大亚湾核电厂2KRT007MA故障原因分析及其改进

The Analysis and Improvement for the Problem of 2KRT007MA in Daya Bay Nuclear Power Plant

大亚湾核电厂辐射监视系统(KRT系统)的KRT007MA监测从冷凝器抽出的非冷凝抽取物的β活性,以探测蒸汽发生器的泄漏。由于冷凝器系统的原因,导致KRT007MA采样气体中含有水滴,造成KRT007MA通道频繁发生故障。通过调查分析,确定了故障的根本原因,并采取了针对性的改进措施,彻底解决了问题。

In Daya Bay nuclear Power plant, KRT007MA provide continuous monitoring of β activity level for condenser system to detect the leakage of generator. Due to the unnormal working status of condenser, the sampiing gas of KRT007MA contains water drips, which makes the channel alarm frequently. By the investigation and analysis, the root cause was found and improvement was adopt, which solved the problem.