风险指引型高温气冷堆SSC安全分级研究  

Study on Risk-informed SSC Safety Classification of High Temperature Gas-cooled Reactor

作　　者：倪曼 赵军[2] 钱鸿涛 张佳佳 宫宇 肖军 Ni Man;Zhao Jun;Qian Hongtao;Zhang Jiajia;Gong Yu;Xiao Jun(Nuclear and Radiation Safety Center,MEE,Beijing,100082,China;Tsinghua University,Beijing,100084,China)

机构地区：[1]生态环境部核与辐射安全中心,北京100082 [2]清华大学,北京100084

出　　处：《核动力工程》2024年第3期193-198,共6页Nuclear Power Engineering

基　　金：中核集团集中研发项目(20212009001)。

摘　　要：风险指引安全分级是以概率安全分析(PSA)为基础,对传统的确定论安全分级进行优化,从而改善核电厂安全分级的管理要求,以进一步提升核电厂的安全性和经济性。本文在风险指引安全分级的基础上,提出了高温气冷堆的安全分级流程,并以蒸汽发生器(SG)事故排放系统为例进行了风险指引安全分级的实例研究。结果表明,安全级的SG电磁排放阀可划分为安全相关但低风险重要等级,说明该系统的安全分级还有优化的空间,可为后续核电厂的构筑物、系统和部件(SSC)安全分级工作提供参考。Risk-informed safety classification is based on probabilistic safety analysis(PSA),which optimizes the traditional deterministic safety classification,thus improving the management requirements of safety classification of nuclear power plants and further enhancing the safety and economy of nuclear power plants.Based on the concept of risk-informed,this paper puts forward the safety classification process of high temperature gas-cooled reactor,and takes the accident discharge system of steam generator(SG)as an example to carry out the risk-informed safety classification study.The results show that the safety SG electromagnetic discharge valve can be classified as safety-related but with low-risk,which means that there is still room for optimization of the safety classification of the system,and can provide reference for the safety classification of structures,systems and components(SSC)in nuclear power plants in the future.

关 键 词：风险指引 高温气冷堆 概率安全分析(PSA) 构筑物、系统和部件(SSC) 

分 类 号：TM623[电气工程—电力系统及自动化] TL364[核科学技术—核技术及应用]