基于主逻辑图的安全风险建模研究

概率风险评估已成为研究复杂系统安全风险较为成熟的方法 ,其风险模型的建立是基于故障树/事件树的 ,风险分析具有众多的静态特性。然而 ,大的复杂系统往往存在诸多动态因素 ,在风险研究需要考虑这些动态因素的情况下 ,基于传统故障树 /事件树的模型则难以提供支持。笔者对此进行了分析 ,提出了基于主逻辑图的安全风险建模 ;主要介绍了主逻辑图的概念及其建模方法 ,并对模型进行了分析 ;在此基础上 ,基于主逻辑图分析事故场景 ,对场景风险的量化评估进行了简要介绍 ,并结合某核反应堆例子进行了分析。

Study on Risk Modeling Based on Master Logic Diagram

Probabilistic risk assessment has become a well considered approach to study the risk of complex system, its modeling is based on the fault tree or event tree. The risk analysis has some static characteristics. However, a large complex system sometimes involves dynamic factors, it is hard to support the study when considering those dynamic factors. The authors analyze it, and present a modeling based on master logic diagram. The concept of the master logic diagram and the modeling method are introduced and the model analyzed. Quantitative assessment of the risk relating to location based on master logic diagram is briefly introduced, which is exemplified and analyzed with a case of nuclear reactor.