方家山核电站LOCA监测系统换料后初始设置优化

The Optimized Initial Set of LOCA Surveillance System after Refueling in Fangjiashan Nuclear Power Plant

方家山核电站LOCA监测系统是一个利用堆外功率量程通道的实时测量数据重构堆芯功率分布的系统。为了保证LOCA监测系统重构计算的准确性,需要定期更新LOCA监测系统的相关参数,尤其是转置敏感矩阵(TS矩阵)。本文提供了一种参数的修正思路,在换料后重新进行相关参数的设置,以提高LOCA监测系统从0%FP^30%FP的监测精度。

The LOCA surveillance system of the Fangjiashan unit is a system for reconstructing the core power distribution using real-time measurement data of the external power range channel.In order to ensure the accuracy of the LOCA surveillance system to reconstruct the calculation,it is necessary to periodically update relevant parameters of the LOCA surveillance system,especially the transfer-sensitivity matrix(TS matrix).This paper provides a reference to the revised ideas,refurbished after re-set relevant parameters to improve the LOCA surveillance system from 0% FP ~ 30% FP monitoring accuracy.