小型动力堆弹棒事故环境释放源项分析

Analysis of the Source Term Released to the Environment in Case of a Rod Ejection Accident in a Small Nuclear Power Reactor

弹棒事故作为压水堆设计基准事故,包括两种放射性向环境释放的途径:安全壳泄漏及汽轮机、安全阀释放。本文以小型动力堆为研究对象,参考APl000的最新事故源项分析思路,并与M310型核电厂的分析思路进行对比,得出小型动力堆弹棒事故的环境释放源项分析方法,计算了弹棒事故造成的环境释放源项。

As a design basis accident （DBA）, a rod ejection accident leads to the release of activity to the environment through containment leakage, and the release of activity contained in the secondary side is also considered. This paper aims at analyzing the source term released to the environment in case of a rod ejection accident in a small power reactor with the methods of the AP1000. The methods were compared with those of a M310 nuclear power plant. The analysis method and the result of the source term released to the environment for a rod ejection accident are given in this paper.