辅助给水泵的运行方式及其安全性论证

Auxiliary feed pump operation mode and its safety demonstration

辅助给水系统(ASG)属于核电厂专设安全设施之一。辅助给水泵作为该系统的重要设备,对系统安全功能实现起着极其重要的作用。在任一正常给水系统(由于CVI、CEX、ABP、ARE或APA失效)失效时,辅助给水泵启动导出堆芯余热,直至RRA投入,堆芯余热通过GCT导出。此外辅助给水系统作为失去主给水供应时向蒸汽发生器二回路侧供应给水的后备系统。本文主要介绍了辅助给水泵的设备情况,及在不同的运行工况下如何实现其安全功能。

Auxiliary feedwater system(ASG)is one of the special safety facilities for nuclear power plants.As an important equipment of the system,auxiliary feed water pump plays an extremely important role in realizing the safety function of the system.In case of failure of any normal water supply system(due to failure of CVI,CEX,ABP,ARE or APA),the auxiliary feed water pump is started to export core waste heat until RRA is put into operation,and core waste heat is exported through GCT.In addition,the auxiliary feedwater system serves as a backup system for supplying water to the secondary circuit side of the steam generator when the main water supply is lost.This paper mainly introduces the equipment of auxiliary feed water pump and how to realize its safety function under different operating conditions.