Design of ultralong-cycle fast reactor employing breed-and-burn strategy
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- Design of ultralong-cycle fast reactor employing breed-and-burn strategy
- Tak, Taewoo; Lee, Deokjung; Kim, T. K.
- Breed and burn; Ultralong-cycle fast reactor
- Issue Date
- AMER NUCLEAR SOC
- NUCLEAR TECHNOLOGY, v.183, no.3, pp.427 - 435
- A new design of ultralong-cycle fast reactor (UCFR) with power rate of 1000 MW(electric) has been developed based on the strategy of breed and burn. The bottom region of the core with low-enriched uranium plays a role of igniter of the core burning and the upper natural uranium region acts as a blanket for breeding. Fissile materials are bred in the blanket and the active core moves upward at a speed of 5.0 cm/year. Through the core depletion calculation using Monte Carlo code McCARD, it is confirmed that a full-power operation of 60 years without refueling is feasible with respect to nuclear isotopics and criticality. Core performance characteristics have been evaluated in terms of axial/radial power shapes, reactivity feedback coefficients, etc. This design will serve as a base model for further design study of UCFRs using light water reactor spent fuels in the blanket region.
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