二代改进型核电厂严重事故后安全壳压力控制研究

Research on the Control of Containment Pressure of M310+ Under Severe Accident Condition

摘要: 安全壳做为核电厂的最后一道安全屏障，事故后起着包容放射性产物，保护公众和环境免受辐射危害的重要作用。采用一体化严重事故分析程序建立了二代改进型核电厂田湾5 & 6号机组的模型，考虑了不同的安全壳压力控制系统，对典型事故序列下安全壳内压力变化进行了分析，给出了严重事故后的安全壳压力控制手段。研究结果对二代改进型核电厂严重事故缓解提供了参考。

Abstract: As the last safety barrier, containment plays an important role of containing fission products and protecting public and environment from the harm of radiation under accidents. In this paper, the model of M310+ in Tianwan NPP Unit 5 & 6 is set up by modular severe accident analysis code, systems for controlling of containment pressure are considered, and the variation of containment pressure under typical accident sequences is analyzed, finally the methods on control of containment pressure under severe accident are gained. The results can be used for the mitigation of severe accident happening in M310+ .