HFETR一级PSA始发事件分析

HFETR Initiating Events Analysis in Level 1 PSA

在高通量工程试验堆(HFETR)一级概率安全分析(PSA)中,始发事件分析是首要任务。首先综合应用了工程评价、参考以往的始发事件清单、演绎分析和运行经验总结等方法,确定了HFETR运行阶段一级PSA始发事件清单,然后对始发事件进行适当的归并分组,最后结合故障树分析、HFETR运行事件统计及参照国内外相同类型研究堆等方法,给出了各始发事件组的频率,为后续开展HFETR一级PSA奠定了基础。

In the level one Probabilistic Safety Analysis(PSA) of High Flux Engineering Test Reactor(HFETR), the primary task is the initiating event analysis. In the present paper, the methods such as engineering evaluation, reference to the previous list of initiating events, deductive analysis and operational experience summary are applied comprehensively to determine the list of PSA initiating events in the HFETR operation period. Then, the initiating events are properly grouped. Combined with the methods such as fault tree analysis, HFETR operation event statistics and reference to the same type of research reactor, the frequency of each initiating event group is given, which lays a foundation for the subsequent level 1 PSA of HFETR.