The Nature Event's Probabilistic Risk Assessment of Nuclear Power Plants with Improvements

Abstract

Probabilistic risk assessment is the systematic and comprehensive methodology to evaluate the risk of nuclear power plants. Currently some aspects, which are the hazard analysis and fragility evaluation in the probabilistic risk assessment of the nature event in nuclear power plants need to be improved. This paper introduces the principle of risk assessment of the nature disaster, and studies the relations between the two risk analysis methods, finally discusses the application of the technologies, which are the hazard factor, vulnerability analysis, loss risk and risk zone map in the nature disaster’s risk assessment, in the nature event PRA of nuclear power plants.