Improved Core Design of the Supercritical Water-Cooled Reactor CSR1000

摘要

Based on conceptual design of CSR1000, the FA design is improved, and an improved conceptual design of CSR1000 core is proposed. Steady state performance of the proposed core is then studied by the code SNTA. The improved FA design uses fuel with three different enrichments and the fuel average enrichment is 7.8%. The improved core design adopts a 2-pass flow scheme, 3-batch fuel management with low-leakage fuel loading patterns, and a reactivity control method via 124 control rods and burnable poison Er_2O_3. This study shows that the improved design satisfies all of the design criteria, and the refueling cycle of CSR1000 core can be extended effectively to 580EFPD.