TRIGA is a swimming pool reactor that can be installed without a containment building, and is designed for research and testing use by scientific institutions and universities for purposes such as undergraduate and graduate education, private commercial research, non-destructive testing and isotope production.
The TRIGA reactor uses uranium zirconium hydride (UZrH) fuel, which has a large, prompt negative fuel temperature coefficient of reactivity, meaning that as the temperature of the core increases, the reactivity rapidly decreases. Because of this unique feature, it has been safely pulsed at a power of up to 22,000 megawatts.[1] The hydrogen in the fuel is bound in the uranium zirconium hydride crystal structure with a vibrational energy of 0.14eV.[2] When the core is hot, these levels fill and transfer energy to any cooler neutrons making them hot and, therefore, less reactive. TRIGA was originally designed to be fueled with highly enriched uranium, but in 1978 the US Department of Energy launched its Reduced Enrichment for Research Test Reactors program, which promoted reactor conversion to low-enriched uranium fuel. [3][4]
The TRIGA was developed to be a reactor that, in the words of Edward Teller, "could be given to a bunch of high school children to play with without any fear that they would get hurt."[5] Teller headed a group of young nuclear physicists in San Diego in the summer of 1956 to design an inherently safe reactor which could not, by its design, suffer from a meltdown. The design was largely the suggestion of Freeman Dyson. The prototype for the TRIGA nuclear reactor (TRIGA Mark I) was commissioned on 3 May 1958 on the General Atomics campus in San Diego and operated until shut down in 1997. It has been designated as a nuclear historic landmark by the American Nuclear Society.
TRIGA International, a joint venture between General Atomics and CERCA [fr] — then a subsidiary of AREVA of France — was established in 1996. Since then, all TRIGA fuel assemblies have been manufactured at CERCA's plant in Romans-sur-Isère, France.
The TRIGA Power System (TPS) is a proposed small power plant and heat source, based upon the TRIGA reactor and its unique uranium zirconium hydride fuel, with a power output of 64 MWth / 16 MWe.[7][8]
^Triga Power System: A Passive Safe Co-Generation Unit for Electric Power and Low Temperature Heat, Small Reactors for Low Temperature Heat Applications, IAEA-TECDOC-463 (International Atomic Energy Agency, Vienna, 1988) pp. 45-55
References
Edward Teller (2001). Memoirs: A Twentieth-Century Journey in Science and Politics. Perseus Publishing.
External links
General Atomics official TRIGA website
July 27, 2023
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This article is about a nuclear reactor For ancient three horse chariot see Trigarium TRIGA Training Research Isotopes General Atomics is a class of nuclear research reactor designed and manufactured by General Atomics The design team for TRIGA which included Edward Teller was led by the physicist Freeman Dyson Picture of a TRIGA reactor core The blue glow is caused by Cherenkov radiation Contents 1 Design 2 History 3 See also 4 Notes 5 References 6 External linksDesign EditTRIGA is a swimming pool reactor that can be installed without a containment building and is designed for research and testing use by scientific institutions and universities for purposes such as undergraduate and graduate education private commercial research non destructive testing and isotope production The TRIGA reactor uses uranium zirconium hydride UZrH fuel which has a large prompt negative fuel temperature coefficient of reactivity meaning that as the temperature of the core increases the reactivity rapidly decreases Because of this unique feature it has been safely pulsed at a power of up to 22 000 megawatts 1 The hydrogen in the fuel is bound in the uranium zirconium hydride crystal structure with a vibrational energy of 0 14eV 2 When the core is hot these levels fill and transfer energy to any cooler neutrons making them hot and therefore less reactive TRIGA was originally designed to be fueled with highly enriched uranium but in 1978 the US Department of Energy launched its Reduced Enrichment for Research Test Reactors program which promoted reactor conversion to low enriched uranium fuel 3 4 History Edit A TRIGA Mark II taken into use at Helsinki University of Technology in 1962 by the Finnish President Urho Kekkonen The TRIGA was developed to be a reactor that in the words of Edward Teller could be given to a bunch of high school children to play with without any fear that they would get hurt 5 Teller headed a group of young nuclear physicists in San Diego in the summer of 1956 to design an inherently safe reactor which could not by its design suffer from a meltdown The design was largely the suggestion of Freeman Dyson The prototype for the TRIGA nuclear reactor TRIGA Mark I was commissioned on 3 May 1958 on the General Atomics campus in San Diego and operated until shut down in 1997 It has been designated as a nuclear historic landmark by the American Nuclear Society Mark II Mark III and other variants of the TRIGA design have subsequently been produced and a total of 33 TRIGA reactors have been installed at locations across the United States Those that remain operational continue to be upgraded modernized 6 A further 33 reactors have been installed in other countries Many of these installations were prompted by US President Eisenhower s 1953 Atoms for Peace policy which sought to extend access to nuclear physics to countries in the American sphere of influence Consequently TRIGA reactors can be found in a total of 24 countries including Austria Bangladesh Brazil Congo Colombia England Finland Germany Taiwan Japan South Korea Italy Indonesia Malaysia Mexico Morocco Philippines Puerto Rico Romania Slovenia Thailand Turkey and Vietnam TRIGA International a joint venture between General Atomics and CERCA fr then a subsidiary of AREVA of France was established in 1996 Since then all TRIGA fuel assemblies have been manufactured at CERCA s plant in Romans sur Isere France Some of the main competitors to General Atomics in the supply of research reactors are Korea Atomic Energy Research Institute KAERI of Korea and INVAP of Argentina The TRIGA Power System TPS is a proposed small power plant and heat source based upon the TRIGA reactor and its unique uranium zirconium hydride fuel with a power output of 64 MWth 16 MWe 7 8 See also EditList of commercial nuclear reactors List of nuclear research reactors Hydrogen moderated self regulating nuclear power moduleNotes Edit TRIGA Nuclear Reactors General Atomics TRIGA Nuclear Reactors General Atomics Argonne National Laboratory RERTR Radiological Threat Reduction Program Retrieved 2013 12 09 Global Threat Reduction Initiative Strategic Plan January 2009 PDF Retrieved 16 February 2018 Teller 2001 p 423 New Console Installed at U s Triga Reactor 29 October 2020 UxC webpage about the TRIGA Power System Triga Power System A Passive Safe Co Generation Unit for Electric Power and Low Temperature Heat Small Reactors for Low Temperature Heat Applications IAEA TECDOC 463 International Atomic Energy Agency Vienna 1988 pp 45 55References EditEdward Teller 2001 Memoirs A Twentieth Century Journey in Science and Politics Perseus Publishing External links EditGeneral Atomics official TRIGA website Retrieved from https en wikipedia org w index php title TRIGA amp oldid 1106778207, wikipedia, wiki, book, books, library,
