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자료유형
학술저널
저자정보
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제47권 제5호
발행연도
2015.1
수록면
559 - 566 (8page)

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The thermalehydraulic characteristics for the CANadian Deuterium Uranium Flexible(CANFLEX)-burnable poison (BP) fuel channel, which is loaded with a BP at the center ringbased on the CANFLEX-RU (recycled uranium) fuel channel, are evaluated and comparedwith that of standard 37-element and CANFLEX-NU (natural uranium) fuel channels. Thedistributions of fuel temperature and critical channel power for the CANFLEX-BP fuelchannel are calculated using the NUclear Heat Transport CIRcuit ThermohydraulicsAnalysis Code (NUCIRC) code for various creep rate and burnup. CANFLEX-BP fuel channelhas been revealed to have a lower fuel temperature compared with that of a standard 37-element fuel channel, especially for high power channels. The critical channel power ofCANFLEX-BP fuel channel has increased by about 10%, relative to that of a standard 37-element fuel channel for 380 channels in a core, and has higher value relative to that ofthe CANFLEX-NU fuel channel except the channels in the outer core. This study has shownthat the use of a BP is feasible to enhance the thermal performance by the axial heat fluxdistribution, as well as the improvement of the reactor physical safety characteristics, andthus the reactor safety can be improved by the use of BP in a CANDU reactor.

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