The deep pool type reactor system is simple and has high inherent safety,which can used for residential heating and realize energy conservation and emission reduction.In order to improve the economy and close to the residential areas,it is necessary to quantitatively evaluate the safety risks through PSA(probabilistic safety assessment).Due to the unique safety characteristics of deep pool type reactor,the accident process improves slowly,and the opportunity for human intervention is sufficient.Therefore,targeted consideration should be taken when performing PSA.In this paper,the level 1 probabilistic safety assessment of internal events is carried out for a typical deep pool type reactor,and the analysis assumptions,final state division,result analysis and other aspects are adjusted adaptively in the assessment process.According to the analysis and evaluation,the total core damage frequency is 2.13E-09/reactor year,showing the excellent safety characteristics of pool type low temperature heating reactor.Based on the quantitative results,the MCS(minimal cut set)analysis and the impact of human intervention time on CDF(core damage frequency)are also carried out,and the risk opinions and suggestions are given according to the analysis results.
关键词
池式低温供热堆/概率安全分析/事件序列/风险评价
Key words
deep pool type reactor/PSA/event sequences/risk analysis
维普
万方数据