ASG汽动泵超速试验触发电气超速保护跳闸原因分析
Analysis and Treatment of Electrical Overspeed Protection Tripping Caused by Overspeed Test of Auxiliary Water Supply Steam Pump
高国丰 1马烨一 1乔志刚 1任锋 1陈俊开1
作者信息
- 1. 阳江核电有限公司,广东阳江 529941
- 折叠
摘要
某核电厂6号机组处于蒸汽发生器冷却器正常停堆模式,运行人员按计划执行汽动辅助给水泵6 ASG003 PO的功能试验(辅助给水汽动泵以下简称"汽动泵"),主控启动汽动泵后触发电气超速保护跳闸报警信号,核实泵转速最高上涨至9 334 r/min(超过电气超速保护设定值为9 330 r/min),汽动泵跳闸,重复执行该试验验证故障依然存在.文章通过故障树分析法开展原因分析,并制订纠正措施以解决汽动泵跳泵异常.
Abstract
Unit 6 of a certain nuclear power plant is in the normal shutdown mode of the steam generator cooler.The operators carried out the functional test of the steam driven auxiliary feedwater pump 6 ASG003 PO(hereinafter referred to as the steam driven auxiliary feedwater pump)according to the plan.After the main control started the steam driven pump,the generator gas overspeed protection trip alarm signal was triggered.It was verified that the maximum pump speed increased to 9 334 r/min(exceeding the electrical overspeed protection set value of 9 330 r/min),and the steam driven pump tripped,Repeat the experiment to verify that the fault still exists.This article conducts cause analysis through fault tree analysis method and formulates corrective measures to solve the abnormal pump tripping of the steam driven pump.
关键词
电气超速/跳闸/调速机构Key words
electrical overspeed/trip/speed control mechanism引用本文复制引用
出版年
2024
NETL
NSTL
万方数据