Department of Nuclear Energy International Atomic Energy Agency CONSIDERABLE EXPERIENCE HAS BEEN ACHIEVED WITH LMRs Development started in USA, USSR, the.

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Presentation transcript:

Department of Nuclear Energy International Atomic Energy Agency CONSIDERABLE EXPERIENCE HAS BEEN ACHIEVED WITH LMRs Development started in USA, USSR, the UK and France in late 1940s and early 1950s withtest reactorssuch as EBR-1 [produced world’s first nuclear electricity] in the USA, and BR- 2 in the USSRDevelopment started in USA, USSR, the UK and France in late 1940s and early 1950s with test reactors such as EBR-1 [produced world’s first nuclear electricity] in the USA, and BR- 2 in the USSR Experimental reactors such as EBR-2, Fermi and FFTF (USA), BR-10 and BOR-60 (USSR), Rapsodie (France), KNK-II (Germany), JOYO (Japan), FBTR (India), and DFR (UK) were constructed from the 1950s s, leading toExperimental reactors such as EBR-2, Fermi and FFTF (USA), BR-10 and BOR-60 (USSR), Rapsodie (France), KNK-II (Germany), JOYO (Japan), FBTR (India), and DFR (UK) were constructed from the 1950s s, leading to Demonstration or prototype fast reactorssuch as Phénix (France), PFR (UK), BN-350 (USSR-Kazakhstan), BN-600 (USSR-Russia), MONJU (Japan) and PFBR (India), andDemonstration or prototype fast reactors such as Phénix (France), PFR (UK), BN-350 (USSR-Kazakhstan), BN-600 (USSR-Russia), MONJU (Japan) and PFBR (India), and The 1200 MWefull-scaleSuperphénix (France) -- (shut down at end of 1998).The 1200 MWe full-scale Superphénix (France) -- (shut down at end of 1998). Total experience base with LMRs is 141 reactor-yrsTotal experience base with LMRs is 141 reactor-yrs

Department of Nuclear Energy International Atomic Energy Agency Various roles are foreseen for LMRs LMRs can contribute byLMRs can contribute by –traditional breeding of fissile material (Pu, U 233 ) –Pu incineration –transmutation / utilization of long lived nuclear waste (fission products and actinides) in reactors, orin reactors, or in sub-critical cores driven by spallation neutron source (ADS)in sub-critical cores driven by spallation neutron source (ADS)

Department of Nuclear Energy International Atomic Energy Agency LMR development is continuing in some countries –France:transmutation of long lived nuclear waste and incineration of Pu is investigated [CAPRA and CADRA projects], and demonstration in Phénix is planned –France: transmutation of long lived nuclear waste and incineration of Pu is investigated [CAPRA and CADRA projects], and demonstration in Phénix is planned –Japan:MONJU was shut down indefinitely in 1995 due to sodium leak in secondary circuit; design of 660 MWe demonstration FBR is ongoing; operation of JOYO experimental LMR continues for irradiation tests –Japan: MONJU was shut down indefinitely in 1995 due to sodium leak in secondary circuit; design of 660 MWe demonstration FBR is ongoing; operation of JOYO experimental LMR continues for irradiation tests –India:FBTR is in operation; construction scheduled to begin in 2001 for the 500 MWe Prototype Fast Breeder Reactor –India: FBTR is in operation; construction scheduled to begin in 2001 for the 500 MWe Prototype Fast Breeder Reactor –Russia:operation of BN-600 continues very successfully; work on one BN-800 unit is ongoing; incineration of Pu in BN-800 is possible; development continues on large sodium cooled designs, and on lead cooled BREST-300 reactor with passive safety –Russia: operation of BN-600 continues very successfully; work on one BN-800 unit is ongoing; incineration of Pu in BN-800 is possible; development continues on large sodium cooled designs, and on lead cooled BREST-300 reactor with passive safety –China:construction is underway for a 25 MWe experimental fast reactor [CEFR] –China: construction is underway for a 25 MWe experimental fast reactor [CEFR] –Rep. of Korea:150 MWe Kalimer plant is being designed -- construction foreseen after 2010 –Rep. of Korea: 150 MWe Kalimer plant is being designed -- construction foreseen after 2010

Department of Nuclear Energy International Atomic Energy Agency Lead-cooled Fast Reactor Pb-Bi coolant used in 8 Naval reactors in Russia for 40 yearsPb-Bi coolant used in 8 Naval reactors in Russia for 40 years Pb CharacteristicsPb Characteristics –Low neutron absorption (hence less activity) –Chemically inert to water and air –Boiling pt. 2020k, melting pt. 600k –Other chemical and physical properties similar to Pb-Bi New Design: Pb-cooled BRESTNew Design: Pb-cooled BREST –(U, Pu)N fuel (thermal conductivity ~10 times of oxide fuel) –No blanket for Breeding –Fuel is recycled to remove fp, and add UN; Pu not extracted/added –Negative void and temperature coefficients –Low power density –Pumps used for forced convection; high natural Circulation capability –Design simpler and cheaper than Na-cooled fast reactor.

Department of Nuclear Energy International Atomic Energy Agency