乏燃料事故源项估算方法研究

Study on Spent Fuel Accident Source Term Estimation Method

摘要: 福岛事故之后乏燃料的安全问题受到广泛关注。本文介绍一自主开发的应急辅助决策软件STEM中的乏燃料事故源项估算模块。利用美国核管理委员会（NRC）开发的核电事故后果分析软件RASCAL 4.2与STEM分别对假定事故情景进行计算，结果验证了STEM的正确性。STEM乏燃料事故源项估算模块可为核电厂的乏燃料事故后果评价提供参考。

Abstract: Unprecedented attention is paid to the safety of spent fuel after Fukushima accident. One module of the emergency aided decision code STEM used for spent fuel source term estimation, was introduced in this paper. The validity of the code was substantiated by RASCAL 4.2. Source term estimation module for spent fuel accident in STEM code can provide vital information for consequence assessment of a nuclear power plant accident.