摘要
为提高核电厂维修的有效性和风险管理水平,国家核安全局2017年发布了《改进核电厂维修有效性的技术政策(试行)》,要求试点核电厂逐步开展相关的维修活动优化研究。技术政策中提出性能指标的目的是对纳入维修规则范围的构筑物、系统和设备分别制定合适的可测量参数以对其性能趋势进行客观的判断。本文对现阶段适用于核电厂的“确定风险重要类”和“制定性能指标”方法进行研究,提出确定风险重要类的判断方法和示例,分析了不同风险重要度组合对维修策略的影响,介绍了采用二项式分布和泊松分布确定性能指标的方法和示例,为国内维修规则试点工程提供相应技术参考。
In order to improve the maintenance effectiveness and risk management level of nuclear power plants,the National Nuclear Safety Administration issued the Technical Policy for Improving the Maintenance Effectiveness of Nuclear Power Plants(Trial Implementation)in 2017,requiring pilot nuclear power plants to gradually carry out relevant maintenance activities optimization research.The purpose of performancecriteria proposed in technical policy is to develop appropriate measurable parameters for structures,systems and components that are included in maintenance rule to objectively monitor their performance trends.This paper studies the methods of“identifying risk significant categories”and“formulating performance criteria”for nuclear power plants at present.This paper gives the judgment methods and examples to determine the risk significant categories,analyses the influence of different risk importance combinations on maintenance strategies,and introduces the methods and examples of using binomial distribution and Poisson distribution to determine performance criteria.It will provide some technical reference for the pilot plants of domestic maintenance rule.
作者
张博平
初永越
钱晓明
李秋奇
王闯
ZHANG Boping;CHU Yongyue;QIAN Xiaoming;LI Qiuqi;WANG Chuang(Nuclear and Radiation Safety Center,MEE,Beijing 100082,China)
出处
《核科学与工程》
CAS
CSCD
北大核心
2019年第6期1053-1060,共8页
Nuclear Science and Engineering
