Application of PSA Technology in Technical Requirements Optimization of Nuclear Power Plant

Probabilistic safety analysis (PSA) technology has become the mainstream analysis method in the world to support the daily risk management and safety decision-making in nuclear power plants. A series of regulatory guidelines issued by the US Nuclear Regulatory Commission are used to guide the application for change of technical specifications, effectively improving the reliability of equipment. As for the unavailability of REA boration or RCV charging line, a nuclear power plant in China has optimized the transfer process of corresponding event procedures. In this paper, the risk-informed analysis technology is applied to analyze and determine whether the technical requirements related to the events could be optimized.