功率工况异常重要性判定方法在核安全监管中的应用  

Application of Significance Determination Process at Power Condition in Nuclear Safety Regulations

作　　者：马国强 李娟 丁珊珊 张延云 刘成运 Ma Guoqiang;Li Juan;Ding Shanshan;Zhang Yanyun;Liu Chengyun(Nuclear and Radiation Safety Center,Ministry of Ecology and Environment,Beijing,100082,China;Eastern Office of the National Nuclear Safety Administration,Shanghai,200233,China)

机构地区：[1]生态环境部核与辐射安全中心,北京100082 [2]生态环境部华东核与辐射安全监督站,上海200233

出　　处：《核动力工程》2020年第3期183-187,共5页Nuclear Power Engineering

摘　　要：介绍了国家核安全局开发的功率工况下核电厂异常重要性判定方法(SDP)的基本原理及方法,并使用该SDP对国内某核电厂发生的汽动辅助给水泵(ASG004PO)不可用事件进行了重要度和敏感性分析,结果表明该汽动辅助给水泵的再循环流量试验周期偏长。本文针对此问题给出了优化建议是将ASG004PO再循环流量试验的周期优化为小于34 d。This paper describes the basic principles and methods of the significance determination process(SDP) at power condition, which was developed by the National Nuclear Safety Administration, and was used to analyze the significance and sensitivity of the failure of the pneumatic auxiliary feed pump(ASG004PO) in nuclear power plants. The result has indicated that the period of the recirculation flow test for the steam-driven auxiliary feed pump was too long, and the optimization proposal for this issue is to optimize the cycle of ASG004PO recirculation flow test to less than 34 days.

关 键 词：核电厂异常重要性判定方法 风险指引型 辅助给水系统 风险重要度 

分 类 号：TL48[核科学技术—核技术及应用]