秦山核电厂燃耗深度对DNBR限值的影响分析  

Analysis of Burnup Effect on DNBR Limit for Qinshan Nuclear Power Plant

作　　者：沈六华[1] 王丽华[1] 

机构地区：[1]上海核工程研究设计院,200233

出　　处：《核电工程与技术》2005年第3期5-10,共6页Nuclear Power Engineering and Technology

摘　　要：本文研究了在秦山核电厂批平均卸料燃耗深度超过原定限值的情况下，为保证电厂的安全运行对DNBR限值进行重新确认的问题。研究过程中，综合考虑了由燃耗加深所引起的核焓升因子的变化和棒弯曲这两种效应对DNBR限值的影响。结果表明，对秦山核电厂而言，在批平均卸料燃耗超过原定限值的情况下，维持原DNBR限值不变仍是安全可行的。During the exceeded the original limit operation of Qinshan NPP, the batch averaged discharge burnup The reconfirmation of DNBR limit with increased burnup, which is necessary to the safe operation of nuclear power plant, is discussed in this paper. The effects of F△H^N （nuclear enthalpy rise factor） burndown and fuel rod bowing on DNBR limit are considered in the analysis. The analysis shows that it is still safe and suitable for Qinshan NPP to keep the DNBR limit unchanged in deep burnup.

关 键 词：秦山核电厂 燃耗深度 DNBR限值 核焓升因子 棒弯曲 DNBR 限值 安全运行 卸料 平均 

分 类 号：TM623.8[电气工程—电力系统及自动化] TL351.6[核科学技术—核技术及应用]