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PRISM (Power Reactor Innovative Small Module, sometimes S-PRISM from SuperPRISM) is the name of a nuclear power plant design by GE Hitachi Nuclear Energy (GEH). The S-PRISM represents GEH's Generation IV reactor solution to closing the nuclear fuel cycle and is also part of its Advanced Recycling Center (ARC) proposition〔(Testimony to U.S. Congress )〕 to U.S. Congress to deal with nuclear waste.〔(GE Energy press release. June 18, 2009 )〕 S-PRISM is a commercial implementation of the Integral Fast Reactor developed by Argonne National Laboratory between 1984 and 1994. It is a sodium-cooled fast breeder reactor, based on the Experimental Breeder Reactor II (EBR-II) design, scaled up by a factor of ten. The design utilizes reactor modules, each having a power output of 311 MWe, to enable factory fabrication at low cost. In an identical fashion to the EBR-II that it is based on, the reactor would transition to a much lower power level whenever temperatures rise significantly, moreover the reactor vessel modules are pool type, as opposed to loop type, with the pool conferring substantial thermal inertia and the final key safety feature includes a "RVACS", which is a passive reactor vessel air cooling system to remove decay heat. These safety systems are passive and therefore always operate and are to prevent core damage in a Loss of coolant accident where no other means of heat removal are available. ==Integral fast reactor== (詳細はArgonne National Laboratory in Idaho Falls, Idaho and was the intended successor to the Experimental Breeder Reactor II, which achieved first criticality in 1965 and ran for 30 years. The Integral Fast Reactor project was shut down by the U.S. Congress in 1994. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「PRISM (reactor)」の詳細全文を読む スポンサード リンク
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