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田湾核电站辐射监测系统中实时监测气态流出物放射性活度是重要的监测功能之一;监测反应堆厂房排风系统放射性的气体取样介质到达低温区域产生凝结水,造成气态流出物放射性活度监测功能失效;本文描述了气体放射性取样管线内冷凝水去除的新方法,并通过实施验证了其有效性。该方法已在田湾核电站其它系统防冻领域得到应用推广,已作为田湾核电站扩建工程辐射监测系统设计参考。
The real-time monitoring of the radioactivity of gaseous effluents in the radiation monitoring system of Tianwan Nuclear Power Station is one of the important monitoring functions. The monitoring of radioactive gas sampling media in the exhaust system of the reactor plant reaches the low temperature region to produce condensed water, resulting in the monitoring of radioactive activity of gaseous effluents In this paper, a new method for removing condensate from gas sampling pipeline was described and its effectiveness was verified through the implementation. The method has been applied in other fields of Tianwan nuclear power plant antifreeze, which has been used as a reference for the radiation monitoring system design of the expansion project of Tianwan Nuclear Power Station.