Safety And Operating Experience At Ebr Ii
DOWNLOAD
Download Safety And Operating Experience At Ebr Ii PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Safety And Operating Experience At Ebr Ii book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Safety And Operating Experience At Ebr Ii
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1981
Safety And Operating Experience At Ebr Ii written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with categories.
EBR-II is a small LMFBR power plant that has performed safely and reliably for 16 years. Much has been learned from operating it to facilitate the design, licensing, and operation of large commercial LMFBR power plants in the US. EBR-II has been found relatively easy to keep in conformity with evolving safety requirements, largely because of inherent safety features of the plant. Such features reduce dependence on active safety systems to protect against accidents. EBR-II has experienced a number of plant-transient incidents, some planned, others inadvertent; none has resulted in any significant plant damage. The operating experience with EBR-II has led to the formulation of an Operational Reliability Test Program (ORTP), aimed at showing inherently safe performance of fuel and plant systems.
Safety Implications From 20 Years Of Operating Experience At Ebr Ii
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1985
Safety Implications From 20 Years Of Operating Experience At Ebr Ii written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.
EBR-II recently passed a major milestone in its operating history, 20 years of operation on August 13, 1984. The plant has gone through three major program phases during this time and is now entering a fourth. Those are: (1) demonstration of the feasibility of a complete LMFBR power plant, including on-site reprocessing of metal fuel, (2) irradiation testing of fuels and materials to support core and fuel design for CRBR and FFTF, (3) operational-safety testing to establish and demonstrate the inherent safety of LMFBRs and now, (4) the integration of this technology into demonstration of the integral fast reactor (IFR) concept. As EBR-II has progressed through these phases, much has been learned that is relevant to fast-reactor safety.
Lmfbr Operational Safety
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1978
Lmfbr Operational Safety written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.
The mission of the Experimental Breeder Reactor II (EBR-II) has evolved from that of a small LMFBR demonstration plant to a major irradiation-test facility. Because of that evolution, many operational-safety issues have been encountered. The paper describes the EBR-II operational-safety experience in four areas: protection-system design, safety-document preparation, tests of off-normal reactor conditions, and tests of elements with breached cladding.
Ebr Ii
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1978
Ebr Ii written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.
Experimental Breeder Reactor II (EBR-II) is an unmoderated, sodium-cooled reactor with a design power of 62.5 MWt. The primary cooling system is a submerged-pool type. The early operation of the reactor successfully demonstrated the feasibility of a sodium-cooled fast breeder reactor operating as an integrated reactor, power plant, and fuel-processing facility. In 1967, the role of EBR-II was reoriented from a demonstration plant to an irradiation facility. Many changes have been made and are continuing to be made to increase the usefulness of EBR-II for irradiation and safety tests. A review of EBR-II's operating history reveals a plant that has demonstrated high availability, stable and safe operating characteristics, and excellent performance of sodium components. Levels of radiation exposure to the operating and maintenance workers have been low; and fission-gas releases to the atmosphere have been minimal. Driver-fuel performance has been excellent. The repairability of radioactive sodium components has been successfully demonstrated a number of times. Recent highlights include installation and successful operation of (1) the hydrogen-meter leak detectors for the steam generators, (2) the cover-gas-cleanup system and (3) the cesium trap in the primary sodium. Irradiations now being conducted in EBR-II include the run-beyond-cladding breach fuel tests for mixed-oxide and carbide elements. Studies are in progress to determine EBR-II's capability for conducting important ''operational safety'' tests. These tests would extend the need and usefulness of EBR-II into the 1980's.
Operational Safety Advantages Of Lmfbr S
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1982
Operational Safety Advantages Of Lmfbr S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with categories.
LMFBR's contain many inherent characteristics that simplify control and improve operating safety and reliability. The EBR-II design is such that good advantage was taken of these characteristics, resulting in a vary favorable operating history and allowing for a program of off-normal testing to further demonstrate the safe response of LMFBR's to upsets. The experience already gained, and that expected from the future testing program, will contribute to further development of design and safety criteria for LMFBR's. Inherently safe characteristics are emphasized and include natural convective flow for decay heat removal, minimal need for emergency power and a large negative reactivity feedback coefficient. These characteristics at EBR-II allow for ready application of computer diagnosis and control to demonstrate their effectiveness in response to simulated plant accidents. This latter testing objective is an important part in improvements in the man-machine interface. (MMI).
Operational Safety Testing Experience At Ebr Ii
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1979
Operational Safety Testing Experience At Ebr Ii written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with categories.
Operation of EBR-II has required that issues of safety and reliability be continually addressed. This has been necessary not only to support routine operation, but also to support test programs that bear upon safety. Major issues are: (1) operability of fuel elements with breached cladding (local fault prevention); (2) assurance of adequate convective cooling upon loss of pumping power (decay heat removal); and (3) demonstration of benign response of fuel-elements and subassemblies to protected overpower transients (shutdown system margin and reliability. Test programs to address these issues at EBR-II are described. Particular emphasis is given to the potential capability at EBR-II for mild transient testing, consistent with its role in addressing LOA-1 (line of assurance one) safety issues.
Nuclear Safety
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1970
Nuclear Safety written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Nuclear engineering categories.
Demonstration Of Passive Safety Features In Ebr Ii
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1987
Demonstration Of Passive Safety Features In Ebr Ii written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
Two tests of great importance to the design of future commercial nuclear power plants were carried out in the Experimental Breeder Reactor-II on April 3, 1986. These tests, (viewed by about 60 visitors, including 13 foreign LMR specialists) were a loss of flow without scram and a loss of heat sink without scram, both from 100% initial power. In these tests, inherent feedback shut the reactor down without damage to the fuel or other reactor components. This resulted primarily from advantageous characteristics of the metal driver fuel used in EBR-II. Work is currently underway at EBR-II to develop a control strategy that promotes inherent safety characteristics, including survivability of transient overpower accidents. In parallel, work is underway at EBR-II on the development of state-of-the-art plant diagnostic techniques.
Operating And Test Experience Of Ebr Ii
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1991
Operating And Test Experience Of Ebr Ii written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
EBR-2 has operated for 27 years, the longest for any Liquid Metal Reactor (LMR) power plant. During that time, much has been learned about successful LMR operation and design. The basic lesson is that conversatism in design can pay significant dividends in operating reliability. Furthermore, such conservatism need not mean high cost. The EBR-2 system emphasizes simplicity, minimizing the number of valves in the heat transport system, for example, and simplifying the primary heat-transport-system layout. Another lesson is that emphasizing reliability of the steam generating system at the sodium-water interface (by using duplex tubes in the case of EBR-2) has been well worth the higher initial costs; no problems with leakage have been encountered in EBR-2's operating history. Locating spent fuel storage in the primary tank and providing for decay heat removal by natural connective flow have also been contributors to EBR-2's success. The ability to accommodate loss of forced cooling or loss of heat sink passively has resulted in benefits for simplification, primarily through less reliance on emergency power and in not requiring the secondary sodium or steam systems to be safety grade. Also, the piped-pool '' arrangement minimizes thermal stress to the primary tank and enhances natural convective flow. These benefits have been realized through a history of operation that has seen EBR-2 evolve through four major phases in its test programs, culminating in its present mission as the Integral Fast Rector (IFR) prototype. 20 refs., 8 figs., 1 tab.
Ebr Ii
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1985
Ebr Ii written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.
Experimental Breeder Reactor No. 2 (EBR-II) is an unmoderated, sodium-cooled reactor with a design power of 62.5 MWt. For the last 20 years EBR-II has operated safely, has demonstrated stable operating characteristics, has shown excellent performance of its sodium components, and has had an excellent plant factor. These years of operating experience provide a valuable resource to the nuclear community for the development and design of future liquid metal fast reactors. This report provides a brief description of the EBR-II plant and its early operating experience, describes some recent problems of interest to the nuclear community, and also mentions some of the significant operating achievements of EBR-II. Finally, a few words and speculations on EBR-II's future are offered. 4 figs., 1 tab.