摘要
对于具有中间冷却系统的核电厂,当发生热交换器破损导致冷却剂泄漏时,需要及时判明放射性升高原因,采取有效措施控制和消除故障。文章通过回顾大亚湾核电站D2REN002RF热交换器泄漏和D1REN004RF传热管泄漏两次设备冷却水核岛热交换器泄漏的处理过程,分析具体故障原因和相应故障现象,并依据设备冷却水系统放射性的监测及行动要求,可归纳总结出设备冷却水系统放射性异常时的通用响应措施,并在故障原因确认和机组状态控制以及各阶段行动方面给出具体建议步骤,在其他具有中间冷却系统的核电站再次发生此类事件时可据此快速查找及隔离故障热交换器,以控制故障发展,减小热交换器泄漏事件后果。
When coolant comes out because of heat exchanger leakage in a nuclear power plant which has intermediate cooling system, the reason of radioactive increase should be identified in time and effective measures should be taken so as to control and fix the defect. After reviewing the whole treatment processes of the two events of nuclear island heat exchanger leakage in the component cooling water system in Daya Bay nuclear power plant, by analyzing reasons and corresponding phenomena, a set of general responding measures can be concluded when radioactivity increases abnormally in the component cooling water system, according to the requirement of monitoring and controlling of radioactivity in the component cooling water system. And detail suggestion of steps on defect reason identification, unit status controlling and treatment actions is provided. These can be used in the event treatment of abnormal radioactive increase in the intermediate cooling system in other nuclear power plants, in order to quickly identify and isolate the leaking heat exchangers, control the expanding of defect and minimize the consequence.
出处
《中国核电》
2014年第1期59-65,共7页
China Nuclear Power
关键词
设备冷却水
热交换器
泄漏
放射性
component cooling water
heat exchanger, leakage
radioactive
