某机组停堆棒意外掉落事件分析及处理研究  

Analysis and Treatment of Accidental Drop of Shutdown Rod of a Unit

作　　者：王超 杨文清 黄正东 李晓飞 袁盛馨 柳继坤 刘东亮 汪宇 程雄伟 肖京 WANG Chao;YANG Wenqing;HUANG Zhengdong;LI Xiaofei;YUAN Shengxin;LIU Jikun;LIU Dongliang;WANG Yu;CHENG Xiongwei;XIAO Jing(State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment,China Nuclear Power Engineering Co.,Ltd.,Shenzhen 518172,China)

机构地区：[1]中广核工程有限公司核电安全监控技术与装备国家重点实验室,广东深圳518172

出　　处：《自动化仪表》2021年第S01期247-252,共6页Process Automation Instrumentation

摘　　要：为分析某机组棒控棒位系统(RGL)停堆棒束K16意外掉落事件原因,研究了提高RGL运行稳定性和可靠性的方法。根据控制棒动作原理,通过对动棒时序进行分析,采用逐步排除的方式调查事件原因。从机组安全、共因故障、落棒功能及模拟机验证等角度进行分析。根据分析结果,提出解决方案和建议措施。建议和措施在该机组的实施,有效地保障了RGL正常运行,降低了意外落棒的风险。同时,该处理方式也为其他核电机组解决同类问题提供了参考。In order to analyze the cause of the accident drop of K16 shutdown rod bundle of the rod position indicating and rod control system(RGL)in a unit,the method of improving the stability and reliability of the RGL operation is studied.According to the operation principle of the control rod,the timing sequence of the moving rod is analyzed,and the reason of the incident is investigated by the way of step-by-step elimination.From the safety of the unit,common cause failure,rod drop function and simulator verification,the analysis is made.According to the analysis results,solutions and suggested measures are put forward.The implementation of the suggestions and measures in the unit effectively ensures the normal operation of the RGL and reduces the risk of accidental rod drop.At the same time,this treatment method also provides a reference for other nuclear power units to solve similar problems.

关 键 词：RGL 控制棒 意外落棒 动棒时序 停堆棒 机组安全 落棒功能 模拟机验证 

分 类 号：TH-364[机械工程]