压水堆核电厂放射性源项的估算方法研究

Research on Calculations of Radioactive Source Terms for PWR Nuclear Power Plants

给出了通过安全壳大气取样分析结果估算核事故情况下压水堆核电厂向环境释放的放射性源项的方法,对相关因素进行了讨论,并与核事故辐射后果评价软件RASCAL4.2的评价结果进行了比对,验证了方法的有效性。发现了软件RASCAL4.2的不足,并提出了相应的改进建议。

In this paper, the method to calculate the radioactive source terms released to the environment is provided based on the analysis results of samples in the containment atmosphere during an accident at a PWR Nuclear Power Plant, relevant factors are discussed, and the validity is verified through the comparison of results calculated by this method and the code RASCAL4.2, which is a radiological assessment system for consequence analysis. Meanwhile, some deficiencies of the code RASCAL4.2 are founded during the verification, and improvement suggestions are provided for the code.