【摘要】 对FDS团队研发的国产PSA软件RiskA进行了大量系统性的测试,采用完整的核电站真实系统模型,分别用RiskA和国际同类流行软件如Risk Spectrum进行了故障树的定性及定量分析,测试结果表明RiskA与国际同类软件相比,结果正确、模型可靠、算法精确。而Risk Spectrum在测试过程中暴露出了一些问题,如分析中采用阶数截断时单个最小割集的定量计算不正确等,对该问题进行了理论证明及初步的原因分析。更多还原

【Abstract】 RiskA is a home-developed probabilistic safety assessment software by FDS team.Large numbers of real fault tree models of nuclear power plants are calculated by RiskA and Risk Spectrum.Comparative analysis shows that the fault tree qualitative and quantitative analysis of RiskA is accurate and efficient.On the contrary,Risk Spectrum may be ill-considered and faulty in some cases though it is used by 40% of the world nuclear power plants,as the probability of each MCS is inconsistent with theoretical value which is calculated based on the technology of rank truncation.更多还原