrosion products were performed on real specimens scrapped from water pipelines or in form of filter deposits. The corrosion of new feed water pipelines system (from austenitic steel) in combination to innovated operation regimes goes dominantly to magnetite. The hematite presence is mostly on the internal surface of steam generator body and its concentration increases towards the top of the body. In the results interpretation it is necessary to consider also erosion as well as scope and type of maintenance activities. The long-term study of phase composition of corrosion products at VVER reactors is one of precondition for the safe operation over the projected NPP lifetime.

  8. Reconstruction of the V-1 nuclear power plant at Jaslovske Bohunice

    International Nuclear Information System (INIS)

    Based on the 1991 recommendation by the former Czechoslovak nuclear regulatory body - the Czechoslovak Atomic Energy Commission - the minor reconstruction of the V-1 nuclear power plant at Jaslovske Bohunice was aimed at safety improvement in the following fields: reactor pressure vessel and primary circuit integrity, hermetic compartments, instrumentation and control systems and accident protection systems, home consumption electrical systems, fire safety, seismic resistance, and reactor aftercooling in case of steam generator feedwater failure. The results of the reconstruction are presented. The reconstruction provided for all the recommendations. (J.B.). 2 tabs

  9. Environment monitoring and residents health condition monitoring of nuclear power plant Bohunice region

    International Nuclear Information System (INIS)

    The report contents final environment evaluation and selected characteristic of residents health physics of nuclear power plant Bohunice region. Evaluated data were elaborated during analytical period 1993-1997.Task solving which results are documented in this final report was going on between 1996- 1998. The report deals in individual stages with the following: Information obtaining and completing which characterize demographic situation of the area for the 1993-1997 period; Datum obtaining and completing which contain selected health physics characteristics of the area residents; Database structures for individual data archiving from monitoring and collection; Brief description of geographic information system for graphic presentation of evaluation results based on topographic base; Digital mapping structure description; Results and evaluation of radionuclide monitoring in environment performed by Environmental radiation measurements laboratory by the nuclear power plant Bohunice for the 1993-1997 period. Demographic situation evaluation and selected health physics characteristics of the area of nuclear power plant residents for the 1993-1997 period are summarized in the final part of the document. Monitoring results and their evaluation is processed in graph, table, text description and map output forms. Map outputs are processed in the geographic information system Arc View GIS 3.0a environment

  10. What the A-1 nuclear power plant at Jaslovske Bohunice brought and left to experts, the economy and the environment

    International Nuclear Information System (INIS)

    The construction history is outlined of A-1 at Jaslovske Bohunice, the first Czechoslovak nuclear power plant. Characteristic operating data of the plant in 1972-1977 are presented. The period following the second accident at the plant and its final shutdown is described. The adverse environmental impacts of the plant are characterized. A safe decommissioning of the plant is a problem that remains to be solved. (J.B.)

  11. Modernization of Nuclear Power Plant V2 Bohunice in Slovak Republic

    International Nuclear Information System (INIS)

    After successful completion of extensive Gradual Reconstruction (1996-2000) of Nuclear Power Plant V1 (2 x VVER440/V230), there started modernisation project of Nuclear Power Plant V2 (2 x VVER440/V213) in the site Jaslovske Bohunice with planned completion in the year 2008. The main goal and priority of NPP V2 modernisation programme is to increase safety and reliability of the operation, but also to create conditions for extension of the operating life and economy improvement of NPP V2 operation. NPP V2 units in Jaslovske Bohunice were commissioned in the year 1984 and 1985. In the year 1997, management of Slovenske Elektrarne approved goals of modernisation programme and safety increasing of NPP V2. At modernisation programme defining, there were taken into consideration results of safety assessment and recommendations for improvement of NPP with VVER 440/V213 processed within the projects IAEA, WANO, VUJE and the other organisations which have had experiences with the operation of NPP with VVER reactors (basic documents: Safety report NPP V2 after 10 years of operation, VUJE, 1993, Safety issue and their ranking for nuclear power plants WWER 440/V213 type, IAEA, 1996, Safety improvements of NPP V2 and design of their solution, VUJE, 1997). Detail range, content and schedule of programme implementation were elaborated by VUJE in the year 2001. VUJE worked out solution designs into the level of project requirements (Conceptual Design) in the document: 'Safety concept for modernisation and safety increasing of NPP V2' Modernisation works are implemented mainly in I and C and electro part, works in nuclear systems and the civil part are implemented in smaller range. Implementation works in modernisation project are realized mainly during planned units outages for refuelling. VUJE as the general designer provides elaboration of design documentation, safety documentation; support of general contractor and it is responsible for overall coordination and functionality

  12. Thirtieth anniversary of reactor accident in A-1 Nuclear Power Plant Jaslovske Bohunice

    International Nuclear Information System (INIS)

    The facts about reactor accidents in A-1 Nuclear Power Plant Jaslovske Bohunice, Slovakia are presented. There was the reactor KS150 (HWGCR) cooled with carbon dioxide and moderated with heavy water. A-1 NPP was commissioned on December 25, 1972. The first reactor accident happened on January 5, 1976 during fuel loading. This accident has not been evaluated according to the INES scale up to the present time. The second serious accident in A-1 NPP occurred on February 22, 1977 also during fuel loading. This INES level 4 of reactor accident resulted in damaged fuel integrity with extensive corrosion damage of fuel cladding and release of radioactivity into the plant area. The A-1 NPP was consecutively shut down and is being decommissioned in the present time. Both reactor accidents are described briefly. Some radioecological and radiobiological consequences of accidents and contamination of area of A-1 NPP as well as of Manivier Canal and Dudvah River as result of flooding during the decommissioning are presented (authors)

  13. Experience in modernization of safety I and C in VVER 440 nuclear power plants Bohunice V1 and Paks

    International Nuclear Information System (INIS)

    For nuclear power plants which have been in operation for more than 15 years, backfitting or even complete replacement of the instrumentation and control (I and C) equipment becomes an increasingly attractive option, motivated not only by the objective to reduce the cost of I and C system maintenance and repair but also to prolong or at least to safeguard the plant life-time: optimized spare-part management through use of standard equipment; reduction of number and variety of different items of equipment by implementing functions stepwise in application software; adding new functionality in the application software which was not possible in the old technology due to lack of space; safeguarding of long-term After-Sales-Service. Some years ago Bohunice V1 NPP, Slovak Republic and Paks NPP, Hungary intended to replace parts of their Safety I and C, mainly the Reactor Trip System, the Reactor Limitation System and the Neutron Flux Excore Instrumentation and Monitoring Systems. After a Basic Engineering Phase in Bohunice V1 and a Feasibility Study in Paks both plants decided to use the Siemens' Digital Safety I and C System TELEPERM XS to modernize their plants. Both Bohunice, Unit 2 and Paks, Unit 1 have been back on line for over six months with the new Digital Safety I and C. At the present time Bohunice, Unit 1 and within the next few months Paks, Unit 2 will be replaced. Trouble-free start-ups and no major problems under operation in the first two plants were based on: thorough understanding of the VVER 440 technology; comprehensive planning together with the plant operators and authorities; the possibility to adapt TELEPERM XS to every plant type; the execution of extensive pre-operational tests. Regarding these modernization measures Siemens, as well as the above Operators, have gained considerable experience in the field of I and C Modernization in VVER 440 NPPs. Important aspects of this experience are: how to transfer the VVER technology to TELEPERM XS; how to

  14. Safety upgrading of Bohunice V1 NPP

    International Nuclear Information System (INIS)

    This CD is multimedia presentation of programme safety upgrading of Bohunice V1 NPP. It consist of next chapters: (1) Introductory speeches; (2) Nuclear power plant WWER 440; (3) Safety improvement; (4) Bohunice Nuclear power plants subsidiary; (5) Siemens; (6) REKON; (7) VUJE Trnava, Inc. - Engineering, Design and Research Organisation; (8) Album

  15. Implementation of results of science and technology development project ''Automated system of nuclear power plant control'' at the Bohunice plant

    International Nuclear Information System (INIS)

    The implementation of the automated control system at the Jaslovske Bohunice nuclear power plant is taking place in two stages. In the first stage the main computer centre was built with an ES 1055 M computer which has been in operation since January 1985. In the following year, 6 local network terminals of type ES 7927 were installed and one multiplexer ES 8371 for the control of the network. All the equipment operates reliably, the ES 7039 printers are not so reliable. The weakest element are large-size magnetic disc memories. In the next stage, the construction is envisaged of a terminal network with SM 4-20 and SM 52/11 computers and 7202 terminals. The contribution of the implementation of computer technology so far has been in the field of maintenance where it has allowed to centrally plan repairs of some 15,000 items and to coordinate the activities of sub-contractors. Also positive are results in the field of measurement and control technology where the reliability is being evaluated of some 20,000 measurement circuits and elements, and their preventive maintenance and repairs planned. Briefly summed up are items for further increasing the contribution of the deployment of computer technology in nuclear power plants. (Z.M.)

  16. Lifetime evaluation of Bohunice NPP components

    International Nuclear Information System (INIS)

    The paper discuss some aspects of the main primary components lifetime evaluation program in Bohunice NPP which is performed by Nuclear Power Plant Research Institute (NPPRI) Trnava in cooperation with Bohunice and other organizations involved. Facts presented here are based on the NPPRI research report which is regularly issued after each reactor fuel campaign under conditions of project resulted from the contract between NPPRI and Bohunice NPP. For the calculations, there has been used some computer codes adapted (or made) by NPPRI and the results are just the conclusive and very brief, presented here in Tables (Figures). (authors)

  17. Nuclear power plant (A-1 NPP) SE a.s., Bohunice A-1

    International Nuclear Information System (INIS)

    The A-1 NPP was connected to the grid on 25 December 1972. The first serious refuelling accident happened on 5 April 1976. The second accident occurred on 22 February 1977 when a fouled fuel assembly was overheated, melted, and consequently radioactivity entered the whole primary circuit of steam generators, and a portion of it also leaked into the secondary circuit. The accident was classified as INES 4 level. There were no leaks of radioactivity into environment during the accident. A programme and schedule of bringing the A-1 NPP into a radiation-safe status was precise by subsequent decrees of the Slovak Government in 1993-1994. In January 1995, the Project was submitted to Nuclear Regulatory Authority of the Slovak Republic (NRA SR) and updated schedule of works was approved by the Government of the Slovak Republic. The radiation-safe status is characterised by minimizing of excluding a risk of negative environmental impacts of a NPP. There were 439 of total of 571 spent fuel assemblies transported to the former Soviet Union in 1984 through 1990. The remaining 132 assemblies are 'difficult-to-handle', ones the assemblies can not be taken out of their cases. Current solution the activities associated with transport and improvement of a safe storage of the spent fuel, issues related to processing, treatment, and storage of liquid radioactive wastes is represented by Bohunice treatment centre that has been built since 1993. In addition to Slovak partners, there are also foreign ones who are involved in bringing A-1 NPP into a radiation-safe status. The largest share of works is taken by British AEA Technology together with SGN, France. Other European countries are involved in A-1 NPP decommissioning, too, by providing technical assistance within PHARE programmes. Japan also provides funding of a broad programme of information exchange about NPPs decommissioning. Activities of nuclear safety inspectors were performed according to NRA SR yearly plan of inspection

  18. Findings from measurement of vertical displacement of V-1 nuclear power plant buildings in Jaslovske Bohunice

    International Nuclear Information System (INIS)

    Vertical displacements were measured of the foundations and of selected bearing structures of the V-1 nuclear power plant buildings during the plant's construction and operation. Measured were displacements of the engine room foundations, the reactor building, the boron management building, the turbogenerator building, the cooling towers, the ventilation stack, and the foundations of buildings showing adverse properties. Some results are presented. (E.J.). 4 figs., 2 refs

  19. Information letter 2. Information about operation of plants SE-NPP Bohunice and SE-VYZ during February 2005

    International Nuclear Information System (INIS)

    In this leaflet results of exploitation of four units of the Bohunice V-1 and V-2 NPPs are presented. The electricity and heat production in February 2005 are reviewed. Within a February 2005 the electricity was produced: 217 GWh (block 1), 281 GWh (block 2), 277 GWh (block 3), 282 GWh (block 4), totally 1057 GWh, and 2271 GWh within a January - February 2005. The heat production in February 2005 was 266 506 GJ, and within a January - February 2005 it was produced 531 849 GJ of heat. On February 17 Slovak minister of economy Pavol Rusko and general director of ENEL Paolo Scaroni signed the agreement on acquisition of 66 per cent of Slovenske elektrarne (SE) by Italian ENEL for 840 million Eur. SE has capacity of around 7 GW (83 per cent of total Slovakian capacity). In 2004 SE generated 26 TWh of electricity. Processing and storage of radioactive wastes in Decommissioning of Nuclear Installations and Spent Fuel and Rad-waste Management (SE-VYZ) is presented. Since beginning of this year 58 fibre-concrete containers have been filled up in Bohunice processing centre of radioactive wastes. Twenty-three pieces of fibre-concrete containers were processed into fibre-concrete containers in Bohunice processing centre of radioactive wastes (BSC RAO) in February 2005. Twenty fibre-concrete containers were stored into Republic storage of radioactive wastes (RU RAO). Total number in RU RAO reached 830 pieces of fibre-concrete containers, which represent 11.53 per cent of storage capacity (7200 containers). Bohunice processing centre of radioactive wastes was put into active operation just before five years

  20. Bohunice V-1 and V-2 approach for achieving high availability, reliability and safety

    International Nuclear Information System (INIS)

    Long term operating experience of Bohunice units maintenance activities are overviewed in the paper. Based on common experience of WWER NPP operators, separate maintenance department was established at Bohunice NPP in very early stage of plant operation. Maintenance management, maintenance planning, outage management, diagnostics and monitoring, inspection technologies and backfitting activities are described particularly to demonstrate the capability of Bohunice maintenance department for most complex repairs and maintenance works of nuclear power plant components and equipment, including reactor and turbine itself. (author)

  1. Personnel education and training at Bohunice NPP

    International Nuclear Information System (INIS)

    Procedure for education and training of all the personnel employed at Bohunice Nuclear power plant is presented in detail describing the training system structure, kinds of training, staff members qualification development, short term and long term tasks needed to assure attaining the training objectives. The proposed Staff Members Lifetime education implementation project contains basic starting points, measures to be implemented by 1998. It was prepared on the basis of a primary analysis which confirmed the existing need for implementing the lifetime education system

  2. Design basis and design features of WWER-440 model 213 nuclear power plants. Reference plant: Bohunice V2 (Slovakia)

    International Nuclear Information System (INIS)

    The prime objective of the IAEA Technical Co-operation Project on Evaluation of Safety Aspects of WWER-440 model 213 NPPs is to co-ordinate and to integrate assistance to national organizations in studying selected aspects of safety for the same type of reactors. Consequently, the study integrated the results generated by national activities carried out in the Czech Republic, Hungary, Slovakia and Ukraine and co-ordinated through the IAEA. Valuable assistance in carrying out the tasks was also provided by Bulgaria and Poland. A set of publications is being prepared to present the results of the project. The publications are intended to facilitate the review and utilization of the results of the project. They are also providing assistance in further refinement and/or extension of plant specific safety evaluation of model 213 NPPs. This Technical Document addressing the design basis and safety related design features of WWER-440 model 213 plants is the first of the series to be published. It is hoped that this document will be useful to anyone working in the field of WWER safety, and in particular to experts planning, executing or reviewing studies related to the subject. Refs, 36 figs, tabs

  3. 30th and 29th anniversary of reactor accidents in A-1 nuclear power plant Jaslovske Bohunice - radioecological and radiobiological consequences

    International Nuclear Information System (INIS)

    In this paper authors present facts about construction, operation and reactor accidents in A-1 Nuclear Power Plant Jaslovske Bohunice, Slovakia. There was the reactor KS 150 (HWGCR) cooled with carbon dioxide and moderated with heavy water. A-1 NPP was commissioned on December 25, 1972. The first reactor accident happened on January 5, 1976 during fuel loading. Two persons of personal died by suffocation with carbon dioxide. This accident has been not evaluated according to the INES scale up to present time. The second serious accident in A-1 NPP occurred in February 22, 1977 also during fuel loading. This INES level 4 of reactor accident resulted in damaged fuel integrity with extensive corrosion damage of fuel cladding and release of radioactivity into the plant area. The A-1 NPP was consecutively shut down and is being decommissioned in the present time. Both reactor accidents are described in this paper. Some radioecological and radiobiological consequences of accidents and contamination of area of A-1 NPP as well as of Manivier canal and Dudvah River as result of flooding during the decommissioning are presented. (authors)

  4. Modernization and safety improvement project of the NPP V-2 Jaslovske Bohunice

    International Nuclear Information System (INIS)

    The contribution deals with form, present state and results of Nuclear Power Plants Research Institute (the Slovak acronym is VUJE - Vyskumny Ustav Jadrovych Elektrarni) participation in the NPP V-2 Jaslovske Bohunice Modernization and Safety Improvement Project. Short description of VUJE history, activity and results is also done as well as NPPs Jaslovske Bohunice characterization. (authors)

  5. Risk monitor for unit 3 of the Jaslovske Bohunice V2 nuclear power plant at the full power and for the shut-down reactor

    International Nuclear Information System (INIS)

    The EOOS (Equipment Out Of Service) Monitor is part of the Risk and Reliability Workstation software package developed by EPRI. The software package was provided to the Jaslovske Bohunice NPP and the Slovak Nuclear Regulatory Authority within a contract with the US Department of Energy (DOE). A risk monitor for unit 3 of the Jaslovske Bohunice V2 NPP was developed by integration of a PSA model into the EOOS monitor. The paper describes the monitor and its application to risk monitoring during full power operation and reactor shutdown. (author)

  6. The human factor and the part it plays in failures of the normal operation of water-cooled, water-moderated WWER-440 reactors at the Bohunice nuclear power plant

    International Nuclear Information System (INIS)

    The paper presents the findings of a study of the role of the human factor based on the results of the first four years of operation of the Bohunice B-1 nuclear power plant. It describes the method by which plant personnel are trained and the system of maintaining the level of staff skills. It is expected that there will be an improvement in the quality of personnel training and that an analysis of the role of the human factor will be made in the course of subsequent operation. (author)

  7. Experience of Bohunice V-1 NPP

    International Nuclear Information System (INIS)

    Slovakia remains significantly dependent on imports of primary energy sources, which represent as much as 80% of the demand. Of the total consumption of electricity in Slovakia, 40% was generated in nuclear power plant units in 1998. Slovakia operates 6 units with WWER 440 nuclear reactors. Slovakia is the signatory of all important international agreements and conventions in the field of nuclear energy, and its legislation is in an advanced stage of approximation to European Union law. This is a very important aspect, showing Slovakia's approach to nuclear safety. In 1993 Slovakia accepted the commitments of the UN Convention on Climate Changes, including a reduction of greenhouse gases to 1990 levels by the year 2000. Moreover, as an internal target Slovakia has set the reaching of the 'Toronto Objective', i.e. 20% reduction in COx, emissions through the year 2005 as compared to 1988. In our opinion, this is not possible without nuclear energy. Time has shown, that the political aspects are more powerful, especially if you underestimate their importance over the than the technical ones. In the case of Bohunice V-1 NPP the political aspects were on the following levels: 1. Slovak republic (Czechoslovakia), political changes, decisions of the government; 2. European Union - Agenda 2000, Accession criteria, nuclear safety criteria, EBRD; 3. Austria as a neighbouring country. Starting with year 1990, 23 expert missions took place at Bohunice V-1 NPP by now. The only criteria for further operation should have been Nuclear safety, which is supervised by NRA SR. It was fully in compliance with EU policy, each country is solely responsible for its energy sector and for nuclear energy use. Our satisfaction lasted not too long. Following negotiation with EU on the highest political level, driven by willingness to be invited for negotiation of accession on the Helsinki Summit, the Slovak government decided on September 14th, on Bohunice V-1 Units shutdown in 2006 and 2008

  8. Internal communication at Bohunice NPPs

    International Nuclear Information System (INIS)

    Communication is the base of everyday existence of a modern person and every company. It is not easy to work in this area in a changing 'eastern' country. Many tools, which are used are in the mind of people connected with 'propaganda'. I would like to share our experience with you. The goal of an internal communication is to spread and provide continuous current of objective information between the management of Bohunice NPPs and its personnel and between the personnel itself. Communication with the Bohunice NPPs employees helps to get acquainted with their opinions and ideas concerning the subsidiary and nuclear power industry

  9. Radwaste Treatment Centre Jaslovske Bohunice

    International Nuclear Information System (INIS)

    In this leaflet the Bohunice Radwaste Treatment Centre (BSC RAO) is presented. BSC RAO is designed to process and treat liquid and solid radwaste, arising from the NPP A-1 decommissioning, from NPPs V-1, V-2, and Mochovce operations, as well as institutional radwaste of diverse institutional (hospitals, research institutes) in the Slovak Republic. Transport, sorting, incineration, compacting, concentration and cementation of radwaste as well as monitoring of emission are described

  10. Early closure of Bohunice V1 contested

    International Nuclear Information System (INIS)

    The early closure of the Bohunice V1 nuclear power plant following a time schedule that the Slovak government agreed with the EU three years ago is a political obligation of the government. The only objections to this plan so far have been related to the weakening of the generation base and economy of Slovenske elektrarne (SE), a.s. Neither the Nuclear Regulatory Authority of the Slovak Republic, nor the International Atomic Energy Agency, nor foreign experts preparing the closure of V1 in Jaslovske Bohunice have raised objections relating to increased security risks. Since he took up office last summer, the Minister of Economy Pavol Rusko has not hidden his personal interest in revising the agreement and extending the operation of the nuclear power plant. The fact that closing the power plant would have a negative impact on Slovakia's economy is not an argument good enough to persuade the original EU members. A proven security risk would be a better argument, especially as the operation of the V1 plant would not be extended literally - rather one of the reactors would work two years longer. Risk increased by 100%, a risk close to the level of acceptability in the EU - that is how in October he described the risks related to closure of V1 units according to the agreed time schedule, i.e. the first unit to be shut down by December 31, 2006 at the latest and the second unit by December 2008. The Minister based his opinion on a study prepared by the engineering and consulting company - Relko that assessed the risks V1 would represent after the first unit has been shut down. 'The only solution is to shut down both units at the same time', he concluded and in a comment addressed to the EU he added: 'If the EU has sincere intentions towards Slovakia, respects its security and does not wish it economic problems it will accept this'. (author)

  11. Final results of the gradual reconstruction of Bohunice VI in Slovakia and evaluation of the reconstruction by international missions

    International Nuclear Information System (INIS)

    The gradual reconstruction of the Bohunice V1 nuclear power plant (Slovakia) represents the most extensive reconstruction of a nuclear power plant in operation as implemented worldwide up to now. Extensive reconstruction works in both civil construction and process parts, in instrumentation and control part, and in electric part enhanced both nuclear safety and operational reliability of Bohunice V1 in a significant way.(author)

  12. Fuel reliability of Bohunice NPP

    International Nuclear Information System (INIS)

    Paper summarizes experience from last 15 years of operation at NPP Jaslovske Bohunice. During this period, leaking fuel assemblies have had been identified by in-core sipping method and verified by vendor specified canister sipping method. Methodology of operational and outage fuel integrity monitoring is described. Full survey of identified leaking assemblies is given. Fuel failure rates are calculated separately for V-1 (V-230 type) and V-2 (V-213 type) units. Systematic difference - significantly lower fuel failure rate at V-213 units exists for all period investigated. Analysis of potential fuel failure reasons and all related measures (planned and already implemented) are presented. Design, operation and fabrication features have been analyzed with the aim to identify dominant factors contributing to fuel failure. No unambiguous reasons have been found so far. It is believed that there is a superposition of several factors and differences causing higher failure rate at V-230 type units. (author)

  13. Safety enhancement in NPP Bohunice

    International Nuclear Information System (INIS)

    The upgrading and safety enhancement of both the Bohunice V-1 and V-2 reactors is described in detail. The total estimated cost of the gradual reconstruction of these two units during 1996 to 1999 is 180 mil. US dollars. For the 1995 to 1997 period, the actions common for both units include a quality assurance programme, a personnel training programme, installation of a multifunction simulator, implementation of symptom-oriented operation procedures, installation of diagnostic systems, of a site security system, and of a teledosimetric system. At present, the main maintenance tasks are: to carry out major repair of units, to remedy service interruptions, to enhance equipment service availability, to enhance the technical level of corrective actions at equipment. Investment into maintenance level upgrade has grown from 7.5 mil. Slovak crowns in 1994 to estimated 32 mil. in 2000. The partners of international cooperation are mentioned. (M.D.)

  14. Eco information 5. Influence of operation of the plants Jadrova vyradovacia spolocnost, a.s., on the environment, locality of Bohunice, within May 2013

    International Nuclear Information System (INIS)

    In this leaflet the results of monitoring of chemical gaseous and liquid effluents into the Vah River and Dudvah River as well as of radiation monitoring of Bohunice V1 NPP, Interim Spent Fuel Storage (MSVP), Bohunice Radioactive Waste Processing Centre (VK808 - BSC), The Main Production Unit (VK 46A - HVB) and Bitumenation Lines (VK 46B - BL) are presented. The radioactive effluents into atmosphere within January - May 2013 (for NPP V1, MSVP, BSC, HVB and BL, respectively) were: 0.138 MBq (0.000% of AL) for V1, 0.194 MBq (0.065 of AL) for MSVP, 0.192 MBq (0.136% of AL) for BSC, 0.470 MBq (0.071% of AL) for HVB and 0.168 MBq (0.119% of AL) for BL of aero-soles. The radioactive effluents into atmosphere and hydrosphere within a May 2013 for NPP V1, MSVP, and VK 808 BSC, respectively, were: 0.024 MBq (V1), 0.055 MBq (VK MSVP), 0.070 MBq (VK 808 BSC), 0.074 MBq (VK 46A) and 0.011 MBq (VK 46B) of aero-soles into atmosphere; 1.249 MBq (V1 and MSVP) and 6.744 MBq (TSU RAO and NPP A1) of corrosive and fission products, and 5.723 GBq (V1 and MSVP) and 5.744 GBq (TSU RAO and NPP A1) of tritium into the Vah River and 0.000 GBq (V1 and MSVP) and 0.000 MBq (TSU RAO and NPP A1) of corrosive and fission products and 0.000 GBq of tritium (V1) and 0.000 GBq of tritium (TSU RAO and NPP A1) into the Dudvah River). For the period January - May 2013 these radioactive effluents into recipient of Vah River represent for corrosive and fission products 5.653 MBq (0.043% of AL for V1 and MSVP) and 34.953 MBq (0.291% of AL for TSU RAO and MSVP); and for tritium it is 8.397 GBq (0.420% of AL) for V1 and MSVP, and 31.661 GBq (0.317% of AL) for TSU RAO and NPP A1 (into the Vah River) and for corrosive and fission products 0.000 MBq (V1 and MSVP) and 0.000 MBq (TSU RAO and NPP A1) (0.000% of AL) and 0.000 GBq (0.000% of AL) for V1 and MSVP and 0.000 GBq (0.000% of AL) (TSU RAO and NPP A1) of tritium (into the Dudvah River). Chemical effluents are reported, too.

  15. Seismic re-evaluation criteria for Bohunice V1 reconstruction

    International Nuclear Information System (INIS)

    Bohunice V1 in Slovakia is a Russian designed two unit WWER 440, Model 230 Pressurized Water Reactor. The plant was not originally designed for earthquake. Subsequent and ongoing reassessments now confirm that the seismic hazard at the site is significant. EBO, the plant owner has contracted with a consortium lead by Siemens AG (REKON) to do major reconstruction of the plant to significantly enhance its safety systems by the addition of new systems and the upgrading of existing systems. As part of the reconstruction, a complete seismic assessment and upgrading is required for existing safety relevant structures, systems and components. It is not practical to conduct this reassessment and upgrading using criteria applied to new design of nuclear power plants. Alternate criteria may be used to achieve adequate safety goals. Utilities in the U.S. have faced several seismic issues with operating NPPs and to resolve these issues, alternate criteria have been developed which are much more cost effective than use of criteria for new design. These alternate criteria incorporate the knowledge obtained from investigation of the performance of equipment in major earthquakes and include provisions for structures and passive equipment to deform beyond the yield point, yet still provide their essential function. IAEA has incorporated features of these alternate criteria into draft Technical Guidelines for application to Bohunice V1 and V2. REKON has developed plant specific criteria and procedures for the Bohunice V1 reconstruction that incorporate major features of the U.S. developed alternate criteria, comply to local codes and which envelop the draft IAEA Technical Guidelines. Included in these criteria and procedures are comprehensive walkdown screening criteria for equipment, piping, HVAC and cable raceways, analytical criteria which include inelastic energy absorption factors defined on an element basis and testing criteria which include specific guidance on interpretation

  16. Decommissioning Project of Bohunice A1 NPP

    International Nuclear Information System (INIS)

    The first (pilot) nuclear power plant A1 in the Slovak Republic, situated on Jaslovske Bohunice site (60 km from Bratislava) with the capacity of 143 MWel, was commissioned in 1972 and was running with interruptions till 1977. A KS 150 reactor (HWGCR) with natural uranium as fuel, D2O as moderator and gaseous CO2 as coolant was installed in the A1 plant. Outlet steam from primary reactor coolant system with the temperature of 410 C was led to 6 modules of steam generators and from there to turbine generators. Refueling was carried out on-line at plant full power. The first serious incident associated with refueling occurred in 1976 when a locking mechanism at a fuel assembly failed. The core was not damaged during that incident and following a reconstruction of the damaged technology channel, the plant continued in operation. However, serious problems were occurring with the integrity of steam generators (CO2 gas on primary side, water and steam on secondary side) when the plant had to be shut down frequently due to failures and subsequent repairs. The second serious accident occurred in 1977 when a fuel assembly was overheated with a subsequent release of D2O into gas cooling circuit due to a human failure in the course of replacement of a fuel assembly. Subsequent rapid increase in humidity of the primary system resulted in damages of fuel elements in the core and the primary system was contaminated by fission products. In-reactor structures had been damaged, too. Activity had penetrated also into certain parts of the secondary system via leaking steam generators. Radiation situation in the course of both events on the plant site and around it had been below the level of limits specified. Based on a technical and economical justification of the demanding character of equipment repairs for the restoration of plant operation, and also due to a decision made not to continue with further construction of gas cooled reactors in Czechoslovakia, a decision was made in

  17. Bohunice - information within July 2004

    International Nuclear Information System (INIS)

    In this leaflet results of exploitation of four units of the Bohunice V-1 and V-2 NPPs are presented. The electricity and heat production in July 2004 are reviewed. Within a July 2004 the electricity was produced: 285 GWh (block 1), 292 GWh (block 2), 0 GWh (block 3), 20 GWh (block 4), totally 597 GWh, and 6352 GWh within a January - July 2004. The heat production in July 2004 was 9 417 GJ, and within a January - July 2004 it was produced 941 403 GJ of heat. After enlargement of European Union (EU) by ten new member states on May 1, 2004 the number of nuclear units has been risen by 19 units. 136 nuclear units were in operation in 'old' European Union. The most of nuclear units have been brought by Czech Republic and Slovak Republic (6 operational units, each state); Hungary has brought four units, Lithuania two and Slovenia one nuclear unit. Remaining five countries - Poland, Estonia, Cyprus, Latvia and Malta do not use nuclear energy for electricity production. Nuclear energetics is used in fourteen countries in enlarged European Union. France operates the largest number of nuclear units (59), which generated 77.67 per cent electricity of total French produced electricity in last year. However, France has lasted its dominant position in European Union since May, because two Lithuanian nuclear units generated 79.88 per cent of electricity in last year. In 2003 nuclear units reached 33.1 per cent of electricity generation within European Union. After enlargement of EU in 2004 this share should be raised to 34 per cent

  18. In-core-sipping in Jaslovske Bohunice

    International Nuclear Information System (INIS)

    The Siemens in-core sipping system has proved to work satisfactorily in the Jaslovske Bohunice Nuclear Power Station. In 1990, Siemens (KWU) installed a new version of the system advanced in the light of past operating experience, in which the rectangular eightfold bell had been replaced by rotationally symmetrical sevenfold bell. The number of failed fuel elements detected in the four generating units of the Jaslovske Bohunice Nuclear Power Station is relatively small, documenting reliable operation of the fuel elements in the WWER-440 reactor. (orig./HP)

  19. The common project for completion of Bubbler Condenser Qualification (Bohunice, Mochovce, Dukovany and Paks NPPs)

    International Nuclear Information System (INIS)

    Described is the common project for completion of bubbler condenser qualification for nuclear power plants in Bohunice, Mochovice, Dukovany and Paks. Functionality of the bubbler condenser was elaborated during the simulation of the main steam line brake, medium break and small break LOCA. On this basis the appropriate operation of bubbler condenser containment under accident conditions can be positively confirmed

  20. Bohunice NPPs - Part of the Slovak's economy (sustainable) development

    International Nuclear Information System (INIS)

    Of the total consumption of electricity in Slovakia, 42% was generated in nuclear power plant units in 1999. Slovakia operates 6 units with a WWER 440 nuclear reactors, 4 of them are at Bohunice site and 2 at Mochovce. The Nuclear Regulatory Authority of SR is not the only regulatory body controlling nuclear activity. Both - the system of nuclear activities regulation in Slovakia as well as the approach to Nuclear Safety enhancement of the operator were positively judged by IAEA and WENRA. In 1993 -Slovakia has accepted the commitments of the UN Convention on Climate Changes, including a reduction of greenhouse gases to 1990 levels by the year 2000. Moreover, as an internal target Slovakia has set the reaching of the ,'Toronto Objective', i.e. 20% reduction in COx emissions through the year 2005 as compared to 1988. Taking into account the actual situation as well as natural conditions for some renewable sources utilisation, the target won't be reached without nuclear energy. The nuclear energy is free of emissions, does not burn oxygen, and with the share of production in Slovakia will remain significant contributor. To the environment protection it contributes also by replacing fossil heat plants with heat delivery for the region. In case of radiological wastes the environment protection is ensured by very strict system of control, evidence, treatment and repository. To conclude, Bohunice NPPs were, are and will remain very important part of the Slovak's economy, creating conditions for its (sustainable) development

  1. Report of the ASSET (Assessment of Safety Significant Events Team) follow-up mission to the Bohunice (units 1-2) nuclear power plant in Slovakia 5-9 July 1993. Root cause analysis of operational events with a view to enhancing the prevention of accidents

    International Nuclear Information System (INIS)

    This Report of the IAEA Assessment of Safety Significant Events Team (ASSET) presents the results of the team's review of the status of implementation of the recommendations made by the 1988 ASSET mission to Bohunice nuclear power plant in Slovakia, and of progress made by plant management in prevention of incidents. The findings, conclusions and suggestions presented herein reflect the views of the ASSET experts. They are provided for consideration by the responsible Slovakian authorities. The ASSET team's views presented in this report are based on review of the documentation made available and on the discussions with plant staff. The report includes the official response of the operating and regulatory organizations of Slovakia to the ASSET findings and conclusions. Figs, tabs

  2. Programmes design for Bohunice NPP personnel other than control room operators

    International Nuclear Information System (INIS)

    This paper deals with project development of training programmes for non-licenced NPP personnel-masters, field operators, maintenance and technical supporting personnel. The programme development focuses on the part stage and on the job training at NPP. Bohunice NPP belongs to plants with higher specific number of personnel per installed power capacity. This factor also influenced the choice of programmes design. Undermentioned procedure is one of various approaches to SAT exploitation for training programmes design. (author)

  3. Chemistry monitoring and diagnostic system at NPP Jaslovske Bohunice

    International Nuclear Information System (INIS)

    This paper provides a description of water chemistry monitoring and diagnostic system installed at Slovak NPP Jaslovske Bohunice. System has complex architecture and covers laboratory data, chemistry and radiochemistry on-line monitoring data, process data acquisition and processing and diagnostics. Pre-filtered data from process computer and chemistry on-line monitors are recorded together with laboratory data in the ORACLE-based information system CHEMIS with many presentation and processing features. Brief information is given about the basic features of a newly developed diagnostic system for early detection and identification of anomalies incoming in the water chemistry regime of the primary and secondary circuit of VVER-440 type unit. This system, called SACHER (System of Analysis of Chemical Regime) has been installed within the major modernization project at the NPP Bohunice in the Slovak Republic. System SACHER has been developed fully in MATLAB environment. Diagnostic system works exclusively with available on-line data as an operation personnel support application allowing effective response to adverse chemistry events/trends. The availability of prompt information about the chemical conditions of the primary and secondary circuit is very important in order to prevent the undue corrosion and deposit build-up processes within the plant systems. The typical chemical information systems that exist and work at the NPPs give the user values of the measured quantities together with their time trends and other derived values. It is then the experienced user's role to recognize the situation the monitored process is in and make the subsequent decisions and take the measures. The SACHER system, based on the computational intelligence techniques, inserts the elements of intelligence into the overall chemical information system. It has the modular structure with the following most important modules: - normality module- its aim is to recognize that the process

  4. Analysis of Steam Generators Corrosion Products from Slovak NPP Bohunice

    Directory of Open Access Journals (Sweden)

    Jarmila Degmová

    2012-01-01

    Full Text Available One of the main goals of the nuclear industry is to increase the nuclear safety and reliability of nuclear power plants (NPPs. As the steam generator (SG is the most corrosion sensitive component of NPPs, it is important to analyze the corrosion process and optimize its construction materials to avoid damages like corrosion cracking. For this purpose two different kinds of SGs and its feed water distributing systems from the NPP Jaslovske Bohunice were studied by nondestructive Mössbauer spectroscopy. The samples were scraped from the surface and analyzed in transmission geometry. Magnetite and hematite were found to be the main components in the corrosion layers of both SGs. Dependant of the material the SG consisted of, and the location in the system where the samples were taken, the ratios between magnetite and hematite and the paramagnetic components were different. The obtained results can be used to improve corrosion safety of the VVER-440 secondary circuit as well as to optimize its water chemistry regime.

  5. Response of native flora to inducible genotoxic damage from increased radioactivity around NPP Jaslovske Bohunice, Slovakia

    International Nuclear Information System (INIS)

    It is not generally known that the first serious failure of nuclear power plant (NPP) technology with loss of human lives occurred in NPP Jaslovske Bohunice (Czechoslovakia) in January 1976. A year later the second accident finally broken reactor A1 with large radioactive contamination. This material was later (in 1980) washed into the nearby drainage by the heavy rain. In cleaning procedure, the contaminated soil particles contaminated the slopes of the drainage. These spots have the shape of 'blurs' about 15 cm wide with a scale of contamination from 0,067; 0,15; 2,38; 9,5; 45.5 up to 322 kBq/kg 137Cs. The research was done in cooperation with the Institute of Tumorbiology, University of Vienna, within the grant Action Austria - Slovak Republic. Details of radioactivity at the area were obtained thanks to the Research Institute of the Nuclear Energy in Trnava, Slovakia. In our ten years long-term study of contaminated soil around nuclear power plant (NPP) Jaslovske Bohunice 24 species of local flora were used to show impact of these accidents. The 19 km long banks of the Jaslovske Bohunice NPP waste water recipient has been identified as contaminated by 137Cs. In total, more than 67,000 m2 of river banks have been found as being contaminated at levels exceeding 1 Bq 137Cs/g of soil. Used phytotoxic and cytogenetic -in situ' tests were extended by analyses of pollen grains. Although the dose of some samples of radioactive soil was relatively high (322 kBq kg-1) no any significant impact on the biological level of tested wild plant species was observed. Possible explanation (such as adaptation and resistance) is discussed. (author)

  6. Retrospective study of 14C concentration in the vicinity of NPP Jaslovské Bohunice using tree rings and the AMS technique

    Science.gov (United States)

    Ješkovský, Miroslav; Povinec, Pavel P.; Steier, Peter; Šivo, Alexander; Richtáriková, Marta; Golser, Robin

    2015-10-01

    Atmospheric radiocarbon has been monitored around the Nuclear Power Plant (NPP) Jaslovské Bohunice (Slovakia) using CO2 absorption in NaOH solution since 1969. In 2012, tree ring samples were collected from Tilia cordata using an increment borer at Žlkovce monitoring station situated close to the Bohunice NPP. Each tree ring was identified and graphite targets were produced for 14C analysis by accelerator mass spectrometry. The 14C concentrations obtained from the tree-ring samples have been in a reasonable agreement with the averaged annual 14C concentrations in atmospheric CO2.

  7. Risk-informed decision making during Bohunice NPP safety upgrading

    International Nuclear Information System (INIS)

    The paper summarizes some facts of risk-informed regulation developments within UJD regulatory environment. Based on national as well as international operating experience and indications resulted from PSA, Nuclear Regulatory Authority of the Slovak Republic (UJD) since its constituting in 1993 has devoted an effort to use PSA technology to support the regulatory policy in Slovakia. The PSA is considered a complement, not a substitute, to the deterministic approach. Suchlike integrated approach is used in decision making processes and the final decision on scope and priorities is based on it. The paper outlines risk insights used in the decision making process concerning Bohunice NPP safety upgrading and focuses on the role of PSA results in Gradual Reconstruction of Bohunice VI NPP. Besides, two other examples of the PSA results application to the decision making process are provided: the assessment of proposal of modifications to the main power supply diagram (incorporation of generator switches) and the assessment of licensee request for motor generator AOT (Allowable Outage Time) extension. As an example of improving support of Bohunice V-2 risk-informed operations, concept of AOT calculations and Bohunice V-2 Risk Monitor Project are briefly described. (author)

  8. Seismic and geological conditions at the Bohunice NPP site

    International Nuclear Information System (INIS)

    The paper brings basic information on geological and seismic characteristics of the site of NPP Jaslovske Bohunice, Slovakia. Western Carpathians and Trnava, bay geological properties are briefly introduced. The most important macroseismic data and data obtained from field measurements are analysed. Main features of the expected strong seismic motion are discussed. The attention is devoted to local soil characteristics just under the site of NPP. (author)

  9. Safety improvement programme of WWER 440/230 units in Jaslovske Bohunice

    International Nuclear Information System (INIS)

    A brief overview is given of the power sources in Slovakia which include 6 operational reactor units (4 at Jaslovske Bohunice and 2 at Mochovce) and 2 units under construction (at Mochovce). The efforts undertaken in the past 10 years and aimed at upgrading the nuclear safety of the two older (V-230 Soviet type) units at Bohunice are highlighted. The relevant regulatory decisions are dealt with and the measures already carried out are listed. Also characterized are several IAEA international safety assessment missions and safety-aimed meetings which took place in 1998 and 1999 and are of concern to the older Bohunice units. (A.K.)

  10. Safety analysis report, deterministic and probabilistic evaluation after Bohunice V1 NPP gradual upgrading

    International Nuclear Information System (INIS)

    This presentation describes approach used for nuclear safety assessment at the V -1 Bohunice after the Gradual Upgrading. The deterministic and probabilistic results are presented in detail form. (author)

  11. REKO - Bohunice V-1. Experience with instrumentation and control system

    International Nuclear Information System (INIS)

    In this paper and in presentation some results of upgrading of the NPP Bohunice V-1 are presented. For the first time, extensive upgrades are performed in all safety-related areas of both units with VVER 440/230 reactors. These upgrades focused on: - Expansion and upgrading of the process safety systems; - Replacement of the safety I and C system with a TELEPERM XS-based system; - Spatial separation of safety equipment; - Modernisation of the electrical auxiliary power systems; - Seismic upgrading and fire protection; - Improvement of the man-machine interface. This upgrade is considered exemplary around the world. The most extensive stage of gradual reconstruction of Unit 2 was completed according to the schedule in January 1999. For the first time, a reactor which incorporates state-of-the-art digital I and C in its reactor protection system is on-line. (author)

  12. MELCOR Comparative Analyses of Severe Accident of Medium LOCA for the NPP V2 Bohunice

    International Nuclear Information System (INIS)

    This paper presents the results of safety analysis of a medium LOCA (break size 100 mm in cold leg) for the V2 Bohunice nuclear power plant (VVER-440/V-213), and compares the results calculated by various computer codes (MELCOR, MAAP, RELAP/SCADAP). The analysis is performed within the SWISSLOVAK project by the safety analysis group at the Nuclear Regulatory Authority of the Slovak Republic. The medium LOCA accident is combined with station blackout scenario which leads to the core uncovery and meltdown of the reactor core. The core meltdown is followed by the core relocation to the lower plenum, heat up of the reactor pressure vessel lower head, failure of the lower head, and debris ejection into the reactor cavity. The time of key events calculated by various computer codes is similar. The start of core melt is predicted within 0.8 to 1.08 hours and the reactor pressure vessel lower head failure is predicted within 4.1 to 6.3 hours since the initiation of the accident. A substantial release of noble gases to the environment through the permanent containment leakage is calculated. The compartmentalization of the containment and the presence of the bubble condenser affect the release of the fission products. (author)

  13. Seismic re-evaluation and upgrading of Bohunice V1 NPP

    International Nuclear Information System (INIS)

    Bohunice V1 in Slovakia is a two unit WWER 440/230 whose units went into commercial operation in 1979 and 1981 respectively. The plant was not initially designed for seismic loading. Later geotechnical studies concluded that the site seismic hazard should be defined as an earthquake of MSK 8 intensity. This relates to approximately 0.25 g peak ground acceleration in the free field at the site. Some early reconstruction to strengthen the plant against earthquakes was done in the early 1990s but did not include all safety significant structures and equipment. In 1996, EBO, the plant operator, entered into a contract with consortium REKON, a Siemens and VUJE joint venture, for a major reconstruction program to update all safety systems required for a safe shutdown, to improve integrity of confinement and assure spent fuel cooling. This reconstruction project includes verification of seismic adequacy of all safety related structures and equipment in the REKON scope which is not being replaced by new construction. Siemens and EQE International are jointly conducting the seismic verification and required upgrading for the existing structures and equipment. Criteria for the verification and upgrading were developed for the project utilizing Technical Guidelines provided by IAEA, Reference 1, and linking them with international and local codes and standards and specific methodologies developed for similar projects in the US and Western Europe. The criteria are briefly discussed herein and are summarized in a companion paper, Reference 4. Because of the major improvements being implemented in safety systems, much of the essential safety related equipment is being directly replaced or completely new systems are being constructed that supersede existing ones. Consequently, a significant amount of the equipment that would normally require seismic adequacy verification is deleted from the verification scope (see Table 4). The reconstruction project will continue through 1999

  14. Project Management Unit for decommissioning of NPP Bohunice VI (2003-2014); Project Management Unit para el desmantelamiento de CN Bohunice V1 (2003-2014)

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez Fernandez-conde, A.; Brochet, I.; Ferreira, A.

    2015-07-01

    From October 2003 until december 2014 the Consortium consisting of Iberdrola Engineering and Construction (leader). Empresarios Agrupados Internacional, and Indra Sistemas has carried out the project Project Management Unit ((PMU) for the decommissioning of Bohunice V1 NPP (units 1 and 2), type VVER-440/V-230 in Slovakia. during the first phase (2003-2007) EdF was also part of the Consortium. The project is funded by the Bohunice International Decommissioning Support Fund (BIDSF) administered by the RBRD. The main objective of the project is to provide the necessary engineering and resources of project management for planning, execution, management, coordination and monitoring of all tasks in support of the decommissioning. (Author)

  15. Experience from operation of WWER-440 model 213 nuclear power plants. Reference plant: Bohunice V2 (Slovakia). Report of the IAEA technical co-operation project RER/9/004 on evaluation of safety aspects of WWER-440 model 213 nuclear power plants

    International Nuclear Information System (INIS)

    This TECDOC provides a comprehensive review of the operational experience with WWER-440/213 plants. It is hoped that it will be useful to anyone working in the field of WWER safety, and in particular to experts planning, executing or reviewing studies related to the subject. Refs, figs and tabs

  16. Experimental design verification of WWER-440 model 213 nuclear power plants. Reference plant: Bohunice V2 (Slovakia). Report of the IAEA technical co-operation project RER/9/004 on evaluation of safety aspects of WWER-440 model 213 nuclear power plants

    International Nuclear Information System (INIS)

    This publication addresses the experimental research supporting the design of WWER-440 model 213 plants. it is hoped that the material presented will be useful for experts working in the field of WWER safety, and in particular to those planning, executing or reviewing studies related to the subject. Refs, figs and tabs

  17. Strength analyses of the bubbler condenser structure of WWER-440 model 213 nuclear power plants. Reference plant: Bohunice V2 (Slovakia). Report of the IAEA Technical Co-operation Project RER/9/004 on evaluation of safety aspects of WWER-440 model 213 nuclear power plants

    International Nuclear Information System (INIS)

    This publication addresses the topic of mechanical strength of the bubbler condenser applied in the WWER-440 model 213 plants and is intended to assist WWER-440/213 operators in the re-assessment of the bubbler condenser performance. It is hoped that it will also be useful to anyone working in the field of WWER safety, and in particular to experts planning, executing or reviewing studies related to the subject. Refs, figs and tabs

  18. Operating results of nuclear power plants SE, 2005

    International Nuclear Information System (INIS)

    In this presentation author deals with operating results of Bohunice nuclear power plants and Mochovce NPP. These operating results are compared with results obtained on other NPPs with WWER reactors.

  19. Resin intrusion into the primary circuit of NPP Jaslovske Bohunice V-1

    International Nuclear Information System (INIS)

    During the refueling at the first unit of Bohunice NPP in 2005 a lot of sediment was found on the upper storage rack. This sediment was identification as a filter resin. Resin was found in most of the fuel assemblies, pipes and tanks of the primary circuit and his auxiliary systems. Resin producer and WANO network was contacted in order to get information about similar events. Management of Bohunice NPP made a decision that primary circuit, fuel assemblies and auxiliary systems have to be cleaned. Subsequent cleaning extended outage by 31 days. This paper summarizes causes, existing consequences and corrective actions. Accent was put on the hydraulic characteristics of the primary circuit measurement, power distribution core monitoring and the primary circuit water quality verification (Authors)

  20. ESTE EMO and ESTE EBO - emergency response system for NPP Mochovce and NPP Bohunice V-2

    International Nuclear Information System (INIS)

    Programs ESTE EMO and ESTE EBO are emergency response systems that help the crisis staff of the NPP in assessing the source term (predicted possible release of radionuclides to the atmosphere ), in assessing the urgent protective measures and sectors under threat, in assessing real release (symptoms of release really detected and observed), in calculating radiological impacts of real release, averted or avertable doses, potential doses and doses during transport or evacuation on specified routes. Both systems serve as instruments in case of severe accident (DBA or BDBA) at NPP Mochovce or NPP Bohunice, accidents with threat of release of radioactivity to the atmosphere. Systems are implemented at emergency centre of Mochovce NPP and Bohunice NPP and connected online to the sources of technological and radiological data from the reactor, primary circuit, confinement, secondary circuit, ventilation stack, from the area of NPP (TDS 1) and from the emergency planning zone (TDS 11). Systems are connected online to the sources of meteorological data, too. (authors)

  1. Project Management Unit for decommissioning of NPP Bohunice VI (2003-2014)

    International Nuclear Information System (INIS)

    From October 2003 until december 2014 the Consortium consisting of Iberdrola Engineering and Construction (leader). Empresarios Agrupados Internacional, and Indra Sistemas has carried out the project Project Management Unit ((PMU) for the decommissioning of Bohunice V1 NPP (units 1 and 2), type VVER-440/V-230 in Slovakia. during the first phase (2003-2007) EdF was also part of the Consortium. The project is funded by the Bohunice International Decommissioning Support Fund (BIDSF) administered by the RBRD. The main objective of the project is to provide the necessary engineering and resources of project management for planning, execution, management, coordination and monitoring of all tasks in support of the decommissioning. (Author)

  2. Diagnostics of components of primary and secondary circuits of WWER-440 nuclear power plants

    International Nuclear Information System (INIS)

    A brief description is presented of the monitoring diagnostic system installed in both units of the V-1 nuclear power plant in Jaslovske Bohunice. The system manufactured by Brueel and Kjaer, Denmark, operates on the principle of evaluating vibroacoustic signals from selected components of the primary and secondary circuits. Both reactors of the V-2 nuclear power plant in Jaslovske Bohunice are equipped with similar systems manufactured by West German company KWU and home manufacturers. (Z.M.)

  3. Mineralogical determination, distribution ration, speciation and radionuclides mobility in soil samples from objects 41 and 44/10 NPP Jaslovske Bohunice

    International Nuclear Information System (INIS)

    Mineralogical characterization of a soil from the Nuclear Power Plant Jaslovske Bohunice object 41 and 44/10 was performed by x-ray diffraction method and surface measuring. It was find that the main component was smectite but other minerals like quartz, illite, chlorite and K-feldspar, were observed. Sorption and speciation of 137Cs, 85Sr, 241Am and 60Co in the mix soil was done with continuous leaching and Tessier scheme. It was found that distribution ration for Co and Cs is the highest. Strontium was in ionic form, Cs was leached with nitric acid, americium was fixed on carbonate fraction and cobalt was predominantly leached with reduction solutions as can be observed from the Tessier sequence method. Sorption of iodine on the soil used in the experiment was negligible (authors)

  4. Post-reconstruction full power and shut down level 2 PSA study for Unit 1 of Bohunice V1 NPP

    International Nuclear Information System (INIS)

    The level 2 PSA model of the J. Bohunice V1 NPP was developed in the RISK SPECTRUM Professional code with the following objectives: to identify the ways in which radioactive releases from the plant can occur following the core damage; to calculate the magnitudes and frequency of the release; to provide insights into the plant behaviour during a severe accident; to provide a framework for understanding containment failure modes; the impact of the phenomena that could occur during and following core damage and have the potential to challenge the integrity of the confinement; to support the severe accident management and development of SAMGs. The magnitudes of release categories are calculated using: the MAAP4/VVER for reactor operation and shutdown mode with closed reactor vessel and the MELCOR code for shutdown mode with open reactor vessel. In this paper an overview of the Level 2 PSA methodology; description of the confinement; the interface between the level 1 and 2 PSA and accident progression analyses are presented. An evaluation of the confinement failure modes and construction of the confinement event trees as well as definition of release categories, source term analysis and sensitivity analyses are also discussed. The presented results indicate that: 1)for the full power operation - there is an 25% probability that the confinement will successfully maintain its integrity and prevent an uncontrolled fission product release; the most likely mode of release from the confinement is a confinement bypass after SGTM with conditional probability of 30%; the conditional probability for the confinement isolation failure probability without spray is 5%, for early confinement failure at the vessel failure is 4%, for other categories 1% or less; 2) for the shutdown operating modes - the shutdown risk is high for the open reactor vessel and open confinement; important severe accident sequences exists for release categories: RC5.1, RC5.2 and RC6.2

  5. Status of steam generator tubing integrity at Jaslovske Bohunice NPP

    Energy Technology Data Exchange (ETDEWEB)

    Cepcek, S. [Nuclear Regulatory Authority of the Slovak Republic, Trnava (Slovakia)

    1997-02-01

    Steam generator represents one of the most important component of nuclear power plants. Especially, loss of tubing integrity of steam generators can lead to the primary coolant leak to secondary circuit and in worse cases to the unit shut down or to the PTS events occurrence. Therefore, to ensure the steam generator tubing integrity and the current knowledge about tube degradation propagation and development is of the highest importance. In this paper the present status of steam generator tubing integrity in operated NPP in Slovak Republic is presented.

  6. Information about influence of the Bohunice V-2 NPP on the environment, August 2008

    International Nuclear Information System (INIS)

    In this paper results of monitoring of chemical gaseous and liquid effluents into the rivers Vah River as well as of radiation monitoring of Bohunice V-2 NPP are presented. The radioactive effluents into atmosphere within August 2008 were: 2.72 MBq of aerosols, 0.052 MBq of of iodine-131, and 537 GBq of rare gases. For the period January - August 2008 these radioactive effluents into recipient of Vah River represented 6.66 MBq (0.318% of annually limit (AL)) of aero-soles; 0.318 MBq (0.00049% of AL) of iodine-131 and 3341 GBq (0.172% of AL) of rare gases. The radioactive effluents into Vah River recipient within August 2008 were: 968.78 GBq of tritium and 1.35 MBq of corrosive and fission products. For the period January - August 2008 these radioactive effluents into Vah River recipient represented 3,233.51 GBq (16.1675% of AL) of tritium, and 13.50 MBq (0.104% of AL) of corrosive and fission products. Average dose equivalents rate for the villages in surroundings of the Bohunice V-2 NPP for the period from July 31 to September, 2008 are published. Chemical effluents are also reported

  7. Advanced CA technologies and remotely controlled manipulators used for the decontamination of the A-1 NPP Jaslovske Bohunice, Slovak Republic

    International Nuclear Information System (INIS)

    This paper deals with the main activities and results of the Nuclear Power Plants Research Institute (VUJE) Trnava in the fields of development of remotely operated manipulators and robots for decontamination and dismantling. D and D of the Active Water Purifying Station (AWPS) of A-1 NPP Jaslovske Bohunice was chosen as a pilot project for the application of advanced CA technologies and manipulators for D and D tasks. The presence of radioactive, toxic or hazardous materials limits personnel access to facilities. Very often there are not enough up-to-date drawings of the installed technology. Therefore, in preparation phase of decontamination, a 3D Laser scanner and software 3Dipsos were involved as modelling technology and civil construction of the facility. Examples of acquired data and created 3D models are presented. Many D and D tasks have to be performed remotely. This paper describes the main features of developed remotely controlled manipulators. A movable manipulator MT-15 is dedicated for recognition and analysing tasks in hostile environment. A general purpose manipulator MT-80 is used for heavy duties in D and D. A long reach manipulator DENAR-41 was developed for the decontamination of underground waste storage tanks. Mock up tests of the afore-mentioned manipulators were performed before they were used in D and D tasks. Moreover the software EUCLID and IGRIP are used for simulation, analysing and optimisation of decontamination or dismantling tasks. This procedure leads to safe and more effective realisation of decontamination and dismantling tasks. The obtained results are also used for future development of suitable manipulators. The description of the initial and present state of contamination and radiation level in AWPS is presented in this paper. Experience with utilisation of advanced CA technology for acquiring as built models, development of manipulators and simulation of D and D tasks are described. (author)

  8. 2007 year - annual impacts of effluents in routine releases to the atmosphere and to the hydrosphere from NPP Bohunice V-2 evaluated by the code ESTE AI

    International Nuclear Information System (INIS)

    Annual impacts of Bohunice V -2 operation caused by effluents in routine releases during the year 2007 were calculated and evaluated first time with the help of completely new program - ESTE AI. Program is approved by the 'Public Health Authority of the Slovak Republic' and since January 2008 is used as legal instrument by Slovenske elektrarne a.s., NPP Bohunice. In this poster presented are annual effluents to the atmosphere and to the hydrosphere from Bohunice V-2 NPP. Presented, analyzed and discussed are main results of 2007 impacts evaluation. (authors)

  9. Slovak Electric, plc, Mochovce Nuclear Power Plant

    International Nuclear Information System (INIS)

    In this popular scientific brochure a brief description of construction scheme of Bohunice Nuclear Power Plant is presented. Electricity generation in a nuclear power plant is described. Instrumentation and control system as well as nuclear safety principles applied on the NPP are presented

  10. Planning for environmental restoration of the contaminated banks near NPP Bohunice

    International Nuclear Information System (INIS)

    The 18 km long banks of the Bohunice NPP waste water recipient are contaminated by cesium-137 as a result of two accidents on the CO2 cooled NPP A1 unit in 1976 and 1977. Since 1992, all he contaminated waste waters dumping from NPP Bohunice has been carried out directly to the Vah River through a specially constructed 15 km long pipeline. The final extent of contamination in the Bohunice site is represented. The overall contaminated area in this site with cesium-137 activity above 1 Bq/g of soil is about 67000 m2 and thus, the corresponding volume of top 20 cm thick soil layer is about 13000 m3. For optimizing less costly remedial measures (warning signs...) an agreed scenario with a pre-estimated factor factor collective dose 2.10-7 man.Sv.y-1/(m2.Bq137Cs.g-1) was applied. Limitation of individual effective doses according to a site specific stay scenario was also considered for this purposes with a limiting value of 0.25 mSv/y. Cost analysis of available remedial techniques were carried out, too. Two techniques have been selected for the contaminated banks restoration project: 1) removing/disposal of 20 cm soil top layer from steep and unengineered banks, and 2) mechanical dilution/fixation of contamination by clean 15 cm soil cover for the contaminated flat areas. Two-fold reduction of anticipated potential radiation risk were accepted, maximally, for the lastly mentioned technique, however cost saving is considerable (about 10-time lower the cost comparing to removing/disposal technique one). The basic acceptance limits AL for 137Cs in soil and criteria size of continuously contaminated bank areas were derived as: AL200 = 6.0 Bq/g and 800 m2 (300 m) or AL50 8.0 Bq/g and 200 m2 (80 m) for removing/disposal of the soil on steep unengineered banks. For clean soil covering technique the resulting limits are in an interval AL50C = 8 up to 16 Bq/g. According to the criteria developed, it is necessary to subject to restoration about 11000 m2 of contaminated area on

  11. Principles and criteria for environmental restoration of the contaminated banks near NPP Bohunice

    International Nuclear Information System (INIS)

    The 18 km long banks of the Bohunice NPP waste water recipient are contaminated by 137Cs as a result of two accidents on the CO2 cooled NPP-A1 unit in 1976 and 1977. Contamination acceptance limits 6 or 8 Bq 137Cslg of soil, depending on contaminated area size, were derived on the basis of developed principles, and approved by the authorities. Removing and safe burial of 1,100 m3 of contaminated soil from steep area and 15 cm thick clean soil covering on about 1ha of flat area of the contaminated banks is planned in frame of the re-considered restoration project implementation in 1995/96. (author)

  12. WWER–440 Spent Fuel and Structural Materials Performance in Jaslovke Bohunice Wet Storage Facility

    International Nuclear Information System (INIS)

    The main goals of actual stage of this long-term project are: • Analyses of the seventh set of specimens No.116/2 from ATABOR steel after 7, 5 eventually 4 years of exposition in the Bohunice spent fuel interim wet storage environment using the following methods: o Documentation of sample surfaces after removal from storage pool; - Microstructure evaluation for the base and weld metal; - Analysis of corrosion media influence to the structure of ATABOR steel using the light microscopy; o Scanning electron microscopy and microanalysis of exposed samples; • The optimization of database structure on the base of experience from the second stage of SPAR-III contract; • On the basis of the analysis results to prepare the new optimized set of specimens prepared from the specific heat of ATABOR steel

  13. LBB technology application to the primary piping system of the NPP V1 Jaslovske Bohunice

    International Nuclear Information System (INIS)

    Due to several deficiences of the WER Model 230 type reactor a leak before break demonstration of this reactor is of primary importance. The complex project for NPP V1 Jaslovske Bohunice includes a static and dynamic stress analysis of the primary piping, a fatique damage analysis, leak rate assessments and an analysis of the stability of the heavy components supports. The material database includes data on fracture mechanics, on assessment of corrosion properties, and on the influence of 100 000 hr service exposure on base metal and welds including disimilar welds. The program was supported by large scale experiments on RPV safe-end, pressurizer safe-end, elbow welds with through-wall cracks and leak rate measurements. The results and applications are discussed. (orig.)

  14. Bohunice NPP experience with SARs and Safety Analyses. TM on Comparative Analysis of Assumptions, Models and Results of AA included in SAR. IAEA RER/9/070

    International Nuclear Information System (INIS)

    Regulatory authority decided in 1993 that will use REG 1.70 format for FSARs of Bohunice NPP. The new format first is used for V-2 FSAR in 1995 (upgrading after 10 years of commercial operation). After issuing of V-2 FSAR, it passed several internal review and IAEA mission. During the process of estimation of FSAR many shortcomings and problems is discovered. The main discovered general problems concerns sharing of architect-engineer role between domestic and foreign organisation, absence or unavailability of a part of the design basis information and missing of national guidelines and need to adopt international (IAEA) or foreign ones (US, German, French) guidelines for specific types of analyses). Difficulties of FSAR development are generated by application of different approaches to the design, construction (original design standards - OPB) and to the assessment of the safety of the NPP (western, IAEA), as well as a lack of communication between the NPPs / national engineering organizations and the General designer. The shortcomings of Chapter 15 is expressed in justification of the computational variants, consistency (data, modeling approach, assumptions), different approach to conservatism in individual subchapters (application of SFC, boundary conditions, initial conditions), acceptance criteria not always properly evaluated and 'author / user effect'. The conclusion of estimation of present situation is based on the implications and shows necessity for overall correction and extension of the FSAR (requirements surpassing REG 1.70). About Chapter 15 is achieved unification of the approach in different areas of AA (consistency) and elimination of inconsistencies, including of bounding scenarios into all subchapters and general format related improvements (legibility, quality of graphics etc.) Development of plant specific accident analysis methodologies are started in 1995 in collaboration with VUJE Trnava and main basis are the drafts of IAEA-WWER-EBP-01

  15. Bohunician technology and thermoluminescence dating of the type locality of Brno-Bohunice (Czech Republic).

    Science.gov (United States)

    Richter, D; Tostevin, G; Skrdla, P

    2008-11-01

    Results of thermoluminescence (TL) dating of 11 heated flint artifacts from the 2002 excavation at Brno-Bohunice, Czech Republic, are presented. The samples are from the eponym locality for the Bohunician, an industrial type considered technologically transitional between Middle and Upper Paleolithic core reduction strategies. The Bohunician is the first early Upper Paleolithic technocomplex in the Middle Danube of Central Europe and, therefore, is implicated in several issues related to the origins of modern humans in Europe. The Bohunician provides an example of how one technological strategy combines crested blade initiation of a core with the surficial (almost Levalloisian) reduction of blanks as blades and points. As the Middle Danube lacks antecedents of the behavioral steps within this technology, several hypotheses of inter-regional cultural transmission, with and without hominin gene flow, could explain the appearance of the Bohunician. The elucidation of the temporal context of Bohunician assemblages is, therefore, a critical step in understanding the behavioral, and potentially biological, succession in this region. Radiocarbon age estimates from charcoal associated with Bohunician sites suggest a wide age range between 33 and 41 ka 14C BP, which is also observed for individual sites. TL dating of heated flint artifacts provides ages on the calendric time scale of an archeological event, the firing. The weighted mean of 48.2+/-1.9 ka BPTL for 11 heated flint samples from Brno-Bohunice provides the first non-radiocarbon data on archeological material from the Bohunician. The TL dating, in conjunction with the archeological and sedimentological analysis, allows the evaluation of the integrity of this new type-collection. The hypothetical possibility of the incorporation of Szeletian artifacts (i.e., leaf points) into the site formation processes can therefore be refuted. PMID:18951613

  16. Analysis of the mortality development of the population in the surroundings of Bohunice NPP using Fuzzy logic methods

    International Nuclear Information System (INIS)

    We pursue the vicinity of Bohunice NPP. The vicinity has cyclic form with radius of 30 km, what represents an area approximately 2 800 km2. This area of pursued vicinity is requisite by the security report of Bohunice NPP. To the presumptive calculations we used the complete databases of Register of death, Register of municipalities and of Register of age structure of the inhabitants of the Slovak republic from 1993 to 1999, fully-fashioned in Statistical authority of the Slovak republic. We work with databases, which don't contain personal identifications. We pursue the evolution of the mortality by the indicators of the mortality, calculated by the WHO. By the literary sources and by our experience is necessary the sum at least of three years to calculation of stable demographic and epidemiological parameters. Therefore we work with the method of short time series. The basic observed unit, which is represented by one value of the indicator, is one municipality. All our assessing analyses are calculated from triennial sums of all indicators, so we work with man-years. Advanced report is the adjusted extract from Complex report on situation of environment and health of the inhabitants in vicinity of Bohunice NPP in 1999, which was advanced by our society in March 2001. (authors)

  17. Information about influence of the Bohunice V2 NPP on the environment, January 2008

    International Nuclear Information System (INIS)

    In this paper results of monitoring of chemical gaseous and liquid effluents into the Vah River as well as of radiation monitoring of Bohunice V2 NPP are presented. The radioactive effluents into atmosphere within January 2008 were: 0.19 MBq of aerosoles, 0.025 MBq of iodine-131, and 382 GBq of rare gases. For the period January 2008 these radioactive effluents into atmosphere represented 0.190 MBq (0.0002% of annually limit (AL)) of aerosoles, 0.025 MBq (0.00004 MBq of AL) of iodine-131, and 382 GBq (0.519% of AL) of rare gases. The radioactive effluents into recipient of Vah River within January 2008 were: 0.06 GBq of tritium, and 0.63 MBq of corrosive and fission products. For the period January 2008 these radioactive effluents into recipient of Vah River represented 0.06 GBq (0.0003% of AL) of tritium; 0.63 MBq (0.005% of AL) of corrosive and fission products. Dose equivalents rate for the villages in surroundings of the Mochovce NPP in January 2008 are published. Chemical effluents are also reported.

  18. Information about influence of the Bohunice V2 NPP on the environment, May 2008

    International Nuclear Information System (INIS)

    In this paper results of monitoring of chemical gaseous and liquid effluents into the Vah River as well as of radiation monitoring of Bohunice V2 NPP are presented. The radioactive effluents into atmosphere within May 2008 were: 0.29 MBq of aerosoles, 0.042 MBq of iodine-131, and 367 GBq of rare gases. For the period January - May 2008 these radioactive effluents into atmosphere represented 1.10 MBq (0.0014% of annually limit (AL)) of aerosoles, 0.159 MBq (0.00024% MBq of AL) of iodine-131, and 1.930 TBq (0.519% of AL) of rare gases. The radioactive effluents into recipient of Vah River within May 2008 were: 150.68 GBq of tritium, and 0.38 MBq of corrosive and fission products. For the period January - May 2008 these radioactive effluents into recipient of Vah River represented 855.43 GBq (4.2772% of AL) of tritium; 2.92 MBq (0.0226% of AL) of corrosive and fission products. Dose equivalents rate for the villages in surroundings of the Mochovce NPP in May 2008 are published. Chemical effluents are also reported.

  19. Information about influence of the Bohunice V2 NPP on the environment, February 2008

    International Nuclear Information System (INIS)

    In this paper results of monitoring of chemical gaseous and liquid effluents into the Vah River as well as of radiation monitoring of Bohunice V2 NPP are presented. The radioactive effluents into atmosphere within February 2008 were: 0.19 MBq of aerosoles, 0.025 MBq of iodine-131, and 344 GBq of rare gases. For the period January - February 2008 these radioactive effluents into atmosphere represented 0.37 MBq (0.0005% of annually limit (AL)) of aerosoles, 0.050 MBq (0.00008% MBq of AL) of iodine-131, and 725 GBq (0.036% of AL) of rare gases. The radioactive effluents into recipient of Vah River within February 2008 were: 100.01 GBq of tritium, and 0.61 MBq of corrosive and fission products. For the period January - February 2008 these radioactive effluents into recipient of Vah River represented 110.07 GBq (0.5504% of AL) of tritium; 1.24 MBq (0.010% of AL) of corrosive and fission products. Dose equivalents rate for the villages in surroundings of the Mochovce NPP in February 2008 are published. Chemical effluents are also reported.

  20. Testing of measuring systems TELEPERM-XS and SUGAN at Bohunice NPP during physical start-up tests commissioning in year 2000

    International Nuclear Information System (INIS)

    The paper presents testing methodology of neutron flux measurements systems used standard chains incorporated to the reactor control system and non-standard measuring system, used during start-up tests after refuelling of the reactors. Comparison of both measuring systems is given. Methodology is illustrated on results of measurements performed at Bohunice NPP during reactor start-up tests.(author)

  1. Software of diagnostic systems for nuclear power plants

    International Nuclear Information System (INIS)

    23 papers deal with the assessment of the standard of software in in-service diagnostics systems in the Dukovany and the Bohunice nuclear power plants. Research projects, intentions and the scope of research are outlined for the diagnostic systems of the Mochovce and the Temelin nuclear power plants. It is shown that the use is ever more growing of personal computers in this sphere. (J.B.)

  2. Selective Leaching of aerosol particles collected by cascade impactor in the ventilation stack of NPP V1 in Jaslovske Bohunice

    International Nuclear Information System (INIS)

    The study was apart of investigation of the size distribution of aerosol in air effluents from NPP V1 Jaslovske Bohunice. The evaluation the possible relationship between aerodynamic diameter of aerosol particles and chemical forms of radionuclides attached to the discharged aerosol was tried. Selective leaching was used for speciation of radionuclides present in the aerosol particles and for the estimation of their behaviour in the environment and absorption in gastro-intestinal tract. Activity concentrations of the radionuclides in the air, collected on collection substrates taken from individual impact stages and on back-up filter, were determined by sensitive gamma-spectrometric analysis using high purity Ge detectors. For the individual groups seven leaching steps were used. Following 12 radionuclides: silver-110m, cobalt-58, cobalt-60, cesium-134, cesium-137, manganese-54, ruthenium-103, antimony-124, antimony-125, tin-113, zinc-65, zirconium-95. Result shows that the leached fraction of the of the activity concentration does not depend on the size of the aerosol particles. (J.K.) 3 tabs., 3 figs

  3. Experience from replacement and check of thermocouples during reconstruction of in-reactor temperature measurements at Bohunice V-1 units 1 and 2

    International Nuclear Information System (INIS)

    Replacement of thermocouples in the protection tube blocks was a key phase of the reconstruction of in-reactor temperature measurements at Bohunice V-1 with regard to the success, reliability and impact on safety of unit operation. The replacement consisted of reliable and safe withdrawal of 216 old thermocouples, their disposal and installation of new thermocouples into dry channels. In the material presented, this phase of reconstruction is described in details, with focus on the evaluation of replacement quality and check activities carried out at the new installed thermocouples. (Authors)

  4. Results of reconstruction of in-core outlet coolant temperature measurements at V-230 reactors, Unit 1 and 2 NPP Bohunice

    International Nuclear Information System (INIS)

    During the reconstruction of NPP V 1 Bohunice units with V-230 reactors, all in-core temperature measuring systems were upgraded. All measuring channels including thermocouples up to data acquisition system were replaced. The report provides the objectives, process and results of the reconstruction. Accuracy and reliability of the in-core measurements were enhanced, and their resistance to accident environment was achieved. Moreover metrological assurance and automatic self-check of accuracy with the temperature etalon of reactor measurements were achieved. The obtained quality of the in-core temperature measurements exceeds that of similar systems in V-213 reactors. (Authors)

  5. Ageing management in the Slovak Republic NPPs. Experience in NPP Bohunice

    International Nuclear Information System (INIS)

    An aging management program begun to be systematically implemented under provisions of the Slovak Electricity Company environment since 1996, when the Safety Analysis Report after 10 years of Unit 3 and 4 operation had been submitted to the Slovak National Regulatory Authority. By then, the effects of known degradation mechanisms, of which various equipment and components are prone to, were assessed through the use of existing particular programs; e.g. RPV's irradiation embrittlement by a standard design-built surveillance specimen program and neutron dosimetry calculations, then the low-cycle fatigue of the main primary components/pipelines hot spots applying computational analyses as well as the evaluation of an erosion-corrosion effect on wall thinning of critical secondary piping components. As the world's trends and progress still have continued further towards the use of more sophisticated software, hardware, diagnostics, analyses, procedures and computing, given methodologies have been modernized and the idea of operational loads on evaluated systems, structures and components - particularly their critical hot spots - has been several times revised. After issuing of country's nuclear authority safety guide No.II.5.X/2001 'Aging management of nuclear power plants. Requirements.' in 2001, a project called 'Aging management and lifetime optimization of nuclear power plants with WWER 440 units' had been introduced, in collaboration with the nuclear power plants research institute (VUJE) it has been developed within the period of 2002-2005. (author)

  6. Applications of power from Temelin nuclear power plant

    International Nuclear Information System (INIS)

    The proceedings contain 10 papers of which 9 fall under the INIS scope. They all concern the intentions and possibilities of using heat from nuclear power plants, especially from the Temelin power plant. Waste heat will be used for district heating of adjacent conurbations and for agricultural purposes. Various projects are presented using heat from nuclear power plants, such as greenhouse heating, soil heating, cultivation of algae and fish in warmed-up water. The existing experience is described with the use of heat from the Bohunice nuclear power plant. (M.D.). 15 figs., 6 tabs., 17 refs

  7. Nuclear power plant A-1 decommissioning

    International Nuclear Information System (INIS)

    In the presentation, some information concerning the historical background of NPP A-1 in Jaslovske Bohunice, Slovakia is given. The main technical parameters used during production activities concerning the decommissioning of the NPP A-1 to a first stage (i.e. to obtain radiologically safe stage) are solved together with the main contractor, Nuclear Power Plant Research Institute, Trnava, according to an approved project by the Slovak Government and Nuclear Authorities. The technological schemes for the radioactive waste treatment at SE-VYZ o.z. and their main technical parameters are shown as well. (author)

  8. Monitoring of I-131 after Fukushima nuclear power plant disaster and a correction of contribution of I-131 in the discharges of Slovenske elektrarne, Bohunice nuclear power plant

    International Nuclear Information System (INIS)

    After the earthquake and subsequent tsunami in March 2011 Fukushima nuclear power reactors in Japan were damaged. As a result of damage of reactors escaped into air iodine radioactive isotopes which were dispersed by air masses over Europe and Slovakia. Isotope I-131 was identified in samples of the atmosphere and the abstraction of Radiation Control SE EBO. The air from the atmosphere contaminated with isotopes of iodine from the Fukushima ventilation systems that do not contain iodine filters, sucked into the interior of the controlled area, then released in organised way and then measured in the ventilation chimneys of EBO NPP. The measured values thus entered a balance of radioactive discharges. Drain of I-131 from SE EBO was in that period plus a contribution coming from Fukushima NPP and measured activity I-131 had to be corrected.

  9. Corrosion at Nuclear Power Plant from Mössbauer Spectroscopy Point of View

    Science.gov (United States)

    Slugeň, V.; Lipka, J.; Dekan, J.; Tóth, I.; Smieško, I.

    2010-07-01

    Steam generators of four VVER-440 units at nuclear power plants V-1 and V-2 in Jaslovske Bohunice (Slovakia) were gradually changed by new original "Bohunice" design in the 1994-1998 period. Corrosion processes before and after these design and material changes in Bohunice secondary circuit were studied using Mössbauer spectroscopy during the last 25 years. Innovations in the feed water pipeline design as well as material composition improvements were evaluated positively. Mössbauer spectroscopy studies of phase composition of corrosion products were performed on real specimens scrapped from water pipelines or in the form of filters deposits. The corrosion of new feed water pipelines system (from austenitic steel) in combination to innovated operation regimes goes dominantly to magnetite. The hematite presence is mostly on the internal surface of steam generator body and its concentration increases towards the top of the body. In the results interpretation it is necessary to consider also erosion as well as scope and type of maintenance activities. The long-term study of phase composition of corrosion products at VVER reactors is one of precondition for the safe operation over the projected NPP lifetime. Keywords: Enter Keywords here. Text should remain 10-pt.

  10. Installation in the A-1 plant of an experimental bituminization line by VUCHZ

    International Nuclear Information System (INIS)

    Following the termination of the experimental operation of the bituminization line at the Research Institute for Chemical Installations in Brno, the line was dismantled and transferred to the nucler power plant in Jaslovske Bohunice. The installation of the line, the layout of the assemblies are described and the results of tests with non-radioactive simulated wastes and actual radioactive wastes briefly described. An amount of 3.2 m3 of actual radioactive wastes from the V-1 nuclear power plant was processed in the tests. The results confirmed the suitability of bituminization for processing liquid radioactive wastes from WWER nuclear power plants. (Z.M.)

  11. The nuclear power plant A1 in cube

    International Nuclear Information System (INIS)

    In this book the history of constructing, main characteristics, complex examination, physical commissioning, energetic commissioning, exploitation, active zone, fuel elements, nuclear reactor, primary circuits, circuits of heavy water, secondary circuits, gaseous management, transport-technologic equipment, measurement and regulation, electric schema, dosimetry, system of tightness control of covering fuel elements, equipment of chemical technology and chemical regime, emergency circuits of the reactor, serious accident in A1 NPP, leakages of vapour-generators of the A1 nuclear power plant in Jaslovske Bohunice (the Slovak Republic) are described.

  12. Statistical analysis of occupational exposure in nuclear power plants

    International Nuclear Information System (INIS)

    Occupational doses have wide variations from zero to high values on the logarithmic scale, according to the workers jobs. However as radiation control programmes constrain higher exposures more, the variation of higher doses changes from log to linear scale, while the structure of lower doses remain. In the paper we analyse the annual effective doses of workers in 3 nuclear power plants of Jaslovske Bohunice using various distribution models. The hybrid-lognormal description of the annual dose distribution makes it possible to assess also the annual collective doses below the adopted recording level. Two methods of analysing the 'lost' occupational collective doses are presented

  13. Nomogram of economic efficiency of extending the life of the V-1 nuclear power plant

    International Nuclear Information System (INIS)

    The evaluation was processed of the economic efficiency of extending the life of the V-1 nuclear power plant in Jaslovske Bohunice. The power plant is expected to be shut down for reconstruction in 1995, i.e., in its 16th year in operation. The evalulation considered reconstruction within a 2 to 5 years' period, the costs at 6 to 12 thousand million crowns and decommissioning between the years 2005 to 2015. The results are processed in a nomogram of specific annual updated costs for supplied electric power. (Z.M.). 2 figs., 1 tab., 2 refs

  14. The LBB methodology application results performed on the safety related piping of NPP V-1 in Jaslovske Bohunice

    Energy Technology Data Exchange (ETDEWEB)

    Kupca, L.; Beno, P. [Nuclear Power Plants Research Institute, Trnava (Slovakia)

    1997-04-01

    A broad overview of the leak before break (LBB) application to the Slovakian V-1 nuclear power plant is presented in the paper. LBB was applied to the primary cooling circuit and surge lines of both WWER 440 type units, and also used to assess the integrity of safety related piping in the feed water and main steam systems. Experiments and calculations performed included analyses of stresses, material mechanical properties, corrosion, fatigue damage, stability of heavy component supports, water hammer, and leak rates. A list of analysis results and recommendations are included in the paper.

  15. Damage of primary collector bolts of steam generators of units I and II of SEP Bohunice nuclear power plant in 1989

    International Nuclear Information System (INIS)

    115 out of 204 bolts were defected. The manufacturer's records showed that the bolt material was free of faults, and thus the causes of the defects were sought elsewhere. The material was subjected to capillary, ultrasonic, eddy current and metallographic analyses. Metallographic analysis of the lubricant was also performed. Intergranular cracks were detected; these were due to stress corrosion cracking, probably caused by chemical changes in the lubricant (molybdenum sulfide) bringing about changes in the corrosion medium and deposition of chlorides in the threads. Mechanical stress is another risk factor. It is recommended that a different lubricant be used and tensometric measurements be performed, or alternatively, a more suitable type of steel be developed. (M.D.). 3 tabs., 1 fig., 4 refs

  16. Computation code TEP 1 for automated evaluation of technical and economic parameters of operation of WWER-440 nuclear power plant units

    International Nuclear Information System (INIS)

    The TEP 1 program is used for automated evaluation of the technical and economic parameters of nuclear power plant units with WWER-440 reactors. This is an application program developed by the Research Institute for Nuclear Power Plants in Jaslovske Bohunice for the KOMPLEX-URAN 2M information system, delivered by the USSR to the V-2 nuclear power plants in Jaslovske Bohunice and in Dukovany. The TEP 1 program is written in FORTRAN IV and its operation has two parts. First the evaluation of technical and economic parameters of operation for a calculation interval of 10 mins and second, the control of the calculation procedure, follow-up on input data, determination of technical and economic parameters for a lengthy time interval, and data printout and storage. The TEP 1 program was tested at the first unit of the V-2 power plant and no serious faults appeared in the process of the evaluation of technical and economic parameters. A modification of the TEP 1 programme for the Dukovany nuclear power plant is now being tested on the first unit of the plant. (Z.M.)

  17. Performance of TEP 1 computer code for automated evaluation of technical and economic parameters of WWER-440 nuclear power plant units

    International Nuclear Information System (INIS)

    The TEP 1 program has been written for automatic evaluation of technical and economic parameters of a nuclear power plant with WWER-440 units. The results are discussed of the trial run of the program within the framework of the KOMPLEX-URAN 2M information system at the Jaslovske Bohunice V-2 nuclear power plant between December 1985 and March 1986. The program provides mean and integral values of such variables as are the temperature and flow rate of feed water, the temperature of cooling water before the main condenser, etc., but also data on the thermal power of the reactor, on own heat consumption and own power consumption and on terminal power output. The trial run of TEP 1 showed that it serves to considerably improve the information system and contributes to an increased efficiency of the nuclear power plant operation. After the trial run the TEP 1 program was put into routine operation at the Jaslovske Bohunice power plant and it is expected to be put into operation at the Dukovany power plant. (Z.M.) l tab., 3 refs

  18. Comparison of output costs for conventional and nuclear power plants

    International Nuclear Information System (INIS)

    Within a comparison of output costs per 1 MWh (consisting of fuel costs, operating and maintenance costs and depreciation costs) from conventional and nuclear power plants in Czechoslovakia, the values are reported of the costs, and their development is discussed over the years 1979-1984. The comparison is favourable for the nuclear power plants. For instance, in 1984 the output costs in the nuclear power plants were 124 CKR/MWh, in conventional steam fired power plants 275 CKR/MWh and in hydros 251 CKR/MWh. This in spite of the adverse effect of the start-up of the V-2 nuclear power plant at Jaslovske Bohunice in the same year when the availability of the plant was naturally very low. The output costs of the V-1 nuclear power plant in that year were 130 CKR/MWh. It can be expected that in future, the figures will be even more favourable for the nuclear power plants in view of the fact that coal-fired conventional power plants will have to be provided with sulfur separators, which will further increase the production costs per MWh delivered. It is estimated that specific capital costs in the construction of a new conventional power plant provided with the separator will probably approach those for a nuclear power plant. (Z.M.) 2 figs., 6 tabs., 6 refs

  19. Requirements for increasing economic efficiency in construction of Czechoslovak nuclear power plants within the framework of reconstruction and intensification of national economy

    International Nuclear Information System (INIS)

    The present economic effectiveness is assessed for the Bohunice V1 and V2, Dukovany, Mochovce and Temelin nuclear power plants. The development of capital investments of the WWER-440 and WWER-1000 units is demonstrated, as is the development of specific (per generated MWh) production costs of nuclear power plants that are in operation or under construction. The specific total cost indices of nuclear power plants are compared with those of conventional power plants; in 1980-1987, the former were a mere 70% with respect to the latter. The effectiveness of nuclear power plants is evaluated from the point of view of return on capital investment (including costs of the future decommissioning). Material indices of the construction of Czechoslovak nuclear power plants are found considerably higher than those for comparable nuclear power plants in developed industrial countries (Middletown, USA, and Biblis B, FRG). Using the overall index (weighted average) of total consumption of the main components in the construction of selected nuclear power plants in Czechoslovakia, the Dukovany nuclear power plant is found 2.6-fold more material and construction-time demanding than the Middletown nuclear power plant and 4.4-fold more demanding than Biblis B. For the Temelin nuclear power plant the results are somewhat more favorable: the index ratios are 2.2 and 3.8, respectively. Selected technical and economic data of the operation of the Bohunice V1 and V2 and the Dukovany nuclear power plants are given, and the positive contribution of construction of nuclear power plants till 2000 to environmental protection is outlined. (Z.S.). 4 tabs

  20. The most extensive reconstruction of nuclear power plant with VVER 440/V230 reactor

    International Nuclear Information System (INIS)

    The nuclear power plant V-1 Bohunice consists of two VVER-440 units with V-230 reactors. Unit 1 was commissioned in 1978 and Unit 2 in 1980. Large experience and knowledge from the operation of previous units with V-230 reactors were incorporated into the V-1 design, which resulted in a higher level of safety and operational reliability of these units. The Siemens company which won an international bidding process developed these basic goals for the Gradual Upgrading into the so called Basic Engineering (BE). For the implementation of the Gradual Upgrading in line with the BE, Rekon consortium was established consisting of Siemens and VUJE. The implementation of the Gradual Upgrading is scheduled for the time period of 1996 - 2000. Siemens was responsible for the upgrading strategy - based on the approved results of the basic engineering phase and the PSAR, the engineering and realization of all I and C improvements, and also for the seismic upgrade. VUJE's responsibility covered the detailed engineering and implementation of mechanical, electrical and civil part of upgrading measures as well as overall organisation and evaluation of verification tests. The consortium awarded contracts for final planning and design, installation services and commissioning to other Slovakian subcontractors in order to ensure the largest possible local content. The gradual reconstruction of the V-1 Bohunice with V230 reactors represents a comprehensive reconstruction of safety-related systems and equipment. Following its completion, the units will be operated with a safety level accepted internationally. (author)

  1. Application of heat storage in increasing operating flexibility of newly built WWER type reactor power plants in the CSSR for peak electric power generation and for offsetting plant capacity decrease due to heat supply

    International Nuclear Information System (INIS)

    In order to increase the production of electric energy during power peaks a method is suggested for heat storage. At the Dukovany nuclear power plant this is the heat storage in hot feed water based on heating a greater amount of turbine condensate. At the Jaslovske Bohunice nuclear power plant V-2 the possibility is being studied of securing heat offtake from the condensing turbines, this both for power and heating purposes. At the Mochovce nuclear power plant V-4 they are concerned with a combined generation of power and heat from the heating process water of turbines with modified design. The operation is described of the heat offtake from the heating process water at the Temelin nuclear power plant V-5. (M.D.)

  2. Program increasing of nuclear power plant safeness

    International Nuclear Information System (INIS)

    The results achieved within the project of national task 'Program increasing of nuclear power plant safeness' are presented in the document. The project was aimed to extend and deepen activities relating to safety increase of nuclear power units WWER-440 which play significant part in electricity production in the Slovak Republic. The application of advanced foreign calculating programs and calculation of radionuclide spreading in environment and techniques will influence the increase of extent, quality and international acceptance of safety analysis of nuclear power plant blocks WWER-440 and the risk valuation from operating nuclear power plants. Methodic resources for coping in emergency situation in nuclear energetics will be used for support in decision making in real time during radiation emergency on nuclear plant, region and state level. A long-term strategy in dealing with burnt fuel and radioactive substance formatting during nuclear power plant liquidation particularly with waste which is un acceptable in regional dump, has developed into a theoretical and practical preparation of solvable group for operating the converting centre Bohunice and in inactivating the nuclear power plant A-1. The diagnostic activities in nuclear power plants in the Slovak Republic have been elaborated into a project of norm documents in accordance with international norms for diagnostic systems. Presentation of new technologies and materials for repairs and reconstructions of components and nuclear power plant knots qualify increase in their reliability, safety and life. New objective methods and criterions for valuation and monitoring of the residual life and safety of fixed nuclear power plants. Results of problem solving linked with connecting the blocks of nuclear power plants to frequency regulation in electric network in the Slovak Republic are also presented in the document

  3. Radiocarbon in the Atmosphere of the Žlkovce Monitoring Station of the Bohunice NPP: 25 Years of Continuous Monthly Measurements

    Czech Academy of Sciences Publication Activity Database

    Povinec, P.; Sivo, A.; Ješkovský, M.; Světlík, Ivo; Richtáriková, M.; Kaizer, J.

    2015-01-01

    Roč. 57, č. 3 (2015), s. 355-362. ISSN 0033-8222 Institutional support: RVO:61389005 Keywords : nuclear power plants * C-14 * carbon -14 Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders Impact factor: 2.228, year: 2014

  4. Characteristics of subsidence of power plants built on compressible foundation soils

    International Nuclear Information System (INIS)

    The characteristics are presented of the subsoil of the foundation slab for the reactors of the Bohunice V-2 nuclear power plant. The problems are discussed of the inclination of the foundation slab of the reactor units with regard to its uneven subsidence. The results are presented of the measurement and calculation of the process of subsidence, and extrapolation calculations are made. The inclination of the foundation slabs of units 1 and 2 was compensated in 1984 by adjusting the pressure vessels into counter-inclination. The pressure vessel of unit 1 did not incline any further, in unit 2 the process slowed down briefly but then continued at a quicker pace. The causes are discussed and an analysis made of the subsidence of the foundation slabs of the two units. The prognosis shows that during the service life of the nuclear power plant the inclining process should not exceed the tolerance limit. (J.B.). 1 tab., 11 figs., 19 refs

  5. Foundations and practical applications of the theory of nuclear power plant reliability

    International Nuclear Information System (INIS)

    The reliability of nuclear power installations is discussed with regard to material fatigue. The concept of reliability is defined and on the basis of the probability theory the probability was computed of failure-free operation. The parametric and nonparametric methods are given of estimating the reliability parameters, and the basic terms introduced of systems analysis. Reliability is assessed using the fault tree method. The probability of accident chains was analysed using the event tree. The reliability information system is described implemented in nuclear power plants with WWER-440 reactors. The system of standardization in nuclear power engineering in the capitalist countries and in CMEA countries is given. The method of stochastic prediction is used for mathematical modelling of the failure-free operation of engineering parts of a nuclear reactor. Operating experience and reliability of the V-1 nuclear power plant in Jaslovske Bohunice is compared with foreign experience. (E.F.)

  6. Method of realization and exploitation of monitoring system for accuracy and reliability characteristics of standard temperature measurements in WWER-440 reactors at NPP Bohunice V1

    International Nuclear Information System (INIS)

    The sequences in development of computer equipment s and the sequences in development of measurement tools and procedures are listed in submitted presentation - from start-up the power plant in operation until present days. Present status of integration of a monitoring system for accuracy and reliability characteristics of standard temperature measurements in WWER-440 reactors in NPP V1 is presented here. The ways of data acquisition, storing of results and their evaluation are described in this presentation. In conclusion some practical possibilities of using a a monitoring system for accuracy and reliability are listed. (Authors)

  7. Minimization of formation of wastes from the operation of Czechoslovak nuclear power plants

    International Nuclear Information System (INIS)

    The problem of generation of liquid radioactive wastes at VVER 440 reactor type nuclear power plants at Jaslovske Bohunice, and Dukovany is discussed. Treatment processes at the NPPs are described. The process during which the operating liquid radioactive wastes emerge is analyzed and the major contributors are identified. The technical approaches to the optimization of the performance of the purification stations that have been implemented at the NPPs with the aim to reduce the generation of radioactive wastes are outlined. The basic results of investigation into the potential of membrane processes are given, as are the results of pilot scale experiments concerned with the use of reverse osmosis in the purification of selected water streams. Attention is also devoted to technical solutions that have been introduced in the design of the Temelin NPP. These solutions are based on the acquired experience and recommendations of foreign experts

  8. Declare of radionuclides content in radioactive wastes of nuclear power plants

    International Nuclear Information System (INIS)

    Determination of the classification of radioactive waste involves two consideration. First, consideration must be given to the concentration of long-lived radionuclides and their shorter-lived precursors and second, consideration must be given to the concentration of shorter-lived radionuclides for which requirements on institutional controls waste form, and disposal methods are effective. Final disposal low and intermediate level radioactive waste have to meet certain requirements of regulations, one of this is the estimation of the radionuclide inventory. As most of nuclides are difficult to measure, the correlation between critical nuclides and some other easily measurable key nuclides such as 60Co and 137Cs are investigate for typical waste streams of Nuclear Power Plant Jaslovske Bohunice (Slovakia). Scaling factors for difficult to measure nuclides can be derived with acceptable correlation from samples collected annually from the waste stream. (authors)

  9. National approach to economic performance indicators for nuclear power plants: Slovakia

    International Nuclear Information System (INIS)

    The size of the Slovak Republic is 49,036 km2. In 2000, there were about 5.4 millions inhabitants and the population density was 110/km2. In 2000, the GDP decreased to $19.7 billion compared with $21.3 billion in 1998. Slovakia has only limited domestic energy resources, i.e. lignite, oil, natural gas and renewable resources. The energy potential of renewable resources in Slovakia represents approximately 5% of the total annual consumption of primary energy resources. In 2000, the electricity production from Slovak Electric was 26.3 TW·h (about 85%) and from other producers 4.6 TW·h (15%). The latter group consists mainly of energy generators in factories (car producers). The dominant producer of electricity in Slovakia is Slovak Electric, which is owned by the National Property Fund. About 90% of the distribution and sale of electricity are done by regional energy enterprises. The power grid operates within the framework of the Central Regional Net (Czech Republic, Hungary, Poland and Slovakia). In October 1995, a long term trial test of the joint operation with the UCPTE started. Another important measure related to the nuclear power sector is the Government decree on the closure of the two oldest units at the Bohunice V-1 nuclear power plant in 2006 and 2008, respectively. By implementing a programme of modernization and safety upgrading of the Bohunice V-2 nuclear power plant, extension of the V-2 design lifetime will be enabled and the high level of safety maintained. The decision on the completion of Mochovce units 3 and 4 will depend on any interest shown by a strategic partner, as no guaranty of the State is possible. It is expected that a major part of the increase in electricity demand will be covered by developing the production of independent generators, mainly based on the steam-gas cycle

  10. Safety aspects of operation of nuclear power plants. Results achieved

    International Nuclear Information System (INIS)

    Three main factors are discussed which affect the safety of nuclear power plant operation in Czechoslovak conditions. In order to assure the quality of components important for nuclear safety and to maintain it throughout their service life, the Czechoslovak Atomic Energy Commission issued a Decree in 1979 whose essence was in that already the safety report should identity components with a view to nuclear safety. Individual programmes of quality assurance are then drawn up for these components. At present, an amendment is being prepared for the Decree. The second factor is the quality of operating personnel of all categories, and especially of the so-called selected categories. In 1979 a unified system was introduced of nuclear power plant personnel training. Since 1984 the training institution has been provided with a full-size simulator. The third factor is the quality of the operation management of the facility, especially as concerns the observance of limits and conditions of safe operation. The respective document has been available for V-213 reactors since 1982, for V-230 units of the V-1 nuclear power plant in Jaslovske Bohunice since 1988. A system has been introduced of data collection, evaluation and distribution relating to failures in Czechoslovak nuclear power plants, based on IAEA recommendations. It has a very low threshold for reporting failures so that on average some 80 failures are reported for every operating unit. (Z.M.)

  11. Geomorphologic specificities of selected sites for nuclear power plants in Czechoslovakia

    International Nuclear Information System (INIS)

    The contribution of geomorphology to the complex evaluation of properties of sites for the construction and operation of nuclear facilities is demonstrated. The unique manifestation of the present geodynamics at the Jaslovske Bohunice nuclear power plant locality and the spatial correlations of annals of the specific morphotectonic development of georeliefs of that nuclear power plant with the location of the epicentral earthquake zones are shown. The results of the geomorphological survey in the surroundings of the Temelin nuclear power plant construction site are described and a drawing is reproduced showing how the georelief of this locality divides into areas with different categories of occurrence of morpho-structural formations. For the Tetov locality, where the construction of a nuclear power plant is planned, the changes in the course of the Labe (Elbe) river which occurred in the Pleistocene are of importance in the assessment of the intensity of geodynamic processes. The geomorphological and geotectonic complexity of the planned Blahutovice nuclear power plant construction site is demonstrated. A drawing shows the morphotectonic situation in the surroundings of that construction site. (Z.S.). 4 figs

  12. Safety improvement of nuclear power plants with WWER-440 reactors type V-230

    International Nuclear Information System (INIS)

    Safety analysis was performed for the V-230 type WWER-440 un of the V-1 nuclear power plant at Jaslovske Bohunice in Czechoslovakia. As compared with the improved V-213 type, differences occur mainly in the automated control systems of technological processes and in the main circulation pumps. The Soviet 1986 recommendations for increasing the V-1 nuclear power plant safety are given. It is concluded that all aspects have to be taken into consideration when making decisions with respect t the reconstruction of the V-1 units. For instance, owing to the low investment costs the price of 1 MWh power generated at this plant is 100 CSC lower than at the V-2 nuclear power plant; and this favorable relation would be disturbed by in-depth reconstruction. Hence, the decisions to be made must take into account the plant operation economy, the technical state of the pressure devices as well as the out-of-dateness of the safety conception, which, however, may seem different today and in 5 to 10 years when the reconstruction will be accomplished. (Z.M.). 4 tabs., 1 ref

  13. OE Management at Mochovce Nuclear Power Plant, Slovakia

    International Nuclear Information System (INIS)

    Full text: Brief description of nuclear facility. Slovenske elektrarne - ENEL utility operates two nuclear power plants in southern Slovakia - Bohunice and Mochovce nuclear power plants. Both plants are of the same design (WWER 440/V213). The Mochovce plant operates two units; Unit 1 has supplied electricity to the network since 1998, and Unit 2 since 2000. The Mochovce units rank among the newest WWER 440/V 213 nuclear blocks and benefit from all the improvements already made at the plant. Overview of OE arrangements. The basic management expectations concerning the OE programme are defined by the utility's policy. Assessment of the effectiveness of the OE programme is performed locally at the plant and independently at the utility level. This utility assessment serves as input to overall improvement process of OE programme at the plant. Management arrangements. The IAEA performed a pre-OSART mission in 1994 before the Mochovce plant began operation. Based on the recommendations of the mission, the Mochovce plant established an OE programme and an organizational structure to support it. The plant operation started with a fully functioning OE system. The plant director is responsible for implementation of an effective OE programme, in accordance with the national regulatory body requirements, WANO and IAEA expectations and the utility's policy. The OE programme owner is head of the safety division, who ensures that reported events and near misses are screened and analysed, and that corrective actions are taken with regard to the safety significance of the problem. Implementation of daily activities connected with the OE programme, screening, investigation of events, assessment of effective implementation of the corrective actions taken, assessment of OE programme effectiveness through performance indicators, and updating information in the OE database are the responsibility of head of the OE section. The section is located in the Safety Division and consists of

  14. Nuclear power plants: 2006 atw compact statistics; atw Schnellstatistik Kernkraftwerke 2006

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2007-01-15

    At the turn of 2006/2007, nuclear power plants were available for energy supply, or under construction, in 32 countries of the world. A total of 437 nuclear power plants, which is 7 plants less than at the 2005/2006 turn, were in operation in 31 countries with an aggregate gross power of approx. 388 GWe and an aggregate net power, respectively, of 369 GWe. The available gross power of nuclear power plants dropped by approx. 1.6 GWe, the available net power, by approx. 1.2 GWe. The Tarapur 3 nuclear generating unit was commissioned in India, a D{sub 2}O PWR of 540 MWe gross power. Power operation was discontinued for good in 2006 only in nuclear power plants in Europe: Bohunice 1 (Slovak Republic, 440/408 MWe, VVER PWR); Kozloduy 3 and Kozloduy 4 (Bulgaria, 440/408 MWe each, VVER PWR); Dungeness A1 and Dungeness A2 (United Kingdom, 245/219 MWe each, Magnox GGR); Sizewell A1 and Sizewell A2 (United Kingdom, 236/210 MWe each, Magnox GGR), and Jose Cabrera 1 (Zorita) (Spain, 160/153 MWe, PWR). 29 nuclear generating units, i.e. 8 plants more than at the end of 2005, with an aggregate gross power of approx. 28 GWe, were under construction in 10 countries end of 2006. In China, construction of the Qinshan II-3, Qinshan II-4 nuclear generating units was started. In the Republic of Korea, construction work began on 4 new projects: Shin Kori 1, Shin Kori 2, and Shin Wolsong 1, Shin Wolsong 2. In Russia, work was resumed on the BN-800 sodium-cooled fast breeder reactor project at Beloyarsk and the RBMK Kursk 5. Some 40 new nuclear power plants are in the concrete project design, planning and licensing phases worldwide; on some of them, contracts have already been awarded. Another approximately seventy units are in their preliminary project phases. (orig.)

  15. Comparison of Planning, Management and Organizational Aspects of Nuclear Power Plants A1 and V1 Decommissioning

    International Nuclear Information System (INIS)

    This contribution deals with planning, management and organizational aspects of decommissioning of NPP shut down due to the accident (prototype NPP A1) and NPP shut down after normal operation (NPP V1). The A1 and V1 NPPs are located very close in Bohunice nuclear site however both plants have very different technology and operational history. The preparation of A1 NPP decommissioning strategy and relevant decommissioning plans was long term process, because the plant was shut down after the accident in 1977 and decommissioning was implemented first time in Slovakia with many specific difficulties. The decommissioning planning of V1 NPP was shorter and easier, because the plant was shut down after normal operation, there were lessons learned from the A1 NPP decommissioning planning, available legislation, available financing etc. Development of decommissioning strategies, preparation and planning for decommissioning, development of legislation for decommissioning, management of decommissioning projects and other aspects are described and compared. Lessons learned are formulated on the basis of analysis of past, ongoing and planned decommissioning activities in Slovakia. (author)

  16. Decommissioning of nuclear power plants and its effect on the environment

    International Nuclear Information System (INIS)

    The three basic steps of nuclear power plant decommissioning are discussed. Each of them is characterized by two parameters: the physical state of the plant and its equipment, and the extent of inspections, surveillance and tests that must be performed or ensured in accordance with the physical state. The decommissioning involves two kinds of effort which are contradictory with respect to environmental risk: first, efforts are made to reduce to minimum the amount of radioactive products in the power plant equipment and buildings; this, however, is associated with substantial interventions into the contaminated facilities, which bring about enhanced risk of personnel exposure and radioactivity leaks into the environment. The basic principles are given that must be adhered to in order to protect the surroundings during the decommissioning. Actually, the surroundings and environment can be stressed appreciably by the large amounts of radioactive wastes emerging from the decommissioning activities. The composition of the wastes is diverse. The majority is solid waste, mostly scrap: for the decommissioned A-1 nuclear power plant in Jaslovske Bohunice the total amount of contaminated steel will be about 10 600 t. Liquid wastes are largely consist of spent decontamination solutions. As compared with normal operation, the risk of external irradiation as well as of internal contamination during the disassembling of the technological equipment is higher. In Czechoslovakia, the problem of nuclear power plant decommissioning became topical as early as 1977, after an accident during which a serious fuel element failure gave rise to a marked contamination of the primary and auxiliary circuits. For these reasons, the decommissioning process is very complicated and has not yet been fully solved. Some experience from the decommissioning of the A-1 nuclear power plant is summarized; in this activity, minimization of potential sources of radioactivity leaks into the environment is

  17. Experiences with electronic personal dosimeters at Dukovany Nuclear Power Plant-Czech Republic

    International Nuclear Information System (INIS)

    The Dukovany Nuclear Power Plant operates four WWER-440 type reactors. Unit 1 has been operating since 1985, Unit 2 and Unit 3 since 1986, Unit 4 was connected to the grid in 1987. At Dukovany NPP occupational dosimetry is performed by approved Personal Dosimetry Service. The basic facilities for measuring external exposure are film badge (legal dosimeter), electronic personal dosimeter (EPD) and radio-photoluminescent dosimeter (RPL) as operational dosimeter, TLD for measuring doses to the extremities and TLD albedo dosimeter as neutron dosimeter. The presentation is based on the experiences with electronic personal dosimeters gathered at Dukovany NPP for the last three years. Electronic Personal Dosimetry System (EPDS) was developing by Czech company VF, a.s. and from 2002 year is also used at Temelin NPP (Czech Republic), SE VYZ Bohunice (Slovakia) and SE Mochovce NPP (Slovakia) as well. EPDS is designed for Merlin Gerin, Siemens and RADOS electronic dosimeters. Application SW for data analysis is used for daily monitoring of personal doses and for evaluation of collective doses during outages. System gives information about collective doses on devices and collective doses for select work tasks during outages. In addition EPDS allows the calculation of dose indexes ID. (ID is the ratio of the relevant collective dose and the number of equivalent working hours). This information is applicable for planning doses on special working activities for next outages and allows a detection radiation sources also

  18. Experiences Gained from Independent Assessment in Licensing of Advanced I and C Systems in Nuclear Power Plants

    International Nuclear Information System (INIS)

    Operational benefits and enlarged functionality of modern technology, but also the physical and the technological aging of conventional instrumentation and control (I and C) systems, are motivations for modernization of I and C systems in nuclear power plants (NPPs). In case of safety-relevant I and C systems, the licensing authorities require the demonstration of sufficient safety of the systems.In several countries ongoing research and development projects are directed to provide a scientific basis and engineering solutions for cost-effective assessment of software-based I and C systems important to safety in NPPs. International initiatives have been started to develop a harmonized safety assessment methodology. The Institute for Safety Technology (ISTec) has been engaged in national and international programs as well as in establishing a two-phase qualification approach, which comprises a generic plant-independent qualification of hardware and software components and a plant-specific system qualification phase.In both generic qualification and plant-specific system qualification, ISTec has been involved as an independent third-party assessor for the relevant state authority. This paper reports experiences from the ISTec involvement in the assessment projects, e.g., in the assessment of the I and C important to safety in the new German High-Flux Research Reactor (FRM-2) in Munich and in the assessments of I and C modernization in NPPs of foreign countries (Bohunice, Slovak Republic; Paks, Hungary; and others). Conclusions are drawn from the experiences with respect to the practicability of the two-phase qualification concept and from the major findings in the plant-specific I and C assessments

  19. Safety of nuclear power plants in Slovak Republic in the context of integration into the European Union

    International Nuclear Information System (INIS)

    A review of the construction and operation of nuclear power plants in Slovak Republic which belong within Slovenske Elektrarne is made. Since 1993 with the applying of the Least Cost Planning Methods and Financial Feasibility Analysis the optimal variant, considering construction completion of the two units at Mochovce NPP, has been adopted and a project for safety enhancement has been implemented. Some changes have been made in siting project in order to meet the seismic requirements, following by change of the control system design and supplier. The most important result of the safety enhancement program, important not only for NPP Mochovce, but also for all NPPs of WWER 440/213 type, is the fact, that operability of containment with passive bubbler-condenser system for pressure suppression and its acceptability from safety point of view, has been fully confirmed. Results of safety enhancement program have been re-evaluated not only by International Atomic Energy Agency, but also by other international authorities and professional organisations with positive result. Especially significant is the conclusion of RISKAUDIT, which has carried out repeated evaluation of safety level of NPP Mochovce based on PHARE project and which is accepted by European Commission. A similar approach for enhancing the safety has been applied for the NPP V-1 units at Jaslovske Bohunice

  20. Crevice chemistry investigation using crevice model in real plant condition

    International Nuclear Information System (INIS)

    Corrosion problems of nuclear power plant components represent an important factor both in the field of operational safety and in the plant life extension strategies. In the case of steam generators, where the purity of feed water of operated units is approaching to the theoretical values of pure water main attention is focused to critical localities of occluded volumes with heat flux. In these discrete areas, relatively rapid concentration process of trace impurities present in feed water takes place. As a result, high local concentrations exist providing thus appropriate conditions for the initiation of corrosion cracking of austenitic stainless steel components. Localities threatened by corrosion under this mechanism (structural crevices tube - collector (tube sheet), tube - tube support plate, crevices under deposits on the free span of tubes) are during operation of steam generators completely inaccessible and the nature of crevice environment can be considered only on the basis of hideout return data evaluation. For a more detailed analysis of processes in WWER-440 SG structural crevices with the heat flux and for monitoring of crevice environment, NRI Rez developed steam generator crevice model with several instrumentation and sampling capabilities - so called EES (Electrochemical Evaluation System). This crevice model was initially tested in the NRI laboratories using various model solutions, later it was installed directly at the Nuclear Power Plant Bohunice, where it was fed by real SG feedwater. During the years 2008/9 significant sets of data have been obtained including artificial HORs, bulk and crevice samplings, and destructive evaluation of two crevice modeling heads after 5 months and 8 months of operation. Results have demonstrated high salinity of local environment, but no corrosion initiation was identified on the austenitic materials exposed to that environment. On the contrary, experimental data in the past proved sensitivity of Russian Ti

  1. Plant physiology

    CERN Document Server

    Duca, Maria

    2015-01-01

    This book covers all aspects of plant physiology: plant cell physiology, water regime of plants, photosynthesis, mineral nutrition, plant respiration, plant growth and development, movements in plants, signal perception and transduction etc. It focuses on the fundamental principles of plant physiology and biochemistry from the molecular level to whole plants, on the mechanisms of plant-environment interactions. The book is intended for students (biologists, physiologists, biochemists, biophysicists, ecologists, geneticists), teachers and researchers. Particular emphasis is given to recent research advances made on national and international levels, as well as to personal experimental results of the author that are relevant for a deeper understanding of processes and for practical implementation of gained knowledge. An essential amount of illustrative material (graphics, images, schemes, illustrations) completes the text and supplies additional information in an accessible manner. At the end of each chapter...

  2. Poisonous Plants

    Science.gov (United States)

    ... Publications and Products Programs Contact NIOSH NIOSH POISONOUS PLANTS Recommend on Facebook Tweet Share Compartir Photo courtesy ... U.S. Department of Agriculture Many native and exotic plants are poisonous to humans when ingested or if ...

  3. Manufacturing Plants

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    China starts to produce vegetables and fruits in a factory sunshine,air and soil are indispensable for green plants. This might be axiomatic but not in a plant factory. By creating a plant factory,scientists are trying to grow plants where natural elements are deficient or absent,such as deserts, islands,water surfaces,South and North poles and space,as well as in human habitats such as skyscrapers in modern cities.

  4. Manufacturing Plants

    Institute of Scientific and Technical Information of China (English)

    TANG YUANKAI

    2010-01-01

    @@ Sunshine, air and soil are indispensable for green plants. This might be axi-omatic but not in a plant factory. By creating a plant factory, scientists are trying to grow plants where natural elements are deficient or absent, such as deserts,islands, water surfaces, South and North poles and space, as well as in human habi-tats such as skyscrapers in modern cities.

  5. Aquatic plants

    DEFF Research Database (Denmark)

    Madsen, T. V.; Sand-Jensen, K.

    2006-01-01

    Aquatic fl owering plants form a relatively young plant group on an evolutionary timescale. The group has developed over the past 80 million years from terrestrial fl owering plants that re-colonised the aquatic environment after 60-100 million years on land. The exchange of species between...... terrestrial and aquatic environments continues today and is very intensive along stream banks. In this chapter we describe the physical and chemical barriers to the exchange of plants between land and water....

  6. Human sources

    International Nuclear Information System (INIS)

    Staff preparation and development, preventive medical care, reconditions stays, employees toning-up, complementary pension insurance, and plant boarding carried out by the Nuclear power plants Jaslovske Bohunice in 1997 are presented

  7. Medicinal Plants.

    Science.gov (United States)

    Phillipson, J. David

    1997-01-01

    Highlights the demand for medicinal plants as pharmaceuticals and the demand for health care treatments worldwide and the issues that arise from this. Discusses new drugs from plants, anticancer drugs, antiviral drugs, antimalarial drugs, herbal remedies, quality, safety, efficacy, and conservation of plants. Contains 30 references. (JRH)

  8. Skills enhancement in the nuclear power sector: education upgrading, training, and the Nuclear Power Plant Personnel Training Centre

    International Nuclear Information System (INIS)

    The article gives an overview of how the needs of the Slovak power sector and nuclear industry with respect to personnel skills and training are addressed and satisfied. The needs are driven by the recent significant legislative changes, continuing modernization of the Bohunice V-2 units, preparation of the Bohunice V-1 units for shutdown, and completion of the Mochovce 3 and 4 units, in connection with the licence holder's recruitment and training of qualified and competent staff. The forms, methods and means used within the theoretical and practical training, including the use of a reactor simulator, are highlighted. (author)

  9. Plant Behavior

    Science.gov (United States)

    Liu, Dennis W. C.

    2014-01-01

    Plants are a huge and diverse group of organisms, ranging from microscopic marine phytoplankton to enormous terrestrial trees epitomized by the giant sequoia: 300 feet tall, living 3000 years, and weighing as much as 3000 tons. For this plant issue of "CBE-Life Sciences Education," the author focuses on a botanical topic that most…

  10. Planting Trees

    OpenAIRE

    Relf, Diane

    2009-01-01

    The key aspects in planning a tree planting are determining the function of the tree, the site conditions, that the tree is suited to site conditions and space, and if you are better served by a container-grown. After the tree is planted according to the prescribed steps, you must irrigate as needed and mulch the root zone area.

  11. Plant Identification.

    Science.gov (United States)

    National Audubon Society, New York, NY.

    This set of teaching aids consists of 12 Audubon Nature Bulletins, providing teachers and students with informational reading on plants. The bulletins include these titles: The Parade of Spring Wild Flowers, Wild Flowers of Our Prairies, Seeds and How They Travel, Poison Ivy and Other Poisonous Plants, The Forest Community, Common Trees and Their…

  12. State supervision of nuclear power technology installation safety

    International Nuclear Information System (INIS)

    State technical supervision of labour safety and technical installations and surveillance of working conditions follows up on the work of the former Institute of Technical Supervision. The work and problems tackled by the two institutions are described in the construction and commissioning of the A-1 nuclear power plant in Bohunice, in designing and construction of the V-1 Bohunice plant and in designing, assembly and commissioning of the active sodium loop at the Power Research Institute at Bohunice. The State Technical Supervision is represented on the Council for Nuclear Safety of the Czechoslovak Atomic Energy Commission. (J.B.)

  13. Plant Macrofossils

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Records of past vegetation and environmental change derived from plant remains large enough to be seen without a microscope (macrofossils), such as leaves, needles,...

  14. Plant Speciation

    OpenAIRE

    Rieseberg, Loren H.; Willis, John H.

    2007-01-01

    Like the formation of animal species, plant speciation is characterized by the evolution of barriers to genetic exchange between previously interbreeding populations. Prezygotic barriers, which impede mating or fertilization between species, typically contribute more to total reproductive isolation in plants than do postzygotic barriers, in which hybrid offspring are selected against. Adaptive divergence in response to ecological factors such as pollinators and habitat commonly drives the evo...

  15. Reconstruction of the Emergency Core Cooling System (ECCS), Confinement Spray System (SSK) and Pressurizer Safety Valves and Relief Line (PVKO)

    International Nuclear Information System (INIS)

    The paper deals with the results of reconstruction of the ECCS, SSK, and PVKO systems as implemented during the Gradual Upgrading with safety upgrading of the Bohunice V1 nuclear power plant 1997 to 2000. (author)

  16. The NPPR Trnava participation in the NPP V-2 modernisation and safety improvement project

    International Nuclear Information System (INIS)

    The presented contribution deals with form, present state and results of Nuclear Power Plants Research Inst.e participation in the NPP V-2 Jaslovske Bohunice Modernization and Safety Improvement Project.(author)

  17. Symbiosis of human with nucleus - the risk and reality

    International Nuclear Information System (INIS)

    In this presentation author deals with the history of development of nuclear power plants in the world and in the Slovak Republic. Some results of radiation monitoring of the vicinity of Jaslovske Bohunice are presented.

  18. Nuclear plant

    International Nuclear Information System (INIS)

    The reception area of a spent fuel centre (back end plant) contains a decontamination device for fuel element transport containers. A two part, symmetrical working platform is used to monitor their surfaces. Both parts can be pushed out of the way and can be adjusted in heighth. A spindle motor and hydraulic motors are used for this purpose. (DG)

  19. Toxic plants

    Science.gov (United States)

    Reproductive performance is the single most important economic animal trait to the livestock industry and is reported to be 5 and 10 times more significant than carcass quality and growth traits respectively. Poisonous plants impact livestock reproductive function in a major way and have been shown...

  20. Audubon Plant Study Program.

    Science.gov (United States)

    National Audubon Society, New York, NY.

    Included are an illustrated student reader, "The Story of Plants and Flowers," an adult leaders' guide, and a large wall chart picturing 37 wildflowers and describing 23 major plant families. The student reader presents these main topics: The Plant Kingdom, The Wonderful World of Plants, Plants Without Flowers, Flowering Plants, Plants Make Food…

  1. Plant biotechnology

    OpenAIRE

    Molina Fernández, Antonio

    2010-01-01

    The first decade of the 21st century has seen an intense debate of the potential contribution of Plant Biotechnology to meeting present and future world demands of food and biomass. The discussion started in 1997 when the first genetically modified (GM) crops were approved by the EPA for commercial production. The debate has been later stimulated by the increasing awareness of the potential effects of global climate change on agricultural production, as the current crops may be poorly adapted...

  2. IAEA meeting report of the consultants' meeting on safety improvements of WWER-440 model 230 nuclear power plants

    International Nuclear Information System (INIS)

    In 1992 the identification and ranking of safety issues for WWER-440/230 NPPs were completed. Some 100 safety issues have been identified and ranked according to their safety impact on the plant's defence in depth. The IAEA work was based on a conceptual design review and a series of safety review missions to each one of the four sites (Bohunice, Kozloduy, Novovoronezh and Kola) where WWER-440/230 NPPs were in operation. Results were published by the IAEA in February and May 1992. Since the initial publications the IAEA has continued its activities and conducted a number of follow-up missions and technical visits to the NPP sites to review the status of implementation of safety upgradings. In September of 1994 a Consultants Meeting (CM) was held in Vienna to consolidate all the information available to the AEA. The results of that meeting were included in the report WWER-SC-107. During 1995-1997 further information became available from technical visits conducted by the IAEA at the four sites. Therefore, in February 1998 the IAEA convened a CM in Vienna to prepare an up-to-date report on the status of safety improvements at WWER-440/230 NPPs. This report contains the results of that meeting. It reviews the status of remedial actions implemented at each plant in response to the safety issues originally identified in the IAEA reports and the remaining safety concerns. For convenience the issues are presented under broad titles related to: integrity of barriers (Section 2); performance of basic functions (Section 3); performance of supporting functions (Section 4); internal hazards (Section 5); external hazards (Section 6); accident analysis (Section 7); operational functions (Section 8); Section 9 provides an overview of the results of PSA studies performed and under way. Section 10 provides specific information on the status of Armenia NPP. It is presented separately because the IAEA assistance to this plant was provided in the framework of the national technical co

  3. Investigation and analysis of SSI effects in seismic response of NPPs EMO and EBO

    International Nuclear Information System (INIS)

    This progress report outlines and describes the analysis and investigations of soil-structure interaction effects in seismic response of Bohunice and Mochovce nuclear power plants. The work carries out consists of theoretical-numerical analysis of soil-structure interaction and the description of the experimental results obtained so far. Investigations were performed for different soil conditions and recommendations were elaborated as to prepare and use long-term monitoring of vibration activity at the Bohunice NPP site

  4. Nuclear installations in Slovakia accords to the convention definition

    International Nuclear Information System (INIS)

    In this part the nuclear power plants Bohunice - Units V-1 and V-2 and NPP Mochovce (description of units, safety reports and safety improvement programs) are described. Description of Bohunice A-1, history and current status of the NPP A-1 and NPP decommissioning program are included. In next parts interim spent fuel storage, technologies of Raw processing and treatment, and treated and solid Raw storage sites are described

  5. Plant fertilizer poisoning

    Science.gov (United States)

    Plant fertilizers and household plant foods are used to improve plant growth. Poisoning can occur if someone swallows these products. Plant fertilizers are mildly poisonous if small amounts are swallowed. ...

  6. Nuclear power plants

    International Nuclear Information System (INIS)

    Data concerning the existing nuclear power plants in the world are presented. The data was retrieved from the SIEN (Nuclear and Energetic Information System) data bank. The information are organized in table forms as follows: nuclear plants, its status and type; installed nuclear power plants by country; nuclear power plants under construction by country; planned nuclear power plants by country; cancelled nuclear power plants by country; shut-down nuclear power plants by country. (E.G.)

  7. LNG plant combined with power plant

    International Nuclear Information System (INIS)

    The LNG plant consumers a lot of power of natural gas cooling and liquefaction. In some LNG plant location, a rapid growth of electric power demand is expected due to the modernization of area and/or the country. The electric power demand will have a peak in day time and low consumption in night time, while the power demand of the LNG plant is almost constant due to its nature. Combining the LNG plant with power plant will contribute an improvement the thermal efficiency of the power plant by keeping higher average load of the power plant, which will lead to a reduction of electrical power generation cost. The sweet fuel gas to the power plant can be extracted from the LNG plant, which will be favorable from view point of clean air of the area. (Author). 5 figs

  8. Plant-plant interactions and environmental change.

    Science.gov (United States)

    Brooker, Rob W

    2006-01-01

    Natural systems are being subjected to unprecedented rates of change and unique pressures from a combination of anthropogenic environmental change drivers. Plant-plant interactions are an important part of the mechanisms governing the response of plant species and communities to these drivers. For example, competition plays a central role in mediating the impacts of atmospheric nitrogen deposition, increased atmospheric carbon dioxide concentrations, climate change and invasive nonnative species. Other plant-plant interaction processes are also being recognized as important factors in determining the impacts of environmental change, including facilitation and evolutionary processes associated with plant-plant interactions. However, plant-plant interactions are not the only factors determining the response of species and communities to environmental change drivers - their activity must be placed within the context of the wide range of factors that regulate species, communities and ecosystems. A major research challenge is to understand when plant-plant interactions play a key role in regulating the impact of environmental change drivers, and the type of role that plant-plant interactions play. Although this is a considerable challenge, some areas of current research may provide the starting point to achieving these goals, and should be pursued through large-scale, integrated, multisite experiments. PMID:16866935

  9. Poinsettia plant exposure

    Science.gov (United States)

    Christmas flower poisoning; Lobster plant poisoning; Painted leaf poisoning ... Leaves, stem, sap of the poinsettia plant ... Poinsettia plant exposure can affect many parts of the body. EYES (IF DIRECT CONTACT OCCURS) Burning Redness STOMACH AND ...

  10. THE PLANT ONTOLOGY CONSORTIUM AND PLANT ONTOLOGIES

    Science.gov (United States)

    The goal of the Plant OntologyTM Consortium is to produce structured controlled vocabularies, arranged in ontologies, that can be applied to plant-based database information even as knowledge of the biology of the relevant plant taxa (e.g., development, anatomy, morphology, genomics, proteomics) is ...

  11. Ethylene insensitive plants

    Science.gov (United States)

    Ecker, Joseph R.; Nehring, Ramlah; McGrath, Robert B.

    2007-05-22

    Nucleic acid and polypeptide sequences are described which relate to an EIN6 gene, a gene involved in the plant ethylene response. Plant transformation vectors and transgenic plants are described which display an altered ethylene-dependent phenotype due to altered expression of EIN6 in transformed plants.

  12. GCFR plant control system

    International Nuclear Information System (INIS)

    A plant control system is being designed for a gas-cooled fast breeder reactor (GCFR) demonstration plant. Control analysis is being performed as an integral part of the plant design process to ensure that control requirements are satisfied as the plant design evolves. The load control portion of the plant control system provides stable automatic (closed-loop) control of the plant over the 25% to 100% load range. Simulation results are presented to demonstrate load control system performance. The results show that the plant is controllable at full load with the control system structure selected, but gain scheduling is required to achieve desired performance over the load range

  13. Monju plant dynamics analysis

    International Nuclear Information System (INIS)

    The heat transport systems of MONJU are three main heat transport loops, each loop consist of the primary, the secondary loop and the water-steam system, in addition, the auxiliary cooling system. These systems are under the influence one another on plant transient. So it is important to evaluate the flow and heat characteristics of the heat transport systems on calculating plant transient. We made the plant dynamic analysis codes of MONJU to calculate the plant transient analysis and evaluate the plant characteristics by the disturbance on the on-power operation and the performance of the plant control systems. In this paper, one of the main plant dynamic simulation code of MONJU, the calculation conditions on analysis, the plant safety analysis, the plant stability analysis and the plant thermal transient analysis are discribed. (author)

  14. PLANT BIOPRINTING: NOVEL PERSPECTIVE FOR PLANT BIOTECHNOLOGY

    Directory of Open Access Journals (Sweden)

    Adhityo WICAKSONO

    2015-12-01

    Full Text Available Bioprinting is a technical innovation that has revolutionized tissue engineering. Using conventional printer cartridges filled with cells as well as a suitable scaffold, major advances have been made in the biomedical field, and it is now possible to print skin, bones, blood vessels, and even organs. Unlike animal systems, the application of bioprinting in simple plant tissue cells is still in a nascent phase and has yet to be studied. One major advantage of plants is that all living parts are reprogrammable in the form of totipotent cells. Plant bioprinting may improve scientists’understanding of plant shape and morphogenesis, and could serve for the mass production of desired tissues or plants, or even the production of plant-based biomaterial for industrial uses. This perspectives paper explores these possibilities using knowledge on what is known about bioprinting in other biosystems.

  15. Plutonium in plants

    International Nuclear Information System (INIS)

    A bibliography on plutonium in plants is presented. It covers the subjects occurrence of plutonium in plants; soil-plant relationships; root uptake; distribution and translocation; foliar deposition and loss. Compiled data are presented on: recorded and calculated concentration factors of plutonium as well as those for uranium; concentration ratios for several crop types; proportion of plutonium removed from soil by plants; concentration ratios according to plant parts of cereal and vegetable crops. (G.J.P.)

  16. Plant Research '75

    Energy Technology Data Exchange (ETDEWEB)

    1975-01-01

    Research is reported on stomatal regulation of the gas exchanges between plant and environment; inhibitory effects in flower formation; plant growth and development through hormones; hormone action; development and nitrogen fixation in algae; primary cell wall glycoprotein ectensin; enzymic mechanisms and control of polysaccharide and glycoprotein synthesis; molecular studies of membrane studies; sensory transduction in plants; regulation of formation of protein complexes and enzymes in higher plant cell and mechanism of sulfur dioxide toxicity in plants. (PCS)

  17. Chapter 22. Serious accidents in the A1 nuclear power plant

    International Nuclear Information System (INIS)

    In this chapter two serious reactor accidents in the A1 nuclear power plant in Jaslovske Bohunice (Slovak Republic) are described. The first accident - during replacement of the fuel assembly the fuel element went off from the reactor on January 1976. Residual power of reactor at the time of the fuel assembly outspreaded from the channel H05 (January 5, 1976, 11:55 hours) was determined at 0.63% of the nominal power of the reactor where he worked before shutdown, i. e. residual power of the reactor was about 2.9 MWt. Leakage of carbon dioxide was stopped by loading machine. Maximum temperature 565 grad C was registered by measurement of uranium temperature. As it appeared later, overheating damaged the cover of several fuel assemblies in the central zone and the inner peripheral border zone. During the accident power radiation situation grew worse in most areas of plant. Released radioactive gases caused the maximum effective dose 10-8 Sv per capita in the territory to a distance of 25 km from the plant. At that time permitted individual dose per individual of the population was 5 mSv/year. The consequences of the accident on technological equipment are analyzed. Dealing with the aftermath of the accident on the technological equipment is described. Planned replacement of spent nuclear fuel in a reactor in the technology channel C05 started on 22 February 1977 in the afternoon. The exchange was taking place in the reactor operation. The electrical power was 93 MW during refuelling. Exchange by filling machine took place normally. Launching of the fuel assembly from cool zone into the reactor core came after. In this operation, which began at about 18:13 pm fuel assembly was overheated. Consequently, the influence of high temperature induced its destruction, which caused damage of 'decompression' heavy water tube container. Big leaking was formed and heavy water began to penetrate into the gas of the primary circuit. The operator immediately stopped the reactor

  18. Pathogen Phytosensing: Plants to Report Plant Pathogens

    Directory of Open Access Journals (Sweden)

    C. Neal Stewart

    2008-04-01

    Full Text Available Real-time systems that provide evidence of pathogen contamination in crops can be an important new line of early defense in agricultural centers. Plants possess defense mechanisms to protect against pathogen attack. Inducible plant defense is controlled by signal transduction pathways, inducible promoters and cis-regulatory elements corresponding to key genes involved in defense, and pathogen-specific responses. Identified inducible promoters and cis-acting elements could be utilized in plant sentinels, or ‘phytosensors’, by fusing these to reporter genes to produce plants with altered phenotypes in response to the presence of pathogens. Here, we have employed cis-acting elements from promoter regions of pathogen inducible genes as well as those responsive to the plant defense signal molecules salicylic acid, jasmonic acid, and ethylene. Synthetic promoters were constructed by combining various regulatory elements supplemented with the enhancer elements from the Cauliflower mosaic virus (CaMV 35S promoter to increase basal level of the GUS expression. The inducibility of each synthetic promoter was first assessed in transient expression assays using Arabidopsis thaliana protoplasts and then examined for efficacy in stably transgenic Arabidopsis and tobacco plants. Histochemical and fluorometric GUS expression analyses showed that both transgenic Arabidopsis and tobacco plants responded to elicitor and phytohormone treatments with increased GUS expression when compared to untreated plants. Pathogen-inducible phytosensor studies were initiated by analyzing the sensitivity of the synthetic promoters against virus infection. Transgenic tobacco plants infected with Alfalfa mosaic virus showed an increase in GUS expression when compared to mock-inoculated control plants, whereas Tobacco mosaic virus infection caused no changes in GUS expression. Further research, using these transgenic plants against a range of different

  19. Electricity and heat production

    International Nuclear Information System (INIS)

    Bohunice NPPs fulfilled planned power supply to 103.4% in 1997 having supplied 9,968,758 MWh to the national power grid. Bohunice NPPs power generation reached 10,796,904 MWh which represented 51% share of Slovak power stations plc power generation and 44% of national power generation. Total Bohunice NPPs production represented 178,715,793 MWh of power since the start-up of their WWER 440 units. Together with the A-1 plant it represented 180,180,372 MWh in total since the Bohunice site had been commissioned. Heat supply for heating purposes to the town of Trnava was reliable and met customer's requirements representing the amount of 1,003,500 GJ of heat, which was by 221,173 GJ less than in 1996. The heat supply to Trnava decreased due to the heat line from 13 May to 3 October 1997, due to starting the heat line to the towns of Hlohovec and Leopoldov up, and due to warmer weather during the heating season. The heat supply to Trnava represented 8,787,323 GJ since the Bohunice-Trnava heat line had been started up (December 1997). The Heat Transmission Plant Jaslovske Bohunice caught 65,687 GJ of heat last year which represented 310,982 GJ since its start-up (November 1992). Total heat supply from nuclear sources for heating purposes was 1,691,052 GJ in 1997, which represented 16,495,333 GJ since the Transmission Plant had been started up. Performance indicators from the beginning of operation to the end of 1997 and performance indicators in 1997 as well as operation history of Bohunice 1 - 4 reactor are presented

  20. Plant Phenotype Characterization System

    Energy Technology Data Exchange (ETDEWEB)

    Daniel W McDonald; Ronald B Michaels

    2005-09-09

    This report is the final scientific report for the DOE Inventions and Innovations Project: Plant Phenotype Characterization System, DE-FG36-04GO14334. The period of performance was September 30, 2004 through July 15, 2005. The project objective is to demonstrate the viability of a new scientific instrument concept for the study of plant root systems. The root systems of plants are thought to be important in plant yield and thus important to DOE goals in renewable energy sources. The scientific study and understanding of plant root systems is hampered by the difficulty in observing root activity and the inadequacy of existing root study instrumentation options. We have demonstrated a high throughput, non-invasive, high resolution technique for visualizing plant root systems in-situ. Our approach is based upon low-energy x-ray radiography and the use of containers and substrates (artificial soil) which are virtually transparent to x-rays. The system allows us to germinate and grow plant specimens in our containers and substrates and to generate x-ray images of the developing root system over time. The same plant can be imaged at different times in its development. The system can be used for root studies in plant physiology, plant morphology, plant breeding, plant functional genomics and plant genotype screening.

  1. Plant tissue culture techniques

    OpenAIRE

    Rolf Dieter Illg

    1991-01-01

    Plant cell and tissue culture in a simple fashion refers to techniques which utilize either single plant cells, groups of unorganized cells (callus) or organized tissues or organs put in culture, under controlled sterile conditions.

  2. Plant centromere compositions

    Energy Technology Data Exchange (ETDEWEB)

    Mach; Jennifer M. (Chicago, IL), Zieler; Helge (Del Mar, CA), Jin; RongGuan (Chesterfield, MO), Keith; Kevin (Three Forks, MT), Copenhaver; Gregory P. (Chapel Hill, NC), Preuss; Daphne (Chicago, IL)

    2011-11-22

    The present invention provides for the nucleic acid sequences of plant centromeres. This will permit construction of stably inherited recombinant DNA constructs and minichromosomes which can serve as vectors for the construction of transgenic plant and animal cells.

  3. Plant centromere compositions

    Energy Technology Data Exchange (ETDEWEB)

    Mach, Jennifer (Chicago, IL); Zieler, Helge (Chicago, IL); Jin, James (Chicago, IL); Keith, Kevin (Chicago, IL); Copenhaver, Gregory (Chapel Hill, NC); Preuss, Daphne (Chicago, IL)

    2007-06-05

    The present invention provides for the nucleic acid sequences of plant centromeres. This will permit construction of stably inherited recombinant DNA constructs and minichromosomes which can serve as vectors for the construction of transgenic plant and animal cells.

  4. Plant centromere compositions

    Energy Technology Data Exchange (ETDEWEB)

    Mach, Jennifer M. (Chicago, IL); Zieler, Helge (Del Mar, CA); Jin, RongGuan (Chesterfield, MO); Keith, Kevin (Three Forks, MT); Copenhaver, Gregory P. (Chapel Hill, NC); Preuss, Daphne (Chicago, IL)

    2011-08-02

    The present invention provides for the nucleic acid sequences of plant centromeres. This will permit construction of stably inherited recombinant DNA constructs and minichromosomes which can serve as vectors for the construction of transgenic plant and animal cells.

  5. Plant tissue culture techniques

    Directory of Open Access Journals (Sweden)

    Rolf Dieter Illg

    1991-01-01

    Full Text Available Plant cell and tissue culture in a simple fashion refers to techniques which utilize either single plant cells, groups of unorganized cells (callus or organized tissues or organs put in culture, under controlled sterile conditions.

  6. Kansas Power Plants

    Data.gov (United States)

    Kansas Data Access and Support Center — The Kansas Power Plants database depicts, as point features, the locations of the various types of power plant locations in Kansas. The locations of the power...

  7. Glutamate Receptors in Plants

    OpenAIRE

    Davenport, Romola

    2002-01-01

    Ionotropic glutamate receptors function in animals as glutamate‐gated non‐selective cation channels. Numerous glutamate receptor‐like (GLR) genes have been identified in plant genomes, and plant GLRs are predicted, on the basis of sequence homology, to retain ligand‐binding and ion channel activity. Non‐selective cation channels are ubiquitous in plant membranes and may function in nutrient uptake, signalling and intra‐plant transport. However, there is little evidence for amino acid gating o...

  8. Plant cytokine or phytocytokine

    OpenAIRE

    Luo, Li

    2012-01-01

    Peptide hormones play an important role in plant growth and development. Some of them are secreted by stem cells and also regulate plant immunity through cell-cell communication and reprogramming the expression of immune related genes, such as CLAVATA3p (CLV3p) and phytosulfokine (PSK). These peptides play similar roles as cytokines in plant innate immunity. As explosive progress of plant omics, more and more such functional peptides will be discovered. I recommend that they should be named a...

  9. Plant ozone injury symptoms

    Energy Technology Data Exchange (ETDEWEB)

    Nouchi, I.; Odaira, T.; Sawada, T.; Oguchi, K.; Komeiji, T.

    1973-01-01

    A study of the phytotoxicity of ozone to plants was conducted in controlled-atmosphere greenhouses to determine if the symptoms of such exposure would be similar to symptoms exhibited by plants exposed to photochemical smog (which contains ozone) in the Tokyo area. Test plants used were herbaceous plants and woody plants, which were fumigated to 20 pphm ozone. Plants used as controls for the oxone exposure experiments were placed in a carbon filtered greenhouse. Herbaceous plants were generally sensitive to injury, especially Brassica rapa, Brassica pekinensis and others were extremely responsive species. In comparison with herbaceous plants, woody plants were rather resistant except for poplar. Depending on plant species and severity of injury, ozone-injury symptoms of herbaceous plants were bleaching, chlorosis, necrosis, and red-dish-brown flecks. Leaves of woody plants developed discrete, punctate spots, reddish-brown pigment on the upper surfaces and lastly defoliation. Ozone injury was typically confined to the upper leaf surfaces and notably greater mature leaves. Microscopic examination showed that pallisade cells were much more prone to ozone injury than other tissues.

  10. Designing with plants

    NARCIS (Netherlands)

    Smits, R.

    2012-01-01

    This "designers' manual" is made during the TIDO-course AR0531 Smart & Bioclimatic Design. Rainforests are the lungs of the earth and plants can be the lungs of a buildings. Every plant uses CO2, water and light to produce sugars and oxygen; furthermore plants provide shade, take pollutants from th

  11. Wind power plants

    Energy Technology Data Exchange (ETDEWEB)

    Stiller, W.

    1980-01-01

    Wind power plants have practically faded into oblivion in Germany. These wind power plants are systems converting wind power into other usable energy forms, mainly into electric current. The irregularity of wind currents requires storage of the energy produced. The cost situation is calculated for a small wind power plant.

  12. Plant Systems Biology (editorial)

    Science.gov (United States)

    In June 2003, Plant Physiology published an Arabidopsis special issue devoted to plant systems biology. The intention of Natasha Raikhel and Gloria Coruzzi, the two editors of this first-of-its-kind issue, was ‘‘to help nucleate this new effort within the plant community’’ as they considered that ‘‘...

  13. Power Plant Cycling Costs

    Energy Technology Data Exchange (ETDEWEB)

    Kumar, N.; Besuner, P.; Lefton, S.; Agan, D.; Hilleman, D.

    2012-07-01

    This report provides a detailed review of the most up to date data available on power plant cycling costs. The primary objective of this report is to increase awareness of power plant cycling cost, the use of these costs in renewable integration studies and to stimulate debate between policymakers, system dispatchers, plant personnel and power utilities.

  14. Advanced Plant Habitat (APH)

    Science.gov (United States)

    Richards, Stephanie E. (Compiler); Levine, Howard G.; Reed, David W.

    2016-01-01

    The Advanced Plant Habitat (APH) hardware will be a large growth volume plant habitat, capable of hosting multigenerational studies, in which environmental variables (e.g., temperature, relative humidity, carbon dioxide level light intensity and spectral quality) can be tracked and controlled in support of whole plant physiological testing and Bio-regenerative Life Support System investigations.

  15. Small hydroelectric power plants

    International Nuclear Information System (INIS)

    Small hydroelectric power plants are power plants of 1 - 10 MW. For a supplier, this is an unnatural limit. A more natural limit involves compact engine design and simplified control system. The article discusses most of the engine and electrotechnical aspects in the development, construction and operation of such a plant

  16. Bohunician technology and thermoluminescence dating of the type locality of Brno-Bohunice (Czech Republic)

    Czech Academy of Sciences Publication Activity Database

    Richter, D.; Tostevin, G.; Škrdla, Petr

    2008-01-01

    Roč. 55, - (2008), s. 871-885. ISSN 0047-2484 R&D Projects: GA AV ČR IAA800010801 Institutional research plan: CEZ:AV0Z80010507 Keywords : Early Upper Paleolithic * Leaf points * Middle Danube * Central Europe Subject RIV: AC - Archeology, Anthropology, Ethnology Impact factor: 3.550, year: 2008

  17. Expansion of storage capacity of interim spent fuel storage (MSVP) Bohunice

    International Nuclear Information System (INIS)

    This article describes modifications of Interim spent fuel storage, performed with aim of storage capacity expansion, seismic stability enhancement, and overall increase of service life as well as assuring of MSVP safe operation. Uniqueness of adopted technical solutions is based upon the fact that mentioned innovations and modifications were performed without any changes, neither in ground plan nor architecture of MSVP structure. It also important to mention that all modifications were performed during continual operation of MSVP without any breaks of limits or operational regulations. Reconstruction and innovation of existing construction and technological systems of MSVP has assured required quality standard comparable with actual trends. (authors)

  18. Managerial competencies of head and department nurses in facultative hospital Brno Bohunice

    OpenAIRE

    Tomáš Kotrba

    2009-01-01

    Head and department nurses were the target groups of this research in the Faculty Hospital, Brno. This paper deals with their managerial competencies. 846 respondents participated in a questionnaire research covering 724 nurses, 99 department nurses and 23 head nurses. This research shows that informal relationships predominate in the Hospital and it is based on the democratic managerial style of department and head nurses. Nurses in management positions are quite satisfied with their manager...

  19. Slovak Electric, plc

    International Nuclear Information System (INIS)

    In this book the structure and activities of the Slovenske Elektrarne, a.s. (Slovak Electric, plc.) are presented. The parameters of the Bohunice NPPs as well as Mochovce NPP are described in detail. Other power plant (coal fired power plants and hydroelectric power plants as well as power transmission and distribution systems in the Slovak Republic are described too. Treatment of radioactive wastes are performed in the the Bohunice Radwaste Treatment Centre (BSC RAO) and radioactive waste are storages in Mochovce National Radioactive Waste Repository for the Slovak Republic

  20. Hydroelectric Power Plants Dobsina

    International Nuclear Information System (INIS)

    In this brochure the Hydroelectric Power Plants Dobsina, (VED), subsidiary of the utility Slovenske Elektrarne, a.s. (Slovak Electric, plc. Bratislava) are presented. VED is mainly aimed at generating peak-load electrical energy and maintenance of operational equipment. Reaching its goals, company is first of all focused on reliability of production, economy and effectiveness, keeping principles of work safety and industry safety standards and also ecology. VED operates eight hydroelectric power plants, from which PVE Ruzin I and PVE Dobsina I are pump storage ones and they are controlled directly by the Slovak Energy Dispatch Centre located in Zilina thought the system LS 3200. Those power plants participate in secondary regulation of electrical network of Slovakia. They are used to compensate balance in reference to foreign electrical networks and they are put into operation independently from VED. Activity of the branch is focused mainly on support of fulfilment of such an important aim as electric network regulation. Beginnings of the subsidiary Hydroelectric Power Plants Dobsina are related to the year of 1948. After commissioning of the pump storage Hydroelectric Power Plants Dobsina in 1953, the plant started to carry out its mission. Since that time the subsidiary has been enlarged by other seven power plants, through which it is fulfilling its missions nowadays. The characteristics of these hydroelectric power plants (The pump-storage power plant Dobsina, Small hydroelectric power plant Dobsina II, Small hydroelectric power plant Rakovec, Small hydroelectric power plant Svedlar, Hydroelectric power plant Domasa, The pump-storage power plant Ruzin, and Small hydroelectric power plant Krompachy) are described in detail. Employees welfare and public relations are presented

  1. The plant pathology of native plant restoration

    Science.gov (United States)

    Restoration of ecologically degraded sites will benefit from the convergence of knowledge drawn from such disparate and often compartmentalized (and heretofore not widely considered) areas of research as soil microbial ecology, plant pathology and agronomy. Restoration following biological control w...

  2. Plant perceptions of plant growth-promoting Pseudomonas.

    OpenAIRE

    Preston, Gail M.

    2004-01-01

    Plant-associated Pseudomonas live as saprophytes and parasites on plant surfaces and inside plant tissues. Many plant-associated Pseudomonas promote plant growth by suppressing pathogenic micro-organisms, synthesizing growth-stimulating plant hormones and promoting increased plant disease resistance. Others inhibit plant growth and cause disease symptoms ranging from rot and necrosis through to developmental dystrophies such as galls. It is not easy to draw a clear distinction between pathoge...

  3. Merchant Plant activity

    Energy Technology Data Exchange (ETDEWEB)

    Hepple, R.T. [Calpine Corp., San Jose, CA (United States)

    1998-07-01

    The changes facing the electric power industry in the 1990s have created opportunities to build new power plants. These plants are called Merchant Plants because they will not benefit from long-term power purchase agreements as in the past. Currently in Canada and the United States, about 45 per cent of the generating capacity is provided by plants that are more than 25 years old. These plants have high heat rates (i.e. the cost of generating one kWh of electricity is high) and are a major source of pollution. Nuclear power, which held much promise 30 years ago, has been rejected on both sides of the border, and coal-fired power plants are facing their own set of challenges. Modern natural gas-fired combined-cycle power plants appear to be a feasible, less polluting way to generate electricity. The per kilowatt cost of building a modern combined-cycle power plant averages about $500/kw which is far below the cost of coal or nuclear plants. Costing and siting new merchant plants, configuring a plant in such a way as to achieve the lowest-cost power generation were some of the topics that were highlighted.

  4. Merchant Plant activity

    International Nuclear Information System (INIS)

    The changes facing the electric power industry in the 1990s have created opportunities to build new power plants. These plants are called Merchant Plants because they will not benefit from long-term power purchase agreements as in the past. Currently in Canada and the United States, about 45 per cent of the generating capacity is provided by plants that are more than 25 years old. These plants have high heat rates (i.e. the cost of generating one kWh of electricity is high) and are a major source of pollution. Nuclear power, which held much promise 30 years ago, has been rejected on both sides of the border, and coal-fired power plants are facing their own set of challenges. Modern natural gas-fired combined-cycle power plants appear to be a feasible, less polluting way to generate electricity. The per kilowatt cost of building a modern combined-cycle power plant averages about $500/kw which is far below the cost of coal or nuclear plants. Costing and siting new merchant plants, configuring a plant in such a way as to achieve the lowest-cost power generation were some of the topics that were highlighted

  5. Plant Physiology and Development

    DEFF Research Database (Denmark)

    Taiz, Lincoln; Zeiger, Eduardo; Møller, Ian Max;

    widely used upper-division plant biology textbook. In the Sixth Edition, the Growth and Development section (Unit III) has been reorganized and expanded to present the complete life cycle of seed plants from germination to senescence. In recognition of this enhancement, the text has been renamed Plant......Throughout its twenty-two year history, the authors of Plant Physiology have continually updated the book to incorporate the latest advances in plant biology and implement pedagogical improvements requested by adopters. This has made Plant Physiology the most authoritative, comprehensive, and...... Physiology and Development. As before, Unit III begins with updated chapters on Cell Walls and Signals and Signal Transduction. The latter chapter has been expanded to include a discussion of major signaling molecules, such as calcium ions and plant hormones. A new, unified chapter entitled Signals from...

  6. Multinationals and plant survival

    DEFF Research Database (Denmark)

    Bandick, Roger

    2010-01-01

    The aim of this paper is twofold: first, to investigate how different ownership structures affect plant survival, and second, to analyze how the presence of foreign multinational enterprises (MNEs) affects domestic plants’ survival. Using a unique and detailed data set on the Swedish manufacturing...... sector, I am able to separate plants into those owned by foreign MNEs, domestic MNEs, exporting non-MNEs, and purely domestic firms. In line with previous findings, the result, when conditioned on other factors affecting survival, shows that foreign MNE plants have lower survival rates than non......-MNE plants. However, separating the non-MNEs into exporters and non-exporters, the result shows that foreign MNE plants have higher survival rates than non-exporting non-MNEs, while the survival rates of foreign MNE plants and exporting non-MNE plants do not seem to differ. Moreover, the simple non...

  7. Chapter No.3. Assessment and inspection of nuclear installations

    International Nuclear Information System (INIS)

    The assessment activity of UJD in relation to nuclear installation lies in assessment of safety documentation for constructions realised as nuclear installations, or construction through which changes on nuclear installations are realised. The assessment activity of UJD in 2001 was focused on National Repository of Radwaste in Mochovce, on Radwaste conditioning and treatment technology in Jaslovske Bohunice and on the assessment of documentation for the project of modernisation of Bohunice V-2 NPPs which is under preparation. The assessment of the technical condition of equipment, important in terms of nuclear safety, primarily based on results of in-service inspections and surveillance testing of safety related components and systems, is also a part of the safety assessment of nuclear installation operation. The inspectors take part in training courses and participate in other technical meetings and workshops organised by the IAEA and also take part in special training courses organised by the Nuclear Authorities of European countries, USA and Japan. Bohunice V-1 NPP is equipped with two reactors of WWER 440 type V-230 and was put into operation in 1978-1980 as one of the last nuclear power plants with this type of reactor. Both units of NPP V-1 Bohunice operated in 2001 according to the requirements of energy dispatching at nominal power, or in a regime of tertiary regulation. November 2000, a mission of experts invited by UJD and delegated by IAEA took place at the Bohunice NPPs. The mission members together with experts of the plant operator assessed the safety of the units of WWER-440/V-230 of Bohunice V-1 NPP after the reconstruction. The members of the mission prepared the report on the current status of safety of these units for the IAEA. In 2001, UJD by its decision, issued the approval for further operation of both reactor units of Bohunice V-1 NPP. In sense of the relevant decree on operational events, 20 events have been recorded, at Bohunice V-1 NPP in

  8. Safe genetically engineered plants

    International Nuclear Information System (INIS)

    The application of genetic engineering to plants has provided genetically modified plants (GMPs, or transgenic plants) that are cultivated worldwide on increasing areas. The most widespread GMPs are herbicide-resistant soybean and canola and insect-resistant corn and cotton. New GMPs that produce vaccines, pharmaceutical or industrial proteins, and fortified food are approaching the market. The techniques employed to introduce foreign genes into plants allow a quite good degree of predictability of the results, and their genome is minimally modified. However, some aspects of GMPs have raised concern: (a) control of the insertion site of the introduced DNA sequences into the plant genome and of its mutagenic effect; (b) presence of selectable marker genes conferring resistance to an antibiotic or an herbicide, linked to the useful gene; (c) insertion of undesired bacterial plasmid sequences; and (d) gene flow from transgenic plants to non-transgenic crops or wild plants. In response to public concerns, genetic engineering techniques are continuously being improved. Techniques to direct foreign gene integration into chosen genomic sites, to avoid the use of selectable genes or to remove them from the cultivated plants, to reduce the transfer of undesired bacterial sequences, and make use of alternative, safer selectable genes, are all fields of active research. In our laboratory, some of these new techniques are applied to alfalfa, an important forage plant. These emerging methods for plant genetic engineering are briefly reviewed in this work

  9. Safe genetically engineered plants

    Energy Technology Data Exchange (ETDEWEB)

    Rosellini, D; Veronesi, F [Dipartimento di Biologia Vegetale e Biotecnologie Agroambientali e Zootecniche, Universita degli Studi di Perugia, Borgo XX giugno 74, 06121 Perugia (Italy)

    2007-10-03

    The application of genetic engineering to plants has provided genetically modified plants (GMPs, or transgenic plants) that are cultivated worldwide on increasing areas. The most widespread GMPs are herbicide-resistant soybean and canola and insect-resistant corn and cotton. New GMPs that produce vaccines, pharmaceutical or industrial proteins, and fortified food are approaching the market. The techniques employed to introduce foreign genes into plants allow a quite good degree of predictability of the results, and their genome is minimally modified. However, some aspects of GMPs have raised concern: (a) control of the insertion site of the introduced DNA sequences into the plant genome and of its mutagenic effect; (b) presence of selectable marker genes conferring resistance to an antibiotic or an herbicide, linked to the useful gene; (c) insertion of undesired bacterial plasmid sequences; and (d) gene flow from transgenic plants to non-transgenic crops or wild plants. In response to public concerns, genetic engineering techniques are continuously being improved. Techniques to direct foreign gene integration into chosen genomic sites, to avoid the use of selectable genes or to remove them from the cultivated plants, to reduce the transfer of undesired bacterial sequences, and make use of alternative, safer selectable genes, are all fields of active research. In our laboratory, some of these new techniques are applied to alfalfa, an important forage plant. These emerging methods for plant genetic engineering are briefly reviewed in this work.

  10. Safe genetically engineered plants

    Science.gov (United States)

    Rosellini, D.; Veronesi, F.

    2007-10-01

    The application of genetic engineering to plants has provided genetically modified plants (GMPs, or transgenic plants) that are cultivated worldwide on increasing areas. The most widespread GMPs are herbicide-resistant soybean and canola and insect-resistant corn and cotton. New GMPs that produce vaccines, pharmaceutical or industrial proteins, and fortified food are approaching the market. The techniques employed to introduce foreign genes into plants allow a quite good degree of predictability of the results, and their genome is minimally modified. However, some aspects of GMPs have raised concern: (a) control of the insertion site of the introduced DNA sequences into the plant genome and of its mutagenic effect; (b) presence of selectable marker genes conferring resistance to an antibiotic or an herbicide, linked to the useful gene; (c) insertion of undesired bacterial plasmid sequences; and (d) gene flow from transgenic plants to non-transgenic crops or wild plants. In response to public concerns, genetic engineering techniques are continuously being improved. Techniques to direct foreign gene integration into chosen genomic sites, to avoid the use of selectable genes or to remove them from the cultivated plants, to reduce the transfer of undesired bacterial sequences, and make use of alternative, safer selectable genes, are all fields of active research. In our laboratory, some of these new techniques are applied to alfalfa, an important forage plant. These emerging methods for plant genetic engineering are briefly reviewed in this work.

  11. Annual Plant Reviews

    DEFF Research Database (Denmark)

    , three dimensional structures and functions of each protein in a biological system. In plant science, the number of proteome studies is rapidly expanding after the completion of the Arabidopsis thaliana genome sequence, and proteome analyses of other important or emerging model systems and crop plants...... are in progress or are being initiated. Proteome analysis in plants is subject to the same obstacles and limitations as in other organisms, but the nature of plant tissues, with their rigid cell walls and complex variety of secondary metabolites, means that extra challenges are involved that may not...... be faced when analysing other organisms. This volume aims to highlight the ways in which proteome analysis has been used to probe the complexities of plant biochemistry and physiology. It is aimed at researchers in plant biochemistry, genomics, transcriptomics and metabolomics who wish to gain an up...

  12. Conditional sterility in plants

    Science.gov (United States)

    Meagher, Richard B.; McKinney, Elizabeth; Kim, Tehryung

    2010-02-23

    The present disclosure provides methods, recombinant DNA molecules, recombinant host cells containing the DNA molecules, and transgenic plant cells, plant tissue and plants which contain and express at least one antisense or interference RNA specific for a thiamine biosynthetic coding sequence or a thiamine binding protein or a thiamine-degrading protein, wherein the RNA or thiamine binding protein is expressed under the regulatory control of a transcription regulatory sequence which directs expression in male and/or female reproductive tissue. These transgenic plants are conditionally sterile; i.e., they are fertile only in the presence of exogenous thiamine. Such plants are especially appropriate for use in the seed industry or in the environment, for example, for use in revegetation of contaminated soils or phytoremediation, especially when those transgenic plants also contain and express one or more chimeric genes which confer resistance to contaminants.

  13. Flooding and Plant Growth

    OpenAIRE

    Visser, E.J.W.; Voesenek, L.A.C.J.; VARTAPETIAN, B. B.; Jackson, M B

    2003-01-01

    This Special Issue is based on the 7th Conference of the International Society for Plant Anaerobiosis (ISPA), held in Nijmegen, The Netherlands, 12–16 June 2001. The papers describe and analyse many of the responses that plants display when subjected to waterlogging of the soil or deeper submergence. These responses may be injurious or adaptive, and are discussed at various levels of organizational complexity ranging from ecosystem processes, through individual plants to single cells. The res...

  14. Design of chemical plant

    International Nuclear Information System (INIS)

    This book describes design of chemical plant, which includes chemical engineer and plan for chemical plant, development of chemical process, cost engineering pattern, design and process development, general plant construction plan, project engineering, foundation for economy on assets and depreciation, estimation for cost on capital investment and manufacturing cost, design with computers optimal design and method like fluid mechanics design chemical device and estimation for cost, such as dispatch of material and device writing on design report and appendixes.

  15. Plant intelligence and attention

    OpenAIRE

    Marder, Michael

    2013-01-01

    This article applies the phenomenological model of attention to plant monitoring of environmental stimuli and signal perception. Three complementary definitions of attention as selectivity, modulation and perdurance are explained with reference to plant signaling and behaviors, including foraging, ramet placement and abiotic stress communication. Elements of animal and human attentive attitudes are compared with plant attention at the levels of cognitive focus, context and margin. It is argue...

  16. Recombinant Cytokines from Plants

    OpenAIRE

    Patrycja Redkiewicz; Anna Góra-Sochacka; Tomas Vaněk; Agnieszka Sirko

    2011-01-01

    Plant-based platforms have been successfully applied for the last two decades for the efficient production of pharmaceutical proteins. The number of commercialized products biomanufactured in plants is, however, rather discouraging. Cytokines are small glycosylated polypeptides used in the treatment of cancer, immune disorders and various other related diseases. Because the clinical use of cytokines is limited by high production costs they are good candidates for plant-made pharmaceuticals. S...

  17. MBS Native Plant Communities

    Data.gov (United States)

    Minnesota Department of Natural Resources — This data layer contains results of the Minnesota County Biological Survey (MCBS). It includes polygons representing the highest quality native plant communities...

  18. Plant monitoring device

    International Nuclear Information System (INIS)

    The device of the present invention gives optimum information to operators with simple procedures in accordance with aspects and the states of operation in a nuclear power plant or a chemical plant. That is, pattern matching, etc. are deduced by a plant status judging device based on on-line data for process amount collected by a process input/output device and previously contained status judging intelligence data. Then, the plant status is judged to determine a priority and the states of the plant are collected and integrated in the order of important information of higher superiority. Further, the on-line data described above are arranged and edited by a display driving information providing device based on the result of the judgment in the plant status judging device. The plant information judged to have a high priority and to be important in the plant status judging device is displayed on a display device. With such procedures, complicated and various monitorings and operations of the process plant can be conducted without requiring skills. (I.S.)

  19. The Kuroshio power plant

    CERN Document Server

    Chen, Falin

    2013-01-01

    By outlining a new design or the Kuroshio power plant, new approaches to turbine design, anchorage system planning, deep sea marine engineering and power plant operations and maintenance are explored and suggested. The impact on the local environment, particularly in the face of natural disasters, is also considered to provide a well rounded introduction to plan and build a 30MW pilot power plant. Following a literature review, the six chapters of this book propose a conceptual design by focusing on the plant's core technologies and establish the separate analysis logics for turbine design and

  20. Plant Productivity and ESM

    Science.gov (United States)

    Rygalov, V.; Drysdale, A.; Bartsev, S.; Wheeler, R.; Fowler, P.

    An approach for relating Plant Productivity (PP) and Equivalent System Mass (ESM) has been formulated. On this basis, possible reductions of ESM have been analyzed in relation to:-the general mission scenario;-the physiology and cultivation of mixed plant crops;-natural and modified environmental conditions for plant cultivation;-benefits of management approaches;-degree of closure of the artificial support system;-improved plant chamber design. This approach is applied to estimates of minimal ESM for Martian Deployable Greenhouse (MDG).

  1. Modeling plant morphogenesis.

    Science.gov (United States)

    Prusinkiewicz, Przemyslaw; Rolland-Lagan, Anne-Gaëlle

    2006-02-01

    Applications of computational techniques to developmental plant biology include the processing of experimental data and the construction of simulation models. Substantial progress has been made in these areas over the past few years. Complex image-processing techniques are used to integrate sequences of two-dimensional images into three-dimensional descriptions of development over time and to extract useful quantitative traits. Large amounts of data are integrated into empirical models of developing plant organs and entire plants. Mechanistic models link molecular-level phenomena with the resulting phenotypes. Several models shed light on the possible properties of active auxin transport and its role in plant morphogenesis. PMID:16376602

  2. Nuclear power plant simulator

    International Nuclear Information System (INIS)

    In this paper, real time nuclear power plant simulator for student education is described. The simulator is composed of a hybrid computer and an operating console. Simulated power plant is a 36 MWt PWR plant, and the average temperature of the primary coolant within the reactor is controlled to be constant. Reactor Kinetics, fuel temperature, primary coolant temperature, temperature and pressure of steam within the steam generator, steam flow, control rod driving system, and feed water controlling system are simulated. The use of the hybrid computer made it possible to simulate a relatively large scale power plant with a comparatively small size computing system. (auth.)

  3. Plant Habitat (PH)

    Science.gov (United States)

    Onate, Bryan

    2016-01-01

    The International Space Station (ISS) will soon have a platform for conducting fundamental research of Large Plants. Plant Habitat (PH) is designed to be a fully controllable environment for high-quality plant physiological research. PH will control light quality, level, and timing, temperature, CO2, relative humidity, and irrigation, while scrubbing ethylene. Additional capabilities include leaf temperature and root zone moisture and oxygen sensing. The light cap will have red (630 nm), blue (450 nm), green (525 nm), far red (730 nm) and broad spectrum white LEDs. There will be several internal cameras (visible and IR) to monitor and record plant growth and operations.

  4. Plant biotic interactions

    Institute of Scientific and Technical Information of China (English)

    2016-01-01

    occurring after infestation by olive fly larvae. The last research article by Niu et al.(2016) describes a growth-promoting rhizobacterium that primes induced systemic resistance by suppressing a host R gene-targeting micro RNA pairs and activating host immune responses. This finding further supports the important roles of plant endogenous small RNAs in plant-pathogen interactions. Hailing Jin, Professor Special Issue Editor UC President’s Chair Director of Genetics, Genomics and Bioinformatics Graduate Program, Center for Plant Cell Biology, Institute for Integrative Genome Biology, University of California, Riverside, USA doi:10.1111/jipb.12476 ©2016 Institute of Botany, Chinese Academy of Sciences REFERENCES Alagna F, Kal enbach M, Pompa A, De Marchis F, Rao R, Baldwin IT, Bonaventure G, Baldoni L (2016) Olive fruits infested with olive fly larvae respond with an ethylene burst and the emission of specific volatiles. J Integr Plant Biol 58:413–425 Castiblanco LF, Sundin GW (2016) New insights on molecular regulation of biofilm formation in plant-associated bacteria. J Integr Plant Biol 58:362–372 da GraSca JV, Douhan GW, Halbert SE, Keremane ML, Lee RF, Vidalakis G, Zhao H (2016) Huanglongbing: An overview of a complex pathosystem ravaging the world’s citrus. J Integr Plant Biol 58:373–387 Giovino A, Martinel i F, Saia S (2016) Rhynchophorus ferrugineus attack affects a group of compounds rather than rearranging Phoenix canariensis metabolic pathways. J Integr Plant Biol 58:388–396 Huang J, Yang M, Zhang X (2016) The function of smal RNAs in plant biotic stress response. J Integr Plant Biol 58:312–327 Kaloshian I, Wal ing LL (2016) Hemipteran and dipteran pests: Effectors and plant host immune regulators. J Integr Plant Biol 58:350–361 Mermigka G, Verret F, Kalantidis K (2016) RNA silencing movement in plants. J Integr Plant Biol 58:328–342 Niu D, Xia J, Jiang C, Qi B, Ling X, Lin S, Zhang W, Guo J, Jin H, Zhao H (2016) Bacil us cereus AR156

  5. Offshore atomic power plants

    International Nuclear Information System (INIS)

    Various merits of offshore atomic power plants are illustrated, and their systems are assessed. The planning of the offshore atomic power plants in USA is reviewed, and the construction costs of the offshore plant in Japan were estimated. Air pollution problem may be solved by the offshore atomic power plants remarkably. Deep water at low temperature may be advantageously used as cooling water for condensers. Marine resources may be bred by building artificial habitats and by providing spring-up equipments. In the case of floating plants, the plant design can be standardized so that the construction costs may be reduced. The offshore plants can be classified into three systems, namely artificial island system, floating system and sea bottom-based system. The island system may be realized with the present level of civil engineering, but requires the development of technology for the resistance of base against earthquake and its calculation means. The floating system may be constructed with conventional power plant engineering and shipbuilding engineering, but the aseismatic stability of breakwater may be a problem to be solved. Deep water floating system and deep water submerging system are conceivable, but its realization may be difficult. The sea bottom-based system with large caissons can be realized by the present civil engineering, but the construction of the caissons, stability against earthquake and resistance to waves may be problems to be solved. The technical prediction and assessment of new plant sites for nuclear power plants have been reported by Science and Technology Agency in 1974. The construction costs of an offshore plant has been estimated by the Ministry of International Trade and Industry to be yen71,026/kW as of 1985. (Iwakiri, K.)

  6. Environment report 2001

    International Nuclear Information System (INIS)

    Environmental impacts of activities carried out by the Slovak Electric, plc is presented. These impacts are reported under the following headings: (1) Statement of the Chairman of the Board of directors; (2) Environmental policies of Slovak Electric Joint Stock Company; (3) Atmospheric Protection; (4) Water management; (5) Waste management; (6) Environmental management system of SE, a. s.; (7) Financial of the protection of the environment; (8) NPP Bohunice, o. z., Jaslovske Bohunice; (9) NPP Mochovce, o. z., Mochovce; (10) Decommissioning of nuclear installations, BSC RAO, o. z., Jaslovske Bohunice; (11) Thermal Power Station Vojany, o. z., Vojany; (12) Thermal Power Station Novaky, o. z., Zemianske Kostolany; (13) Thermal Energetic Kosice, o. z., Kosice; (14) Hydroelectric Power Plants Trencin, o. z., Trencin; (15) Hydroelectric Power Plants Dobsina, o. z., Dobsina; (16) Transmissive System, o. z., Bratislava; (17) 3rd and 4th block of the NPP Mochovce, o. z., Mochovce

  7. Plants Bioassays: Comet Assay on Higher Plants

    Czech Academy of Sciences Publication Activity Database

    Mukherjee, A.; Gichner, Tomáš

    Houston: Studium Press, 2009 - (Sampietro, D.; Narwal, S.), s. 97-108 ISBN 1-933699-42-6 R&D Projects: GA ČR GA521/05/0500 Institutional research plan: CEZ:AV0Z50380511 Keywords : Comet assay * DNA damage * Plants Subject RIV: EB - Genetics ; Molecular Biology

  8. ROS and Phytohormones in Plant-Plant Allelopathic Interaction

    OpenAIRE

    Bogatek, Renata; Gniazdowska, Agnieszka

    2007-01-01

    Allelopathy refers to plant-plant interference mediated mostly by plant released products of secondary metabolism. It was recently suggested that allelochamicals may influence growth of neighboring plants by induction of oxidative stress. We have focused on the role of reactive oxygen species (ROS) and phytohormons (ABA and ethylene) in the biochemical and molecular regulation of plant response to sunflower phytotoxins.

  9. ROS and Phytohormones in Plant-Plant Allelopathic Interaction

    Science.gov (United States)

    Gniazdowska, Agnieszka

    2007-01-01

    Allelopathy refers to plant-plant interference mediated mostly by plant released products of secondary metabolism. It was recently suggested that allelochamicals may influence growth of neighboring plants by induction of oxidative stress. We have focused on the role of reactive oxygen species (ROS) and phytohormons (ABA and ethylene) in the biochemical and molecular regulation of plant response to sunflower phytotoxins. PMID:19704634

  10. Solar thermal power plants

    International Nuclear Information System (INIS)

    The solar thermal power plant technology, the opportunities it presents and the developments in the market are outlined. The focus is on the technology of parabolic trough power plants, a proven technology for solar power generation on a large scale. In a parabolic trough power plant, trough-shaped mirrors concentrate the solar irradiation onto a pipe in the focal line of the collector. The thermal energy thus generated is used for electricity generation in a steam turbine. Parabolic trough plants can be combined with thermal storage and fossil or biomass fired heat exchangers to generate electricity even when the sun is not shining. Solar Millennium AG in Erlangen has developed the first power plant of this kind in Europe. After two years of construction the plant started operation in Southern Spain in 2008. This one and its sister projects are important steps leading the way for the whole market. The paper also covers the technological challenges, the key components used and the research and development activities concerning this technology. Solar thermal power plants are ideal for covering peak and medium loads in power grids. In hybrid operation they can also cover base-load. The Solar Chimney power plant, another striking technology for the conversion of solar into electric energy, is described briefly. The paper concludes with a look at the future - the import of solar energy from the deserts of North Africa to central Europe. (author)

  11. Terrestrial plant methane production

    DEFF Research Database (Denmark)

    Mikkelsen, Teis Nørgaard; Bruhn, Dan; Møller, Ian M.; Ambus, Per

    We evaluate all experimental work published on the phenomenon of aerobic methane (CH4) generation in terrestrial plants. We conclude that the phenomenon is true. Four stimulating factors have been observed to induce aerobic plant CH4 production, i.e. cutting injuries, increasing temperature...

  12. Plant Gall Activity.

    Science.gov (United States)

    Kahn, Jacqueline Gage

    1997-01-01

    Describes a field trip to study, collect, and analyze galls in the field and classroom. Students hypothesize about factors that cause gall formation, develop a basic understanding of the complex and fragile interactions between plants and insects that result in the formation of plant galls, and determine the broader role of galls within the…

  13. Antimicrobial Peptides from Plants

    Science.gov (United States)

    Tam, James P.; Wang, Shujing; Wong, Ka H.; Tan, Wei Liang

    2015-01-01

    Plant antimicrobial peptides (AMPs) have evolved differently from AMPs from other life forms. They are generally rich in cysteine residues which form multiple disulfides. In turn, the disulfides cross-braced plant AMPs as cystine-rich peptides to confer them with extraordinary high chemical, thermal and proteolytic stability. The cystine-rich or commonly known as cysteine-rich peptides (CRPs) of plant AMPs are classified into families based on their sequence similarity, cysteine motifs that determine their distinctive disulfide bond patterns and tertiary structure fold. Cystine-rich plant AMP families include thionins, defensins, hevein-like peptides, knottin-type peptides (linear and cyclic), lipid transfer proteins, α-hairpinin and snakins family. In addition, there are AMPs which are rich in other amino acids. The ability of plant AMPs to organize into specific families with conserved structural folds that enable sequence variation of non-Cys residues encased in the same scaffold within a particular family to play multiple functions. Furthermore, the ability of plant AMPs to tolerate hypervariable sequences using a conserved scaffold provides diversity to recognize different targets by varying the sequence of the non-cysteine residues. These properties bode well for developing plant AMPs as potential therapeutics and for protection of crops through transgenic methods. This review provides an overview of the major families of plant AMPs, including their structures, functions, and putative mechanisms. PMID:26580629

  14. Antimicrobial Peptides from Plants

    Directory of Open Access Journals (Sweden)

    James P. Tam

    2015-11-01

    Full Text Available Plant antimicrobial peptides (AMPs have evolved differently from AMPs from other life forms. They are generally rich in cysteine residues which form multiple disulfides. In turn, the disulfides cross-braced plant AMPs as cystine-rich peptides to confer them with extraordinary high chemical, thermal and proteolytic stability. The cystine-rich or commonly known as cysteine-rich peptides (CRPs of plant AMPs are classified into families based on their sequence similarity, cysteine motifs that determine their distinctive disulfide bond patterns and tertiary structure fold. Cystine-rich plant AMP families include thionins, defensins, hevein-like peptides, knottin-type peptides (linear and cyclic, lipid transfer proteins, α-hairpinin and snakins family. In addition, there are AMPs which are rich in other amino acids. The ability of plant AMPs to organize into specific families with conserved structural folds that enable sequence variation of non-Cys residues encased in the same scaffold within a particular family to play multiple functions. Furthermore, the ability of plant AMPs to tolerate hypervariable sequences using a conserved scaffold provides diversity to recognize different targets by varying the sequence of the non-cysteine residues. These properties bode well for developing plant AMPs as potential therapeutics and for protection of crops through transgenic methods. This review provides an overview of the major families of plant AMPs, including their structures, functions, and putative mechanisms.

  15. Power plant chemical technology

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-12-01

    17 contributions covering topies of fossil fuel combustion, flue gas cleaning, power plant materials, corrosion, water/steam cycle chemistry, monitoring and control were presented at the annual meeting devoted to Power Plant Chemical Technology 1996 at Kolding (Denmark) 4-6 September 1996. (EG)

  16. MRI of intact plants

    NARCIS (Netherlands)

    As, van H.; Scheenen, T.; Vergeldt, F.J.

    2009-01-01

    Nuclear magnetic resonance imaging (MRI) is a non-destructive and non-invasive technique that can be used to acquire two- or even three-dimensional images of intact plants. The information within the images can be manipulated and used to study the dynamics of plant water relations and water transpor

  17. MRI of intact plants.

    NARCIS (Netherlands)

    As, H. van; Scheenen, T.W.J.; Vergeldt, F.J.

    2009-01-01

    Nuclear magnetic resonance imaging (MRI) is a non-destructive and non-invasive technique that can be used to acquire two- or even three-dimensional images of intact plants. The information within the images can be manipulated and used to study the dynamics of plant water relations and water transpor

  18. Plant vascular development

    NARCIS (Netherlands)

    Rybel, De Bert; Mähönen, Ari Pekka; Helariutta, Yrjö; Weijers, Dolf

    2016-01-01

    Vascular tissues in plants are crucial to provide physical support and to transport water, sugars and hormones and other small signalling molecules throughout the plant. Recent genetic and molecular studies have identified interconnections among some of the major signalling networks that regulate

  19. Nuclear Power Plants. Revised.

    Science.gov (United States)

    Lyerly, Ray L.; Mitchell, Walter, III

    This publication is one of a series of information booklets for the general public published by the United States Atomic Energy Commission. Among the topics discussed are: Why Use Nuclear Power?; From Atoms to Electricity; Reactor Types; Typical Plant Design Features; The Cost of Nuclear Power; Plants in the United States; Developments in Foreign…

  20. Better Plants Program Overview

    Energy Technology Data Exchange (ETDEWEB)

    None

    2015-09-30

    The U.S. Department of Energy’s (DOE’s) Better Buildings, Better Plants Program is a voluntary partnership initiative to drive significant energy efficiency improvement across energy intensive companies and organizations. 157 leading manufacturers and public water and wastewater treatment utilities are partnering with DOE through Better Plants to improve energy efficiency, slash carbon emissions, and cut energy costs.

  1. PlantEye

    DEFF Research Database (Denmark)

    Sørensen, Helle Kjærsgaard

    2014-01-01

    Katrine Kjær explanes how PlantEye is uesd in her work at Institute of Food Science at Aarhus University.......Katrine Kjær explanes how PlantEye is uesd in her work at Institute of Food Science at Aarhus University....

  2. Plant proton pumps

    DEFF Research Database (Denmark)

    Gaxiola, Roberto A.; Palmgren, Michael Gjedde; Schumacher, Karin

    2007-01-01

    Chemiosmotic circuits of plant cells are driven by proton (H+) gradients that mediate secondary active transport of compounds across plasma and endosomal membranes. Furthermore, regulation of endosomal acidification is critical for endocytic and secretory pathways. For plants to react to their...

  3. Plant growth promoting rhizobacterium

    Energy Technology Data Exchange (ETDEWEB)

    Doktycz, Mitchel John; Pelletier, Dale A.; Schadt, Christopher Warren; Tuskan, Gerald A.; Weston, David

    2015-08-11

    The present invention is directed to the Pseudomonas fluorescens strain GM30 deposited under ATCC Accession No. PTA-13340, compositions containing the GM30 strain, and methods of using the GM30 strain to enhance plant growth and/or enhance plant resistance to pathogens.

  4. The Plant Cell Surface

    Institute of Scientific and Technical Information of China (English)

    Anne-Mie C.Emons; Kurt V.Fagerstedt

    2010-01-01

    @@ Multicellular organization and tissue construction has evolved along essentially different lines in plants and animals. Since plants do not run away, but are anchored in the soil, their tissues are more or less firm and stiff. This strength stems from the cell walls, which encase the fragile cytoplasm, and protect it.

  5. Modulating lignin in plants

    Science.gov (United States)

    Apuya, Nestor; Bobzin, Steven Craig; Okamuro, Jack; Zhang, Ke

    2013-01-29

    Materials and methods for modulating (e.g., increasing or decreasing) lignin content in plants are disclosed. For example, nucleic acids encoding lignin-modulating polypeptides are disclosed as well as methods for using such nucleic acids to generate transgenic plants having a modulated lignin content.

  6. Plants to Avoid

    Science.gov (United States)

    Knowledge of poisonous plants is extremely important for home owners, gardeners, farmers, hunters, hikers, and the rest of the general public. Among the most important plants to avoid in the Delta Region are poison ivy, bull nettle, eastern black nightshade, Queen Ann’s lace, jimsonweed, and trumpe...

  7. Carotenoid metabolism in plants

    Science.gov (United States)

    Carotenoids are mostly C40 terpenoids, a class of hydrocarbons that participate in various biological processes in plants, such as photosynthesis, photomorphogenesis, photoprotection, and development. Carotenoids also serve as precursors for two plant hormones and a diverse set of apocarotenoids. Th...

  8. Evolution & Diversity in Plants.

    Science.gov (United States)

    Pearson, Lorentz C.

    1988-01-01

    Summarizes recent findings that help in understanding how evolution has brought about the diversity of plant life that presently exists. Discusses basic concepts of evolution, diversity and classification, the three-line hypothesis of plant evolution, the origin of fungi, and the geologic time table. Included are 31 references. (CW)

  9. Plant Study Guide.

    Science.gov (United States)

    Brynildson, Inga

    Appropriate for secondary school botany instruction, this study guide focuses on the important roles of plants in human lives. Following a rationale for learning the basic skills of a botanist, separate sections discuss the process sunlight undergoes during photosynthesis, the flow of energy in the food chain, alternative plant lifestyles, plant…

  10. Plant pathogen resistance

    Energy Technology Data Exchange (ETDEWEB)

    Greenberg, Jean T.; Jung, Ho Won; Tschaplinski, Timothy

    2015-10-20

    Azelaic acid or its derivatives or analogs induce a robust and a speedier defense response against pathogens in plants. Azelaic acid treatment alone does not induce many of the known defense-related genes but activates a plant's defense signaling upon pathogen exposure.

  11. Kruemmel nuclear power plant

    International Nuclear Information System (INIS)

    This short description of the site and the nuclear power plant with information on the presumable effects on the environment and the general public is to provide some data material to the population in a popular form so that the citizens may in form themselves about the plant. In this description which shall be presented to the safety report, the site, the technical design and the operation mode of the nuclear power plant are described. Some problems of the emission and the effects of radioactive materials as well as other issues related to the plant which are of interest to the public are dealt with. The supposed accidents and their handling are discussed. The description shows that the selected site is suitable for both setting-up and operation of the plant without affecting the safety of the people living there and that in admissible burdens of the environment shall not have to be expected. (orig./HP)

  12. Terrestrial plant methane production

    DEFF Research Database (Denmark)

    Mikkelsen, Teis Nørgaard; Bruhn, Dan; Møller, Ian M.;

    We evaluate all experimental work published on the phenomenon of aerobic methane (CH4) generation in terrestrial plants. We conclude that the phenomenon is true. Four stimulating factors have been observed to induce aerobic plant CH4 production, i.e. cutting injuries, increasing temperature......, ultraviolet radiation and reactive oxygen species. Further, we analyze rates of measured emission of aerobically produced CH4 in pectin and in plant tissues from different studies and argue that pectin is very far from the sole contributing precursor. Hence, scaling up of aerobic CH4 emission needs to take...... the aerobic methane emission in plants. Future work is needed for establishing the relative contribution of several proven potential CH4 precursors in plant material....

  13. K Water Plant improvements

    Energy Technology Data Exchange (ETDEWEB)

    Trumble, R.E.; Heacock, H.W.; Reinig, L.P.; Jones, S.S.; Mollerus, F.J.

    1959-03-19

    A Task Force was established in the Irradiation Processing Department to examine the K-Reactor Water Plant to (1) review the operating and maintenance experience with the water plant as improved since startup, (2) identify major plant additions which could further improve reliability, and (3) estimate the costs of any such additions. The K-Water Plant basically consists of the electrically driven primary cooling system with power supplied by the BPA system, electrically driven secondary or backup cooling system powered by a steam driven emergency generator pair, and a ``last ditch`` system consisting of hydraulic cross-ties between the two K-Water Plants. This report summarizes information developed in the course of the Task Force deliberations.

  14. Plant control device

    International Nuclear Information System (INIS)

    A plant control device comprises an intellectual instrumentation group for measuring a predetermined process amount, an intellectual equipment group operating in accordance with a self-countermeasure, a system information space for outputting system information, a system level monitoring and diagnosing information generalization section for outputting system information, a system level maintenance information generalization section for outputting information concerning maintenance, a plant level information space and a plant level information generalization section. Each of them determines a state of the plant autonomously, and when abnormality is detected, each of the intellectual instrumentation, equipments and systems exchange information with each other, to conduct required operations including operations of intellectual robots, as required. Appropriate countermeasures for gauges, equipments and systems can be conducted autonomously at a place where operators can not access to improve reliability of complicate operations in the working site, as well as improve plant safety and reliability. (N.H.)

  15. Plant performance enhancement program

    International Nuclear Information System (INIS)

    The Plant Performance Enhancement Program (P2EP), an initiative of the Electric Power Research Institute (EPRI), responds to strong industry incentives to improve nuclear plant thermal efficiency and electrical output. Launched by EPRI's Nuclear Power Division, P2EP operates within the purview of the Plant Support Engineering (PSE) Program, with day-to-day activities conducted out of the P2EP office headquartered at EPRI's facility in Charlotte, North Carolina. This alignment is consistent with EPFU's strategic targets in support of industry goals, keeping P2EP's mission in clear focus: Helping utility thermal performance engineers improve the heat rate of nuclear power plants, thereby increasing unit average capacity and reducing plant operations and maintenance costs per kilowatt-hour

  16. Plant performance enhancement program

    Energy Technology Data Exchange (ETDEWEB)

    Munchausen, J.H. [EPRI Plant Support Engineering, Charlotte, NC (United States)

    1995-09-01

    The Plant Performance Enhancement Program (P{sup 2}EP), an initiative of the Electric Power Research Institute (EPRI), responds to strong industry incentives to improve nuclear plant thermal efficiency and electrical output. Launched by EPRI`s Nuclear Power Division, P{sup 2}EP operates within the purview of the Plant Support Engineering (PSE) Program, with day-to-day activities conducted out of the P{sup 2}EP office headquartered at EPRI`s facility in Charlotte, North Carolina. This alignment is consistent with EPFU`s strategic targets in support of industry goals, keeping P{sup 2}EP`s mission in clear focus: Helping utility thermal performance engineers improve the heat rate of nuclear power plants, thereby increasing unit average capacity and reducing plant operations and maintenance costs per kilowatt-hour.

  17. Plant tissue culture

    International Nuclear Information System (INIS)

    Plant tissue culture refers to growing and multiplication of cells, tissues and organs of plants on defined solid or liquid media under aseptic and controlled environment. The commercial technology is primarily based on micropropagation, in which rapid proliferation is achieved from tiny stem cuttings, axillary buds, and to a limited extent from somatic embryos, cell clumps in suspension cultures and bioreactors. The cultured cells and tissue can take several pathways. The pathways that lead to the production of true-to-type plants in large numbers are the preferred ones for commercial multiplication. The process of micropropagation is usually divided into several stages i.e., pre-propagation, initiation of explants, subculture of explants for proliferation, shooting and rooting, and hardening. These stages are universally applicable in large-scale multiplication of plants. The delivery of hardened small micropropagated plants to growers and market also requires extra care. (author)

  18. Precious benchmarking

    International Nuclear Information System (INIS)

    Recently, there has been a new word added to our vocabulary - benchmarking. Because of benchmarking, our colleagues travel to power plants all around the world and guests from the European power plants visit us. We asked Marek Niznansky from the Nuclear Safety Department in Jaslovske Bohunice NPP to explain us this term. (author)

  19. Encapsulation plant at Forsmark

    Energy Technology Data Exchange (ETDEWEB)

    Nystroem, Anders

    2007-08-15

    SKB has already carried out a preliminary study of an encapsulation plant detached from Clab (Central interim storage for spent fuels). This stand-alone encapsulation plant was named FRINK and its assumed siting was the above-ground portion of the final repository, irrespective of the repository's location. The report previously presented was produced in cooperation with BNFL Engineering Ltd in Manchester and the fuel reception technical solution was examined by Gesellschaft fuer Nuklear-Service mbH (GNS) in Hannover and by Societe Generale pour les Techniques Nouvelles (SGN) in Paris. This report is an update of the earlier preliminary study report and is based on the assumption that the encapsulation plant and also the final repository will be sited in the Forsmark area. SKB's main alternative for siting the encapsulation plant is next to Clab. Planning of this facility is ongoing and technical solutions from the planning work have been incorporated in this report. An encapsulation plant placed in proximity to any final repository in Forsmark forms part of the alternative presentation in the application for permission to construct and operate an installation at Clab. The main technical difference between the planned encapsulation plant at Clab and an encapsulation plant at a final repository at Forsmark is how the fuel is managed and prepared before actual encapsulation. Fuel reception at the encapsulation plant in Forsmark would be dry, i.e. there would be no water-filled pools at the facility. Clab is used for verificatory fuel measurements, sorting and drying of the fuel before transport to Forsmark. This means that Clab will require a measure of rebuilding and supplementary equipment. In purely technical terms, the prospects for building an encapsulation plant sited at Forsmark are good. A description of the advantages and drawbacks of siting the encapsulation plant at Clab as opposed to any final repository at Forsmark is presented in a separate

  20. Encapsulation plant at Forsmark

    International Nuclear Information System (INIS)

    SKB has already carried out a preliminary study of an encapsulation plant detached from Clab (Central interim storage for spent fuels). This stand-alone encapsulation plant was named FRINK and its assumed siting was the above-ground portion of the final repository, irrespective of the repository's location. The report previously presented was produced in cooperation with BNFL Engineering Ltd in Manchester and the fuel reception technical solution was examined by Gesellschaft fuer Nuklear-Service mbH (GNS) in Hannover and by Societe Generale pour les Techniques Nouvelles (SGN) in Paris. This report is an update of the earlier preliminary study report and is based on the assumption that the encapsulation plant and also the final repository will be sited in the Forsmark area. SKB's main alternative for siting the encapsulation plant is next to Clab. Planning of this facility is ongoing and technical solutions from the planning work have been incorporated in this report. An encapsulation plant placed in proximity to any final repository in Forsmark forms part of the alternative presentation in the application for permission to construct and operate an installation at Clab. The main technical difference between the planned encapsulation plant at Clab and an encapsulation plant at a final repository at Forsmark is how the fuel is managed and prepared before actual encapsulation. Fuel reception at the encapsulation plant in Forsmark would be dry, i.e. there would be no water-filled pools at the facility. Clab is used for verificatory fuel measurements, sorting and drying of the fuel before transport to Forsmark. This means that Clab will require a measure of rebuilding and supplementary equipment. In purely technical terms, the prospects for building an encapsulation plant sited at Forsmark are good. A description of the advantages and drawbacks of siting the encapsulation plant at Clab as opposed to any final repository at Forsmark is presented in a separate report

  1. Biofuelled heating plants

    International Nuclear Information System (INIS)

    The purpose of this report is to serve as a basis to enable establishment and operation of small and medium-sized bio-fuel plants, district heating plants and local district heating plants. Furthermore, the purpose of this report is to serve as a guideline and basis when realizing projects, from the first concept to established plant. Taking into account all the phases, from selection of heating system, fuel type, selection of technical solutions, authorization request or application to operate a plant, planning, construction and buying, inspection, performance test, take-over and control system of the plant. Another purpose of the report is to make sure that best available technology is used and to contribute to continuous development of the technology. The report deals mainly with bio-fuelled plants in the effect range 0.3 to10 MW. The term 'plant' refers to combined power and heating plants as well as 'simpler' district heating plants. The last-mentioned is also often referred to as 'local heating plant'. In this context, the term bio fuel refers to a wide range of fuel types. The term bio fuel includes processed fractions like powders, pellets, and briquettes along with unprocessed fractions, such as by-products from the forest industry; chips and bark. Bio fuels also include straw, energy crops and cereal waste products, but these have not been expressly studied in this report. The report is structured with appendixes regarding the various phases of the projects, with the purpose of serving as a helping handbook, or manual for new establishment, helping out with technical and administrative advice and environmental requirements. Plants of this size are already expanding considerably, and the need for guiding principles for design/technology and environmental requirements is great. These guiding principles should comply with the environmental legislation requirements, and must contain advice and recommendations for bio fuel plants in this effect range, also in

  2. Medicinal plants: conception / contraception.

    Science.gov (United States)

    Chaing, H S; Merino-chavez, G; Yang, L L; Wang, F N; Hafez, E S

    1994-01-01

    Researchers have conducted considerable experiments on the effectiveness and therapeutic values of Chinese herbs and parts of plants. We should not ignore the significance of natural medicine. The Chinese have been perfecting medicinal therapy based on the raw ingredients of plants/herbs and their derivatives for thousands of years. Chinese practitioners of traditional medicine prescribe medicines based on yin and yang. Traditional medicine is communicated in a verb or written form. Natural resources used in traditional medicine to treat diseases are not limited to just medicinal plants but also include animals, shell fish, and minerals. Parts of plants used in traditional medicine are leaves, stems, flowers, bark, and root. Chinese medicine is the world's oldest continuous surviving tradition. The Chinese experimented with local plants, often resulting in mild to violent reactions. This process allowed them to become familiar with poisonous plants and those that could relieve pain or successfully treat illness. Current allopathic medicines are composed of synthetic compounds copied from natural chemical derivatives, which tend to be more potent than the original compound. Some medicinal plants used to effect conception/contraception include Striga astiatica (contraceptive); Eurycoma longifolia (male virility); and a mixture of lengkuas, mengkudu masak, black pepper seeds, ginger, salt, and 2 eggs (increase libido). Women in Malaysia take jamu to preserve their body shape and to provide nutrition during pregnancy. Praneem causes local cell-mediated immunity in the uterus. Clinical trials of Praneem with or without the hCG vaccine are planned. PMID:12287843

  3. Tritium behaviors in plants

    International Nuclear Information System (INIS)

    The tritium intake of plants was briefly reviewed in this report. The major chemical forms of tritium released from nuclear facilities are HTO and HT and in the natural environment, tritium is also found in various OBT such as CH3T. The exposure dose to HTO by inhalation exposure in humans was evaluated by ICRP to be 104 fold higher than HT and 102 fold than CH3T. Whereas for the organic compound binding form, it was evaluated to be 2.3 times higher than that of HTO. To study the tritium transition into plants, especially edible parts such as vegetables and fruits and the transition process were thought important and many studies including theoretical analysis have been done mainly regarding HTO, HT and CH3T. The transition of HT tritium into plants was negligible. However, it was reported that the released HT was converted to HTO by microorganisms in surface soil and incorporated into plants. But, the HTO concentration of the leaves in potted plants always lower than that of water in the soil of the pot, suggesting that tritium was not concentrated by the plant. However, there are few studies on tritium transition via photosynthesis into plant tissues. (M.N.)

  4. Hierarchies of plant stiffness.

    Science.gov (United States)

    Brulé, Veronique; Rafsanjani, Ahmad; Pasini, Damiano; Western, Tamara L

    2016-09-01

    Plants must meet mechanical as well as physiological and reproductive requirements for survival. Management of internal and external stresses is achieved through their unique hierarchical architecture. Stiffness is determined by a combination of morphological (geometrical) and compositional variables that vary across multiple length scales ranging from the whole plant to organ, tissue, cell and cell wall levels. These parameters include, among others, organ diameter, tissue organization, cell size, density and turgor pressure, and the thickness and composition of cell walls. These structural parameters and their consequences on plant stiffness are reviewed in the context of work on stems of the genetic reference plant Arabidopsis thaliana (Arabidopsis), and the suitability of Arabidopsis as a model system for consistent investigation of factors controlling plant stiffness is put forward. Moving beyond Arabidopsis, the presence of morphological parameters causing stiffness gradients across length-scales leads to beneficial emergent properties such as increased load-bearing capacity and reversible actuation. Tailoring of plant stiffness for old and new purposes in agriculture and forestry can be achieved through bioengineering based on the knowledge of the morphological and compositional parameters of plant stiffness in combination with gene identification through the use of genetics. PMID:27457986

  5. Optofluidics of plants

    Science.gov (United States)

    Psaltis, Demetri; Vasdekis, Andreas E.; Choi, Jae-Woo

    2016-05-01

    Optofluidics is a tool for synthesizing optical systems, making use of the interaction of light with fluids. In this paper we explore optofluidic mechanisms that have evolved in plants where sunlight and fluidic control combine to define most of the functionality of the plan. We hope that the presentation of how plants function, from an optofluidics point of view, will open a window for the optics community to the vast literature of plant physiology and provide inspiration for new ideas for the design of bio-mimetic optofluidic devices.

  6. Biogas Plant in MUAS

    OpenAIRE

    Varapnickaite, Ernesta

    2015-01-01

    The first and the most important aim is to find out if it is profitable to build a biogas plant in MUAS. Biogas plant has already proved that it is efficient way to use waste and make additional energy for heating and electricity. However in MUAS we have limited amount of biowaste so I will investigate how much energy would ir be possible to get. The second aim is to learn what is the best way to use the energy from the plant – if it should be used in all buildings for electricity and heating...

  7. Radiation hormesis in plant

    International Nuclear Information System (INIS)

    This research was performed to investigate the effects of low dose γ-ray radiation on the seed germination and the following physiological responses in vegetable crops. Special attention was focused on whether the resistance of vegetables against the unfavorable conditions of environment such as subsequent high doses of radiation or Phytophthora blight of pepper could be enhanced as an aspect of radiation hormesis. Analysis and characterization of antioxidant enzyme from plant culture cells and radiation tolerant of transformed plants from antioxidant (POD) were accomplished in the plant irradiated with different dose of γ-ray. (author)

  8. Radiation hormesis in plant

    International Nuclear Information System (INIS)

    This research was performed to investigate the effects of low dose γ-ray radiation on the seed germination and the following physiological responses in vegetable crops. Special attention was focused on whether the resistance of vegetables against the unfavorable conditions of environment such as acid rain or soil types could be enhanced as an aspect of radiation hormesis. Analysis and characterization of antioxidant enzyme from plant culture cells and radiation tolerant of transformed plants from antioxidant enzyme (POD) were accomplished in the plant irradiated with difference dosage of γ-ray

  9. Radiation hormesis in plant

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jae Sung; Song, Hi Sup; Lee, Young Keun; Cun, Ki Jung; Shin, In Chul; Lim, Young Taek

    1999-04-01

    This research was performed to investigate the effects of low dose {gamma}-ray radiation on the seed germination and the following physiological responses in vegetable crops. Special attention was focused on whether the resistance of vegetables against the unfavorable conditions of environment such as acid rain or soil types could be enhanced as an aspect of radiation hormesis. Analysis and characterization of antioxidant enzyme from plant culture cells and radiation tolerant of transformed plants from antioxidant enzyme (POD) were accomplished in the plant irradiated with difference dosage of {gamma}-ray.

  10. Radiation hormesis in plant

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jae Sung; Song, Hi Sup; Lee, Young Keun; Lee, Byung Hun; Shin, In Chul; Lim, Young Taek

    2000-04-01

    This research was performed to investigate the effects of low dose {gamma}-ray radiation on the seed germination and the following physiological responses in vegetable crops. Special attention was focused on whether the resistance of vegetables against the unfavorable conditions of environment such as subsequent high doses of radiation or Phytophthora blight of pepper could be enhanced as an aspect of radiation hormesis. Analysis and characterization of antioxidant enzyme from plant culture cells and radiation tolerant of transformed plants from antioxidant (POD) were accomplished in the plant irradiated with different dose of {gamma}-ray. (author)

  11. Nuclear power plant outages

    International Nuclear Information System (INIS)

    The Finnish Radiation and Nuclear Safety Authority (STUK) controls nuclear power plant safety in Finland. In addition to controlling the design, construction and operation of nuclear power plants, STUK also controls refuelling and repair outages at the plants. According to section 9 of the Nuclear Energy Act (990/87), it shall be the licence-holder's obligation to ensure the safety of the use of nuclear energy. Requirements applicable to the licence-holder as regards the assurance of outage safety are presented in this guide. STUK's regulatory control activities pertaining to outages are also described

  12. FRIB Cryogenic Plant Status

    Energy Technology Data Exchange (ETDEWEB)

    Dixon, Kelly D. [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Ganni, Venkatarao [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Knudsen, Peter N. [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Casagranda, Fabio [Michigan State Univ., East Lansing, MI (United States)

    2015-12-01

    After practical changes were approved to the initial conceptual design of the cryogenic system for MSU FRIB and an agreement was made with JLab in 2012 to lead the design effort of the cryogenic plant, many activities are in place leading toward a cool-down of the linacs prior to 2018. This is mostly due to using similar equipment used at CHLII for the 12 GeV upgrade at JLab and an aggressive schedule maintained by the MSU Conventional Facilities department. Reported here is an updated status of the cryogenic plant, including the equipment procurement status, plant layout, facility equipment and project schedule.

  13. Plutonium Finishing Plant

    Data.gov (United States)

    Federal Laboratory Consortium — The Plutonium Finishing Plant, also known as PFP, represented the end of the line (the final procedure) associated with plutonium production at Hanford.PFP was also...

  14. Fuel rod reprocessing plant

    International Nuclear Information System (INIS)

    A plant for the reprocessing of fuel rods for a nuclear reactor comprises a plurality of rectangular compartments desirably arranged on a rectangular grid. Signal lines, power lines, pipes, conduits for instrumentation, and other communication lines leave a compartment just below its top edges. A vehicle access zone permits overhead and/or mobile cranes to remove covers from compartments. The number of compartments is at least 25% greater than the number of compartments used in the initial design and operation of the plant. Vacant compartments are available in which replacement apparatus can be constructed. At the time of the replacement of a unit, the piping and conduits are altered to utilize the substitute equipment in the formerly vacant compartment, and it is put on stream prior to dismantling old equipment from the previous compartment. Thus the downtime for the reprocessing plant for such a changeover is less than in a traditional reprocessing plant

  15. Chitosan in Plant Protection

    Directory of Open Access Journals (Sweden)

    Abdelbasset El Hadrami

    2010-03-01

    Full Text Available Chitin and chitosan are naturally-occurring compounds that have potential in agriculture with regard to controlling plant diseases. These molecules were shown to display toxicity and inhibit fungal growth and development. They were reported to be active against viruses, bacteria and other pests. Fragments from chitin and chitosan are known to have eliciting activities leading to a variety of defense responses in host plants in response to microbial infections, including the accumulation of phytoalexins, pathogen-related (PR proteins and proteinase inhibitors, lignin synthesis, and callose formation. Based on these and other proprieties that help strengthen host plant defenses, interest has been growing in using them in agricultural systems to reduce the negative impact of diseases on yield and quality of crops. This review recapitulates the properties and uses of chitin, chitosan, and their derivatives, and will focus on their applications and mechanisms of action during plant-pathogen interactions.

  16. Plant Vascular Biology 2010

    Energy Technology Data Exchange (ETDEWEB)

    Ding, Biao

    2014-11-17

    This grant supported the Second International Conference on Plant Vascular Biology (PVB 2010) held July 24-28, 2010 on the campus of Ohio State University, Columbus, Ohio. Biao Ding (Ohio State University; OSU) and David Hannapel (Iowa State University; ISU) served as co-chairs of this conference. Biao Ding served as the local organizer. PVB is defined broadly here to include studies on the biogenesis, structure and function of transport systems in plants, under conditions of normal plant growth and development as well as of plant interactions with pathogens. The transport systems cover broadly the xylem, phloem, plasmodesmata and vascular cell membranes. The PVB concept has emerged in recent years to emphasize the integrative nature of the transport systems and approaches to investigate them.

  17. Protoplasts and plant viruses

    International Nuclear Information System (INIS)

    The use of protoplasts in the study of plant viruses has attracted considerable attention since its inception in the late 1960s. This article is an attempt to assess the current status of protoplasts (primarily) and all cell cultures (in some instances) in studies of virus infection, virus replication, cytopathology, cross-protection, virus resistance, and the use of in vitro methods and genetic engineering to recover virus-resistant plants. These areas of study proved difficult to do entirely with whole plants or plant parts. However, because protoplasts could be synchronously infected with virus, they provided a valuable alternative means of following biochemical and cytological events in relation to the virus growth cycle in a more precise manner than previously possible

  18. Annual Plant Reviews

    DEFF Research Database (Denmark)

    The proteome comprises all protein species resulting from gene expression in a cell, organelle, tissue or organism. By definition, proteomics aims to identify and characterise the expression pattern, cellular location, activity, regulation, post-translational modifications, molecular interactions......, three dimensional structures and functions of each protein in a biological system. In plant science, the number of proteome studies is rapidly expanding after the completion of the Arabidopsis thaliana genome sequence, and proteome analyses of other important or emerging model systems and crop plants...... are in progress or are being initiated. Proteome analysis in plants is subject to the same obstacles and limitations as in other organisms, but the nature of plant tissues, with their rigid cell walls and complex variety of secondary metabolites, means that extra challenges are involved that may not...

  19. Plant Transporter Identification

    DEFF Research Database (Denmark)

    Larsen, Bo

    , tissues, cells and intracellular compartments. Since plants are highly compartmentalized organisms with complex transportation infrastructures, they consequently have many transporters. However, the vast majority of predicted transporters have not yet been experimentally verified to have transport...

  20. Nuclear power plant construction

    International Nuclear Information System (INIS)

    The legal aspects of nuclear power plant construction in Brazil, derived from governamental political guidelines, are presented. Their evolution, as a consequence of tecnology development is related. (A.L.S.L.)

  1. Chitosan in Plant Protection

    OpenAIRE

    Abdelbasset El Hadrami; Adam, Lorne R.; Ismail El Hadrami; Fouad Daayf

    2010-01-01

    Chitin and chitosan are naturally-occurring compounds that have potential in agriculture with regard to controlling plant diseases. These molecules were shown to display toxicity and inhibit fungal growth and development. They were reported to be active against viruses, bacteria and other pests. Fragments from chitin and chitosan are known to have eliciting activities leading to a variety of defense responses in host plants in response to microbial infections, including the accumulation of ph...

  2. Technology and power plants

    International Nuclear Information System (INIS)

    In this paper the contributions presented at the 18th IAEA Fusion Energy Conference in the field of technology and power plants are summarised with reference to the following distinct issues: ITER EDA Design, ITER Technology R and D, Progress Towards Advanced Performance and Steady State, Compact Cu Burning Plasma Experiments and Neutron Sources, Advanced Materials Research, Power Plant Design and Economic Forecasts, and Conclusions

  3. Organic plant breeding

    OpenAIRE

    Wolfe, Martin S.

    2002-01-01

    This report was presented at the UK Organic Research 2002 Conference. To a major extent, organic farming depends currently on plant and animal varieties that have been bred for non-organic farming and that are often not suited to organic production. This position is inconsistent with a holistic approach to organic agriculture. Organically-bred plant varieties are needed to develop both the potential of organic agriculture and its integrity. A first attempt at developing a concept for organic ...

  4. NMR, water and plants

    International Nuclear Information System (INIS)

    This thesis describes the application of a non-destructive pulsed proton NMR method mainly to measure water transport in the xylem vessels of plant stems and in some model systems. The results are equally well applicable to liquid flow in other biological objects than plants, e.g. flow of blood and other body fluids in human and animals. The method is based on a pulse sequence of equidistant π pulses in combination with a linear magnetic field gradient. (Auth.)

  5. Plant signalling peptides

    OpenAIRE

    Wiśniewska, Justyna; Trejgell, Alina; Tretyn, Andrzej

    2003-01-01

    Biochemical and genetic studies have identified peptides that play crucial roles in plant growth and development, including defence mechanisms in response to wounding by pests, the control of cell division and expansion, and pollen self-incompatibility. The first two signalling peptides to be described in plants were tomato systemin and phytosulfokine (PSK). There is also biochemical evidence that natriuretic peptide-like molecules, immunologically-relatedt o those found ...

  6. Modelling plant hormone gradients.

    OpenAIRE

    S. Moore; Zhang, X.; Liu, J; Lindsey, K.

    2015-01-01

    Cellular patterning in the Arabidopsis root is coordinated via a localised auxin concentration maximum in the root tip, requiring the regulated expression of specific genes. The activities of plant hormones such as auxin, ethylene and cytokinin depend on cellular context and exhibit either synergistic or antagonistic interactions. Due to the complexity and nonlinearity of spatiotemporal interactions between both hormones and gene expression in root development, modelling plant hormone gradien...

  7. The plant mitochondrial proteome

    DEFF Research Database (Denmark)

    Millar, A.H.; Heazlewood, J.L.; Kristensen, B.K.;

    2005-01-01

    The plant mitochondrial proteome might contain as many as 2000-3000 different gene products, each of which might undergo post-translational modification. Recent studies using analytical methods, such as one-, two- and three-dimensional gel electrophoresis and one- and two-dimensional liquid...... context to be defined for them. There are indications that some of these proteins add novel activities to mitochondrial protein complexes in plants....

  8. Phenolics and Plant Allelopathy

    OpenAIRE

    De-An Jiang; Cun-De Pan; Xiao Ruan; Qiang Wang; Zhao-Hui Li

    2010-01-01

    Phenolic compounds arise from the shikimic and acetic acid (polyketide) metabolic pathways in plants. They are but one category of the many secondary metabolites implicated in plant allelopathy. Phenolic allelochemicals have been observed in both natural and managed ecosystems, where they cause a number of ecological and economic problems, such as declines in crop yield due to soil sickness, regeneration failure of natural forests, and replanting problems in orchards. Phenolic allelochemical ...

  9. Plant Formate Dehydrogenase

    Energy Technology Data Exchange (ETDEWEB)

    John Markwell

    2005-01-10

    The research in this study identified formate dehydrogenase, an enzyme that plays a metabolic role on the periphery of one-carbon metabolism, has an unusual localization in Arabidopsis thaliana and that the enzyme has an unusual kinetic plasticity. These properties make it possible that this enzyme could be engineered to attempt to engineer plants with an improved photosynthetic efficiency. We have produced transgenic Arabidopsis and tobacco plants with increased expression of the formate dehydrogenase enzyme to initiate further studies.

  10. Lifestyles of plant viruses

    OpenAIRE

    Roossinck, Marilyn J.

    2010-01-01

    The vast majority of well-characterized eukaryotic viruses are those that cause acute or chronic infections in humans and domestic plants and animals. However, asymptomatic persistent viruses have been described in animals, and are thought to be sources for emerging acute viruses. Although not previously described in these terms, there are also many viruses of plants that maintain a persistent lifestyle. They have been largely ignored because they do not generally cause disease. The persisten...

  11. Imprinting in plants

    Institute of Scientific and Technical Information of China (English)

    GUTIERREZ-MARCOS Jose

    2009-01-01

    Genomic imprinting leads to the differential expression of parental alleles after fertilization. Imprinting appears to have evolved independently in mammals and flowering plants to regulate the development of nutrient-transfer placental tissues. In addition, the regulation of imprinting in both mammals and flowering plants involves changes in DNA methylation and histone methylation, thus suggesting that the epigenetic signals that regulate imprinting have been co-opted in these distantly related species.

  12. Pellet plant energy simulator

    Science.gov (United States)

    Bordeasu, D.; Vasquez Pulido, T.; Nielsen, C.

    2016-02-01

    The Pellet Plant energy simulator is a software based on advanced algorithms which has the main purpose to see the response of a pellet plant regarding certain location conditions. It combines energy provided by a combined heat and power, and/or by a combustion chamber with the energy consumption of the pellet factory and information regarding weather conditions in order to predict the biomass consumption of the pellet factory together with the combined heat and power, and/or with the biomass consumption of the combustion chamber. The user of the software will not only be able to plan smart the biomass acquisition and estimate its cost, but also to plan smart the preventive maintenance (charcoal cleaning in case of a gasification plant) and use the pellet plant at the maximum output regarding weather conditions and biomass moisture. The software can also be used in order to execute a more precise feasibility study for a pellet plant in a certain location. The paper outlines the algorithm that supports the Pellet Plant Energy Simulator idea and presents preliminary tests results that supports the discussion and implementation of the system

  13. Haploidization of vegetable plants

    International Nuclear Information System (INIS)

    Haploid plants have been widely introduced into vegetable crops breeding programmes, also in Poland. They can be produced by means of androgenesis in brassicas and pepper, gynogenesis in onion and beetroot, or induced parthenogenesis in vegetables belonging to the family Cucurbitaceae. Androgenesis in brassicas can be induced using both anther and microspore cultures. Efficiency of this process, provided the optimal medium composition, depends on conditions for culture initiation (thermal shock is necessary). Around 40% of developing androgenic plants of white cabbage and Brussels sprouts are diploids and after their self-pollination doubled-haploid lines can instantly be produced. Gynogenic development of haploid cells constituting the embryo sac in onion can be induced by a flower bud culture method. Firstly an induction medium is used, followed by a regeneration medium. Almost 90% of obtained plants are haploids and therefore the use of antimitotic agents is necessary in order to double their chromosome number. Induced parthogenesis is being applied in cucumber. Pollen previously exposed to ionising radiation is used for pollination, which causes the development of embryos being subsequently plated on a medium in order to develop haploid plants. Efficiency of the processes leading to the production of haploid plants in every species depends to a high degree on the genotype and growth conditions of donor plants. (author)

  14. Plant monitoring device

    International Nuclear Information System (INIS)

    The device of the present invention comprises a data collecting section for periodically collecting processed data sent from plant equipments, a top node induction and processing section for an important plant function model for inducing the plant function to be noted particularly by an operator from important plant function models by using process data and a window screen selection section for selecting a window screen to be displayed based on the result of the evaluation for each of function nodes based on the processing described above and determining the layout and automatically forming the display screen. It is constituted so that the kind and the layout of the window under display are checked if they are the same as those one cycle before or not and, if they are different, the screen is automatically switched to a new screen display. Then, operator's psychological burdens such as selection of information and judgement for the operation upon occurrence of plant abnormality and accident can be mitigated, to provide a safe operation circumstance having reinforced monitoring of the function of the whole plant can be provided. (N.H.)

  15. Power plants 2010. Lectures

    International Nuclear Information System (INIS)

    The proceedings include the following lectures: Facing the challenges - new structures for electricity production. Renewable energies in Europe - chances and challenges. Nuclear outlook in the UK. Sustainable energy for Europe. Requirements of the market and the grid operator at the electricity production companies. Perspectives for the future energy production. Pumped storage plants - status and perspectives. Nuclear power/renewable energies -partners or opponents? New fossil fired power stations in Europe - status and perspectives. Nuclear energy: outlook for new build and lifetime extension in Europe. Biomass in the future European energy market - experiences for dong energy. Meeting the EU 20:20 renewable energy targets: the offshore challenges. DESERTEC: sustainable electricity for Europe, Middle East and North Africa. New power plants in Europe - a challenge for project and quality management. Consideration of safely in new build activities of power plants. Challenges to an integrated development in Maasvlakte, Netherlands. Power enhancement in EnBW power plants. Operational experiences of CCS pilot plants worldwide. Two years of operational experiences with Vattenfall's oxyfuel pilot plant. Pre-conditions for CCS. Storage technologies for a volatile generation. Overview: new generation of gas turbines.

  16. Plant critical concept

    International Nuclear Information System (INIS)

    The objective of the effort summarized in this paper is to support O and M cost reduction efforts by focusing resources on components and processes critical to plant performance. This effort will identify where resources on nonplant critical components and processes can be reduced or eliminated. This method will use a functional assessment as the basis for component-specific evaluations and ranking. This effort consists of two stages conducted in series. The first stage is to deterministically identify that set of plant components that are relevant from a plant performance perspective (i.e., safety, economics, reliability). The second stage probabilistically ranks that set of plant components from an importance perspective, where importance pertains to the particular application and is probabilistically weighted. The results of a pilot study identified that only a relatively small set of components are truly critical from an integrated plant performance perspective. These results are consistent with work being conducted at other nuclear power plants, as well as other commercial facilities. Initial implementation of this effort is estimated to reduce O and M costs on the order of $1 million per year. Subsequent applications are anticipated to increase that savings to $4--$5 million per year

  17. Uranium speciation in plants

    International Nuclear Information System (INIS)

    Detailed knowledge of the nature of uranium complexes formed after the uptake by plants is an essential prerequisite to describe the migration behavior of uranium in the environment. This study focuses on the determination of uranium speciation after uptake of uranium by lupine plants. For the first time, time-resolved laser-induced fluorescence spectroscopy and X-ray absorption spectroscopy were used to determine the chemical speciation of uranium in plants. Differences were detected between the uranium speciation in the initial solution (hydroponic solution and pore water of soil) and inside the lupine plants. The oxidation state of uranium did not change and remained hexavalent after it was taken up by the lupine plants. The chemical speciation of uranium was identical in the roots, shoot axis, and leaves and was independent of the uranium speciation in the uptake solution. The results indicate that the uranium is predominantly bound as uranyl(VI) phosphate to the phosphoryl groups. Dandelions and lamb's lettuce showed uranium speciation identical to lupine plants. (orig.)

  18. A modular reactor plant

    International Nuclear Information System (INIS)

    This paper describes a new concept in liquid metal reactors that is being developed by General Electric under contract to the Department of Energy. This concept is called the Modular Reactor Plant. While this effort is not expected to have a near-term impact, it is directed toward three principal issues currently affecting nuclear power in the United States. First, plant costs have escalated to the point where the startup of new plants require large electric rate increases. Second, the cost of new plants coming on-line today vary by as much as a factor of three. And, third, nuclear construction times often exceed the utilities prudent planning cycle. This paper describes how General Electric's Modular Reactor Plant addreses these issues through shop fabrication and assembly, rail shipment to the site for rapid installation of nuclear components and inherent reactor protection. In addition, it is expected the modular reactor plant will reduce the current cost of development and demonstration of liquid metal reactors to an affordable level

  19. Plant extracts as radioprotectors

    International Nuclear Information System (INIS)

    Several studies show that the extracts of some plants, namely containing vitamins or sulfide components, have radioprotection properties against the effects of ionizing radiation. In Syria, many of hates plants are available. This experiment was conducted in order to test the ability of ten different plants to protect against the radiation damages. These plants are Daucus carota L., Brassica oleracea L, Aloe vera L., Opuntia ficus-indica, Allium cepa L., Capsicum annuum L., Scilla maritima L., Allium sativum L., Rubus sanctus L. and Rosa canina L.Their effects on the protection of E. Coli growth after the exposure to L.D 50 of gamma radiation (100 Gy) were investigated . Two concentrations to each plant extract were tested, both were than 1%. Our results are indicating that the protection depend on plant. The radioprotection factors were ranged between 1.42 to 2.39. The best results were obtained by using the extract of Allium sativum L. (2.01), Opuntia ficus-indica (2.14) and Capsiucum annuum L. (2.39). (author) 16 refs., 2 tabs., 4 figs

  20. Plant extracts as radioprotectors

    International Nuclear Information System (INIS)

    Several studies show that the extracts of some plants, namely containing vitamins or sulfide components, have radioprotection properties against the effects of ionizing radiation. In Syria, many of hates plants are available. This experiment was conducted in order to test the ability of ten different plants to protect against the radiation damages. These plants are Daucus carota L., Brassica oleracea L, Aloe vera L., Opuntia ficus-indica, Allium cepa L., Capsicum annuum L., Scilla maritima L., Allium sativum L., Rubus sanctus L. and Rosa canina L.Their effects on the protection of E. Coli growth after the exposure to L.D 50 of gamma radiation (100 Gy) were investigated . Two concentrations to each plant extract were tested, both were than 1%. Our results are indicating that the protection depend on plant. The radioprotection factors were ranged between 1.42 to 2.39. The best results were obtained by using the extract of Allium sativum L. (2.01), Opuntia ficus-indica (2.14) and Capsiucum annuum L. (2.39). (author)

  1. Reconstruction of instrumentation and control system (SKR)

    International Nuclear Information System (INIS)

    For the first time extensive upgrades have been performed in all safety related areas of units with WWER 440/230 reactors. One of the most important actions was the replacement of the safety and safety related instrumentation and control. The state of the art digital safety instrumentation and control system TELEPERM XS has been implemented in units 1 and 2 of the Bohunice V1 power plant. The requirements as deduced from safety assessments conducted by commissions of international experts have been fulfilled, so that Bohunice V1 after this gradual reconstruction has been upgraded to an internationally accepted safety level for the remainder of its service life. (author)

  2. African names for American plants

    NARCIS (Netherlands)

    Andel, van T.R.

    2015-01-01

    African slaves brought plant knowledge to the New World, sometimes applying it to related plants they found there and sometimes bringing Old World plants with them. By tracing the linguistic parallels between names for plants in African languages and in communities descended from African slaves, pie

  3. Japanese national reference reprocessing plant

    International Nuclear Information System (INIS)

    This paper gives a general description of the proposed Japanese national reprocessing plant and of the design philosophy. The plant is in most respects similar to the base case reprocessing plant, with an annual throughput of 100-1500 tU. The plant would be co-located with a fuel fabrication facility

  4. GEOTHERMAL POWER GENERATION PLANT

    Energy Technology Data Exchange (ETDEWEB)

    Boyd, Tonya

    2013-12-01

    Oregon Institute of Technology (OIT) drilled a deep geothermal well on campus (to 5,300 feet deep) which produced 196oF resource as part of the 2008 OIT Congressionally Directed Project. OIT will construct a geothermal power plant (estimated at 1.75 MWe gross output). The plant would provide 50 to 75 percent of the electricity demand on campus. Technical support for construction and operations will be provided by OIT’s Geo-Heat Center. The power plant will be housed adjacent to the existing heat exchange building on the south east corner of campus near the existing geothermal production wells used for heating campus. Cooling water will be supplied from the nearby cold water wells to a cooling tower or air cooling may be used, depending upon the type of plant selected. Using the flow obtained from the deep well, not only can energy be generated from the power plant, but the “waste” water will also be used to supplement space heating on campus. A pipeline will be construction from the well to the heat exchanger building, and then a discharge line will be construction around the east and north side of campus for anticipated use of the “waste” water by facilities in an adjacent sustainable energy park. An injection well will need to be drilled to handle the flow, as the campus existing injection wells are limited in capacity.

  5. Pinellas Plant facts

    International Nuclear Information System (INIS)

    This plant was built in 1956 in response to a need for the manufacture of neutron generators, a principal component in nuclear weapons. The neutron generators consist of a miniaturized linear ion accelerator assembled with the pulsed electrical power supplies required for its operation. The ion accelerator, or neutron tube, requires ultra clean, high vacuum technology: hermetic seals between glass, ceramic, glass-ceramic, and metal materials: plus high voltage generation and measurement technology. The existence of these capabilities at the Pinellas Plant has led directly to the assignment of the lightning arrester connector, specialty capacitor, vacuum switch, and crystal resonator. Active and reserve batteries and the radioisotopically-powered thermoelectric generator draw on the materials measurement and controls technologies which are required to ensure neutron generator life. A product development and production capability in alumina ceramics, cermet (electrical) feedthroughs, and glass ceramics has become a specialty of the plant; the laboratories monitor the materials and processes used by the plant's commercial suppliers of ferroelectric ceramics. In addition to the manufacturing facility, a production development capability is maintained at the Pinellas Plant

  6. Nuclear fuel reprocessing plant

    International Nuclear Information System (INIS)

    The present invention concerns an improvement for corrosion resistance of the welded portion of materials which constitutes a reprocessing plant of spent nuclear fuels. That is, Mo-added austenite stainless steel is used for a plant member at the portion in contact with a nitric acid solution. Then, laser beams are irradiated to the welded portion of the plant member and the surface layer is heated to higher than 1,000degC. If such a heat treatment is applied, the degradation of corrosion resistance of the welded portion can be eliminated at the surface. Further, since laser beams are utilized, heating can be limited only to the surface. Accordingly, undesired thermal deformation of the plant members can be prevented. As a result, the plant member having high pit corrosion resistance against a dissolution solution for spent fuels containing sludges comprising insoluble residue and having resistance to nitric acid solution also in the welded portion substantially equal to that of the matrix can be attained. (I.S.)

  7. AECL's plant Information Technologies

    International Nuclear Information System (INIS)

    The competitiveness of the world-wide energy market is a continual driving force for improvements to CANDU performance and lower operating, maintenance, and administration costs. As in other industries, advanced Information Technologies (IT) are changing the way we work and conduct business. The nuclear industry is no different and there exists strong incentives to improve work processes and provide faster and more flexible access to the information needed to effectively manage and maintain nuclear plant assets. AECL has responded to these forces through the development of a vision of integrated IT systems addressing all phases of nuclear plant development and operations. This includes the initial engineering, design, and construction processes as well as support to the long-term operations and maintenance. Integral to the AECL vision is the need for cost-effective engineering and operational configuration management systems, proactive maintenance processes and systems, and advanced plant surveillance and diagnostics. This paper presents the vision and describes the integrated information systems needed to manage both the design basis and operating plant data systems to ensure the cost-effective, long-term viability of CANDU plants. (author)

  8. Plant critical concept

    International Nuclear Information System (INIS)

    The achievement of operation and maintenance (O ampersand M) cost reductions is a prime concern for plant operators. Initiatives by the nuclear industry to address this concern are under way and/or in development. These efforts include plant reliability studies, reliability-centered maintenance, risk ranking and testing philosophies, performance-based testing philosophies, graded quality assurance, and so forth. This paper presents the results of an effort to develop a methodology that integrates and applies the common data and analysis requirements for a number of risk-based and performance-based initiatives. This initial phase of the effort applied the methodology and its results to two initiatives. These were the procurement function and the preventive maintenance function. This effort integrated multiple programs and functions to identify those components that are truly critical from an integrated plant performance perspective. The paper describes the scope of the effort, the development of a methodology to identify plant critical components, and the application of these results to the maintenance rule compliance, preventive maintenance, and procurement functions at the candidate plant

  9. Nuclear power plant

    International Nuclear Information System (INIS)

    The present invention provides reduction of volumes of buildings and the area of the buildings having a plurality of plants. Namely, a plurality of reactor building areas corresponding to a plurality of plants are disposed in a reactor building. In each of the reactor building areas, apparatuses including reactors of the plants are disposed. In addition, a plurality of reactor wells, spent fuel pools, pools for temporary storing facilities are arranged on an identical line. With such a constitution, since various kinds of facilities in the reactor buildings can be used in common, the volume of buildings and areas for the buildings in the plants as a whole can be reduced. In addition, turbine buildings can be used in common by the same idea. As a result, the number of buildings, the volume of the buildings and the area of the buildings of the plants can be reduced as a whole thereby enabling to reduce the steps, costs and materials required for building construction. (I.S.)

  10. Cadmium uptake by plants

    Energy Technology Data Exchange (ETDEWEB)

    Haghiri, F.

    1973-01-01

    Absorption of /sup 115m/Cd by soybean (Gylcine max l.) plants via foliar and root systems and translocation into the seed was determined. The uptake of /sup 115m/Cd by soybeans via the root system was more efficient than that of the foliar placement. Growth and Cd concentrations of soybean and wheat (Triticum aestivum l.) tops were influenced by soil-applied Cd. In both crops, the Cd concentration of plant tops increased while yield decreased with increasing levels of applied Cd. Cadmium toxicitiy began to occur in both crops at the lowest level of soil applied Cd (2.5 ppM). With soybean plants, Cd toxicity symptoms resembled fe chlorosis. For wheat plants there were no visual symptoms other than the studied growth. The relative concentration of Cd found in several vegetable crops varied depending on the plant species. The relative Cd concentration in descending order for various vegetables was lettuce (Lactuca sativa l.) > radish top (Raphanus sativus l.) > celery stalk (Apium graveolens l.) > celery leaves greater than or equal to green pepper (Capsicum frutescens l.) > radish roots.

  11. Obrigheim nuclear power plant

    International Nuclear Information System (INIS)

    In 1973 the 345 MW pressurized water nuclear power plant at Obrigheim operated on base load, generating approximately 2.63 TWh, approximately 2.5 TWh of which was supplied to the KWO members. The plant availability for the year was 89.9%. Of the 10.1% non-availability, 6.4% (23 d) was caused by refuelling, including inspection, overhaul and repair operations and routine tests carried out in September 1973. 3.3% was due to stoppages for repairs to a steam generator and the two main cooling pumps, while 0.4% resulted from failures in the electrical section of the plant. The plant was shut down seven times in all, including three scrams. The average core burnup at the end of the fourth cycle (1 September 1973) was 18900 MWd/tU, representing an average burnup of approximately 37500 MWd/tU for a fuel element used in all four cycles. The operating performance of the steam generators and the result of the steam generator inspection carried out during refuelling in 1973 suggest no progressive damage. The quantities of radioactive materials released to the environment in 1973 were well below the officially permitted levels. The availability of the plant from the beginning of pilot operation in 1969 to the end of 1973 was 83.7 %

  12. Antidiabetic Plants of Iran

    Directory of Open Access Journals (Sweden)

    Ashrafeddin Goushegir

    2011-10-01

    Full Text Available To identify the antidiabetic plants of Iran, a systematic review of the published literature on the efficacy of Iranian medicinal plant for glucose control in patients with type 2 diabetes mellitus was conducted. We performed an electronic literature search of MEDLINE, Science Direct, Scopus, Proquest, Ebsco, Googlescholar, SID, Cochrane Library Database, from 1966 up to June 2010. The search terms were complementary and alternative medicine (CAM, diabetes mellitus, plant (herb, Iran, patient, glycemic control, clinical trial, RCT, natural or herbal medicine, hypoglycemic plants, and individual herb names from popular sources, or combination of these key words. Available Randomized Controlled Trials (RCT published in English or Persian language examined effects of an herb (limited to Iran on glycemic indexes in type 2 diabetic patients were included. Among all of the articles identified in the initial database search, 23 trials were RCT, examining herbs as potential therapy for type 2 diabetes mellitus. The key outcome for antidiabetic effect was changes in blood glucose or HbA1 c, as well as improves in insulin sensitivity or resistance. Available data suggest that several antidiabetic plants of Iran need further study. Among the RCT studies, the best evidence in glycemic control was found in Citrullus colocynthus, Ipomoea betatas, Silybum marianum and Trigonella foenum graecum.

  13. Plants cultivation in controlled containments

    International Nuclear Information System (INIS)

    The plants cultivation in controlled containments permits to the - Departement d'Ecophysiologie Vegetale et de Microbiologie (DVEM) - of the CEA to lead several topics of research. The works of DVEM which are based on the molecular labelling, technique adapted to plants, contribute to understand the plant - soil relationships and the plant growth process. In addition, the staff of DVEM study the impact of pollutant heavy metals, existing in the soil, on plants and the plant stress induced by oxygen, light, ionizing radiations,... and defence mechanisms of plants (F. M.)

  14. APROS nuclear plant analyser

    International Nuclear Information System (INIS)

    The paper describes the build-up of the Loviisa plant primary circuit model using graphical user interface and generic components. The secondary circuit model of Loviisa is constructed in the same manner. The entire power plant model thus obtained is used for the calculation of two example transients. These examples originate from the Loviisa 2 unit dynamical tests in 1980. The Modular Plant Analyser results are compared with the Loviisa Unit 2 measurement data. This comparison indicates good agreement with the data. The present work has been performed using the Alliant FX/40 minisupercomputer. With this computer the Loviisa model fulfills at present the real-time requirement with 0.5 second timestep. (orig./DG)

  15. Geothermal Plant Capacity Factors

    Energy Technology Data Exchange (ETDEWEB)

    Greg Mines; Jay Nathwani; Christopher Richard; Hillary Hanson; Rachel Wood

    2015-01-01

    The capacity factors recently provided by the Energy Information Administration (EIA) indicated this plant performance metric had declined for geothermal power plants since 2008. Though capacity factor is a term commonly used by geothermal stakeholders to express the ability of a plant to produce power, it is a term frequently misunderstood and in some instances incorrectly used. In this paper we discuss how this capacity factor is defined and utilized by the EIA, including discussion on the information that the EIA requests from operations in their 923 and 860 forms that are submitted both monthly and annually by geothermal operators. A discussion is also provided regarding the entities utilizing the information in the EIA reports, and how those entities can misinterpret the data being supplied by the operators. The intent of the paper is to inform the facility operators as the importance of the accuracy of the data that they provide, and the implications of not providing the correct information.

  16. Collective biogas plants

    International Nuclear Information System (INIS)

    Papers contributed to the European seminar on collective biogas plants held at Herning, Denmark on October 22-23 under the auspices of the Commission of the European Communities, Directorate-General for Energy (DG XVII) are presented. Within the framework of the THERMIE programme, a network of OPETs (Organizations for the Promotion of Energy Technologies) was set up in order to disseminate information on new energy technologies throughout the European communities. The potential for further implementation of centralized capacity for the conversion of animal manures and other organic wastes to bio-fuels, not only in central and eastern Europe but also in the developing countries, is discussed in addition to the relevant technologies. Actual biomass conversion plants are described and details are given on operational experience and plant management. Agricultural, economic and policy aspects are also dealt with. (AB)

  17. Annotation on Mangrove Plants

    Institute of Scientific and Technical Information of China (English)

    王伯荪; 张炜银; 梁士楚; 昝启杰

    2004-01-01

    This paper reviews and discusses the technical terms and definition of mangrove and mangal, as well as mangrove plant. The word mangrove has been used to refer either to the constituent plant of tropical and subtropical intertidal community or to the community itself, but this usage makes more confusion. Being leaved mangrove in the more limited sense for the constituent plant species, mangal was proposed by MacNae (1968) as aterm for mangrove community, which has been universally applied to most previous studies and should be adopted now. Mangrove should be therefore defined as a tropical and subtropical tree restricted to intertidal zones, which possesses some morphological specializion and physiological mechanism adapted to its habitat, and mangal as a tropical and subtropical forest community restricted to marine intertidal zones and periodically inundeated by the tides. A new term ″consortive plant″ is proposed here for herb, liana, epiphyte or parasite, which is restricted in the strict mangrove habitat.

  18. Medicinal plants of Kermanshah province

    OpenAIRE

    Mostafa Nemati Paykani; Nastaran Jalilian

    2012-01-01

    In order to collect and determine medicinal plants of Kermanshah province, at first a list of medicinal plants and their localities was prepared based on the floristic list of the Kermanshah province mentioned as medicinal plants in the related references. Then, stands of the mentioned medicinal plants were referred according to the topographic maps and the extracted localities and after collecting medicinal plant specimens, herbarium specimens were prepared based on the traditional taxonomic...

  19. Mammalian sex hormones in plants

    OpenAIRE

    Andrzej Skoczowski; Anna Janeczko

    2011-01-01

    The occurrence of mammalian sex hormones and their physiological role in plants is reviewed. These hormones, such as 17β-estradiol, androsterone, testosterone or progesterone, were present in 60-80% of the plant species investigated. Enzymes responsible for their biosynthesis and conversion were also found in plants. Treatment of the plants with sex hormones or their precursors influenced plant development: cell divisions, root and shoot growth, embryo growth, flowering, pollen tube ...

  20. Owners of nuclear power plants

    International Nuclear Information System (INIS)

    The list indicates percentage ownership of commercial nuclear power plants by utility companies as of September 1, 1982. The list includes all plants licensed to operate, under construction, docketed for NRC safety and environmental reviews, or under NRC antitrust review. Part I lists plants alphabetically with their associated applicants and percentage ownership. Part II lists applicants alphabetically with their associated plants and percentage ownership. Part I also indicates which plants have received operating licenses

  1. Total Logistic Plant Solutions

    Directory of Open Access Journals (Sweden)

    Dusan Dorcak

    2016-02-01

    Full Text Available The Total Logistics Plant Solutions, plant logistics system - TLPS, based on the philosophy of advanced control processes enables complex coordination of business processes and flows and the management and scheduling of production in the appropriate production plans and planning periods. Main attributes of TLPS is to create a comprehensive, multi-level, enterprise logistics information system, with a certain degree of intelligence, which accepts the latest science and research results in the field of production technology and logistics. Logistic model of company understands as a system of mutually transforming flows of materials, energy, information, finance, which is realized by chain activities and operations

  2. Multiplex Tokamak power plant

    International Nuclear Information System (INIS)

    The concept of multiplexing for a fusion power core as an option for producing power is explored. Superconducting, as well as normal magnet, coils in either first or second stability regimes are considered. The results show that multiplex plants with superconducting magnets operating in the second stability regime could be competitive with the single-unit plants in some unit sizes. The key issues that impact the expected benefits of multiplexing must be investigated further. These are factory fabrication, economy of scale, the extent of equipment sharing, inherent safety, maintainability, and utility load management

  3. ITER plant systems

    International Nuclear Information System (INIS)

    As part of a series of documents published by the IAEA that summarize the results of the Conceptual Design Activities for the ITER project, this publication describes the conceptual design of the ITER plant systems, in particular (i) the heat transport system, (ii) the electrical distribution system, (iii) the requirements for radioactive equipment handling, the hot cell, and waste management, (iv) the supply system for fluids and operational chemicals, (v) the qualitative analyses of failure scenarios and methods of burn stability control and emergency shutdown control, (vi) analyses of tokamak building functions and design requirements, (vii) a plant layout, and (viii) site requirements. Refs, figs and tabs

  4. Chemwes Uranium Plant

    International Nuclear Information System (INIS)

    The Chemwes Uranium Plant is located in an area which is underlain to a major extent by pinnacled dolomite. It was decided to adopt a replacement fill for support of light structures in preference to alternatives such as the installation of piles or 'bridging' between pinnacles. The 3 m thick soil 'raft' resulting from the fill replacement technique made it possible to support all but a very small number of foundations upon shallow spread footings or raft slabs. This article describes a replacement fill for support of light structures at the Chemwes Uranium Plant

  5. MRI of intact plants

    OpenAIRE

    As, van, H.; Scheenen, T.; Vergeldt, F.J.

    2009-01-01

    Nuclear magnetic resonance imaging (MRI) is a non-destructive and non-invasive technique that can be used to acquire two- or even three-dimensional images of intact plants. The information within the images can be manipulated and used to study the dynamics of plant water relations and water transport in the stem, e.g., as a function of environmental (stress) conditions. Non-spatially resolved portable NMR is becoming available to study leaf water content and distribution of water in different...

  6. Quantitative plant ecology

    DEFF Research Database (Denmark)

    Damgaard, Christian

    2014-01-01

    statistical modelling of plant species abundance and the relevant ecological processes that control species abundance. The focus on statistical modelling and likelihood function based methods also means that more algorithm based methods, e.g. ordination techniques and boosted regression tress, will not be......This e-book is written in the Wolfram' CDF format (download free CDF player from Wolfram.com) The objective of this e-book is to introduce the population ecological concepts for measuring and predicting the ecological success of plant species. This will be done by focusing on the measurement and...

  7. Conceptualizing Pharmaceutical Plants

    DEFF Research Database (Denmark)

    Larsen, Bent Dalgaard; Jensen, Klaes Ladeby; Gjøl, Mikkel

    2006-01-01

    In the conceptual design phase of pharmaceutical plants as much as 80%-90% of the total cost of a project is committed. It is therefore essential that the chosen concept is viable. In this design process configuration and 3D models can help validate the decisions made. Designing 3D models is a...... complex task and requires skilled users. We demonstrate that a simple 2D/3D configuration tool can support conceptualizing of pharmaceutical plants. Present paper reports on preliminary results from a full scale implementation project at a Danish engineering company....

  8. Thermodynamic solar plants

    International Nuclear Information System (INIS)

    The thermodynamic solar plants include all techniques aiming at converting the solar radiation into high temperature heat, and then at converting this heat into mechanical or electrical energy through a thermodynamic cycle connected to a power generator. The first step, capture of the solar radiation, requires the use of optical systems and, in most cases, the use of solar concentrators which allow to reach temperatures above 250 deg. C. The hybridization with another heat generation source (fossil or biomass) allows to increase the availability of the solar facilities. The heat is then converted into electricity using classical thermodynamic cycles with efficiencies ranging from 23% to 50%, and above in the case of combined cycles. The immediate efficiency of solar-electricity conversion is comprised between 20% and 30% depending on the technology implemented, and the investment costs are evaluated between 2800 euro/kWe (20-80 MWe plant with cylindro-parabolic collectors and Rankine cycle) and 4000 euro/KWe (40-200 MWe tower plant with combined cycles) but can reach 14000 euro/kWe in the case of a 10-25 kWe parabola-Stirling decentralized plant. The electricity cost ranges from 0.16 to 0.24 euro/kWhe for a big facility and is of about 0.30 euro/kWhe in the case of a parabola-Stirling plant (to be compared with 0.04 euro/kWe in the case of a nuclear power plant). The environmental impact of solar thermal electricity is lower than 20 kg CO2/MWhe and comparable to the impact of hydro or nuclear power (4 and 6 kg CO2/MWhe, respectively), but much lower than the impact of photovoltaic energy (100 kg CO2/MWhe) or coal combustion (900 kg CO2/MWhe). The time of return on energy (duration of plant operation to produce the energy needed for its fabrication) is of only 5 months and the lifetime of solar concentration facilities is estimated to 25-30 years. This article presents the state-of-the-art of solar plant technologies and their economic aspects (market penetration

  9. Power plant process computer

    International Nuclear Information System (INIS)

    The concept of instrumentation and control in nuclear power plants incorporates the use of process computers for tasks which are on-line in respect to real-time requirements but not closed-loop in respect to closed-loop control. The general scope of tasks is: - alarm annunciation on CRT's - data logging - data recording for post trip reviews and plant behaviour analysis - nuclear data computation - graphic displays. Process computers are used additionally for dedicated tasks such as the aeroball measuring system, the turbine stress evaluator. Further applications are personal dose supervision and access monitoring. (orig.)

  10. Nuclear reactor plant

    International Nuclear Information System (INIS)

    The plant consists mainly of a steam-raising unit and a steam turbine with high pressure and low pressure stages. There is at least one superheater or intermediate superheater between the steam-raising unit and the low pressure stage. In order to improve the plant efficiency, a high temperature reactor is provided as a source of heat for the superheater or intermediate superheater, which supplies the superheater heat with an energy efficiency of over 60%. This increases the overall net efficiency from 33% to over 36%. (orig.)

  11. Quantitative plant ecology

    DEFF Research Database (Denmark)

    Damgaard, Christian

    2014-01-01

    This e-book is written in the Wolfram' CDF format (download free CDF player from Wolfram.com) The objective of this e-book is to introduce the population ecological concepts for measuring and predicting the ecological success of plant species. This will be done by focusing on the measurement and...... statistical modelling of plant species abundance and the relevant ecological processes that control species abundance. The focus on statistical modelling and likelihood function based methods also means that more algorithm based methods, e.g. ordination techniques and boosted regression tress, will not be...

  12. Integrated Gasification SOFC Plant with a Steam Plant

    DEFF Research Database (Denmark)

    Rokni, Masoud; Pierobon, Leonardo

    2011-01-01

    steam plant is presented and studied. The plant is called as IGSS (Integrated Gasification SOFC Steam plant). Different systems layouts are presented and investigated. Electrical efficiencies up to 56% are achieved which is considerably higher than the conventional integrated gasification combined......A hybrid Solid Oxide Fuel Cell (SOFC) and Steam Turbine (ST) plant is integrated with a gasification plant. Wood chips are fed to the gasification plant to produce biogas and then this gas is fed into the anode side of a SOFC cycle to produce electricity and heat. The gases from the SOFC stacks...... enter into a burner to burn the rest of the fuel. The offgases after the burner are now used to generate steam in a Heat Recovery Steam Generator (HRSG). The generated steam is expanded in a ST to produce additional power. Thus a triple hybrid plant based on a gasification plant, a SOFC plant and a...

  13. Apoplastic interactions between plants and plant root intruders

    Directory of Open Access Journals (Sweden)

    Kanako eMitsumasu

    2015-08-01

    Full Text Available Numerous pathogenic or parasitic organisms attack plant roots to obtain nutrients, and the apoplast including the plant cell wall is where the plant cell meets such organisms. Root-parasitic angiosperms and nematodes are two distinct types of plant root parasites but share some common features in their strategies for breaking into plant roots. Striga and Orobanche are obligate root parasitic angiosperms that cause devastating agricultural problems worldwide. Parasitic plants form an invasion organ called a haustorium, where plant cell wall degrading enzymes (PCWDEs are highly expressed. Plant-parasitic nematodes are another type of agriculturally important plant root parasite. These nematodes breach the plant cell walls by protruding a sclerotized stylet from which PCWDEs are secreted. Responding to such parasitic invasion, host plants activate their own defense responses against parasites. Endoparasitic nematodes secrete apoplastic effectors to modulate host immune responses and to facilitate the formation of a feeding site. Apoplastic communication between hosts and parasitic plants also contributes to their interaction. Parasitic plant germination stimulants, strigolactones (SLs, are recently identified apoplastic signals that are transmitted over long distances from biosynthetic sites to functioning sites. Here, we discuss recent advances in understanding the importance of apoplastic signals and cell walls for plant-parasite interactions.

  14. Plant Tissue Culture Studies.

    Science.gov (United States)

    Smith, Robert Alan

    Plant tissue culture has developed into a valid botanical discipline and is considered a key area of biotechnology, but it has not been a key component of the science curriculum because of the expensive and technical nature of research in this area. This manual presents a number of activities that are relatively easy to prepare and perform. The…

  15. Plants and Medicinal Chemistry

    Science.gov (United States)

    Bailey, D.

    1977-01-01

    This is the first of two articles showing how plants that have been used in folk medicine for many centuries are guiding scientists in the design and preparation of new and potent drugs. Opium and its chemical derivatives are examined at length in this article. (Author/MA)

  16. Pinellas Plant facts

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1990-11-01

    The Pinellas Plant, near St. Petersburg, Florida, is wholly owned by the United States Government. It is operated for the Department of Energy (DOE) by GE Aerospace, Neutron Devices (GEND). This plant was built in 1956 to manufacture neutron generators, a principal component in nuclear weapons. The neutron generators built at Neutron Devices consist of a miniaturized linear ion accelerator assembled with the pulsed electrical power supplies required for its operation. Production of these devices has necessitated the development of several uniquely specialized areas of competence and supporting facilities. The ion accelerator, or neutron tube, requires ultra clean, high vacuum technology; hermetic seals between glass, ceramic, glass-ceramic, and metal materials; plus high voltage generation and measurement technology. The existence of these capabilities at Neutron Devices has led directly to the assignment of other weapon application products: the lightning arrester connector, specialty capacitor, vacuum switch, and crystal resonator. Other product assignments such as active and reserve batteries and the radioisotopically-powered thermoelectric generator evolved from the plant`s materials measurement and controls technologies which are required to ensure neutron generator life.

  17. Plant Hormone Binding Sites

    OpenAIRE

    Napier, Richard

    2004-01-01

    • Aims Receptors for plant hormones are becoming identified with increasing rapidity, although a frustrating number remain unknown. There have also been many more hormone‐binding proteins described than receptors. This Botanical Briefing summarizes what has been discovered about hormone binding sites, their discovery and descriptions, and will not dwell on receptor functions or activities except where these are relevant to understand binding.

  18. Mechanisms in Plant Development

    Energy Technology Data Exchange (ETDEWEB)

    Hake, Sarah [USDA ARS Plant Gene Expression Center

    2013-08-21

    This meeting has been held every other year for the past twenty-two years and is the only regularly held meeting focused specifically on plant development. Topics covered included: patterning in developing tissues; short and long distance signaling; differentiation of cell types; the role of epigenetics in development; evolution; growth.

  19. Phenolics and Plant Allelopathy

    Directory of Open Access Journals (Sweden)

    De-An Jiang

    2010-12-01

    Full Text Available Phenolic compounds arise from the shikimic and acetic acid (polyketide metabolic pathways in plants. They are but one category of the many secondary metabolites implicated in plant allelopathy. Phenolic allelochemicals have been observed in both natural and managed ecosystems, where they cause a number of ecological and economic problems, such as declines in crop yield due to soil sickness, regeneration failure of natural forests, and replanting problems in orchards. Phenolic allelochemical structures and modes of action are diverse and may offer potential lead compounds for the development of future herbicides or pesticides. This article reviews allelopathic effects, analysis methods, and allelopathic mechanisms underlying the activity of plant phenolic compounds. Additionally, the currently debated topic in plant allelopathy of whether catechin and 8-hydroxyquinoline play an important role in Centaurea maculata and Centaurea diffusa invasion success is discussed. Overall, the main purpose of this review is to highlight the allelopacthic potential of phenolic compounds to provide us with methods to solve various ecology problems, especially in regard to the sustainable development of agriculture, forestry, nature resources and environment conservation.

  20. B Plant hazards assessment

    International Nuclear Information System (INIS)

    This document establishes the technical basis in support of Emergency Planning Activities for B Plant on the Hanford Site. The document represents an acceptable interpretation of the implementing guidance document for DOE Order 5500.3A. Through this document, the technical basis for the development of facility specific , Emergency Action Levels and the Emergency Planning Zone is demonstrated

  1. Nuclear plant scram reduction

    International Nuclear Information System (INIS)

    The Nuclear Utility Management and Human Resources Committee (NUMARC) is a confederation of all 55 utilities with nuclear plants either in operation or under construction. NUMARC was formed in April 1984 by senior nuclear executives with hundreds of man-years of plant experience to improve (plant) performance and resolve NRC concerns. NUMARC has adopted 10 commitments in the areas of management, training, staffing and performance. One of these commitments is to strive to reduce automatic trips to 3 per year per unit for calendar year 1985 for plants in commercial operation greater than 3 years (with greater than 25% capacity factor). This goal applies to any unplanned automatic protection system trips at any time when the reactor is critical. Each utility has committed to develop methods to thoroughly evaluate all unplanned automatic trips to identify the root causes and formulate plans to correct the root causes thus reducing future unplanned scrams. As part of this program, the Institute of Nuclear Power Operations (INPO) collects and evaluates information on automatic reactor trips. It publishes the results of these evaluations to aid the industry to identify root causes and corrective actions

  2. Plant research '76

    Energy Technology Data Exchange (ETDEWEB)

    1976-01-01

    Overall objective remains unchanged: to contribute to the knowledge, with strong emphasis on fundamental problems, of how plants function, the roles they play in the environment and energy relations of the world, and how these roles may be optimized for the benefit of mankind. (PCS)

  3. Radiosensitivity in plants

    International Nuclear Information System (INIS)

    The report presents a compilation of available data on the sensitivity of plants to ionizing radiation, and provides basic information on methods of determining such sensitivities, or of estimating radiosensitivities by calcuation of the nuclear factors upon which they depend. The scope of the data presented here is necessarily limited to the most generally useful radiobiological end points and to the most commonly-used types of radiation. Many of the factors which influence radiosensitivity, particularly nuclear factors, will be discussed. Emphasis will be upon whole-plant studies done at Brookhaven National Laboratory by A.H. Sparrow and his associates, since these studies are the source of most of the available radiosensitivity data and of all the sensitivity predictions listed here. Data presented here include summaries of experimentally-determined radiosensitivities at various end points for both herbaceous and woody higher plants, and for a few species of ferns and lower plants. The algae and fungi have not been considered here due to space limitations

  4. Radiosensitivity in plants

    Energy Technology Data Exchange (ETDEWEB)

    Nauman, A F

    1979-01-01

    The report presents a compilation of available data on the sensitivity of plants to ionizing radiation, and provides basic information on methods of determining such sensitivities, or of estimating radiosensitivities by calcuation of the nuclear factors upon which they depend. The scope of the data presented here is necessarily limited to the most generally useful radiobiological end points and to the most commonly-used types of radiation. Many of the factors which influence radiosensitivity, particularly nuclear factors, will be discussed. Emphasis will be upon whole-plant studies done at Brookhaven National Laboratory by A.H. Sparrow and his associates, since these studies are the source of most of the available radiosensitivity data and of all the sensitivity predictions listed here. Data presented here include summaries of experimentally-determined radiosensitivities at various end points for both herbaceous and woody higher plants, and for a few species of ferns and lower plants. The algae and fungi have not been considered here due to space limitations.

  5. Rethinking Tree Planting.

    Science.gov (United States)

    Kock, Henry

    1994-01-01

    This author contends that observing and understanding natural succession is far more valuable to students than memories of planting lonely seedlings in a schoolyard. An approach that provides a richer experience using an holistic approach to habitat restoration is explored. (LZ)

  6. Recombinant Cytokines from Plants

    Czech Academy of Sciences Publication Activity Database

    Sirko, A.; Vaněk, Tomáš; Gora-Sochacka, A.; Redkiewicz, P.

    2011-01-01

    Roč. 12, č. 6 (2011), s. 3536-3552. ISSN 1661-6596 Institutional research plan: CEZ:AV0Z50380511 Keywords : cytokines * pharmaceutical proteins * plant-based production systems Subject RIV: EB - Genetics ; Molecular Biology Impact factor: 2.598, year: 2011

  7. Chromosome painting in plants.

    NARCIS (Netherlands)

    Schubert, I.; Fransz, P.F.; Fuchs, J.; Jong, de J.H.

    2001-01-01

    The current 'state-of-art' as to chromosome painting in plants is reviewed. We define different situations described as painting so far: i) Genomic in situ hybridisation (GISH) with total genomic DNA to distinguish alien chromosomes on the basis of divergent dispersed repeats, ii) 'Chromosomal in si

  8. Plants flex their skeletons

    DEFF Research Database (Denmark)

    Foster, Randy; Mattsson, Ole; Mundy, John

    2003-01-01

    Recent work on the fragile fiber mutants of Arabidopsis has identified microtubule-associated proteins that affect the orientation of cellulose microfibrils in cell walls, a major determinant of plant elongation growth. These same proteins are implicated in responses to gibberellin, provoking fresh...

  9. Nuclear Power Plant Technician

    Science.gov (United States)

    Randall, George A.

    1975-01-01

    The author recognizes a body of basic knowledge in nuclear power plant technoogy that can be taught in school programs, and lists the various courses, aiming to fill the anticipated need for nuclear-trained manpower--persons holding an associate degree in engineering technology. (Author/BP)

  10. Plant Modernization Programs

    International Nuclear Information System (INIS)

    Most nuclear plants were designed and built from the 1960's through the 1990's. These plants employ predominantly analog instrumentation and control (I and C) technology, and their control rooms are made up of primarily hardwired controls (e.g., switches, knobs and handles) and displays (e.g., gauges, linear scales and indicator lights). Over the past several years, these plants have been modernized with digital I and C and computer-based human-system interfaces (HSIs) such as software-based process controls, touch-screen interfaces and large-screen, overview displays. As these computer based HIS technologies are integrated into control rooms based on conventional technology, hybrid control rooms are created. The paper summarizes lessons learned from the study of plant modernization programs over the past ten years so that they can be used to help improve the modification process. While the research focused on the impact of technology change on human performance, a number of organizational and programmatic issues were observed as well. Eleven lessons learned are presented

  11. Plant redox proteomics

    DEFF Research Database (Denmark)

    Navrot, Nicolas; Finnie, Christine; Svensson, Birte;

    2011-01-01

    PTMs in regulating enzymatic activities and controlling biological processes in plants. Notably, proteins controlling the cellular redox state, e.g. thioredoxin and glutaredoxin, appear to play dual roles to maintain oxidative stress resistance and regulate signal transduction pathways via redox PTMs...

  12. Garigliano nuclear power plant

    International Nuclear Information System (INIS)

    During the period under review, the Garigliano power station produced 1,028,77 million kWh with a utilization factor of 73,41% and an availability factor of 85,64%. The disparity between the utilization and availability factors was mainly due to a shutdown of about one and half months owing to lack of staff at the plant. The reasons for nonavailability (14.36%) break down as follows: nuclear reasons 11,49%; conventional reasons 2,81%; other reasons 0,06%. During the period under review, no fuel replacements took place. The plant functioned throughout with a single reactor reticulation pump and resulting maximum available capacity of 150 MWe gross. After the month of August, the plant was operated at levels slightly below the maximum available capacity in order to lengthen the fuel cycle. The total number of outages during the period under review was 11. Since the plant was brought into commercial operation, it has produced 9.226 million kWh

  13. Plants on the Move

    Science.gov (United States)

    Bricker, Mary

    2009-01-01

    When it comes to directly interacting with and doing experiments with organisms, plants have some distinct advantages over animals. Their diversity and accessibility allows students to use them in experiments, thus practicing important science inquiry skills. This article describes an investigation that was designed to help students appreciate the…

  14. [Spuriously healthy plant fats].

    Science.gov (United States)

    Cichosz, Grazyna; Czeczot, Hanna

    2011-10-01

    Since long plant fats are considered by nutritionists, dieticians and doctors, as main source of essential unsaturated fatty acids) n-6 and n-3 in human diet. On the market there is plenty of oils that can be consumed directly or used to frying. Last four decades consumption of oils increased several times due to stimulated by advertisement popularization of their pro-health activity. Plant oils supply mostly multi unsaturated fatty acids n-6 excess of which disadvantageously influence human health. Determinations of changes of oxidative stability of plant fats (during processing and storage) proved that consumption of oxidation products of fatty acids and sterols may be a reason of various diseases. Both epidemiologic and clinic studies indicated that if plant fats (both oils except this from olives and margarines) have possessed pro-health properties, their several times increased consumption would liquidate the problem of arteriosclerosis and its clinical complications (heart attack, stroke). For the present, every second death in the industrial countries results from the cardiovascular disease. Morbidity of cancer is also increasing and of neurological and neurodegenerative diseases is growing up vigorously. PMID:22097183

  15. Egg Processing Plant Sanitation

    Science.gov (United States)

    Hazard analysis and critical control programs (HACCP) will eventually be required for commercial shell egg processing plants. Sanitation is an essential prerequisite program for HACCP and is based upon current Good Manufacturing Practices (cGMPs) as listed in the Code of Federal Regulations. Good ...

  16. T Plant hazards assessment

    International Nuclear Information System (INIS)

    This document establishes the technical basis in support of Emergency Planning activities for the T Plant on the Hanford Site. The document represents an acceptable interpretation of the implementing guidance document for DOE ORDER 5500.3A. Through this document, the technical basis for the development of facility specific Emergency Action Levels and the Emergency Planning Zone is demonstrated

  17. Power plant at sea

    International Nuclear Information System (INIS)

    Drilling platforms are rather inefficient when it comes to their own power supply. In view of ecotax and their environmental image, the offshore industry particularly the Norwegians is highly committed to changing this situation. An efficient power plant, specially designed for the offshore industry, might just prove to be the answer to their prayers

  18. Planting for Wildlife.

    Science.gov (United States)

    Dawson, Chad P.; Decker, Daniel J.

    1979-01-01

    Songbirds and small mammals can be encouraged to visit and live in residential yards if structures such as bird feeders and birdbaths are provided and if vegetation is planted to provide basic requirements of wildlife habitat. Examples and instructions are provided. (RE)

  19. Plant operation monitor

    International Nuclear Information System (INIS)

    An operation monitor for a neutron injection device comprises a transmission time zone control means for judging, determining and outputting a transmission enabling time and a transmission disabling time by operation cycle data and a standard timing, and a operation value transmission control means for demanding operation value transmission only during the transmission enabling time. The transmission time zone control means judges and controls the time zone for changing the plant operation value and changes the operation value only when the plant is in a stand-by state and transmission is possible. The operation value is not changed during operation. Since transmission is conducted while avoiding the plant operation period in which the computer load is great, the load is dispersed. Since it is not necessary for an operator to pay attention separately to a plant operation period or a stand-by state and he can always demand an operation value change, time control is easy and operator's psychological burden is reduced. (N.H.)

  20. Plant Protection Research Institute

    Directory of Open Access Journals (Sweden)

    N. Allsopp

    1993-12-01

    Full Text Available A survey of the mycorrhizal status of plants growing in the Cape Floristic Region of South Africa was undertaken to assess the range of mycorrhizal types and their dominance in species characteristic of this region. Records were obtained by ex­amining the root systems of plants growing in three Cape lowland vegetation types, viz. West Coast Strandveld, West Coast Renosterveld and Sand Plain Lowland Fynbos for mycorrhizas, as well as by collating literature records of mycorrhizas on plants growing in the region. The mycorrhizal status of 332 species is listed, of which 251 species are new records. Members of all the important families in this region have been examined. Mycorrhizal status appears to be associated mainly with taxonomic position of the species. Extrapolating from these results, we conclude that 62% of the flora of the Cape Floristic Region form vesicular-arbuscular mycorrhizas, 23% have no mycorrhizas, 8% are ericoid mycorrhizal, 2% form orchid mycorrhizas, whereas the mycorrhizal status of 4% of the flora is unknown. There were no indigenous ectomycor- rhizal species. The proportion of non-mycorrhizal species is high compared to other ecosystems. In particular, the lack of mycorrhizas in several important perennial families in the Cape Floristic Region is unusual. The diversity of nutrient acquir­ing adaptations, including the range of mycorrhizas and cluster roots in some non-mycorrhizal families, may promote co­existence of plants in this species-rich region.

  1. Evolution of plant senescence

    Directory of Open Access Journals (Sweden)

    Young Mike

    2009-07-01

    Full Text Available Abstract Background Senescence is integral to the flowering plant life-cycle. Senescence-like processes occur also in non-angiosperm land plants, algae and photosynthetic prokaryotes. Increasing numbers of genes have been assigned functions in the regulation and execution of angiosperm senescence. At the same time there has been a large expansion in the number and taxonomic spread of plant sequences in the genome databases. The present paper uses these resources to make a study of the evolutionary origins of angiosperm senescence based on a survey of the distribution, across plant and microbial taxa, and expression of senescence-related genes. Results Phylogeny analyses were carried out on protein sequences corresponding to genes with demonstrated functions in angiosperm senescence. They include proteins involved in chlorophyll catabolism and its control, homeoprotein transcription factors, metabolite transporters, enzymes and regulators of carotenoid metabolism and of anthocyanin biosynthesis. Evolutionary timelines for the origins and functions of particular genes were inferred from the taxonomic distribution of sequences homologous to those of angiosperm senescence-related proteins. Turnover of the light energy transduction apparatus is the most ancient element in the senescence syndrome. By contrast, the association of phenylpropanoid metabolism with senescence, and integration of senescence with development and adaptation mediated by transcription factors, are relatively recent innovations of land plants. An extended range of senescence-related genes of Arabidopsis was profiled for coexpression patterns and developmental relationships and revealed a clear carotenoid metabolism grouping, coordinated expression of genes for anthocyanin and flavonoid enzymes and regulators and a cluster pattern of genes for chlorophyll catabolism consistent with functional and evolutionary features of the pathway. Conclusion The expression and phylogenetic

  2. Photooxidative stress in plants

    International Nuclear Information System (INIS)

    The light-dependent generation of active oxygen species is termed photooxidative stress. This can occur in two ways: (1) the donation of energy or electrons directly to oxygen as a result of photosynthetic activity; (2) exposure of tissues to ultraviolet irradiation. The light-dependent destruction of catalase compounds the problem. Although generally detrimental to metabolism, superoxide and hydrogen peroxide may serve useful functions if rigorously controlled and compartmentalised. During photosynthesis the formation of active oxygen species is minimised by a number of complex and refined regulatory mechanisms. When produced, active oxygen species are eliminated rapidly by efficient antioxidative systems. The chloroplast is able to use the production and destruction of hydrogen peroxide to regulate the thermal dissipation of excess excitation energy. This is an intrinsic feature of the regulation of photosynthetic electron transport. Photoinhibition and photooxidation only usually occur when plants are exposed to stress. Active oxygen species are part of the alarm-signalling processes in plants. These serve to modify metabolism and gene expression so that the plant can respond to adverse environmental conditions, invading organisms and ultraviolet irradiation. The capacity of the antioxidative defense system is often increased at such times but if the response is not sufficient, radical production will exceed scavenging and ultimately lead to the disruption of metabolism. Oxidative damage arises in high light principally when the latter is in synergy with additional stress factors such as chilling temperatures or pollution. Environmental stress can modify the photooxidative processes in various ways ranging from direct involvement in light-induced free radical formation to the inhibition of metabolism that renders previously optimal light levels excessive. It is in just such situations that the capacity for the production of active oxygen species can exceed that

  3. We are the logical choice

    International Nuclear Information System (INIS)

    At last year's discussions, the Slovak government approved the possibility of the Czech energy company CEZ building a new nuclear plant in Jaslovske Bohunice. The company's merger and acquisition department head Vladimir Schmalz claims that this is a logical choice. (author)

  4. Decommissioning of uranium conversion plant

    International Nuclear Information System (INIS)

    Since about 20 years have passed after the construction of the uranium conversion plant, most equipments installed have worn out. Liquid wastes stored in lagoons which were generated during the operation of this plant are needed to be treated safely. Therefore, the decommissioning project on the uranium conversion plant was started from 2001. This study is a preliminary step for the decommissioning of the uranium conversion plant. It was reviewed on the plant status overall, especially facility descriptions and operational histories for the installations located inside and outside of the plant and methods of decontamination and of dismantling to the contamination conditions. And some proper options on each main object was proposed

  5. Indigenous plant remedies in Zimbabwe.

    Science.gov (United States)

    Chinemana, F; Drummond, R B; Mavi, S; de Zoysa, I

    1985-01-01

    Two household surveys undertaken in Zimbabwe between 1981 and 1983 revealed extensive use of indigenous plant remedies in the home-management of childhood diarrhoea and many adult illnesses. Names of the local plants, trees and shrubs are listed, together with the part of the plant used and the type of condition treated. The usage of medicinal plants underscores the need for further study of indigenous pharmacopoeias and the therapeutic properties of plants. The role of indigenous plant remedies within local health care systems is also worthy of closer investigation. PMID:4094463

  6. Autophagy in plants and phytopathogens.

    Science.gov (United States)

    Yoshimoto, Kohki; Takano, Yoshitaka; Sakai, Yasuyoshi

    2010-04-01

    Plants and plant-associated microorganisms including phytopathogens have to adapt to drastic changes in environmental conditions. Because of their immobility, plants must cope with various types of environmental stresses such as starvation, oxidative stress, drought stress, and invasion by phytopathogens during their differentiation, development, and aging processes. Here we briefly describe the early studies of plant autophagy, summarize recent studies on the molecular functions of ATG genes, and speculate on the role of autophagy in plants and phytopathogens. Autophagy regulates senescence and pathogen-induced cell death in plants, and autophagy and pexophagy play critical roles in differentiation and the invasion of host cells by phytopathogenic fungi. PMID:20079356

  7. Top 10 Plant Viruses in Molecular Plant Pathology

    Science.gov (United States)

    Scientific and economic importance were used to rank plant viruses to indicate the Top 10. Each virus is discussed to open debate and conversation within and beyond the plant virology community as new pathogens come and go in importance....

  8. Evaluating plant and plant oil repellency against the sweetpotato whitefly

    Science.gov (United States)

    The sweetpotato whitefly, Bemisia tabaci is a major insect pest of vegetables world-wide. We evaluated the effect of commercial plant oils – garlic oil, hot pepper wax, and mustard oil against B. tabaci. Cucumber plants served as the control. Additional treatments included no plants or oil (clear ai...

  9. Convergence of plant-rich and plant-only diets.

    Science.gov (United States)

    Dwyer, J

    1999-09-01

    Discussants at the Third International Congress on Vegetarian Nutrition considered the nutritional adequacy, benefits, and health outcomes of plant-only (e.g., vegan and fruitarian), plant-based (e.g., macrobiotic, lactovegetarian, semivegetarian, and meatless), and omnivorous dietary patterns. The increased availability of a variety of plant foods, the advent of nutrient-fortified plant foods, the use of vitamin and mineral supplements, and the widespread dissemination of sound information on dietary patterns mean that convergence between the essential nutrient profiles of plant-only and plant-rich, plant-based diets is possible. Special attention should be paid to nutrition among vulnerable groups by age or physiologic status if they consume diets based solely on plants. Research has shown that both plant-only and plant-based eating patterns have health benefits, most notably in reducing the risk of chronic, degenerative diseases. The panel concluded that evidence for a convergence of scientific opinion on the safety and healthfulness of plant-only diets that are appropriately planned to meet all nutrient requirements compared with plant-based diets is considerable. PMID:10479241

  10. 7 CFR 1033.7 - Pool plant.

    Science.gov (United States)

    2010-01-01

    ... its route distribution in this marketing area for 3 consecutive months or if the plant is required to... 7 Agriculture 9 2010-01-01 2009-01-01 true Pool plant. 1033.7 Section 1033.7 Agriculture... Handling Definitions § 1033.7 Pool plant. Pool plant means a plant, unit of plants, or system of plants...

  11. 7 CFR 1030.7 - Pool plant.

    Science.gov (United States)

    2010-01-01

    ... its route distribution in this marketing area for 3 consecutive months or if the plant is required to... 7 Agriculture 9 2010-01-01 2009-01-01 true Pool plant. 1030.7 Section 1030.7 Agriculture... Handling Definitions § 1030.7 Pool plant. Pool plant means a plant, unit of plants, or system of plants...

  12. 7 CFR 1032.7 - Pool plant.

    Science.gov (United States)

    2010-01-01

    ... a majority of its route distribution in this marketing area for 3 consecutive months or if the plant... 7 Agriculture 9 2010-01-01 2009-01-01 true Pool plant. 1032.7 Section 1032.7 Agriculture... Handling Definitions § 1032.7 Pool plant. Pool plant means a plant, unit of plants, or system of plants...

  13. TRIBAL MEDICINAL PLANTS OF CHITTOOR

    OpenAIRE

    Vedavathy, S.; Sudhakar, A; Mrdula, V.

    1997-01-01

    Medicinal plants used in tribal medicine from chittoor district have been surveyed and documented systematically. The paper deals with 202 medicinal plants, indexed along with important tribal applications for the cure of various ailments.

  14. Emission Facilities - Air Emission Plants

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Represents the Primary Facility type Air Emission Plant (AEP) point features. Air Emissions Plant is a DEP primary facility type related to the Air Quality Program....

  15. [Alfalfa Planting as weed control

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document is a letter to farming cooperators regarding the stipulations surrounding alfalfa plantings in lieu of small grain plantings to provide weed control,...

  16. Interactions between plants and microorganisms

    Science.gov (United States)

    Allelopathic microorganisms comprise rhizobacteria and fungi that colonize the surfaces of plant roots, and produce and release phytotoxic metabolites, similar to allelochemicals, that detrimentally affect growth of their host plants. The allelopathic microorganisms are grouped separately from typic...

  17. Teaching Tips: Plant Tissue Testing.

    Science.gov (United States)

    Osborne, Ed

    1991-01-01

    Plant tissue testing can be done to monitor plant nutrition levels during the growing season and diagnose nutrient deficiency problems. They can provide feedback on crop conditions and fertility needs. (Author)

  18. Initiative against nuclear power plants

    International Nuclear Information System (INIS)

    This publication of the Initiative of Austrian Nuclear Power Plant Opponents contains articles on radiactive waste dispoasal in Austria and and discusses safety issues of the nuclear power plant 'Zwentendorf'. (kancsar)

  19. Nuclear power plant risk management

    International Nuclear Information System (INIS)

    This book collects papers on nuclear plant risk management. Topics include: basic concepts in risk analysis and decision theory; establishing integrated plant models; core and containment response; and site modeling and consequences

  20. Aeolian sand ripples around plants.

    Science.gov (United States)

    Zhang, Qian-Hua; Miao, Tian-De

    2003-05-01

    Plants in the desert may locally change the aeolian process, and hence the pattern of sand ripples traveling nearby. The effect of plants on ripples is investigated using a coupled map lattice model with nonuniform coupling coefficients. PMID:12786143

  1. Protecting Yourself from Poisonous Plants

    Science.gov (United States)

    ... NIOSH NIOSH Fast Facts: Protecting Yourself from Poisonous Plants Language: English Español (Spanish) Kreyol Haitien (Hatian Creole) ... outdoors is at risk of exposure to poisonous plants, such as poison ivy, poison oak, and poison ...

  2. Improving performance of operating plants

    International Nuclear Information System (INIS)

    The National Academy for Training sets high standards for nuclear plant training. At the same time, the Academy is structured to give utilities and plants the flexibility and independence to conduct their training the best way they see fit. The industry feels that training is best conducted as close to the plant as possible. Regional or national training centers would not be as effective. Every plant is different, and every plant's operators need to train on a plant-specific simulator. Recurrent or requalification training is best conducted at the plant. Also, if a plant is responsible for its own training, on-the-job training can be integrated with class-room studies more effectively

  3. The German reprocessing plant

    International Nuclear Information System (INIS)

    On February 4, 1985, the shareholders of the Deutsche Gesellschaft fuer Wiederaufarbeitung von Kernbrennstoffen (DWK) decided in favor of building the planned WA-350 reprocessing plant on the site of Wackersdorf, Upper Palatinate, Lower Bavaria. It is to ensure an average annual throughput of 350 te of spent nuclear fuel and is to be equipped with a fuel element receiving storage facility of 1500 te. All highly radioactive areas of the plant will have remote maintenance and repair facilities. DWK chose a consortium of construction firms led by Kraftwerk Union (KWU), the other members of which are Uhde, Lurgi, Kraftanlagen Heidelberg, NUKEM, and the builders' consortium of Hochtief, Dyckerhoff and Widmann, and Heitkamp. The contract volume is DM 5.2 billion (at 1984 prices). Construction will begin in the summer of 1985. All expert opinions have meanwhile been filed with the licensing autorities. ''Cold'' commissioning has been scheduled for 1993, ''hot'' commissioning for 1995. (orig.)

  4. Nuclear turbine power plant

    International Nuclear Information System (INIS)

    Purpose : To improve the heat cycle balance in a nuclear turbine power plant or the like equipped with a moisture separating and reheating device, by eliminating undesired overcooling of the drains in the pipes of a heat transmission pipe bundle. Constitution : A high pressure turbine is driven by main steams from a steam generator. The steams after driving the high pressure turbine are removed with moistures by way of a moisture separator and then re-heated. Extracted steams from the steam generator or the high pressure turbine are used as a heating source for the reheating. In the nuclear turbine power plant having such a constitution, a vessel for separating the drains and the steams resulted from the heat exchange is provided at the outlet of the reheating device and the steams in the vessel are introduced to the inlet of the moisture separator. (Aizawa, K.)

  5. Ces plantes qui purifient

    OpenAIRE

    Garreta, Raphaële

    2007-01-01

    Dans l’immense évantail de la floremédicinale, il est un ensemble de plantes, dites dépuratives, dont l'importance a été mise en évidence dans les travaux sur la pharmacopée populaire. Dans L'Herbe qui renouvelle (1987), Pierre Lieutaghi montre qu'elles représentent un cinquième des plantes médicinales utilisées en haute Provence, dans le milieu rural où son étude a été menée. Il souligne aussi que « [...] pour beaucoup d'informateurs, cette qualification du remède suffit à désigner les usage...

  6. Lunar Influence On Plants

    Science.gov (United States)

    Schad, Wolfgang

    Concerning lunar periodicity in biology, we summarized all what has been observationally and experimentally found and published in scientific literature till 1996. We summoned up as many as about 600 living species (mostly animals) with identified lunar periodicities, functioning in a more or less endogenous manner. Here we give a short review about the occurrence in the plant kingdom. In Thallophytes 45 species have been described as well as 40 species of Angiosperms. In Prokaryonts no lunar rhythms could be found. Their individual life cycles do not reach the time span of at least comparable parts of a lunar day. Thus as in all Eukaryonts the occurrence of the cell nucleus constitutes specifically ndogenous rhythms in plants as well as in the animal kingdom.

  7. Plant sex chromosome evolution.

    Science.gov (United States)

    Charlesworth, Deborah

    2013-01-01

    It is now well established that plants have an important place in studies of sex chromosome evolution because of the repeated independent evolution of separate sexes and sex chromosomes. There has been considerable recent progress in studying plant sex chromosomes. In this review, I focus on how these recent studies have helped clarify or answer several important questions about sex chromosome evolution, and I shall also try to clarify some common misconceptions. I also outline future work that will be needed to make further progress, including testing some important ideas by genetic, molecular, and developmental approaches. Systems with different ages can clearly help show the time course of events during changes from an ancestral co-sexual state (hermaphroditism or monoecy), and I will also explain how different questions can be studied in lineages whose dioecy or sex chromosomes evolved at different times in the past. PMID:23125359

  8. Integrated turbomachine oxygen plant

    Science.gov (United States)

    Anand, Ashok Kumar; DePuy, Richard Anthony; Muthaiah, Veerappan

    2014-06-17

    An integrated turbomachine oxygen plant includes a turbomachine and an air separation unit. One or more compressor pathways flow compressed air from a compressor through one or more of a combustor and a turbine expander to cool the combustor and/or the turbine expander. An air separation unit is operably connected to the one or more compressor pathways and is configured to separate the compressed air into oxygen and oxygen-depleted air. A method of air separation in an integrated turbomachine oxygen plant includes compressing a flow of air in a compressor of a turbomachine. The compressed flow of air is flowed through one or more of a combustor and a turbine expander of the turbomachine to cool the combustor and/or the turbine expander. The compressed flow of air is directed to an air separation unit and is separated into oxygen and oxygen-depleted air.

  9. Powder detergents production plant

    Directory of Open Access Journals (Sweden)

    Stanković Mirjana S.

    2003-01-01

    Full Text Available The IGPC Engineering Department designed basic projects for powder detergent production plant, using technology developed in the IGPC laboratories, in 1998. - 2000. Several projects were completed: technological, machine, electrical, automation. On the basis of these projects, a production plant with a capacity of 25,000 t/y was manufactured, at "Delta In", Zrenjanin, in 2000.This technology was an innovation, because new approach in mixing a powder materials was used, as well as introducing a new type of dryer in detergent production. The product meets all quality demands for detergents with high specific weight (1000 g/l, as well as environmental regulations. The detergent production process is fully automatized, and the product has uniform quality. There is no waste material in detergent zeolite production, because all products with unsatisfactory quality are returned to the process. The production process can be controlled manually, which is necessary during start-up, and repairs.

  10. Nuclear power plant

    International Nuclear Information System (INIS)

    Purpose: To suppress corrosion at the inner surfaces of equipments and pipeways in nuclear power plants. Constitution: An injection device comprising a chemical injection tank and a plunger type chemical injection pump for injecting hydrazine as an oxygen remover and ammonia as a pH controller is disposed to the downstream of a condensate desalter column for primary coolant circuits. Since dessolved oxygen in circuit water injected with these chemicals is substantially reduced to zero and pH is adjuted to about 10 - 11, occurrence of stress corrosion cracks in carbon steels and stainless steels as main constituent materials for the nuclear power plant and corrosion products are inhibited in high temperature water, and of corrosion products are inhibited from being introduced as they are through leakage to the reactor core, by which the operators' exposure does can be decreased significantly. (Sekiya, K.)

  11. The Chernobyl plant shutdown

    International Nuclear Information System (INIS)

    The Chernobylsk-1 reactor, operational in september 1977 has been stopped in november 1996; the Chernobylsk-2 reactor started in november 1978 is out of order since 1991 following a fire. The Chernobylsk-3 reactor began in 1981. During the last three years it occurs several maintenance operations that stop it. In june 2000, the Ukrainian authorities decided to stop it definitively on the 15. of december (2000). This file handles the subject. it is divided in four chapters: the first one gives the general context of the plant shutdown, the second chapter studies the supporting projects to stop definitively the nuclear plant, the third chapter treats the question of the sarcophagus, and the fourth and final chapter studies the consequences of the accident and the contaminated territories. (N.C.)

  12. Dry alcohol production plant

    Directory of Open Access Journals (Sweden)

    Stanković Mirjana S.

    2003-01-01

    Full Text Available The IGPC Engineering Department designed basic projects for dry alcohol production plant, using technology developed in the IGPC laboratories. Several projects were completed: technological, machine, electrical, automation. On the basis of these projects a production plant with a capacity of 40 m3/y was manufactured, at "Zorka Pharma", Šabac in 1995-1996. The product meets all quality demands, as well as environmental regulations. The dry alcohol production process is fully automatized. There is no waste in the process, neither gaseous, nor liquid. The chosen process provides safe operation according to temperature regime and resistance in the pipes, air purification columns and filters. Working at increased pressure is suitable for evaporation and condensation at increased temperatures. The production process can be controlled manually, which is necessary during start-up, and repairs.

  13. Flavonols drive plant microevolution.

    Science.gov (United States)

    Grotewold, Erich

    2016-02-01

    The idea that pollinators are in large part responsible for the diversity of flowering plants dates back more than 150 years to Darwin's work, but even modern scientists have struggled to identify specific 'speciation genes' and determine how they influenced flower-pollinator interactions. A new study proposes that a series of mutations in a single gene controlling floral chemicals influenced pollinator preferences, likely resulting in speciation, bringing us closer to finding a speciation gene. PMID:26813762

  14. Nuclear power plants

    International Nuclear Information System (INIS)

    Before the economical adaptability of nuclear power plants was achieved, many ways were tried to technically use nuclear fission. In the course of a selection process, of numerous types of reactors, only a few have remained which are now taking part in the competition. The most important physical fundamentals, the occurence of various reactor concepts and the most important reactor types are the explained. (orig./TK)

  15. Effects on plants

    International Nuclear Information System (INIS)

    Results of experiments with plants on the effects of low-dose and low-dose rates of low LET radiation are reported. Experiments were conducted on the effects of x and gamma radiation on the production of yellow-green sectors in maize leaves, growth inhibition in germinating seeds of barley, survival and bud production in Saintpaulia, tumor formation in Nicotiana, and pink mutations in Tradescantia stamen hair cells

  16. CHOOSING SOLAR PHOTOVOLTAIC PLANT

    OpenAIRE

    Vinnikov A. V.; Denisenko E. A.; Dolobenko D. V.

    2015-01-01

    Promising is the direction and, above all, in matters of energy saving and energy efficiency of Autonomous systems of power supply, the use of renewable sources-newable energy as a major source of energy for consumers in remote areas. Here priority is given to solar energy. Since solar radiation can be change place not only in heat and electrical. The article contains three main structural schematics of electricity supply with solar power plants. The features of their work are disclosed, as w...

  17. Nuclear power plant erection

    International Nuclear Information System (INIS)

    The erection of a nuclear power plant covers all the installation operations related to mechanical and electrical equipment in buildings designed for this specific purpose. Some of these operations are described: erection of the nuclear boiler, erection work carried out in the building accomodating the nuclear auxiliary and ancillary equipment and the methods and the organization set up in order to carry out this work satisfactorily are analyzed

  18. Power plant emissions reduction

    Science.gov (United States)

    Anand, Ashok Kumar; Nagarjuna Reddy, Thirumala Reddy

    2015-10-20

    A system for improved emissions performance of a power plant generally includes an exhaust gas recirculation system having an exhaust gas compressor disposed downstream from the combustor, a condensation collection system at least partially disposed upstream from the exhaust gas compressor, and a mixing chamber in fluid communication with the exhaust gas compressor and the condensation collection system, where the mixing chamber is in fluid communication with the combustor.

  19. Power plants 2002. Lectures

    International Nuclear Information System (INIS)

    Main topics of the meeting: Power economy for the Eastern European countries and their economical growth during overtaking by utilities; climatic change by fossil-fuel power plants; deregulation and competition challenges; cogeneration from fossil fuels and renewable energy sources; research programs for advanced energy systems and problems of certification and regulations; power trade and influence on the operators; air pollution and kyoto protocol and climatic change between policy and engineering tasks. (GL)

  20. Obrigheim nuclear power plant

    International Nuclear Information System (INIS)

    The gross output of the 345MWe pressurized water nuclear power station at Obrigheim, operation on base load, amounted to about 2.57TWh in 1974, the net power fed to the grid being about 2.44TWh. The core was used to its full capacity until 10 May 1974. Thereafter, the reactor was on stretch-out operation with steadily decreasing load until refuelled in August 1974. Plant availability in 1974 amounted to 92.1%. Of the 7.9% non-availability, 7.87% was attributable to the refuelling operation carried out from 16 August to 14 September and to the inspection, overhaul and repair work and the routine tests performed during this period. The plant was in good condition. Only two brief shutdowns occurred in 1974, the total outage time being 21/2 hours. From the beginning of trial operation in March 1969 to the end of 1974, the plant achieved an availability factor of 85.2%. The mean core burnup at the end of the fifth cycle was 19600 MWd/tonne U, with one fuel element that had been used for four cycles achieving a mean burnup of 39000 MWd/tonne U. The sipping test on the fuel elements revealed defective fuel-rods in a prototype plutonium fuel element, a high-efficiency uranium fuel element and a uranium fuel element. The quantities of radioactive substances released to the environment in 1974 were far below the officially permitted values. In july 1974, a reference preparation made up in the nuclear power station in October 1973 was discovered by outsiders on the Obrigheim municipality rubbish tip. The investigations revealed that this reference preparation had very probably been abstracted from the plant in October 1973 and arrived at the rubbish tip in a most irregular manner shortly before its discovery

  1. Plant hormone receptors: new perceptions

    OpenAIRE

    Spartz, Angela K.; William M Gray

    2008-01-01

    Plant growth and development require the integration of a variety of environmental and endogenous signals that, together with the intrinsic genetic program, determine plant form. Central to this process are several growth regulators known as plant hormones or phytohormones. Despite decades of study, only recently have receptors for several of these hormones been identified, revealing novel mechanisms for perceiving chemical signals and providing plant biologists with a much clearer picture of...

  2. The bases of plant introduction

    OpenAIRE

    Karpun Yu N

    2004-01-01

    The main problems of plintroduction are presented as theses. The plants introduction is suggested to regard as process of their cultivation, which has several stages: the mobilization of plant's material, primary test, sec- ond test. The basic terms are offered: introduction point, introduction search, collection number, introduction situation, etc. The peculiarities of plants introduction process are presented. The relationship between native flora and introduction plants are con...

  3. Civil engineering for power plants

    International Nuclear Information System (INIS)

    Power plant structures are conspicuously visible and have an impact on our landscape. In the opinion of a critical public, a successful external design can greatly enhance acceptance of an undertaking and its plants. This paper considers the subjects - utilization of by-products, aggregation of series experience in the construction of nuclear power plants, architecture in power plant construction, water works for adequate cooling water supply and also quality assurance in civil engineering and optimum application of electronic data processing. (orig.)

  4. Endangered vascular plants in Japan

    OpenAIRE

    IWATSUKI, Kunio

    2008-01-01

    The history of the Red List of Japanese vascular plants is briefly reviewed for editing and research. Especially on the results of recent monitoring, the present status of information and conservation activities on the endangered plants in Japan is discussed and the dynamics of the Japanese flora are taken up, in relation to basic research on plant biodiversity on the Japanese Archipelago. The figures of endangered plants are not very variable during the past quarter of a century, but we can ...

  5. Chemical interaction between undamaged plants

    OpenAIRE

    Glinwood, Robert; Ninkovic, Velemir; Pettersson, Jan

    2011-01-01

    Most research on plant–plant chemical interactions has focussed on events following herbivore or pathogen attack. However, undamaged plants also interact chemically as a natural facet of their behaviour, and this may have consequences for insects that use the plants as hosts. In this review, the links between allelopathy and insect behaviour are outlined. Findings on how chemical interactions between different plant species and genotypes affect aphid herbivores and their natural e...

  6. Hormonal crosstalk in plant immunity

    OpenAIRE

    D. Van der Does

    2012-01-01

    The plant hormones salicylic acid (SA), also known as plant aspirin, and jasmonic acid (JA) play major roles in the regulation of the plant immune system. In general, SA is important for defense against pathogens with a biotrophic lifestyle, whereas JA is essential for defense against insect herbivores and pathogens with a necrotrophic lifestyle. Antagonistic and synergistic interactions between the SA- and JA-dependent signaling pathways allow the plant to fine-tune the activation of defense...

  7. Energy balances for power plants

    International Nuclear Information System (INIS)

    An important aspect of a power plant is its energy balance, i.e. the electrical energy produced by the plant over its overall operation period, compared to the amount of non-renewable energy used to create and build the plant. Tense discussions took place in the past between criticizers and promotors of a given technology, some technologies even being accused of having a negative energy balance. Mostly based on built examples the present study aims at giving objective data for the represented technologies, as follows: a 64 MW hydro power plant in the Alps, with seasonal water storage in a lake; a 60 MW run-of-river high-head hydro power plant in the Alps; two run-of-river low-head hydro power plants in the Swiss Midlands (14 MW and 25 MW respectively); a small 30 kW wind power generator located near the Simplon Pass at 2000 m over sea level, in the Alps; a 3 kW photovoltaic generator in the roof of a single-family house; a 500 kW photovoltaic power plant in the Jura, at 1000 m over sea level; a 0.9 MWel/8.8 MWtherm fossil-fuel co-generation plant near Zuerich; a 200 MW natural-gas-fired gas/vapour turbine power plant; a 300 MW heavy-fuel-fired power plant; a 500 MW coal-fired power plant; and the Leibstadt 990 MW nuclear power plant. The best energy balances are obtained for the hydro power plants, the worst for the Leibstadt nuclear power plant. In between the photovoltaic plants and the fossil-fuel-fired plants are found. The figures differ by more than two orders of magnitude

  8. Plants producing biofuels

    Energy Technology Data Exchange (ETDEWEB)

    Papavinasam, S. [Natural Resources Canada, Ottawa, ON (Canada). CANMET Materials Technology Lab

    2009-08-15

    Biofuels are currently produced primarily from five plants, namely corn, canola, sugar cane, palm oil, jatropha. However, research and development efforts are underway around the world produce biofuels from other sources, particularly from algae. This paper described the characteristics of the top 5 plants and their role in the production of biofuels. Countries where these plants are cultivated were also summarized. The article indicated that producing ethanol from corn, is not very efficient since growing corn requires more fertilizer and pesticides than most other crops, plus the corn kernels have to undergo energy-intensive distillation and chemical extraction processes. China is the world's largest producer of rapeseed oil, with an annual production of 12 million tons. The countries of the European Union collectively produce another 16 million tons, of which nearly 4 million tons were used in 2006 to produce biodiesel. Brazil is the world's largest producer of sugar cane, and accounts for about 45 per cent of global ethanol production. Malaysia and Indonesia are the key players in the palm oil market, accounting for 85 per cent of global production. India has identified more than 11 million hectares that would be suitable for growing jatropha, whose seeds contain up to 40 per cent oil that can be burned in a conventional diesel engine after extraction. 1 tab.

  9. Profitability of irradiation plants

    International Nuclear Information System (INIS)

    In any industrial process it is seek an attractive profit from the contractor and the social points of view. The use of the irradiation technology in foods allows keep their hygienically, which aid to food supply without risks for health, an increment of new markets and a losses reduction. In other products -cosmetics or disposable for medical use- which are sterilized by irradiation, this process allows their secure use by the consumers. The investment cost of an irradiation plant depends mainly of the plant size and the radioactive material reload that principally is Cobalt 60, these two parameters are in function of the type of products for irradiation and the selected doses. In this work it is presented the economic calculus and the financial costs for different products and capacities of plants. In general terms is determined an adequate utility that indicates that this process is profitable. According to the economic and commercial conditions in the country were considered two types of credits for the financing of this projects. One utilizing International credit resources and other with national sources. (Author)

  10. Genetics and plant development.

    Science.gov (United States)

    Prunet, Nathanaël; Meyerowitz, Elliot M

    2016-01-01

    There are only three grand theories in biology: the theory of the cell, the theory of the gene, and the theory of evolution. Two of these, the cell and gene theories, originated in the study of plants, with the third resulting in part from botanical considerations as well. Mendel's elucidation of the rules of inheritance was a result of his experiments on peas. The rediscovery of Mendel's work in 1900 was by the botanists de Vries, Correns, and Tschermak. It was only in subsequent years that animals were also shown to have segregation of genetic elements in the exact same manner as had been shown in plants. The story of developmental biology is different - while the development of plants has long been studied, the experimental and genetic approaches to developmental mechanism were developed via experiments on animals, and the importance of genes in development (e.g., Waddington, 1940) and their use for understanding developmental mechanisms came to botanical science much later - as late as the 1980s. PMID:27238367

  11. Power plant design model

    International Nuclear Information System (INIS)

    This paper reports on the Power Plant Design Model (PPDM) which is an interactive FORTRAN/2020 program with over 15,000 lines of code that allows a user to create an engineering model of a grass roots solid fuel-fired facility capable of generating steam for electrical power generation and/or sale. Capital, operating, and maintenance cost estimates of the modeled plant are also generated. The model's technical output contains complete material and energy balances of all major streams, parasitic power calculations, boiler operating data and a major equipment list. The economic output consists of a capital cost estimate for the plant in a spreadsheet format detailing the material, labor and indirect costs associated with each piece of equipment. The model was intended for use as a marketing tool to replace engineering feasibility studies which are needed to determine the viability of a project. The model provides preliminary economics at a fraction of time and manpower effort normally associated with this task

  12. Toluene emissions from plants

    Science.gov (United States)

    Heiden, A. C.; Kobel, K.; Komenda, M.; Koppmann, R.; Shao, M.; Wildt, J.

    The emission of toluene from different plants was observed in continuously stirred tank reactors and in field measurements. For plants growing without stress, emission rates were low and ranged from the detection limit up to 2·10-16 mol·cm-2·s-1. Under conditions of stress, the emission rates exceeded 10-14 mol·cm-2·s-1. Exposure of sunflower (Helianthus annuus L. cv. Gigantheus) to 13CO2 resulted in 13C-labeling of the emitted toluene on a time scale of hours. Although no biochemical pathway for the production of toluene is known, these results indicate that toluene is synthesized by the plants. The emission rates of toluene from sunflower are dependent on nutrient supply and wounding. Since α-pinene emission rates are also influenced by these factors, toluene and α-pinene emissions show a high correlation. During pathogen attack on Scots pines (Pinus sylvestris L.) significant toluene emissions were observed. In this case emissions of toluene and α-pinene also show a good correlation. Toluene emissions were also found in field experiments with pines using branch enclosures.

  13. Wet hydrate dissolution plant

    Directory of Open Access Journals (Sweden)

    Stanković Mirjana S.

    2003-01-01

    Full Text Available The IGPC Engineering Department designed basic projects for a wet hydrate dissolution plant, using technology developed in the IGPC laboratories. Several projects were completed: technological, machine, electrical, automation. On the basis of these projects, a production plant with capacity of 50,000 t/y was manufactured, at "Zeolite Mira", Mira (VE, Italy, in 1997, for increasing detergent zeolite production from 50,000 to 100,000 t/y. Several goals were realized by designing a wet hydrate dissolution plant. Main goal was increasing the detergent zeolite production capacity. The technological cycle of NaOH was closed, and no effluents emitted, and there is no pollution. Wet hydrate dissolution is now fully continuous, which is important for maintaining zeolite production quality, as well as for simplifying production. The wet hydrate production process is fully automatized, and the product has uniform quality. The production process can be controlled manually, which is necessary during start-up, and repairs. By installing additional process equipment (centrifugal pumps and dissolving reactors technological bottlenecks were overcome, and by adjusting NaOH tanks and dissolving reactors, the capacities of the process equipment was fully utilized.

  14. Communal biomass conversion plants

    International Nuclear Information System (INIS)

    The Coordinating Committee set up by the Danish government in 1986 were given the responsibility of investigating the potentials for biomass conversion plants in Denmark, especially in relation to agricultural, environmental and energy aspects. The results of the Committee's plan of management for this project are presented. This main report covers 13 background reports which deal with special aspects in detail. The report describes the overall plan of management, the demonstration and follow-up programme and the individual biogas demonstration plants. Information gained from these investigations is presented. The current general status, (with emphasis on the technical and economical aspects) and the prospects for the future are discussed. The interest other countries have shown in Danish activities within the field of biogas production is described, and the possibilities for Danish export of technology and know-how in this relation are discussed. It is claimed that Denmark is the first country that has instigated a coordinated development programme for biomass conversion plants. (AB) 24 refs

  15. Experiences with mobile units for liquid raw management in slovak and czech nuclear power plants

    International Nuclear Information System (INIS)

    Text describes the experience from multiple projects of retrieval, pre-treatment and final treatment of liquid radioactive waste in Slovak and Czech NPPs during last 20 years. The purpose of these projects was to retrieve RAW (sludge, used resins, crystalline sediments, other types of liquid RAW) from operational tanks or technological systems, its pre-treatment and its solidification into 200 l or 60 l drums. Slovak and Czech NPPs are WWER 440 type (except Bohunice A1 NPP) where operational liquid RAW should be stored in large capacity tanks during the whole operational period. Volume of tanks placed in auxiliary buildings is from 460 to 550 m3, usually they are situated in rooms with limited access and minimal handling space. The liquid RAW management process is described. (authors)

  16. Plant layout and fire protection in nuclear power plants

    International Nuclear Information System (INIS)

    Fire protection programme for the plants start right from the layout stage. Provision of proper fire barriers around buildings, easy accessibility to the various plant buildings as well as fire station for the fire-fighting equipment/personnel, good house-keeping around the plant inside as well as adjacent to the plant outside, due consideration for fire influence as well as containment approach in the layout of safety systems/equipment help in minimising the damaging effect of fire and prevent its spread. Proper layout goes a long way in ensuring a fire-incident-free plant

  17. Assimilate Partitioning and Plant Development

    Institute of Scientific and Technical Information of China (English)

    Yong-Ling Ruan; John W.Patrick; Hans Weber

    2010-01-01

    @@ It has been a pleasure to organize this special issue of Molecular Plant on 'Assimilate Partitioning and Plant Development'. Assimilate, a collective term describing organic carbon (C) and nitrogen (N), is of paramount importance for plant development and realization of crop productivity.

  18. Regulating nutrient allocation in plants

    Energy Technology Data Exchange (ETDEWEB)

    Udvardi, Michael; Yang, Jiading; Worley, Eric

    2014-12-09

    The invention provides coding and promoter sequences for a VS-1 and AP-2 gene, which affects the developmental process of senescence in plants. Vectors, transgenic plants, seeds, and host cells comprising heterologous VS-1 and AP-2 genes are also provided. Additionally provided are methods of altering nutrient allocation and composition in a plant using the VS-1 and AP-2 genes.

  19. Combined cycle power plant Skopje

    International Nuclear Information System (INIS)

    Regarding the new directions in constructing combined cycle power plants, in this work an idea of such plant in Skopje with power of 190 MW has been elaborated. This plant will be constructed on the site of the existing TPP 'Energetika', AD ESM. The rates of efficiency for different condition of operation has been estimated. (Author)

  20. Arabinogalactan proteins in plants

    Directory of Open Access Journals (Sweden)

    Ewa Szczuka

    2013-04-01

    Full Text Available AGPs (arabinogalactan-proteins are the major constituent of arabic gum and have been used as emulsifiers and stabilizing agents. They are also one of the most abundant and heterogeneous class forming a large family of proteoglycans that sculpt the surface not only of plant but also of all eukaryotic cells. Undoubtedly, AGPs appear in numerous biological processes, playing diverse functions. Despite their abundance in nature and industrial utility, the in vivofunction(s of AGPs still remains unclear or even unknown. AGPs are commonly distributed in different plant organs and probably participate in all aspects of plant growth and development including reproduction (e.g. they are present in the stigma including stigma exudates, and in transmitting tissues in styles, pollen grains, and pollen tubes. The functions and evident involvement of AGPs in sexual plant reproduction in a few plant species as Actinidia deliciosa (A.Chev. C.F.Liang & A.R.Ferguson, Amaranthus hypochondriacus L., Catharanthus roseus (L. G.Don, Lolium perenneL. and Larix deciduaMill. are known from literature. The localization of two kinds of AGP epitopes, recognized by the JIM8 and JIM13 mAbs, in anatomically different ovules revealed some differences in spatial localization of these epitopes in ovules of monocots Galanthus nivalis L. and Galtonia candicans (Baker Decne. and dicots like Oenothera species and Sinapis albaL. A detailed study of the localization of AGPs in egg cells, zygotes, including the zygote division stage, and in two-celled proembryos in Nicotiana tabacumL. prompts consideration of the necessity of their presence in the very early steps of ontogenesis. The selective labeling obtained with AGP mAbs JIM8, JIM13, MAC207, and LM2 during Arabidopsis thaliana(L. Heynh. development suggests that some AGPs can be regarded as molecular markers for gametophytic cell differentiation. Moreover, the results show evident differences in the distribution of specific AGP

  1. Plantas Tintureiras Dye Plants

    Directory of Open Access Journals (Sweden)

    Maria do Carmo Serrano

    2008-12-01

    Full Text Available Existe uma vasta bibliografia, até ao séc. XVIII, sobre plantas produtoras de corantes naturais, sendo que apenas um número limitado foi utilizado no tingimento de têxteis antigos, devido à capacidade de resistência à lavagem e ao desvanecimento. O cultivo de plantas ou a sua existência no mundo silvestre tiveram uma enorme importância sócio-económica para muitas comunidades espalhadas pelo mundo e pelas intensas trocas comerciais que geraram. A extracção dos corantes era feita a partir de diferentes partes de plantas ou árvores. Nalgumas plantas eram utilizadas as folhas, enquanto noutras se aproveitavam as flores, as raízes, os frutos, troncos ou sementes. Os corantes podiam ser extraídos através de processos complexos que envolviam diversas operações como maceração, destilação, fermentação, decantação, precipitação, filtração, etc. Neste âmbito, são apresentadas algumas das plantas cultivadas em Portugal e em muitos outros países europeus e que foram usadas em tinturaria. Este trabalho pretende ser um contributo para obstar à perda de conhecimentos das condições de cultivo e da forma como se maximizava a produção de corantes.A vast bibliography exists, until the 18th cen-tury, on natural dyes obtained from plants, but only one limited number was used in the dyeing of old textiles, due to capacity of resistance to wash and light fading. The culture of plants or its existence in the wild world had an enormous economical importance for many communities spread for the world, and the intense commercial exchanges that had generated. The extraction of dyes was done from different parts of plants or trees. In some plants was used the leaves, others, only the roots, the fruits, trunks or seeds. The dyes could be extracted through complex processes that involved various operations as maceration, distillation, fermentation, decantation, precipitation, filtration, etc. In this scope, some of the plants cultivated in

  2. Towards Multi Fuel SOFC Plant

    DEFF Research Database (Denmark)

    Rokni, Masoud; Clausen, Lasse Røngaard; Bang-Møller, Christian

    2011-01-01

    Complete Solid Oxide Fuel Cell (SOFC) plants fed by several different fuels are suggested and analyzed. The plants sizes are about 10 kW which is suitable for single family house with needs for both electricity and heat. Alternative fuels such as, methanol, DME (Di-Methyl Ether) and ethanol...... are also considered and the results will be compared with the base plant fed by Natural Gas (NG). A single plant design will be suggested that can be fed with methanol, DME and ethanol whenever these fuels are available. It will be shown that the plant fed by ethanol will have slightly higher electrical...

  3. B plant mission analysis report

    International Nuclear Information System (INIS)

    This report further develops the mission for B Plant originally defined in WHC-EP-0722, ''System Engineering Functions and Requirements for the Hanford Cleanup Mission: First Issue.'' The B Plant mission analysis will be the basis for a functional analysis that breaks down the B Plant mission statement into the necessary activities to accomplish the mission. These activities are the product of the functional analysis and will then be used in subsequent steps of the systems engineering process, such as identifying requirements and allocating those requirements to B Plant functions. The information in this mission analysis and the functional and requirements analysis are a part of the B Plant technical baseline

  4. Effects of Wind on Plants

    Science.gov (United States)

    de Langre, Emmanuel

    2008-01-01

    This review surveys the large variety of mechanical interactions between wind and plants, from plant organs to plant systems. These interactions range from leaf flutter to uprooting and seed dispersal, as well as indirect effects on photosynthesis or insect communication. I first estimate the relevant nondimensional parameters and then discuss turbulence, plant dynamics, and the mechanisms of interaction in this context. Some common features are identified and analyzed in relation to the wind engineering of manmade structures. Strong coupling between plants and wind exists, in which the plant motion modifies the wind dynamics. I also present some related biological issues in which the relation between plant life and wind environment is emphasized. [V]oici la lourde nappe/Et la profonde houle et l’océan des blés [Like a sheet/The deep swell on a sea of wheat] Charles Péguy (1873 1914)

  5. Plant adaptation to drought stress

    Science.gov (United States)

    Basu, Supratim; Ramegowda, Venkategowda; Kumar, Anuj; Pereira, Andy

    2016-01-01

    Plants in their natural habitats adapt to drought stress in the environment through a variety of mechanisms, ranging from transient responses to low soil moisture to major survival mechanisms of escape by early flowering in absence of seasonal rainfall. However, crop plants selected by humans to yield products such as grain, vegetable, or fruit in favorable environments with high inputs of water and fertilizer are expected to yield an economic product in response to inputs. Crop plants selected for their economic yield need to survive drought stress through mechanisms that maintain crop yield. Studies on model plants for their survival under stress do not, therefore, always translate to yield of crop plants under stress, and different aspects of drought stress response need to be emphasized. The crop plant model rice ( Oryza sativa) is used here as an example to highlight mechanisms and genes for adaptation of crop plants to drought stress. PMID:27441087

  6. Silicon in plant disease control

    Directory of Open Access Journals (Sweden)

    Edson Ampélio Pozza

    2015-06-01

    Full Text Available All essential nutrients can affect the incidence and severity of plant diseases. Although silicon (Si is not considered as an essential nutrient for plants, it stands out for its potential to decrease disease intensity in many crops. The mechanism of Si action in plant resistance is still unclear. Si deposition in plant cell walls raised the hypothesis of a possible physical barrier to pathogen penetration. However, the increased activity of phenolic compounds, polyphenol oxidases and peroxidases in plants treated with Si demonstrates the involvement of this element in the induction of plant defense responses. The studies examined in this review address the role of Si in disease control and the possible mechanisms involved in the mode of Si action in disease resistance in plants.

  7. Pinellas Plant Environmental Baseline Report

    Energy Technology Data Exchange (ETDEWEB)

    1997-06-01

    The Pinellas Plant has been part of the Department of Energy`s (DOE) nuclear weapons complex since the plant opened in 1957. In March 1995, the DOE sold the Pinellas Plant to the Pinellas County Industry Council (PCIC). DOE has leased back a large portion of the plant site to facilitate transition to alternate use and safe shutdown. The current mission is to achieve a safe transition of the facility from defense production and prepare the site for alternative uses as a community resource for economic development. Toward that effort, the Pinellas Plant Environmental Baseline Report (EBR) discusses the current and past environmental conditions of the plant site. Information for the EBR is obtained from plant records. Historical process and chemical usage information for each area is reviewed during area characterizations.

  8. Heavy Metal Pumps in Plants

    Energy Technology Data Exchange (ETDEWEB)

    Harper, J.F.

    2000-10-01

    The long term goal of the funded research is to understand how heavy metals are taken up from the soil and translocated throughout the plant. The potential application of this research is to create plants with better heavy metal uptake systems and thereby improve the ability of these plants to help clean up toxic metals from soils. A rate limiting step is using plant for bioremediation is the normally poor capacity of plants to concentrate toxic metals. Our interest in metal ion transport systems includes those for essential mineral nutrients such as molybdenum, copper, iron, manganese, as well as toxic metals such as cerium, mercury, cesium, cadmium, arsenic and selenium. Understanding the pathways by which toxic metals accumulate in plants will enable the engineering of plants to exclude toxic metals and create healthier food sources, or to extract toxic metals from the soil as a strategy to clean up polluted lands and water.

  9. Myrmecotrophy: Plants fed by ants.

    Science.gov (United States)

    Beattie, A

    1989-06-01

    Two plant genera with tubers specialized for occupation by ants absorb nutrients from waste materials accumulated by the resident colonies. The mineral resources of these host plants are augmented by colony foraging which functions as a second root system. This mutualistic interaction has become known as myrmecotrophy. Many other kinds of plant structure are apparent adaptations to accommodate ant colonies; these include pouches on leaves or petioles and hollow twigs, stems or thorns. Sometimes the ant species residing in these structures are aggressive towards enemies of the host plant and are important for plant defence. Recent research provides some evidence that myrmecotrophy may have a wider role in plant nutrition, at least when subsidizing the costs of plant defence. PMID:21227344

  10. Owners of nuclear power plants

    International Nuclear Information System (INIS)

    The listing indicates percentage ownership of commercial nuclear power plants by utility companies as of August 15, 1977. The list includes all plants operating, under construction, docketed for NRC safety and environmental reviews, or under NRC antitrust review. It does not include those plants announced but not yet under review or those plants formally cancelled. In many cases, ownership may be in the process of changing as a result of antitrust license conditions and hearings, altered financial conditions, changed power needs, and other reasons. However, this list reflects only those ownership percentages of which the NRC has been formally notified. Part I lists plants alphabetically with their associated applicants and percentage ownership. Part II lists applicants alphabetically with their associated plants and percentage ownership. Part I also indicates which plants have received operating licenses

  11. Plant toxicity, adaptive herbivory, and plant community dynamics

    Science.gov (United States)

    Feng, Z.; Liu, R.; DeAngelis, D.L.; Bryant, J.P.; Kielland, K.; Stuart, Chapin F.; Swihart, R.K.

    2009-01-01

    We model effects of interspecific plant competition, herbivory, and a plant's toxic defenses against herbivores on vegetation dynamics. The model predicts that, when a generalist herbivore feeds in the absence of plant toxins, adaptive foraging generally increases the probability of coexistence of plant species populations, because the herbivore switches more of its effort to whichever plant species is more common and accessible. In contrast, toxin-determined selective herbivory can drive plant succession toward dominance by the more toxic species, as previously documented in boreal forests and prairies. When the toxin concentrations in different plant species are similar, but species have different toxins with nonadditive effects, herbivores tend to diversify foraging efforts to avoid high intakes of any one toxin. This diversification leads the herbivore to focus more feeding on the less common plant species. Thus, uncommon plants may experience depensatory mortality from herbivory, reducing local species diversity. The depensatory effect of herbivory may inhibit the invasion of other plant species that are more palatable or have different toxins. These predictions were tested and confirmed in the Alaskan boreal forest. ?? 2009 Springer Science+Business Media, LLC.

  12. Nuclear Plant Data Bank

    International Nuclear Information System (INIS)

    The Nuclear Plant Data Bank (NPDB) is being developed at the Los Alamos National Laboratory to assist analysts in the rapid and accurate creation of input decks for reactor transient analysis. The NPDB will reduce the time and cost of the creation or modification of a typical input deck. This data bank will be an invaluable tool in the timely investigation of recent and ongoing nuclear reactor safety analysis. This paper discusses the status and plans for the NPDB development and describes its anticipated structure and capabilities

  13. Genetics and Plant Development

    OpenAIRE

    Prunet, Nathanaël; Meyerowitz, Elliot M.

    2016-01-01

    There are only three grand theories in biology: the theory of the cell, the theory of the gene, and the theory of evolution. Two of these, the cell and gene theories, originated in the study of plants, with the third resulting in part from botanical considerations as well. Mendel's elucidation of the rules of inheritance was a result of his experiments on peas. The rediscovery of Mendel's work in 1900 was by the botanists de Vries, Correns, and Tschermak. It was only in subsequent years that ...

  14. Floating nuclear power plants

    International Nuclear Information System (INIS)

    This article examines the legal regime for floating nuclear power plants (FNPs), in view of the absence of specific US legislation and the very limited references to artificial islands in the Law of the Sea Convention. The environmental impacts of FNPs are examined and changes in US regulation following the Three Mile Island accident and recent US court decisions are described. References in the Law of the Sea Convention relevant to FNPs are outlined and the current status of international law on the subject is analysed. (author)

  15. Robots and plant safety

    International Nuclear Information System (INIS)

    The application of robots in the harsh environments in which TELEMAN equipment will have to operate has large benefits, but also some drawbacks. The main benefit is the ability gained to perform tasks where people cannot go, while there is a possibility of inflicting damage to the equipment handled by the robot, and the plant when mobile robots are involved. The paper describes the types of possible damage and the precautions to be taken in order to reduce the frequency of the damaging events. A literature study for the topic only gave some insight into examples, but no means for a systematic treatment of the topic. (au) 16 refs

  16. Demonstration tokamak power plant

    Energy Technology Data Exchange (ETDEWEB)

    Abdou, M.; Baker, C.; Brooks, J.; Ehst, D.; Mattas, R.; Smith, D.L.; DeFreece, D.; Morgan, G.D.; Trachsel, C.

    1983-01-01

    A conceptual design for a tokamak demonstration power plant (DEMO) was developed. A large part of the study focused on examining the key issues and identifying the R and D needs for: (1) current drive for steady-state operation, (2) impurity control and exhaust, (3) tritium breeding blanket, and (4) reactor configuration and maintenance. Impurity control and exhaust will not be covered in this paper but is discussed in another paper in these proceedings, entitled Key Issues of FED/INTOR Impurity Control System.

  17. Plant operation method

    International Nuclear Information System (INIS)

    A precoating material is coated on the surface of a hollow thread membrane filter before the start-up operation of a plant. With such a constitution, since the precoating material captures solid materials to prevent them from reaching the surface of the membrane of the filter when the clogging-promoting solid materials are present in condensates, the clogging of the filter membrane can be suppressed effectively. In addition, since the precoating operation is limited to the time before the actuation operation, the increase of the amount of wastes can be minimized. (T.M.)

  18. Miniature thermoelectric power plant

    OpenAIRE

    Moreira, António H. J.; Freitas, Ricardo; Esteves, João Sena

    2006-01-01

    This paper describes a miniature thermoelectric power plant made with the boiler and the water pump from an old starch iron. It also uses a computer cooling fan, which serves as electric power generator. The boiler vaporizes the water it receives from the water pump. Then, the steam is injected over the turbine of the fan making it twirl. The voltage generated by the fan is enough to lighten a couple of LEDs. A wooden case with a chimney encloses all the referred devices.

  19. Miniature thermoelectric power plant

    OpenAIRE

    Moreira, António, 1957-; Freitas, Ricardo; Sepúlveda, João; Esteves, João Sena

    2010-01-01

    This paper describes a miniature thermoelectric power plant made with the boiler and the water pump from an old starch iron. It also uses a computer cooling fan, which serves as electric power generator. The boiler vaporizes the water it receives from the water pump. Then, the steam is injected on the turbine of the fan, making it twirl. The voltage generated by the fan is enough to lighten a couple of LEDs. A wooden case with a chimney encloses all the referred devices.

  20. Plant emergency procedures

    Energy Technology Data Exchange (ETDEWEB)

    Thompson, P.

    1959-10-01

    Emergency procedures are given for the water plant, effluents, contamination, criticality and storage basin ruptures. For the water supply: a loss of flow to a single tube, loss of flow to several tubes, interruption of river flow, breach of Grand Coulee dam, and evacuation are all considered. For the failure of the effluent system: blockage or rupture of effluent lines, retention basin, or outfall line; and downcomer overflow or failure are discussed. An emergency resulting in the spread of contamination is examined. Hypothetical criticality accidents in dry or wet storage are discussed.

  1. The serse pilot plant

    International Nuclear Information System (INIS)

    In Italy there are some 120 m3 of aged first cycle reprocessing aqueous wastes coming from three different campaigns which were carried out at the EUREX and ITREC pilot reprocessing plants with the MTR (materials testing reactor), CANDU (Canadian deuterium uranium) and Elk River nuclear fuel elements. The authors report a simplified chemical composition of the MCE (MTR + CANDU + Elk River) solution; the values of table I are referred to the solution which would be obtained by mixing the total amounts of the three aged wastes actually stored in four stainless steel tanks

  2. Resources of medicinal plants in China

    OpenAIRE

    Guan-Fu He

    1991-01-01

    Four aspect dealts with in this paper are as follows: 1. environment of medicinal plants; 2. brief history on studies of medicinal plants; 3. species of medicinal plants; 4. studies on development and utilization of medicinal plant resources.

  3. Power plant removal costs

    International Nuclear Information System (INIS)

    The financial, regulatory and political significance of the estimated high removal costs of nuclear power plants has generated considerable interest in recent years, and the political significance has resulted in the Nuclear Regulatory Commission (NRC) eliminating the use of conventional depreciation accounting for the decontamination portion of the removal (decommissioning). While nuclear plant licensees are not precluded from utilizing conventional depreciation accounting for the demolition of non-radioactive structures and site restoration, state and federal utility regulators have not been favorably inclined to requests for this distinction. The realization that steam-generating units will be more expensive to remove, relative to their original cost, predates the realization that nuclear units will be expensive. However, the nuclear issues have overshadowed this realization, but are unlikely to continue to do so. Numerous utilities have prepared cost estimates for steam generating units, and this presentation discusses the implications of a number of such estimates that are a matter of public record. The estimates cover nearly 400 gas, oil, coal and lignite generating units. The earliest estimate was made in 1978, and for analysis purposes the author has segregated them between gas and oil units, and coal and lignite units

  4. Nuclear power plant

    International Nuclear Information System (INIS)

    The plant of the present invention can suppress the amount of clad in feedwater when drains of a moisture content separation heater or a high pressure feedwater heater are recovered. That is, the moisture content separation heater has ferrite or austenite type stainless steel heat transfer pipes. A chromium-enriched layer is formed on the surface of the heat transfer pipe by chromizing treatment or flame spraying. Then, a stainless steel heat transfer pipe having chromium-enriched layer is incorporated to at least one of the moisture content separation heater or the high pressure feedwater heater. During plant operation, the temperature of heated steams is as high as 235 to 282degC. Accordingly, this is a severe corrosion region for ferrite or austenite stainless steel. However, the chromium-enriched layer of excellent corrosion resistance is formed on the surface of the heat transfer pipe. Accordingly, metal ingredients are less leached. As a result, even if the drains are recovered to feedwater, increase of concentration of the clads in the feedwater can be prevented. (I.S.)

  5. Lipid hydroperoxides in plants.

    Science.gov (United States)

    Griffiths, G; Leverentz, M; Silkowski, H; Gill, N; Sánchez-Serrano, J J

    2000-12-01

    Hydroperoxides are the primary oxygenated products of polyunsaturated fatty acids and were determined spectrophotometrically based on their reaction with an excess of Fe2+ at low pH in the presence of the dye Xylenol Orange. Triphenylphosphine-mediated hydroxide formation was used to authenticate the signal generated by the hydroperoxides. The method readily detected lipid peroxidation in a range of plant tissues including Phaseolus hypocotyls (26 +/- 5 nmol.g of fresh weight(-1); mean +/- S.D.), Alstroemeria floral tissues (sepals, 66+/-13 nmol.g of fresh weight(-1); petals, 49+/-6 nmol.g of fresh weight(-1)), potato leaves (334+/-75 nmol.g of fresh weight(-1)), broccoli florets (568+/-68 nmol.g of fresh weight(-1)) and Chlamydomonas cells (602+/-40 nmol.g of wet weight(-1)). Relative to the total fatty acid content of the tissues, the percentage hydroperoxide content was within the range of 0.6-1.7% for all tissue types (photosynthetic and non-photosynthetic) and represents the basal oxidation level of membrane fatty acids in plant cells. Leaves of transgenic potato with the fatty acid hydroperoxide lyase enzyme expressed in the antisense orientation were elevated by 38%, indicating a role for this enzyme in the maintenance of cellular levels of lipid hydroperoxides. PMID:11171226

  6. Nuclear Power Plant 1996

    International Nuclear Information System (INIS)

    Again this year, our magazine presents the details of the conference on Spanish nuclear power plant operation held in February and that was devoted to 1996 operating results. The Protocol for Establishment of a New Electrical Sector Regulation that was signed last December will undoubtedly represent a new challenge for the nuclear industry. By clearing stating that current standards of quality and safety should be maintained or even increased if possible, the Protocol will force the Sector to improve its productivity, which is already high as demonstrated by the results of the last few years described during this conference and by recent sectorial economic studies. Generation of a nuclear kWh that can compete with other types of power plants is the new challenge for the Sector's professionals, who do not fear the new liberalization policies and approaching competition. Lower inflation and the resulting lower interest rates, apart from being representative indices of our economy's marked improvement, will be very helpful in facing this challenge. (Author)

  7. Plant transcription factors.

    Science.gov (United States)

    Meshi, T; Iwabuchi, M

    1995-12-01

    Transcriptional regulation of gene expression relies on the recognition of promoter elements by transcription factors. In the past several years, a considerable number of (putative) transcription factors have been identified in plants. Some genes coding for these factors were isolated by south-western screening with oligonucleotides as a probe or by homology-based screening, and others were initially isolated by genetic means and subsequently identified as the genes for transcription factors. These transcription factors often form families of structurally related proteins with similar DNA-binding specificities and in addition, they are sometimes involved in related phenomena. Some groups of factors homo- and/or heterodimerize to increase the length and variability of the target sequences. Transcriptional activators, in general, comprise a modular activation domain. The activities of the transcription factors are controlled by post-translational modification, like phosphorylation and glycosylation, as well as at the levels of nuclear transport, oligomerization, etc. In this review, we will summarize the current knowledge of plant transcription factors to help understand the mechanistic aspects of the transcriptional regulation of genes. PMID:8589926

  8. The Marcoule pilot plant

    International Nuclear Information System (INIS)

    The Marcoule spent fuel reprocessing pilot facility was built in 1960-1961 for extended testing of the PUREX process with various types of fuel under conditions similar to those encountered in a production plant. Extensive modification work was undertaken on the facility in 1983 in the scope of the TOR project, designed with the following objectives: - increase the throughput capacity to at least 5 metric tons of PHENIX equivalent fuel per year, - extend equipment and process R and D capability, - improve job safety by maximum use of remote handling facilities, - maximize waste conditioning treatments to produce waste forms suitable for direct storage, - provide a true industrial process demonstration in continuous operation under centralized control using computerized procedures. The redesigned plant is scheduled to begin operation during the second half of 1986. The proximity of the Industrial Prototypes Service and the ATALANTE radiochemical research laboratory scheduled to begin operation in 1990, will provide a synergistic environment in which R and D program may be carried out under exceptional conditions

  9. Power Plant Replacement Study

    Energy Technology Data Exchange (ETDEWEB)

    Reed, Gary

    2010-09-30

    This report represents the final report for the Eastern Illinois University power plant replacement study. It contains all related documentation from consideration of possible solutions to the final recommended option. Included are the economic justifications associated with the chosen solution along with application for environmental permitting for the selected project for construction. This final report will summarize the results of execution of an EPC (energy performance contract) investment grade audit (IGA) which lead to an energy services agreement (ESA). The project includes scope of work to design and install energy conservation measures which are guaranteed by the contractor to be self-funding over its twenty year contract duration. The cost recovery is derived from systems performance improvements leading to energy savings. The prime focus of this EPC effort is to provide a replacement solution for Eastern Illinois University’s aging and failing circa 1925 central steam production plant. Twenty-three ECMs were considered viable whose net impact will provide sufficient savings to successfully support the overall project objectives.

  10. Power Plant Replacement Study

    Energy Technology Data Exchange (ETDEWEB)

    Reed, Gary

    2010-09-30

    This report represents the final report for the Eastern Illinois University power plant replacement study. It contains all related documentation from consideration of possible solutions to the final recommended option. Included are the economic justifications associated with the chosen solution along with application for environmental permitting for the selected project for construction. This final report will summarize the results of execution of an EPC (energy performance contract) investment grade audit (IGA) which lead to an energy services agreement (ESA). The project includes scope of work to design and install energy conservation measures which are guaranteed by the contractor to be self-funding over its twenty year contract duration. The cost recovery is derived from systems performance improvements leading to energy savings. The prime focus of this EPC effort is to provide a replacement solution for Eastern Illinois University's aging and failing circa 1925 central steam production plant. Twenty-three ECMs were considered viable whose net impact will provide sufficient savings to successfully support the overall project objectives.

  11. Nuclear Power Plant

    Directory of Open Access Journals (Sweden)

    Analia Bonelli

    2012-01-01

    Full Text Available A description of the results for a Station Black-Out analysis for Atucha 2 Nuclear Power Plant is presented here. Calculations were performed with MELCOR 1.8.6 YV3165 Code. Atucha 2 is a pressurized heavy water reactor, cooled and moderated with heavy water, by two separate systems, presently under final construction in Argentina. The initiating event is loss of power, accompanied by the failure of four out of four diesel generators. All remaining plant safety systems are supposed to be available. It is assumed that during the Station Black-Out sequence the first pressurizer safety valve fails stuck open after 3 cycles of water release, respectively, 17 cycles in total. During the transient, the water in the fuel channels evaporates first while the moderator tank is still partially full. The moderator tank inventory acts as a temporary heat sink for the decay heat, which is evacuated through conduction and radiation heat transfer, delaying core degradation. This feature, together with the large volume of the steel filler pieces in the lower plenum and a high primary system volume to thermal power ratio, derives in a very slow transient in which RPV failure time is four to five times larger than that of other German PWRs.

  12. Phosphatases in plants.

    Science.gov (United States)

    Schweighofer, Alois; Meskiene, Irute

    2015-01-01

    Reversible protein phosphorylation is an essential posttranslational modification mechanism executed by opposing actions of protein phosphatases and protein kinases. About 1,000 predicted kinases in Arabidopsis thaliana kinome predominate the number of protein phosphatases, of which there are only ~150 members in Arabidopsis. Protein phosphatases were often referred to as "housekeeping" enzymes, which act to keep eukaryotic systems in balance by counteracting the activity of protein kinases. However, recent investigations reveal the crucial and specific regulatory functions of phosphatases in cell signaling. Phosphatases operate in a coordinated manner with the protein kinases, to execute their important function in determining the cellular response to a physiological stimulus. Closer examination has established high specificity of phosphatases in substrate recognition and important roles in plant signaling pathways, such as pathogen defense and stress regulation, light and hormonal signaling, cell cycle and differentiation, metabolism, and plant growth. In this minireview we provide a compact overview about Arabidopsis protein phosphatase families, as well as members of phosphoglucan and lipid phosphatases, and highlight the recent discoveries in phosphatase research. PMID:25930691

  13. Detergent zeolite filtration plant

    Directory of Open Access Journals (Sweden)

    Stanković Mirjana S.

    2003-01-01

    Full Text Available The IGPC Engineering Department designed basic projects for detergent zeolite filtration plant, using technology developed in the IGPC laboratories. Several projects were completed: technological, machine, electrical, automation. On the basis of these projects, a production plant with a capacity of 75,000 t/y was manufactured, at "Zeolite Mira", Mira (VE, Italy, in 1997, for increasing detergent zeolite production, from 50,000 to 100,000 t/y. The main goal was to increase the detergent zeolite production capacity. The technological cycle of the filtrate was closed, and no effluents emitted, and there is no pollution. The detergent zeolite filtration process is fully continuous, by which a significant improvement in zeolite production was achieved, both in unification of quality of the product and in simplifying production. This process is fully automatized, and the product has uniform quality. The production process can be controlled manually, which is necessary during start-up, and repairs. By installing additional process equipment (centrifugal pumps, a vacuum system and belt filter technological bottlenecks were overcome by adjusting the work of centrifugal pumps and belt filter, and also by optimizing the capacities of process equipment.

  14. Radiation hormesis in plant

    International Nuclear Information System (INIS)

    This research was performed to investigate the effects of low dose gamma radiation on germination, early growth and yield in a wide range of vegetable crops. The stimulating effects of gamma radiation was evaluated through investigating germination rate, early growth and physiological activities such as enzyme activities, hormones and photosynthetic responses etc. Induction of increased shikonin production in the plants by low dose gamma radiation was challenged to open up the possibility of applying radiation hormesis to the industrial mass production system of the natural materials useful to humans. Effects of natural radiation emitted from solid ceramics was compared on the plants with those of low dose gamma radiation. Finally, activation of aged seeds by low dose gamma radiation, probably facilitating their commercial circulation in the agriculture, was challenged in association with an industrial seed company. Moreover, the shift in resistance of the crops to environmental stresses including UV and low temperature was addressed as well as DNA damage, repair and protein expression after gamma irradiation

  15. Carbohydrate Microarrays in Plant Science

    DEFF Research Database (Denmark)

    Fangel, Jonatan Ulrik; Pedersen, H.L.; Vidal-Melgosa, S.; Ahl, Louise Isager; Salmean, A.A.; Egelund, Jack; Rydahl, Maja Gro; Clausen, M.H.; Willats, William George Tycho

    2012-01-01

    Almost all plant cells are surrounded by glycan-rich cell walls, which form much of the plant body and collectively are the largest source of biomass on earth. Plants use polysaccharides for support, defense, signaling, cell adhesion, and as energy storage, and many plant glycans are also importa...... plant research and can be used to map glycan populations across large numbers of samples to screen antibodies, carbohydrate binding proteins, and carbohydrate binding modules and to investigate enzyme activities.......Almost all plant cells are surrounded by glycan-rich cell walls, which form much of the plant body and collectively are the largest source of biomass on earth. Plants use polysaccharides for support, defense, signaling, cell adhesion, and as energy storage, and many plant glycans are also important...... industrially and nutritionally. Understanding the biological roles of plant glycans and the effective exploitation of their useful properties requires a detailed understanding of their structures, occurrence, and molecular interactions. Microarray technology has revolutionized the massively high...

  16. Plant caspase-like proteases in plant programmed cell death

    OpenAIRE

    Xu, Qixian; Zhang, Lingrui

    2009-01-01

    Programmed cell death (PCD) is a genetically-controlled disassembly of the cell. In animal systems, the central core execution switch for apoptotic PCD is the activation of caspases (Cysteine-containing Aspartate-specific proteases). Accumulating evidence in recent years suggests the existence of caspase-like activity in plants and its functional involvement in various types of plant PCD, although no functional homologs of animal caspases were identified in plant genome. In this mini-review, ...

  17. Invasive plant integration into native plant across Europe

    OpenAIRE

    Vilà, Montserrat; Bartomeus, Ignasi; Dietzsch, Anke C.; Petanidou, Theodora; Steffan-Dewenter, Ingolf; Stout, Jane C.; Tscheulin, Thomas

    2009-01-01

    The structure of plant – pollinator networks has been claimed to be resilient to changes in species composition due to the weak degree of dependence among mutualistic partners. However, detailed empirical investigations of the consequences of introducing an alien plant species into mutualistic networks are lacking. We present the first cross-European analysis by using a standardized protocol to assess the degree to which a particular alien plant ...

  18. Native plant community response to alien plant invasion and removal

    OpenAIRE

    Andreu, Jara; Vilà, Montserrat

    2011-01-01

    Given the potential ecological impacts of invasive species, removal of alien plants has become an important management challenge and a high priority for environmental managers. To consider that a removal effort has been successful requires both, the effective elimination of alien plants and the restoration of the native plant community back to its historical composition and function. We present a conceptual framework based on observational and experimental data that compares invaded, non-inva...

  19. Top 10 plant pathogenic bacteria in molecular plant pathology

    OpenAIRE

    Mansfield, John; Genin, Stephane; Magori, Shimpei; Citovsky, Vitaly; Sriariyanum, Malinee; Ronald, Pamela; Dow, Max; Verdier, Valérie; Beer, Steven V.; Marcos A. MACHADO; Toth, Ian; Salmond, George; Foster, Gary D.

    2012-01-01

    Many plant bacteriologists, if not all, feel that their particular microbe should appear in any list of the most important bacterial plant pathogens. However, to our knowledge, no such list exists. The aim of this review was to survey all bacterial pathologists with an association with the journal Molecular Plant Pathology and ask them to nominate the bacterial pathogens they would place in a 'Top 10' based on scientific/economic importance. The survey generated 458 votes from the internation...

  20. Modelling plant compensatory effects in plant-insect dynamics

    OpenAIRE

    Lebon, Audrey; Mailleret, Ludovic; Grognard, Frédéric; Dumont, Yves

    2012-01-01

    International audience Modelling plant-pest interactions is not an obvious task since the involved processes are numerous and complex. We propose a minimal model based on trophic relations and the concept of plant compensation capacity. We only consider three main components in our system: the plant foliar biomass, the compensation capacity, and the pest population. We prove that there exist two threshold parameters, N1 and N2, and show that the system admits different equilibria, which ar...

  1. Celebrating Plant Cells: A Special Issue on Plant Cell Biology

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    @@ A special issue on plant cell biology is long overdue for JIPB! In the last two decades or so, the plant biology community has been thrilled by explosive discoveries regarding the molecular and genetic basis of plant growth, development, and responses to the environment, largely owing to recent maturation of model systems like Arabidopsis thaliana and the rice Oryza sativa, as well as the rapid development of high throughput technologies associated with genomics and proteomics.

  2. 7 CFR 1131.7 - Pool plant.

    Science.gov (United States)

    2010-01-01

    ... its route distribution in this marketing area for 3 consecutive months or if the plant is required to... 7 Agriculture 9 2010-01-01 2009-01-01 true Pool plant. 1131.7 Section 1131.7 Agriculture... Handling Definitions § 1131.7 Pool plant. Pool Plant means a plant or unit of plants specified...

  3. Attention "Blinks" Differently for Plants and Animals

    Science.gov (United States)

    Balas, Benjamin; Momsen, Jennifer L.

    2014-01-01

    Plants, to many, are simply not as interesting as animals. Students typically prefer to study animals rather than plants and recall plants more poorly, and plants are underrepresented in the classroom. The observed paucity of interest for plants has been described as "plant blindness," a term that is meant to encapsulate both the…

  4. Diagnostic and monitoring systems produced in Vuje, Okruzna 5, 918 64 Trnava, Slovak Republic

    International Nuclear Information System (INIS)

    Based on the 20 years experience in on-line vibration diagnostics of mechanical components in the primary circuit of nuclear power plant PWR WWER-440, Vuje, Okruzna 5, 918 64 Trnava produces its own diagnostic and monitoring systems since 1990. The variety of diagnostic systems includes: loose part monitoring system (LPMS), monitoring system of main circulating pumps (MCPMS), vibration monitoring system (LVMS), leakage monitoring system (LMS). The emphasis in the hardware solution is put on the design modularity and versatility so that many subcomponents (circuit boards) are common or highly similar for all systems. Using exclusively digital data for processing enhances the reliability of the measurements and allows the easy data transportation from one computer to another (e.g., for more sophisticated analysis). Trends in the software development follow the similar path as for the hardware solution - namely, the modularity and versatility of software is the imperative goal. The modern operating systems also incorporate the ability of network communication, which is crucial for the integration of stand-alone diagnostic systems into nuclear power plants information system. So far a number of systems have been successfully installed: 6 LPMSs (Jaslovske Bohunice, Dukovany), 4 MCPMs (Jaslovske Bohunice) and 2 LVMSs (Jaslovske Bohunice), all systems operate in PWR WWER-440 environment. Another diagnostic systems are under construction: 2 LPMSs (Temelin, PWR WWER-1000), 2 MCMSs (Mochovce - PWR WWER-440) and 2 LMSs (Jaslovske Bohunice). (author). 1 fig

  5. Nuclear Plant/Hydrogen Plant Safety: Issues and Approaches

    Energy Technology Data Exchange (ETDEWEB)

    Steven R. Sherman

    2007-06-01

    The U.S. Department of Energy, through its agents the Next Generation Nuclear Plant Project and the Nuclear Hydrogen Initiative, is working on developing the technologies to enable the large scale production of hydrogen using nuclear power. A very important consideration in the design of a co-located and connected nuclear plant/hydrogen plant facility is safety. This study provides an overview of the safety issues associated with a combined plant and discusses approaches for categorizing, quantifying, and addressing the safety risks.

  6. Plant life management and maintenance technologies for nuclear power plants

    International Nuclear Information System (INIS)

    Nuclear power generation occupying an important position for energy source in Japan and supplying about one third of total electric power usage is now required for further upgrading of its economics under regulation relaxation of electric power business. And, under execution retardation of its new planning plant, it becomes important to operate the already established plants for longer term and to secure their stability. Therefore, technical development in response to the plant life elongation is promoted under cooperation of the Ministry of Economics and Industries, electric power companies, literate, and plant manufacturers. Under such conditions, the Hitachi, Ltd. has progressed some technical developments on check inspection, repairs and maintenance for succession of the already established nuclear power plants for longer term under securing of their safety and reliability. And in future, by proposing the check inspection and maintenance program combined with these technologies, it is planned to exert promotion of maintenance program with minimum total cost from a viewpoint of its plant life. Here were described on technologies exerted in the Hitachi, Ltd. such as construction of plant maintenance program in response to plant life elongation agreeing with actual condition of each plant, yearly change mechanism grasping, life evaluation on instruments and materials necessary for maintenance, adequate check inspection, repairs and exchange, and so forth. (G.K.)

  7. Plant photomorphogenesis and canopy growth

    Science.gov (United States)

    Ballare, Carlos L.; Scopel, Ana L.

    1994-01-01

    An important motivation for studying photomorphogenesis is to understand the relationships among plant photophysiology in canopies, canopy productivity, and agronomic yield. This understanding is essential to optimize lighting systems used for plant farming in controlled environments (CE) and for the design of genetically engineered crop strains with altered photoresponses. This article provides an overview of some basic principles of plant photomorphogenesis in canopies and discusses their implications for (1) scaling up information on plant photophysiology from individual plants in CE to whole canopies in the field, and (2) designing lighting conditions to increase plant productivity in CE used for agronomic purposes (e.g. space farming in CE Life Support Systems). We concentrate on the visible (lambda between 400 and 700 nm) and far-infrared (FR; lambda greater than 700 nm) spectral regions, since the ultraviolet (UV; 280 to 400 nm) is covered by other authors in this volume.

  8. Plant life management at Loviisa

    International Nuclear Information System (INIS)

    IVO, Power Engineering Ltd. has developed a company-wide approach to plant life management. The first stage of plant life management comprises operational and maintenance histories, design and plant inspection data using advanced computer systems. The life of the plant can be controlled by maintenance, refurbishment and inspection programs, and by varying the method of plant operation. On-line monitoring is needed, and cost control and training must be taken into account if the life of the plant is to be managed efficiently. Identifying the life-limiting factors is essential at Loviisa. It has been concentrated on the aging in the form of materials degradation due to fatigue, erosion, corrosion, radiation and thermal effects. Certain other life-limiting factors are also mentioned

  9. Carbohydrate Microarrays in Plant Science

    DEFF Research Database (Denmark)

    Fangel, Jonatan Ulrik; Pedersen, H.L.; Vidal-Melgosa, S.;

    2012-01-01

    Almost all plant cells are surrounded by glycan-rich cell walls, which form much of the plant body and collectively are the largest source of biomass on earth. Plants use polysaccharides for support, defense, signaling, cell adhesion, and as energy storage, and many plant glycans are also important...... industrially and nutritionally. Understanding the biological roles of plant glycans and the effective exploitation of their useful properties requires a detailed understanding of their structures, occurrence, and molecular interactions. Microarray technology has revolutionized the massively high...... plant research and can be used to map glycan populations across large numbers of samples to screen antibodies, carbohydrate binding proteins, and carbohydrate binding modules and to investigate enzyme activities....

  10. Plant features measurements for robotics

    Science.gov (United States)

    Miles, Gaines E.

    1989-01-01

    Initial studies of the technical feasibility of using machine vision and color image processing to measure plant health were performed. Wheat plants were grown in nutrient solutions deficient in nitrogen, potassium, and iron. An additional treatment imposed water stress on wheat plants which received a full complement of nutrients. The results for juvenile (less than 2 weeks old) wheat plants show that imaging technology can be used to detect nutrient deficiencies. The relative amount of green color in a leaf declined with increased water stress. The absolute amount of green was higher for nitrogen deficient leaves compared to the control plants. Relative greenness was lower for iron deficient leaves, but the absolute green values were higher. The data showed patterns across the leaf consistent with visual symptons. The development of additional color image processing routines to recognize these patterns would improve the performance of this sensor of plant health.

  11. Quo vadis plant hormone analysis?

    OpenAIRE

    Tarkowská, D. (Danuše); Novák, O. (Ondřej); Floková, K. (Kristýna); Tarkowski, P.; Turečková, V. (Veronika); Grúz, J. (Jiří); Rolčík, J. (Jakub); Strnad, M.

    2014-01-01

    Plant hormones act as chemical messengers in the regulation of myriads of physiological processes that occur in plants. To date, nine groups of plant hormones have been identified and more will probably be discovered. Furthermore, members of each group may participate in the regulation of physiological responses in planta both alone and in concert with members of either the same group or other groups. The ideal way to study biochemical processes involving these signalling molecules is 'hormon...

  12. Medicinal Plants and Cancer Chemoprevention

    OpenAIRE

    Desai, Avni G.; Qazi, Ghulam N; Ganju, Ramesh K.; El-Tamer, Mahmoud; Singh, Jaswant; Saxena, Ajit K; Bedi, Yashbir S; Taneja, Subhash C.; Bhat, Hari K.

    2008-01-01

    Cancer is the second leading cause of death worldwide. Although great advancements have been made in the treatment and control of cancer progression, significant deficiencies and room for improvement remain. A number of undesired side effects sometimes occur during chemotherapy. Natural therapies, such as the use of plant-derived products in cancer treatment, may reduce adverse side effects. Currently, a few plant products are being used to treat cancer. However, a myriad of many plant produc...

  13. Description of reference (model) plant

    International Nuclear Information System (INIS)

    For the workshop on Safeguards System design for a fuel fabrication plant, a generic example of a LEU bulk-handling facility that is based on the Exxon LWR fuel fabrication plants is used. The model plant information is given in the following separate sections: (1) process assumptions; (2) six-month material balance model; (3) measurements; (4) error parameters, measurements, and sigma MUF calculations; (5) material control areas; (6) accounting, records, and reports; (7) tamper-safing; and (8) measurement control program

  14. World wide nuclear plant performance

    International Nuclear Information System (INIS)

    The objectives of the paper are to compare the performance of different reactor systems, to identify the determinants of plant performance, to examine the evidence of technological maturation, to discover the principal causes of outage or unavailability and to draw implications for technology policy. Judgments are neither made nor implied about the relative merits of nuclear and fossil fuel plants, nor on safety issues. This study covers all commercial nuclear plants installed in the non-communist countries. (author)

  15. MEDICINAL PLANTS AGAINST LIVER DISEASES

    OpenAIRE

    Pandey Govind

    2011-01-01

    India is the largest producer of medicinal plants and is rightly called the “Botanical Garden of the World”. The medicinal plants have very important place in the health and vitality of human beings as well as animals. As per the WHO estimates, about three quarters of the world’s population currently use herbs and other traditional medicines to cure various diseases, including liver disorders. Hence, several phytomedicines (medicinal plants or herbal drugs) are now used for the prevention and...

  16. Maintenance of nuclear power plants

    International Nuclear Information System (INIS)

    This Safety Guide provides detailed guidance on the provisions of the Code on the Safety in Nuclear Power Plants: Operation, IAEA Safety Series No. 50-C-O(Rev.1) on the maintenance of structures, systems and components. Like the Code, the Guide forms part of the IAEA's programme, referred to as the NUSS programme, for establishing Codes and Safety Guides relating to nuclear power plants. Effective maintenance is essential for safe operation of a nuclear power plant. It not only ensures that the level of reliability and effectiveness of all plant structures, systems and components having a bearing on safety remains in accordance with design assumptions and intent, but also that the safety status of the plant is not adversely affected after commencement of operation. Nuclear power plant maintenance requires special attention because of: Limitations set by requirements that a minimum number of components remain operable even when the plant is shut down in order to ensure that all necessary safety functions are guaranteed; Difficulty of access to some plant items even when the plant is shut down, due to radiation protection constraints; Potential radiological hazards to site personnel and the public. This Guide covers the organizational and procedural aspects of maintenance but does not give detailed technical advice on the maintenance of particular plant items. It gives guidance on preventive and remedial measures necessary to ensure that all structures, systems and components important to safety are capable of performing as intended. The Guide covers the organizational and administrative requirements for establishing and implementing preventive maintenance schedules, repairing defective plant items, selecting and training maintenance personnel, providing maintenance facilities and equipment, procuring stores and spare parts, reviewing, controlling and carrying out plant modifications, and generating, collecting and retaining maintenance records for establishing and

  17. Output Model of Steel Plant

    Institute of Scientific and Technical Information of China (English)

    ZHANG Long-qiang; TIAN Nai-yuan; ZHANG Jin; XU An-jun

    2008-01-01

    Based on the requirement of compactivity, continuity, and high efficiency, and taking full advantage of cushion capability of flexible parts such as external refining in new generation steel plant, an output model of steel plant was established in terms of matching between BOF and caster. Using this model, the BOF nominal capacity is selected, the caster output and equipment amount are computed, and then the steel plant output is computed.

  18. Alien plant species in Svalbard

    OpenAIRE

    Roalsø, Erik Roall

    2012-01-01

    Increased introductions combined with favorable growing conditions may enhance the presence and increase the success of alien plant species in High Arctic settlements. With global warming, the presence and success of alien plants in Polar Regions might expand beyond the confinement of human settlements and cause problems for native species and ecosystems. Presence and abundance of alien and native vascular plant species were recorded, from chosen study sites, in the Svalbard settlements of Ba...

  19. The relationships of vascular plants.

    OpenAIRE

    Kenrick, P

    2000-01-01

    Recent phylogenetic research indicates that vascular plants evolved from bryophyte-like ancestors and that this involved extensive modifications to the life cycle. These conclusions are supported by a range of systematic data, including gene sequences, as well as evidence from comparative morphology and the fossil record. Within vascular plants, there is compelling evidence for two major clades, which have been termed lycophytes (clubmosses) and euphyllophytes (seed plants, ferns, horsetails)...

  20. Plant volatiles mediate tritrophic interactions

    OpenAIRE

    Ninkovic, Velemir

    2002-01-01

    The effects of plant-plant interactions via volatiles (aerial allelopathy) on herbivores and their natural enemies were investigated. The model system consisted of four barley varieties, an aphid pest, Rhopalosiphum padi (L.), and a common aphid predator, ladybird, Coccinella septempunctata (L). Aerial allelopathy significantly affected plant leaf temperature and biomass allocation, favouring root growth during the vegetative period, the main period for development of R. padi populations in S...

  1. Glyphosate effect on plant rhizobacteria

    OpenAIRE

    Giraldo Duque, Judy Madelén

    2015-01-01

    Abstract: Results obtained from several studies suggest that the pre-seeding application of the widely used herbicide glyphosate can alter the microbial community of the rhizosphere of non-target plants, as well as soil processes mediated by microorganisms. Although this impact should be related to the response of weed plants to glyphosate application, little is known on the changes taking place in the microbial community of weed plant rhizosphere. A field and a greenhouse experiments were co...

  2. Power Plant- A Scientific Disaster

    Directory of Open Access Journals (Sweden)

    Dharmateja Bandlamudi, Sahithi Avirneni

    2013-05-01

    Full Text Available The present paper emphasisesthe society’s movement towards improvement of power sector as a pavement of luxury and on the benighted dark side of it. This produces the reasons for enchanting power plant as a scientific disaster. This paper gives the detailed list of effects caused by the power plants mainly on coal fired, nuclear and hydroelectric power plants, their adverse effects on environment and in turn human life.

  3. Investigation phytochimique de plantes alpines

    OpenAIRE

    Munari, Caroline

    2006-01-01

    As a part of our ongoing investigations of alpine plants from the Valley of Aoste (Italy), the methanol and dichloromethane extracts of 45 plants have been studied from a phytochemical view point. These species grow at altitudes from 2200 to 2700 meters in extreme habitat. Thus, 100 extracts were investigated for their free radical scavenging activity against DPPH and antifungal activities with different tests: against the plant pathogenic fungus Cladosporium cucumerinum by direct bioautograp...

  4. (Photosynthesis in intact plants)

    Energy Technology Data Exchange (ETDEWEB)

    1990-01-01

    Progress in the two years since the last renewal application has been excellent. We have made substantial contributions on both main fronts of the projects, and are particularly happy with the progress of our research on intact plants. The approach of basing our field work on a sound foundation of laboratory studies has enabled is to use methods which provide unambiguous assays of well characterized reactions. We have also made excellent progress in several laboratory studies which will have direct applications in future field work, and have introduced to the laboratory a range of molecular genetics techniques which will allow us to explore new options in the attempt to understand function at the level of molecular structure.

  5. Nuclear power plant

    International Nuclear Information System (INIS)

    Purpose: To prevent liquid wastes from being discharged out of the system by processing to recover them in the nuclear reactor and reusing them. Constitution: Discharge of liquid wastes to the surrounding atmosphere are completely eliminated by collecting floor drains, a part of processing water for the regeneration of liquid wastes, non-radioactive steam drains and laundry drains conventionally discharged so far out of the system, processing them in a concentrator, a desalter or the like into water of a high purity and extremely low radioactive concentration, storing the water in an exclusive storage tank and supplying it as a steam or supplementing water to each portion in the plant that requires water of such high purity and extremely low radioactivity. (Yoshihara, H.)

  6. Hanford Waste Vitrification Plant

    International Nuclear Information System (INIS)

    The Hanford Waste Vitrification Plant (HWVP) is being designed to immobilize pretreated Hanford high-level waste and transuranic waste in borosilicate glass contained in stainless steel canisters. Testing is being conducted in the HWVP Technology Development Project to ensure that adapted technologies are applicable to the candidate Hanford wastes and to generate information for waste form qualification. Empirical modeling is being conducted to define a glass composition range consistent with process and waste form qualification requirements. Laboratory studies are conducted to determine process stream properties, characterize the redox chemistry of the melter feed as a basis for controlling melt foaming and evaluate zeolite sorption materials for process waste treatment. Pilot-scale tests have been performed with simulated melter feed to access filtration for solids removal from process wastes, evaluate vitrification process performance and assess offgas equipment performance. Process equipment construction materials are being selected based on literature review, corrosion testing, and performance in pilot-scale testing. 3 figs., 6 tabs

  7. Qualification of in-core measurement signals in frame of core-surveillance system TOPRE at NPP J. Bohunice

    International Nuclear Information System (INIS)

    The TOPRE systems uses core exit thermocouples (T/C) and self powered neutron detector (SPND) strings together with connecting cable (background) extensively for continuous 3D-power distribution monitoring. T/C and SPND reliability, repeatability and accuracy have been very satisfactory. However it is important to detect any T/C and SPND malfunctions during operation, since a signal change caused by an undetected malfunction can lead to serious errors in the power-distribution developed by TOPRE. Some new procedures have been developed which are capable to qualify T/C and SPND signals based ion time behaviour of signal collection divided to some groups. Time behaviour is periodically archived from TOPRE database to TOPRE periodical archive during nonstationary operation processes (start-up, rod movement, shutdown,...). Graphical representation of each fresh SPND connecting cable current (background) time dependence shows temporary signal malfunction, which disappears after ca 50 effective days. Correlation between time dependence of given SPND signal and mean signal of arbitrary chosen signal collection during nonstationary operation process is also good measure of qualification. From archived signals a database for validation of in-core measurement signals is created. (author)

  8. TYPHONIUM FLAGELLIFORME: A MULTIPURPOSE PLANT

    Directory of Open Access Journals (Sweden)

    Singh Mankaran

    2013-03-01

    Full Text Available Typhonium flagelliforme is a prominent plant candidate from aroid family, endowing various curative properties against a variety of illness and infections. This tropical plant found in damp, shady habitats and population of south east asian countries used it as alternative curative health supplement. Traditionally, this plant is used as a alternative remedy for cancer. Also, antibacterial and antioxidant activities are well established. This plant has shown promising results as a cough suppressant, which can be helpful in various respiratory tract problems. This review focuses on various biological activities of Typhonium flagelliforme.

  9. SALT TOLERANCE OF CROP PLANTS

    Directory of Open Access Journals (Sweden)

    Hamdia, M. A

    2010-09-01

    Full Text Available Several environmental factors adversely affect plant growth and development and final yield performance of a crop. Drought, salinity, nutrient imbalances (including mineral toxicities and deficiencies and extremes of temperature are among the major environmental constraints to crop productivity worldwide. Development of crop plants with stress tolerance, however, requires, among others, knowledge of the physiological mechanisms and genetic controls of the contributing traits at different plant developmental stages. In the past 2 decades, biotechnology research has provided considerable insights into the mechanism of biotic stress tolerance in plants at the molecular level. Furthermore, different abiotic stress factors may provoke osmotic stress, oxidative stress and protein denaturation in plants, which lead to similar cellular adaptive responses such as accumulation of compatible solutes, induction of stress proteins, and acceleration of reactive oxygen species scavenging systems. Recently, the authores try to improve plant tolerance to salinity injury through either chemical treatments (plant hormones, minerals, amino acids, quaternary ammonium compounds, polyamines and vitamins or biofertilizers treatments (Asymbiotic nitrogen-fixing bacteria, symbiotic nitrogen-fixing bacteria and mycorrhiza or enhanced a process used naturally by plants to minimise the movement of Na+ to the shoot, using genetic modification to amplify the process, helping plants to do what they already do - but to do it much better."

  10. Elicitors in Plant Tissue Culture

    Directory of Open Access Journals (Sweden)

    R. Krishnamurthy

    2013-07-01

    Full Text Available Plants or Plant cells in vitro, show physiological and morphological response to microbial, physical or chemical factors which are known as ‘elicitors’. Elicitation is a process of induced or enhanced synthesis of secondary metabolites by the plants to ensure their survival persistence and competitiveness. The application of elicitors, which is currently the focus of research, has been considered as one of the most effective methods to improve the synthesis of secondary metabolites in medicinal plants. Plant secondary metabolites are unique sources for pharmaceuticals, food additives, flavours and other industrial materials. Accumulation of such metabolites often occurs in plants subjected to stresses including various elicitors or signal molecules. Commonly tested chemical elicitors are salicylic acid, methyl salicylate, bezoic acid, chitosan and so forth which affect production of phenolic compounds and activation of various defense-related enzymes in plants. Plants are challenged by a variety of biotic stresses like fungal, bacterial or viral infections. This lead to the great loss to a plant yield. Here we discuss the classification of elicitors, mechanism of elicitor, the use of elicitors and the different features of elicitors.

  11. Multispectral Image Processing for Plants

    Science.gov (United States)

    Miles, Gaines E.

    1991-01-01

    The development of a machine vision system to monitor plant growth and health is one of three essential steps towards establishing an intelligent system capable of accurately assessing the state of a controlled ecological life support system for long-term space travel. Besides a network of sensors, simulators are needed to predict plant features, and artificial intelligence algorithms are needed to determine the state of a plant based life support system. Multispectral machine vision and image processing can be used to sense plant features, including health and nutritional status.

  12. Ecological Effects of Allelopathic Plants

    DEFF Research Database (Denmark)

    Kruse, M.; Strandberg, M.; Strandberg, B.

    environment through spread of GM-plants or transgenes outside agricultural areas. The last chapter discuss GM-allelopathic plants in relation to the ecological risk assessment. Preface: This report is based on a literature review on allelopathy from an ecological impact point of view carried out in 1999. The...... allelopathy in these crops. It discusses the ecological effects of allelopathic plants in natural ecosystems and factors of importance for the effects of these plants are pointed out. Finally the report presents suggestions for an ecological risk assessment of crops with an enhanced release of allelochemicals...

  13. Bioinspired materials: Boosting plant biology

    Science.gov (United States)

    Scholes, Gregory D.; Sargent, Edward H.

    2014-04-01

    Chloroplasts with extended photosynthetic activity beyond the visible absorption spectrum, and living leaves that perform non-biological functions, are made possible by localizing nanoparticles within plant organelles.

  14. Uptake of nuclides by plants

    Energy Technology Data Exchange (ETDEWEB)

    Greger, Maria [Stockholm Univ. (Sweden). Dept. of Botany

    2004-04-01

    This review on plant uptake of elements has been prepared to demonstrate how plants take up different elements. The work discusses the nutrient elements, as well as the general uptake and translocation in plants, both via roots and by foliar absorption. Knowledge of the uptake by the various elements within the periodic system is then reviewed. The work also discusses transfer factors (TF) as well as difficulties using TF to understand the uptake by plants. The review also focuses on species differences. Knowledge necessary to understand and calculate plant influence on radionuclide recirculation in the environment is discussed, in which the plant uptake of a specific nuclide and the fate of that nuclide in the plant must be understood. Plants themselves determine the uptake, the soil/sediment determines the availability of the nuclides and the nuclides themselves can interact with each other, which also influences the uptake. Consequently, it is not possible to predict the nuclide uptake in plants by only analysing the nuclide concentration of the soil/substrate.

  15. Technologies for nuclear plant decommissioning

    International Nuclear Information System (INIS)

    After the commercial operation of a nuclear power plant has been shutdown, the plant enters a decommissioning phase where it is dismantled and removed. The Tokai Power Station was shutdown at the end of March 1998, followed by 'Fugen' and a light water reactor. The number of decommissioned plants in Japan is likely to increase in the future. Based on experience gained from the construction and maintenance of nuclear plants, Fuji Electric has developed techniques essential for decommissioning work. This paper describes recent technologies developed in this field, such as remote dismantling techniques for the reactor core and treatment and disposal techniques for the dismantled waste. (author)

  16. Phytozome Comparative Plant Genomics Portal

    Energy Technology Data Exchange (ETDEWEB)

    Goodstein, David; Batra, Sajeev; Carlson, Joseph; Hayes, Richard; Phillips, Jeremy; Shu, Shengqiang; Schmutz, Jeremy; Rokhsar, Daniel

    2014-09-09

    The Dept. of Energy Joint Genome Institute is a genomics user facility supporting DOE mission science in the areas of Bioenergy, Carbon Cycling, and Biogeochemistry. The Plant Program at the JGI applies genomic, analytical, computational and informatics platforms and methods to: 1. Understand and accelerate the improvement (domestication) of bioenergy crops 2. Characterize and moderate plant response to climate change 3. Use comparative genomics to identify constrained elements and infer gene function 4. Build high quality genomic resource platforms of JGI Plant Flagship genomes for functional and experimental work 5. Expand functional genomic resources for Plant Flagship genomes

  17. Uptake of nuclides by plants

    International Nuclear Information System (INIS)

    This review on plant uptake of elements has been prepared to demonstrate how plants take up different elements. The work discusses the nutrient elements, as well as the general uptake and translocation in plants, both via roots and by foliar absorption. Knowledge of the uptake by the various elements within the periodic system is then reviewed. The work also discusses transfer factors (TF) as well as difficulties using TF to understand the uptake by plants. The review also focuses on species differences. Knowledge necessary to understand and calculate plant influence on radionuclide recirculation in the environment is discussed, in which the plant uptake of a specific nuclide and the fate of that nuclide in the plant must be understood. Plants themselves determine the uptake, the soil/sediment determines the availability of the nuclides and the nuclides themselves can interact with each other, which also influences the uptake. Consequently, it is not possible to predict the nuclide uptake in plants by only analysing the nuclide concentration of the soil/substrate

  18. ITER LHe Plants Parallel Operation

    Science.gov (United States)

    Fauve, E.; Bonneton, M.; Chalifour, M.; Chang, H.-S.; Chodimella, C.; Monneret, E.; Vincent, G.; Flavien, G.; Fabre, Y.; Grillot, D.

    The ITER Cryogenic System includes three identical liquid helium (LHe) plants, with a total average cooling capacity equivalent to 75 kW at 4.5 K.The LHe plants provide the 4.5 K cooling power to the magnets and cryopumps. They are designed to operate in parallel and to handle heavy load variations.In this proceedingwe will describe the presentstatusof the ITER LHe plants with emphasis on i) the project schedule, ii) the plantscharacteristics/layout and iii) the basic principles and control strategies for a stable operation of the three LHe plants in parallel.

  19. Towards Multi Fuel SOFC Plant

    OpenAIRE

    Rokni, Masoud; Clausen, Lasse Røngaard; Bang-Møller, Christian

    2011-01-01

    Complete Solid Oxide Fuel Cell (SOFC) plants fed by several different fuels are suggested and analyzed. The plants sizes are about 10 kW which is suitable for single family house with needs for both electricity and heat. Alternative fuels such as, methanol, DME (Di-Methyl Ether) and ethanol are also considered and the results will be compared with the base plant fed by Natural Gas (NG). A single plant design will be suggested that can be fed with methanol, DME and ethanol whenever these fuels...

  20. Hybrid combined cycle power plant

    International Nuclear Information System (INIS)

    In case of re-powering the existing pressurised water nuclear power plants by the proposed HCCPP solution, we can increase the electricity output and efficiency significantly. If we convert a traditional nuclear power plant unit to a HCCPP solution, we can achieve a 3.2-5.5 times increase in electricity output and the achievable gross efficiency falls between 46.8-52% and above, depending on the applied solution. These figures emphasise that we should rethink our power plant technologies and we have to explore a great variety of HCCPP solutions. This may give a new direction in the development of nuclear reactors and power plants as well.(author)

  1. Owners of nuclear power plants

    International Nuclear Information System (INIS)

    The following list indicates percentage ownership of commercial nuclear power plants by utility companies as of December 1, 1979. The list includes all plants licensed to operate, under construction, docketed for NRC safety and envionmental reviews, or under NRC antitrust review. It does not include those plants announced but not yet under review or those plants formally cancelled. In many cases, ownership may be in the process of changing as a result of antitrust license conditions and hearings, altered financial conditions, changed power needs, and other reasons. However, this list reflects only those ownership percentages of which the NRC has been formally notified

  2. The plant-window system

    International Nuclear Information System (INIS)

    Power plant data, and the information that can be derived from it, provide the link to the plant through which the operations, maintenance and engineering staff understand and manage plant performance. The increasing use of computer technology in the U.S. nuclear power industry has greatly expanded the capability to obtain, analyze, and present data about the plant to station personnel. However, it is necessary to transform the vast quantity of available data into clear, concise, and coherent information that can be readily accessed and used throughout the plant. This need can be met by an integrated computer workstation environment that provides the necessary information and software applications, in a manner that can be easily understood and used, to the proper users throughout the plant. As part of a Cooperative Research and Development Agreement with the Electric Power Research Institute, the Oak Ridge National Laboratory has developed functional requirements for a Plant-Wide Integrated Environment Distributed On Workstations (Plant-Window) System. The Plant-Window System (PWS) can serve the needs of operations, engineering, and maintenance personnel at nuclear power stations by providing integrated data and software applications (e.g., monitoring, analysis, diagnosis, and control applications) within a common environment. The PWS requirements identify functional capabilities and provide guidelines for standardized hardware, software, and display interfaces to define a flexible computer environment that permits a tailored implementation of workstation capabilities and facilitates future upgrades

  3. Owners of nuclear power plants

    Energy Technology Data Exchange (ETDEWEB)

    Hudson, C.R.; White, V.S.

    1996-11-01

    Commercial nuclear power plants in this country can be owned by a number of separate entities, each with varying ownership proportions. Each of these owners may, in turn, have a parent/subsidiary relationship to other companies. In addition, the operator of the plant may be a different entity as well. This report provides a compilation on the owners/operators for all commercial power reactors in the United States. While the utility industry is currently experiencing changes in organizational structure which may affect nuclear plant ownership, the data in this report is current as of July 1996. The report is divided into sections representing different aspects of nuclear plant ownership.

  4. Owners of Nuclear Power Plants

    Energy Technology Data Exchange (ETDEWEB)

    Reid, R.L.

    2000-01-12

    Commercial nuclear power plants in this country can be owned by a number of separate entities, each with varying ownership proportions. Each of these owners may, in turn, have a parent/subsidiary relationship to other companies. In addition, the operator of the plant may be a different entity as well. This report provides a compilation on the owners/operators for all commercial power reactors in the United States. While the utility industry is currently experiencing changes in organizational structure which may affect nuclear plant ownership, the data in this report is current as of November 1999. The report is divided into sections representing different aspects of nuclear plant ownership.

  5. PLANTING PRINCIPLES OF ROOF GARDENS

    Directory of Open Access Journals (Sweden)

    Nizamettin KOÇ

    1998-02-01

    Full Text Available Planting on the roof gardens is rather different than that of ground level. Because, ecological conditions in these areas are artificial and they have some extreme conditions which are not suitable for plants. That is why, plants would be used in the planning, should be chosen from the varieties resistant to cold, windy and dry conditions. Additionally, large plants should be anchoraged and shaded againist to loosing much water. It Should be considered that carriying capacity of the roof whether is suitable for planning.

  6. Development of the merchant plant

    International Nuclear Information System (INIS)

    The co-authors of this paper are currently involved in over 1500 megawatts of merchant plant developments in the US. This paper will discuss the latest in combined cycle steam reheat ''H and G'' technology. Big improvements in heat rates along with substantial drop in installed cost will make this power cycle the leading merchant plant of the future. This paper will compare the actual present day performance and clearing price of a state-of-the-art merchant plant versus utility dispatch cost duration curves, known as ''system lambda''. Deregulation of the power market will ultimately provide an open market for these efficient plants to compete effectively against aging utility plants. Comparison of utility system heat rates versus merchant plant heat rates along with an increase need for generation capacity and forecasts of stable gas prices supports to the potential for a large scale building program of these high efficiency generators. This paper will also review the capacity crunch in the Northeast and Wisconsin and how problems with nuclear plants may accelerate the need for merchant plants. This paper will compare the required capacity for the population growth in the SERC Region and in Florida and how this will produce a potential ''hot bed'' for merchant plant development

  7. Principles of nuclear safety and operation reliability upgrading

    International Nuclear Information System (INIS)

    Safe operation of Nuclear Power Plants in Jaslovske Bohunice is of the highest priority of NPPs employees and the management. The management decided to improve the power plant safety to the level acceptable by international institutions, such as IAEA, WENRA, etc. The power plant initiated a systematic programme preparation, its evaluation by international missions, design process and implementation stage, which was successfully completed in the first half of 2000. (author)

  8. Calcium in plant cells

    Directory of Open Access Journals (Sweden)

    V. V. Schwartau

    2014-04-01

    Full Text Available The paper gives the review on the role of calcium in many physiological processes of plant organisms, including growth and development, protection from pathogenic influences, response to changing environmental factors, and many other aspects of plant physiology. Initial intake of calcium ions is carried out by Ca2+-channels of plasma membrane and they are further transported by the xylem owing to auxins’ attractive ability. The level of intake and selectivity of calcium transport to ove-ground parts of the plant is controlled by a symplast. Ca2+enters to the cytoplasm of endoderm cells through calcium channels on the cortical side of Kaspary bands, and is redistributed inside the stele by the symplast, with the use of Ca2+-АТPases and Ca2+/Н+-antiports. Owing to regulated expression and activity of these calcium transporters, calclum can be selectively delivered to the xylem. Important role in supporting calcium homeostasis is given to the vacuole which is the largest depo of calcium. Regulated quantity of calcium movement through the tonoplast is provided by a number of potential-, ligand-gated active transporters and channels, like Ca2+-ATPase and Ca2+/H+ exchanger. They are actively involved in the inactivation of the calcium signal by pumping Ca2+ to the depo of cells. Calcium ATPases are high affinity pumps that efficiently transfer calcium ions against the concentration gradient in their presence in the solution in nanomolar concentrations. Calcium exchangers are low affinity, high capacity Ca2+ transporters that are effectively transporting calcium after raising its concentration in the cell cytosol through the use of protons gradients. Maintaining constant concentration and participation in the response to stimuli of different types also involves EPR, plastids, mitochondria, and cell wall. Calcium binding proteins contain several conserved sequences that provide sensitivity to changes in the concentration of Ca2+ and when you

  9. Gas turbine cogeneration plant for textile dyeing plant in Italy

    International Nuclear Information System (INIS)

    This paper reports the information (i.e., notes on specific plant component weaknesses and defects, e.g., exchanger tube fouling, improper positioning of temperature probes, incorrect choice of flow valves, etc., and relative remedial actions) gained during a one year cogeneration plant debugging campaign at the Colorama textile dyeing plant in Italy. The cogeneration plant consists of a Solar Saturn MK III gas turbine (1,080 kw at terminals, 500 degrees C exhaust gas temperature); a double (steam and hot water) circuit waste heat boiler contemporaneously producing, with 100 degrees C supply water, 4 tonnes/h steam at 5 bars and 9 cubic meters/h of 20 to 80 degrees C hot water; and a 1,470 kVA generator operating at 3 kV connected by a 3kV/15kV transformer to the national grid. The plant is protected against fire by independent halon fire protection systems, one for the gas turbine plant, the other, for the control room. A modem connects the plant control and monitoring system with the firm which supplied the equipment. The plant operator cites an urgent national requirement for trained cogeneration equipment technical consultants and designers in order to better promote the use of innovative cogeneration technology by Italian industry

  10. Next Generation Geothermal Power Plants

    Energy Technology Data Exchange (ETDEWEB)

    Brugman, John; Hattar, Mai; Nichols, Kenneth; Esaki, Yuri

    1995-09-01

    A number of current and prospective power plant concepts were investigated to evaluate their potential to serve as the basis of the next generation geothermal power plant (NGGPP). The NGGPP has been envisaged as a power plant that would be more cost competitive (than current geothermal power plants) with fossil fuel power plants, would efficiently use resources and mitigate the risk of reservoir under-performance, and minimize or eliminate emission of pollutants and consumption of surface and ground water. Power plant concepts were analyzed using resource characteristics at ten different geothermal sites located in the western United States. Concepts were developed into viable power plant processes, capital costs were estimated and levelized busbar costs determined. Thus, the study results should be considered as useful indicators of the commercial viability of the various power plants concepts that were investigated. Broadly, the different power plant concepts that were analyzed in this study fall into the following categories: commercial binary and flash plants, advanced binary plants, advanced flash plants, flash/binary hybrid plants, and fossil/geothed hybrid plants. Commercial binary plants were evaluated using commercial isobutane as a working fluid; both air-cooling and water-cooling were considered. Advanced binary concepts included cycles using synchronous turbine-generators, cycles with metastable expansion, and cycles utilizing mixtures as working fluids. Dual flash steam plants were used as the model for the commercial flash cycle. The following advanced flash concepts were examined: dual flash with rotary separator turbine, dual flash with steam reheater, dual flash with hot water turbine, and subatmospheric flash. Both dual flash and binary cycles were combined with other cycles to develop a number of hybrid cycles: dual flash binary bottoming cycle, dual flash backpressure turbine binary cycle, dual flash gas turbine cycle, and binary gas turbine

  11. Plant Metabolomics: An Indispensable System Biology Tool for Plant Science.

    Science.gov (United States)

    Hong, Jun; Yang, Litao; Zhang, Dabing; Shi, Jianxin

    2016-01-01

    As genomes of many plant species have been sequenced, demand for functional genomics has dramatically accelerated the improvement of other omics including metabolomics. Despite a large amount of metabolites still remaining to be identified, metabolomics has contributed significantly not only to the understanding of plant physiology and biology from the view of small chemical molecules that reflect the end point of biological activities, but also in past decades to the attempts to improve plant behavior under both normal and stressed conditions. Hereby, we summarize the current knowledge on the genetic and biochemical mechanisms underlying plant growth, development, and stress responses, focusing further on the contributions of metabolomics to practical applications in crop quality improvement and food safety assessment, as well as plant metabolic engineering. We also highlight the current challenges and future perspectives in this inspiring area, with the aim to stimulate further studies leading to better crop improvement of yield and quality. PMID:27258266

  12. Are atomic power plants saver than nuclear power plants

    International Nuclear Information System (INIS)

    It is rather impossible to establish nuclear power plants against the resistance of the population. To prevail over this resistance, a clarification of the citizens-initiatives motives which led to it will be necessary. This is to say: It is quite impossible for our population to understand what really heappens in nuclear power plants. They cannot identify themselves with nuclear power plants and thus feel very uncomfortable. As the total population feels the same way it is prepared for solidarity with the citizens-initiatives even if they believe in the necessity of nuclear power plants. Only an information-policy making transparent the social-psychological reasons of the population for being against nuclear power plants could be able to prevail over the resistance. More information about the technical procedures is not sufficient at all. (orig.)

  13. Plant Metabolomics: An Indispensable System Biology Tool for Plant Science

    Science.gov (United States)

    Hong, Jun; Yang, Litao; Zhang, Dabing; Shi, Jianxin

    2016-01-01

    As genomes of many plant species have been sequenced, demand for functional genomics has dramatically accelerated the improvement of other omics including metabolomics. Despite a large amount of metabolites still remaining to be identified, metabolomics has contributed significantly not only to the understanding of plant physiology and biology from the view of small chemical molecules that reflect the end point of biological activities, but also in past decades to the attempts to improve plant behavior under both normal and stressed conditions. Hereby, we summarize the current knowledge on the genetic and biochemical mechanisms underlying plant growth, development, and stress responses, focusing further on the contributions of metabolomics to practical applications in crop quality improvement and food safety assessment, as well as plant metabolic engineering. We also highlight the current challenges and future perspectives in this inspiring area, with the aim to stimulate further studies leading to better crop improvement of yield and quality. PMID:27258266

  14. Environmental certificate to Salmisaari plants

    International Nuclear Information System (INIS)

    SFS-EN ISO 14001 certificate has been granted in October 2nd 2000 to the environmental systems of Salmisaari power plant area owned by Helsinki Energia. The certificate cowers power and district heat generation at the power plants of the Salmisaari area. The certified system will be used as the basis for the future environmental work. Salmisaari B is a combined heat and power plant, and Salmisaari A is a boiler plant generating district heat for use in winter. Both plants use coal as main fuel. Dusts and sulphur compounds are removed from the flue gases formed in combustion in desulphurisation plant. Development of the environmental system started in autumn 1997 by excursion to acquaint the environmental system of the Rauhalahti power plant. Development work started in spring 1998. External evaluations and the recording of the present situation by DNV (Det Norske Veritas) consulting services were carried out at the end of 1999. The inspection of the management was carried out in the beginning of 2000 and the auditing was made in May 2000. Auditing showed about ten faults or lacks in the system, which were repaired. DNV Certification Oy/AB carried out the certification. Certification granted in the beginning of October 2000, covers power and district heat generation of the Salmisaari plants, as well as all the operations and systems, such as power station, underground oil storages, coal storage and the Tammasaari coal and oil unloading docks and Kellosaari power plants, connected to them. Desulphurisation plant of Salmisaari has operated since 1987, and NOx emissions have been reduced since 1991 by improved coal combustion system. In Hanasaari power plant the combustion technology was renewed during reduction of NOx emissions in 1994

  15. Arbuscular Mycorrhizal Fungal Mediation of Plant-Plant Interactions in a Marshland Plant Community

    Directory of Open Access Journals (Sweden)

    Qian Zhang

    2014-01-01

    Full Text Available Obligate aerobic AMF taxa have high species richness under waterlogged conditions, but their ecological role remains unclear. Here we focused on AM fungal mediation of plant interactions in a marshland plant community. Five cooccurring plant species were chosen for a neighbor removal experiment in which benomyl was used to suppress AMF colonization. A Phragmites australis removal experiment was also performed to study its role in promoting AMF colonization by increasing rhizosphere oxygen concentration. Mycorrhizal fungal effects on plant interactions were different for dominant and subdominant plant species. AMF colonization has driven positive neighbor effects for three subdominant plant species including Kummerowia striata, Leonurus artemisia, and Ixeris polycephala. In contrast, AMF colonization enhanced the negative effects of neighbors on the dominant Conyza canadensis and had no significant impact on the neighbor interaction to the dominant Polygonum pubescens. AM colonization was positively related to oxygen concentration. P. australis increased oxygen concentration, enhanced AMF colonization, and was thus indirectly capable of influencing plant interactions. Aerobic AM fungi appear to be ecologically relevant in this wetland ecosystem. They drive positive neighbor interactions for subdominant plant species, effectively increasing plant diversity. We suggest, therefore, that AM fungi may be ecologically important even under waterlogged conditions.

  16. Plant defense against insect herbivores

    DEFF Research Database (Denmark)

    Fürstenberg-Hägg, Joel; Zagrobelny, Mika; Bak, Søren

    2013-01-01

    , defense compounds. These bioactive specialized plant defense compounds may repel or intoxicate insects, while defense proteins often interfere with their digestion. Volatiles are released upon herbivory to repel herbivores, attract predators or for communication between leaves or plants, and to induce...

  17. Our Human-Plant Connection

    Science.gov (United States)

    Clary, Renee; Wandersee, James

    2011-01-01

    It is relatively easy to incorporate plants into a curriculum and extend their use beyond the botany unit into other scientific arenas. There are numerous web-based resources for teachers, including the Human Flower Project (HFP) website, which offers numerous vignettes on all aspects of flowering plants. In addition to botany and invasive plant…

  18. Thirsty Plants in Arid Places

    Science.gov (United States)

    Schaffer, Linda; Kingsley, Karla V.

    2009-01-01

    In order to demonstrate how plants remove water from the soil and release it to the atmosphere, students compared open- and closed-growing systems using drought-tolerant and higher water requirement plants. Then, students designed a drought-tolerant garden demonstrating what they had learned. Through this experience, students not only learned…

  19. Uniquely identifying wheat plant structures

    Science.gov (United States)

    Uniquely naming wheat (Triticum aestivum L. em Thell) plant parts is useful for communicating plant development research and the effects of environmental stresses on normal wheat development. Over the past 30+ years, several naming systems have been proposed for wheat shoot, leaf, spike, spikelet, ...

  20. PLANT PRODUCTS AS ANTIMICROBIAL AGENTS

    OpenAIRE

    Ionela Daciana Ciocan; Ion Bara

    2007-01-01

    Plants produce a diverse array of secondary metabolites, many of which have antimicrobial activity.Some of this compounds are constitutive, existing in healthy plants in their biologically active forms. Others such as cyanogenic glycosides and glucosinolates, occur as inactive precursors and are activated in response to tissue damage or pathogen attack.