650MW压水堆中破口失水事故事件序列分析  

Event Tree Analysis for the Medium LOCA Accident of 650 MW PWR

作　　者：于渭清 葛炼伟 YU Weiqing;GE Lianwei(China Nuclear Power Operation Management Co.,Ltd.,CNNP,Haiyan,Zhejiang Prov.314300,China)

机构地区：[1]中核核电运行管理有限公司,浙江海盐314300

出　　处：《中国核电》2024年第1期86-90,共5页China Nuclear Power

摘　　要：本文结合650 MW两环路压水堆核电厂发生中破口失水事故的特点、系统参数变化、事故进程以及运行人员的干预对事故发展的影响,运用PSA事件树分析方法对650 MW压水堆核电厂中破口失水事故事件序列进行分析和评价。通过建立事件树模型,计算650 MW压水堆核电厂发生一回路中破口失水事故后堆芯损伤的概率,为评价电厂的安全运行提供指导性建议。This thesis analyzed and evaluated the medium LOCA accident of 650 MW PWR with the PSA event tree method to get the consequences and accident sequences.The influence of the characteristics of the medium LOCA,the variation of plant parameters,and the reaction of plant staff on the event development were considered.Through the establishment of the event tree model,the probability of core damage after the LOCA in the primary circuit of 650MWe PWR nuclear power plant is calculated,which provides instructive suggestions for evaluating the safe operation of the power plant.

关 键 词：中破口失水事故 概率安全评价 堆芯损伤 事件树分析 

分 类 号：TM623[电气工程—电力系统及自动化]