压水堆核电站运行状态下气液态放射性流出物源项计算研究

Research on Calculation of Gaseous and Liquid Radioactive Release During Normal Operation for Pressurized Water Reactor Plant

压水堆核电站运行状态下气液态放射性流出物源项为环境影响评价的源头。通过对压水堆核电站运行状态下气液态放射性流出物的释放途径及其计算基准的研究,得出了各类型压水堆核电站通用的运行状态下气液态放射性流出物源项计算模型,并分析讨论了主要的影响因素。根据建立的计算模型,采用CPR1000机型的设计参数,计算了CPR1000机型气液态放射性流出物源项预期值,并与大亚湾和岭澳核电站实测值进行了比较。比较结果表明,模型计算结果可包络实测值,计算模型具有一定的保守性。

The gaseous and liquid radioactive release during normal operation is the source of environmental impact assessment for pressurized water reactor（PWR） plant.The general calculation model of gaseous and liquid radioactive release for PWR plant was established according to the research on the release pathways and calculation basis,and the main influencing factors were analyzed.Basing on the established calculation model and the design data of CPR1000,the expected value of gaseous and liquid radioactive release for CPR1000 was calculated and compared with the experimental data of Daya Bay and Ling＇ao Nuclear Power Stations.The comparison results show that the calculated value is larger than the experimental data and the established calculation model is conservative.