某核电厂控制室进风间空气γ剂量率监测仪设计优化

Design and optimization ofγdose rate monitor for air in the control room intake room of a certain nuclear power plant

控制室进风间空气γ剂量率监测仪功能为对主控室进风间进行监测,在测量到辐射剂量到达一定阈值,将触发报警。近三年各核电厂接连发生该仪表误报警引起的0级运行事件共5起,通过控制室进风间空气γ剂量率监测仪的安装位置优化、供电分组优化、逻辑修改优化三方面进行仪表优化分析,提升仪表的运行可靠性,避免再次引发0级运行事件的发生。

Control room air intake room air γ the function of the dose rate monitor is to monitor the air intake room of the main control room.When the measured radiation dose reaches a certain threshold,an alarm will be triggered.In the past three years,there have been a total of 5 level 0 operational events caused by the instrument's false alarm in various nuclear power plants.This article does instrument optimization analysis in three aspects of optimization ofγdose rate monitor installation location in control room air intake room,power supply grouping and logic modification to improve the operational reliability of instruments and avoid the occurrence of level 0 operational events again.