封闭母线压力低原因分析及处理

Analysis and Treatment of the Low Pressure of Closed Busbar

某核电厂日常运行期间,封闭母线压力运行监测值长期处于偏低区间,不满足维修手册的标准要求,且存在封闭母线压力低报警。通过分析验证,确认为微正压装置补气管线回路节流所致,并提出相应的改进方案,方案实施后效果良好。

During the daily operation of a nuclear power plant,themonitoring value of closed busbar pressure operation is always in the low range,which can notmeet the standard requirements of themaintenancemanual,and there is lowalarmof closed busbar pressure.Through the analysis and verification,it is confirmed that it is caused bythe throttle of the fillinggaspipeline circuit of themicro-positive pressure device,and the corresponding improvement scheme isput forward,the effect of the scheme isgoodafter the actual application.