WJNST  Vol.5 No.4 , October 2015
Primary Breeding Ratio Analysis of an Improved Supercritical Water Cooled Fast Reactor
Author(s) Zijing Liu1,2*, Jinsen Xie1,2, Lihua He1
ABSTRACT
The purpose of the study is to analyze the breeding ratio of a supercritical water cooled fast reactor (SCFR) and to increase the breeding core of SCFR. The sensitivities of assembly parameters, core arrangements and fuel nuclide components to the breeding ratio are analyzed. In assembly parameters, the seed fuel rod diameter has higher sensitivities to the conversion ratio (CR) than the coolant tube diameter in blanket. Increasing heavy metal fraction is good to CR improvement. The CR of SCFR also increases with a reasonable core arrangement and Pu isotope mass fraction reduction in fuel, which can achieve more negative coolant void reactivity coefficient at the same time. The breeding ratio of SCFR is 1.03128 with a new core arrangement. And the coolant void reactivity coefficient is negative, which achieves a fuel breeding in initial fuel cycle.

Cite this paper
Liu, Z. , Xie, J. and He, L. (2015) Primary Breeding Ratio Analysis of an Improved Supercritical Water Cooled Fast Reactor. World Journal of Nuclear Science and Technology, 5, 253-264. doi: 10.4236/wjnst.2015.54025.
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