Assessment of Operating Safety State of Nuclear Power Plant Based on Improved CAE Method

In order to solve the real-time quantitative assessment of nuclear power plants, a safety state assessment model of nuclear power plant based on CAE (Claim-Argument-Evidence) theory is constructed. From the aspects of reactivity control, core cooling and radiation shielding model the nuclear power plant as a hierarchical node assessment structure with information of weight distribution and safety assessment value. The weights of the assessment factors are allocated according to the dynamic optimization value of the security assessment variables. Based on the above methods and visualization tools, a real-time human-computer interaction system for evaluating the security state of typical systems is developed. Finally, the real-time operation data and simulation method of nuclear power plant proves the correctness and practicability of the assessment model and algorithm.