HFETR供电系统概率安全评价  

PSA for the Power Supply System of HFETR

作　　者：周春林[1] 张江云[1] 郑大吉 王文龙[1] 邹德光 李子彦[1] 陈启兵[1] 

机构地区：[1]中国核动力研究设计院一所,四川成都610005

出　　处：《核科学与工程》2016年第1期27-34,共8页Nuclear Science and Engineering

摘　　要：反应堆供电系统失效可导致堆芯熔毁等严重事故后果。本工作应用RiskSpectrum软件,对高通量工程试验堆(简称HFETR)供电系统开展概率安全评价(PSA)工作。通过整合部分法考虑共因故障,建立了以全场断电(SBO)为顶事件的系统故障树模型,并定量给出HFETR发生SBO概率为7.49×10^(-8),证明HFETR现役供电系统安全可靠。同时,以供电系统模型及运行可靠性数据为基础,进行了割集、重要度、敏感度等分析,较全面地分析了现役供电系统的风险水平,为HFETR供电系统变更、升级和改造提供了重要参考。The failure of reactor power supply system could cause severe consequence like core damage. Employing the RiskSpectrum software, HFETR power supply system is analyzed by using probability safety assessment （PSA） methodology. Considering the common cause failures （CCF） by employing unified partial method （UPM）, the power supply system PSA model is built via constructing the fault trees with the SBO as the top event. Meanwhile, the consequentially quantity failure probability is presented as 7.49×10^-8 , which proves that the power supply system is safe and reliable. By input the reliability data from the HFETR operation, and the unavailability of power supply system is presented. Furthermore, the analysis also involves in the minimal cut set （MCS） analysis, importance measures and sensitivity calculations. Those analyses present an overview of the current power supply system risk level, and provide a considerable reference for the system change and update issues.

关 键 词：高通量工程试验堆 概率安全评价 供电系统 全场断电 

分 类 号：TL364[核科学技术—核技术及应用]