百万千瓦环形燃料堆芯方案初步设计

Preliminary Scheme Design of 1000 MWe Annular Fuel Reactor

应用CASMO5/SIMULATE5程序包对环形燃料组件元件栅距、235U富集度和可燃毒物进行了研究。在此基础上进行了百万千瓦环形燃料堆芯方案初步设计。分别给出了72盒和81盒换料新组件平衡循环的堆芯设计方案,计算了堆芯主要物理参数。结果表明,81盒换料新组件方案循环长度、卸料燃耗、焓升因子、热点因子、慢化剂温度系数、停堆裕量均满足设计目标和准则。

The cell pitch, 235U enrichment and burnable poison of annular fuel assembly were studied using CASMO5/SIMULATE5. The 1000 MWe reactor core pattern with annular fuel assembly was preliminary designed. Two types of fuel management strategies of the equilibrium cycle with 72 and 81 fresh assemblies were proposed, and the main physical parameters of the reactor were calculated. The results show that these parameters of 81 fresh assembly case including the cycle length, assembly discharge burnup, nuclear enthalpy rise factor, hot spot factor, moderator temperature coefficient, and shutdown margin meet the design criteria.