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Safety Aspects Of Forced Flow Cooldown Transients In Modular High Temperature Gas Cooled Reactors
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Book Synopsis Safety Aspects of Forced Flow Cooldown Transients in Modular High Temperature Gas-cooled Reactors by :
Download or read book Safety Aspects of Forced Flow Cooldown Transients in Modular High Temperature Gas-cooled Reactors written by and published by . This book was released on 1992 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: During some of the design basis accidents in Modular High Temperature Gas Cooled Reactors (MHTGRs) the main Heat Transport System (HTS) and the Shutdown Cooling System (SCS), are assumed to have failed. Decay heat is then removed by the passive Reactor Cavity Cooling System (RCCS) only. If either forced flow cooling system becomes available during such a transient, its restart could significantly reduce the down-time. This paper uses the THATCH code to examine whether such restart, during a period of elevated core temperatures, can be accomplished within safe limits for fuel and metal component temperatures. If the reactor is scrammed, either system can apparently be restarted at any time, without exceeding any safe limits. However, under unscrammed conditions a restart of forced cooling can lead to recriticality, with fuel and metal temperatures significantly exceeding the safety limits.
Book Synopsis Modular High-temperature Gas-cooled Reactor Short-term Thermal Response to Flow and Reactivity Transients by :
Download or read book Modular High-temperature Gas-cooled Reactor Short-term Thermal Response to Flow and Reactivity Transients written by and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The research reported here has been conducted at the Oak Ridge National Laboratory for the Nuclear Regulatory Commission's Division of Regulatory Applications of the Office of Nuclear Regulatory Research. The short-term thermal response of the Modular High-Temperature Gas-Cooled Reactor (MHTGR) is analyzed for a range of flow and reactivity transients. These transients include loss of forced circulation without scram, spurious withdrawal of a control rod group, moisture ingress, control rod and control rod group ejections, and a rapid core cooling event. For each event analyzed, an event description, a discussion of the analysis approach and assumptions, and results are presented. When possible, results of these analyses are compared with those presented by the designers in the MHTGR Preliminary Safety Information Document and in the MHTGR Probabilistic Risk Assessment. The importance of inherent safety features is illustrated, and conclusions are presented regarding the safety performance of the MHTGR. Recommendations are made for a more in-depth examination of MHTGR response for some of the analyzed transients. The coupled heat transfer-neutron kinetics model is described in detail in Appendix A.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1993 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalogue, United States Public Documents by :
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1993-11 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Hydraulics of Advanced Steam Generators and Heat Exchangers by : Y. A. Hassan
Download or read book Thermal Hydraulics of Advanced Steam Generators and Heat Exchangers written by Y. A. Hassan and published by . This book was released on 1994 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-temperature Gas-cooled Reactor Safety Studies for the Division of Reactor Safety Research Quarterly Progress Report by :
Download or read book High-temperature Gas-cooled Reactor Safety Studies for the Division of Reactor Safety Research Quarterly Progress Report written by and published by . This book was released on 1979 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1993 with total page 1198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Passive Safety Characteristics of Modular High Temperature Gas-cooled Reactor Fuel Elements by :
Download or read book The Passive Safety Characteristics of Modular High Temperature Gas-cooled Reactor Fuel Elements written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: High-Temperature Gas-Cooled Reactors (HTGR) in both the US and West Germany use an all-ceramic, coated fuel particle to retain fission products. Data from irradiation, postirradiation examinations and postirradiation heating experiments are used to study the performance capabilities of the fuel particles. The experimental results from fission product release tests with HTGR fuel are discussed. These data are used for development of predictive fuel performance models for purposes of design, licensing, and risk analyses. During off normal events, where temperatures may reach up to 1600°C, the data show that no significant radionuclide releases from the fuel will occur.
Book Synopsis High-temperature Gas-cooled Reactor Safety Studies for the Division of Reactor Safety Research by :
Download or read book High-temperature Gas-cooled Reactor Safety Studies for the Division of Reactor Safety Research written by and published by . This book was released on 1980 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of Depressurized Loss-of-forced Cooling Transients by HERA. by :
Download or read book Analysis of Depressurized Loss-of-forced Cooling Transients by HERA. written by and published by . This book was released on 1991 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Modular High-Temperature Gas-Cooled Reactor (MHTGR) is one of the next generation reactors, which has passive safety features. Among these safety features is the ability to withstand a depressurized, loss-of-forced cooling of the reactor without release of fission products from the primary containment. In order to assess the capability of the MHTGR to withstand this type of accident condition, the thermal behavior of the reactor core must be well understood. To accomplish this, we have employed the HElium cooled Reactor Analysis code (HERA) to study the MHTGR under these conditions. Our analysis will demonstrate that the MHTGR is capable of withstanding a depressurized loss-of-forced cooling, even under worst case circumstances. 7 refs., 14 figs., 5 tabs.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1993 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Gas-cooled Reactor Safety Problems by :
Download or read book Investigation of Gas-cooled Reactor Safety Problems written by and published by . This book was released on 1961-04 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A review of the safety aspects of gas-cooled power reactors has been made. The survey indicated that the most severe accidents result primariliy from primary system component failures. Such accidents (1) release fission products to the primary coolant and (2) may cause damage to the reactor core. Transients caused by inadvertent reactivity additions are generally minor, since these are limited by strong negative fuel temperature coefficients, large core heat capacities, and the long neutron lifetimes characteristic of most gas-cooled reactors."--Abstract.
Book Synopsis Regulatory and Technical Reports (abstract Index Journal). by : U.S. Nuclear Regulatory Commission. Regulatory Publications Branch
Download or read book Regulatory and Technical Reports (abstract Index Journal). written by U.S. Nuclear Regulatory Commission. Regulatory Publications Branch and published by . This book was released on 1994 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book China written by World Bank and published by World Bank Publications. This book was released on 1993 with total page 1422 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Republic of Korea's industrial policy has directed that nation's economy through nearly three decades of spectacular growth. But the authors of this paper maintain that this policy is showing signs of being outmoded. The time has come, the authors argue, for the Korean government to stop managing the economy's structural development and to redefine the responsibilities of business and government. Under this proposed compact, the allocation of resources would shift from the government to the private industrial and financial sectors. The transformation of the government bureaucracy from an ad hoc policy role to one of a transparent and predictable regulator is a key to the success of this undertaking. These new directions would present the government with enormous challenges. Greater competitive discipline and regulatory oversight would be required. While dealing with the complexities of the transition, the government would have to maintain macroeconomic stability and the momentum of savings and investment. For comparison, the study examines the industrial economies of France, Germany, Japan, and the United States, which underwent similar shifts.
Book Synopsis A Safety Study of Modular Pebble Bed High Temperature Gas Cooled Reactors for Process Heat Applications by : James Del Favero
Download or read book A Safety Study of Modular Pebble Bed High Temperature Gas Cooled Reactors for Process Heat Applications written by James Del Favero and published by . This book was released on 1983 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal and Flow Design of Helium-cooled Reactors by : Gilbert Melese
Download or read book Thermal and Flow Design of Helium-cooled Reactors written by Gilbert Melese and published by . This book was released on 1984 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This source book provides both an overview of gas-cooled reactors and a detailed look at the high-temperature gas-cooled reactor (HTGR). Taking a worldwide perspective, this book reviews the early development of the HTGR and explores potential future development and applications.
