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AER Working Group „F“ Liblice Castle, Byšice, Czech republic 25-28 March 2008. Thorium fuel cycles in VVER-440 conditio n. Juraj BREZA 1,2 , Petr DAŘÍLEK 1 , Vladimír NEČAS 2 breza@vuje.sk, darilek@vuje.sk, vladimir.necas@stuba.sk. 1 VUJE Inc., Okružná 5, 91864 Trnava, Slovakia
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AER Working Group „F“Liblice Castle, Byšice, Czech republic25-28 March 2008 Thorium fuel cycles in VVER-440 condition Juraj BREZA1,2, Petr DAŘÍLEK1, Vladimír NEČAS2breza@vuje.sk, darilek@vuje.sk, vladimir.necas@stuba.sk 1VUJE Inc., Okružná 5, 91864 Trnava, Slovakia 2Slovak University of Technology, Faculty of Electrical Engineering and Information Technology, Ilkovičova 3, 81219 Bratislava, Slovakia VUJE , Inc., Okružná 5, 918 64 Trnava, Slovakia; FEI STU, Ilkovičova 3, 81219 Bratislava, Slovakia
CONTENTS • Motivation • Thorium fuel scenarios • Results • Conclusions VUJE , Inc., Okružná 5, 918 64 Trnava, Slovakia; FEI STU, Ilkovičova 3, 81219 Bratislava, Slovakia
MOTIVATION • Study of different thorium fuel cycles and its application on VVER-440 reactor • Plutonium transmutation under light water reactor conditions VUJE , Inc., Okružná 5, 918 64 Trnava, Slovakia; FEI STU, Ilkovičova 3, 81219 Bratislava, Slovakia
SCENARIOS Pu-Th MOX fuel cycle (VVER-440) ThOX Pu - all isotopes 9.74 wt% Pu (5.40 wt% Pu-239) STORAGE PuThOXFabrication VVER-440(PuThOX core) Reprocessing UOX U 1.24 wt% Pu FPMA0.1% Pu0.1% U UOXFabrication VVER-440(UOX core) URT 4.2 wt% U-235 PuThOX Waste Enriched U VUJE , Inc., Okružná 5, 918 64 Trnava, Slovakia; FEI STU, Ilkovičova 3, 81219 Bratislava, Slovakia
SCENARIOS U-Pu-Th MOX cycle ThOX Pu - all isotopes U - all isotopes UPuThOXFabrication VVER-440(UPuThOX core) STORAGE Reprocessing (U,Pu,Th)OX FPMAPu0.1% U UOXFabrication VVER-440(UOX core) Wastes URT 4.2% U-235 FPMA0.1% Pu0.1% U U UOX Reprocessing VUJE , Inc., Okružná 5, 918 64 Trnava, Slovakia; FEI STU, Ilkovičova 3, 81219 Bratislava, Slovakia
COMPUTATION MODEL Model of VVER-440 assembly VUJE , Inc., Okružná 5, 918 64 Trnava, Slovakia; FEI STU, Ilkovičova 3, 81219 Bratislava, Slovakia
INPUT DATA target burnup:50 GWd/tHM core cycle:320 days, 5 years VUJE , Inc., Okružná 5, 918 64 Trnava, Slovakia; FEI STU, Ilkovičova 3, 81219 Bratislava, Slovakia
RESULTS VUJE , Inc., Okružná 5, 918 64 Trnava, Slovakia; FEI STU, Ilkovičova 3, 81219 Bratislava, Slovakia
CONCLUSIONS • UPuThOX equilibrium cycle offers higher Pu transmutation ratio; needs less UOX reactors; lower amount of plutonium in separation – lower proliferation risk • UPuThOX produces the least amount of MAs • Futher development of Th fuel cycles is needed VUJE , Inc., Okružná 5, 918 64 Trnava, Slovakia; FEI STU, Ilkovičova 3, 81219 Bratislava, Slovakia
Thank you for your attention VUJE , Inc., Okružná 5, 918 64 Trnava, Slovakia; FEI STU, Ilkovičova 3, 81219 Bratislava, Slovakia