Host: The Japan Society of Mechanical Engineers
Name : The 30th International Conference on Nuclear Engineering (ICONE30)
Date : May 21, 2023 - May 26, 2023
Risk-Informed management is an effective approach to improve safety and economy of Nuclear Power Plants(NPPs). Living PSA method and Risk Monitor are basic methodology and tool to implement risk management in NPPs. There are some deficiencies for Risk Monitors currently in use, including: (1) Insufficient specificity of risk assessment; (2) Insufficient ability to predict risks in advance. To solve the issues above, technique of Performance Based Risk Monitoring and Predicting(PBRMP) is proposed in this paper, which is based on the combination of Prognostics and Health Management(PHM) and Risk Monitor. And a case study is carried out to verify the proposed technology, based on Level 1 PSA model of Fuqing 5/6 unit. The case study indicates that: (1) The proposed methodology is feasible; (2) By use of the proposed technology, the risk of NPPs can be monitored and predicted based on the performance of components; and (3) Compared with the existing risk monitor technology, it can improve the pertinence and authenticity of risk assessment, and also the ability to predict risks in advance. It is an innovative application of intelligent technology in the field of nuclear safety, leading to complementary improvement of PHM and Risk Monitor technologies.
