Host: The Japan Society of Mechanical Engineers
Name : The 30th International Conference on Nuclear Engineering (ICONE30)
Date : May 21, 2023 - May 26, 2023
As an important nuclear safety supervision tool, the process of accident sequence precursor (ASP) event evaluation is divided into qualitative screening, quantitative evaluation and statistical analysis. At present, the statistical analysis of ASP events only preliminarily shows the trend of the number or occurrence rate of various types of ASP events over time, and can only rely on the number of events to visually determine major adverse trends, rather than carrying out deterministic analysis of various trends through specific methods. Starting from the ASP events of nuclear power plants, this paper explores and compares different trend analysis methods, focusing on the use of deterministic mathematical methods to carry out the trend analysis of ASP events, so as to identify and determine major adverse trends as soon as possible, and continuously improve the nuclear safety supervision level of power plants with higher quality by combining the quantitative evaluation of ASP events.
