内冷式气冷快堆模拟设计及其中子学参数理论计算

Preliminary Calculation of Neutral Parameters of Internal Cooling Gas-Cooled Fast Reactors

模拟设计了一种内冷式的气冷快堆,理论计算了堆芯的中子学主要参数。通过堆芯物理分析表明:选择合适的燃料富集度可以使堆芯处于临界运行;该堆的中子能谱符合快堆要求;中子通量和堆芯功率分布比较平坦;堆芯增殖比为1.019,可延长堆芯的寿期。内冷式气冷快堆从中子特性计算上满足了堆芯物理要求,可为今后气冷快堆的设计提供参考。

A gas cooled fast reactor with the internal cooling type is designed by simulation and main parameters of the reactor core are calculated theoretically in the present paper. Physical analyses show that selecting proper fuel enrichment can make the core be at a critical state ; the reactor neutron spectrum matches the requirements of the fast reactors; the neutron flux and core power distribution are relatively flat and the core breeder ratios 1. 019, which could prolong the lifetime of the reactor core, The internal gas cooled fast reactor meets physical requirements of the reactor in neutron characteristics and provides references for the design of the gas cooled reactor in the future.