秦山核电厂320MW级核电机组应急补水设置及安全性分析

Water Supply Facility under Emergency Condition and Safety Analysis of Qinshan Nuclear Power Plant Unit 1

介绍秦山320 MW级核电机组针对福岛核事故原因的一项安全改进。在核电厂严重事故工况下,采用移动泵对一、二回路应急补水导出堆芯余热,增设补水通道、接口、水源及移动泵。分析新增设施对原有系统正常运行安全性的影响;探讨应急补水可能产生的安全隐患,并提出改进或应对措施。

One safety improvement considering Fukushima accident is proposed for Qinshan Nuclear Power Plant unit-1. Under the sever accident condition, the reactor residual heat of the reactor core is removed by supplying the emergency water to the primary and secondary loop with the mobile pump, and add water supply channel, interface, water resource and mobile pump. The effect of added facilities on the safety of normal operation is analyzed. The potential safety problem resulted from the emergency water supply is discussed, and the improvement or mitigation measures is proposed.