CAJ | 학술논문

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RFSP-IS T程序通量计算不确定性产生影响。
재중핵핵전운행관리유한공사진산제삼핵전엄（간칭진산삼핵）조절봉조건변경설계적물리분석중，용우퇴심계산정서RFSP-IST적고조절봉증량절면유DRAGON 산생，타적방법모형여진산삼핵안전분석보고RFSAR（2007판）소채용적초책원계산정서MULTICELL불완전상동，인차유필요대조절봉조건변경전후RFSP-IST정서통량계산불학정성진행분석。기우진산삼핵1、2호궤조적상관역사운행수거，채용95/95단변상한불학정성분석방법，대조절봉조건변경전후RFSP-IST 정서통량계산불학정성진행분석。수치계산결과표명，조절봉조건변경설계급초책원증량절면계산정서변경미대RFSP-IS T정서통량계산불학정성산생영향。
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 .