摘要
在中核核电运行管理有限公司秦山第三核电厂(简称秦山三核)调节棒组件变更设计的物理分析中,用于堆芯计算程序RFSP-IST的钴调节棒增量截面由DRAGON产生,它的方法模型与秦山三核安全分析报告RFSAR(2007版)所采用的超栅元计算程序MULTICELL不完全相同,因此有必要对调节棒组件变更前后RFSP-IST程序通量计算不确定性进行分析。基于秦山三核1、2号机组的相关历史运行数据,采用95/95单边上限不确定性分析方法,对调节棒组件变更前后RFSP-IST程序通量计算不确定性进行分析。数值计算结果表明,调节棒组件变更设计及超栅元增量截面计算程序变更未对RFSPIST程序通量计算不确定性产生影响。
In physical analysis of the cobalt adjuster rods design change for Qinshan Phase Ⅲ ,the incremental cross section used in RFSP-IST code for the cobalt adjuster rod was calculated by DRAGON ,whose methodology was not exactly the same as the MULTICELL used for Qinshan Phase Ⅲ RFSAR （2007） ,hence it was necessary to do the uncertainty analysis for RFSP-IST code flux calculation after cobalt adjuster rod replacement .Based on the historical data from Unit 1 and Unit 2 of Qinshan Phase Ⅲ , the uncertainty analysis of RFSP-IST code flux calculation was done with 95/95 upper tolerance limit method . Numerical results show that the cobalt adjuster rod design change and different incremental cross section calculation codes do not impact the uncertainty of RFSP-IST code flux calculation .
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2014年第6期1077-1081,共5页
Atomic Energy Science and Technology
