核电厂堆芯中子通量测量系统典型失效分析
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摘要
针对核电厂日常运行过程中存在的堆芯中子通量测量系统故障频发问题,研究堆芯中子通量测量系统典型失效事件,包括指套管磨损深度超标、闪发密封组件泄漏报警及中子通量测量探头卡涩问题。通过对典型失效数据和异常事件的收集,分析三类异常事件的发生原因。总结处理类似异常事件的原则和经验,提出了有针对性防范措施和相应的防护对策,避免类似事件的重复发生。
Frequent failures of the core neutron flux measurement system were existed in the daily operation of the nuclear power plant.The typical failure events of the core neutron flux measurement system were studied in this paper,including the wear depth of core flux thimble exceeding the standard,the leakage alarm of seal assembly flashed,and the jam fault in the neutron flux measurement probe.Through the collection of typical failure data and abnormal events,the reasons for the 3 types of abnormal events were analyzed.Finally,the principle and experience of dealing with similar abnormal events were summarized,and some preventive measures and corresponding protective measures were put forward to avoid the similar events.
Frequent failures of the core neutron flux measurement system were existed in the daily operation of the nuclear power plant.The typical failure events of the core neutron flux measurement system were studied in this paper,including the wear depth of core flux thimble exceeding the standard,the leakage alarm of seal assembly flashed,and the jam fault in the neutron flux measurement probe.Through the collection of typical failure data and abnormal events,the reasons for the 3 types of abnormal events were analyzed.Finally,the principle and experience of dealing with similar abnormal events were summarized,and some preventive measures and corresponding protective measures were put forward to avoid the similar events.
引文
[1]胡建荣,罗婷,简捷.防城港核电站堆内中子通量测量系统指套管碰磨分析[J].核科学与工程,2017,37(5):750-755.
[2]柳正钧.堆芯指套管磨损、堵塞机理与预防性维修策略[J].核动力工程,2004,25(2):264-266.
[3]郑超雄,方松利.大亚湾核电站堆芯中子通量测量指形套管在役检查实施与管理[C]//中国核学会.全国第三届核反应堆用核仪器学术会议论文集,北京:中国核学会,2003:63-65.
[4]袁超,黄跃峰,李勇平.宽量程中子通量密度测量数字化处理系统设计[J].核电子学与探测技术,2015,35(1):36-40.
[5]唐兴江,姜磊,潘瑞堂.900 MW压水堆核电厂RIC中子测量系统密封段泄漏报警原因分析[J].中小企业管理与科技,2017:173-174.
[2]柳正钧.堆芯指套管磨损、堵塞机理与预防性维修策略[J].核动力工程,2004,25(2):264-266.
[3]郑超雄,方松利.大亚湾核电站堆芯中子通量测量指形套管在役检查实施与管理[C]//中国核学会.全国第三届核反应堆用核仪器学术会议论文集,北京:中国核学会,2003:63-65.
[4]袁超,黄跃峰,李勇平.宽量程中子通量密度测量数字化处理系统设计[J].核电子学与探测技术,2015,35(1):36-40.
[5]唐兴江,姜磊,潘瑞堂.900 MW压水堆核电厂RIC中子测量系统密封段泄漏报警原因分析[J].中小企业管理与科技,2017:173-174.