华龙一号重要厂用水系统允许后撤时间优化研究  

Study on Optimization of Allowable Outage Time for Essential Service Water System in HPR1000

作　　者：陈国才 杨赟 童节娟[2] Chen Guocai;Yang Yun;Tong Jiejuan(CNNC Guodian Zhangzhou Energy Co.,Ltd.,Zhangzhou,Fujian,363300,China;Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing,100084,China)

机构地区：[1]中核国电漳州能源有限公司,福建漳州363300 [2]清华大学核能与新能源技术研究院,北京100084

出　　处：《核动力工程》2023年第4期214-219,共6页Nuclear Power Engineering

基　　金：国家重点研发计划项目(2019YFB1900800)。

摘　　要：采用确定论和概率论相结合的风险指引型综合决策方法对华龙一号(HPR1000)机组重要厂用水系统(WES)运行技术规格书条款允许后撤时间(AOT)进行优化分析论证,包括预期变更的确定、纵深防御分析、安全裕量分析、概率安全分析(PSA)。分析结果表明,HPR1000机组WES系统一列不可用AOT由72 h延长至96 h是可接受的,符合HPR1000机组纵深防御原则和安全裕度要求,其风险增量满足美国核管会(NRC)管理导则RG1.174和RG1.177的风险可接受准则。在风险可控的前提下,可以进一步提高电厂运行的灵活性。The risk-informed integrated decision-making method combining deterministic and probability theories was adopted for the optimization analysis and demonstration of the allowed outage time(AOT)in the terms of operational technical specifications for the essential service water system(WES)of Hualong One(HPR1000),including the determination of proposed changes,defense-in-depth analysis,safety margin analysis and probabilistic safety assessment(PSA).The results show that it is acceptable to extend the AOT from 72 h to 96 h for the unavailable train of the WES of HPR1000;the principle of defense-in-depth and safety margin requirements of HPR1000 are met;the increased risk meets the acceptance guidelines of the U.S.Nuclear Regulatory Commission(NRC)regulatory guidelines RG1.174 and RG1.177.On the premise of risk control,the flexibility of power plant operation can be further improved.

关 键 词：风险指引 华龙一号(HPR1000) 重要厂用水系统(WES) 运行技术规格书 允许后撤时间(AOT) 

分 类 号：TL48[核科学技术—核技术及应用]