Reliability Modeling and Analysis of Nuclear Power System with Common Signal Based on Goal-oriented (GO) Method

Through the investigation of the research status of commonly used system reliability modeling and analysis methods, this paper mainly gives a new definition and rules for more stringent system reliability common signals. At the same time, the precise algorithm for the common signals of the existing GO method is improved. Furthermore, a reliability modeling and analysis method for nuclear power systems with common signals based on GO method is established. Finally, the lifting mechanism inside the nuclear island was selected as a system analysis case with common signals, and the reliability modeling and analysis are performed using the method proposed in this paper. The results of the analysis were compared with the results of quantitative analysis of the Monte Carlo method, which verified the correctness and applicability of the proposed method.