核电厂严重事故后安全壳压力的测量方法

在核电厂设计早期，安全壳大气监测系统仅考虑了设计基准事故。而与设计基准事故相比，在严重事故工况下的安全壳内压力会有较大增长，现有的安全壳压力测量仪表不能满足严重事故工况下对安全壳压力的监测。为采取有效的事故缓解对策，需考虑严重事故下的安全壳压力监视措施。目前的技术条件下，在安全壳外增设一个安全壳压力测量通道用于严重事故后的安全壳压力测量是一可考虑的方案。大亚湾核电厂实施了这种改进。通过此改进，可推迟严重事故时安全壳的排放时间，提高核电厂的安全水平。经论证，这种方案是安全和可行的。

Containment Pressure Monitoring Method After Severe Accident in Nuclear Power Plant

The containment atmosphere monitoring system in nuclear power plant was designed on the basis of design base accident.But containment pressure will increase greatly in a severe accident,and pressure instrument in the containment can't satisfy the monitoring requirement.A new method to monitor the pressure change in the containment after a severe accident was considered,through which accident soften methods can be adopted.Under present technical condition,adding a pressure monitoring channel out of containme...