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Erschienen in:
2023 | OriginalPaper | Buchkapitel
Reliability Analysis of Nuclear Safety-Class DCS ESFAS Based on FTA
verfasst von : Xu Zhang, Hao Peng, Shi-Man Feng, Jing-Hua Yang, Shi-Yong Chen
Erschienen in: New Energy Power Generation Automation and Intelligent Technology
Verlag: Springer Nature Singapore
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Abstract
Nuclear safety-class DCS realizes reactor safety protection function, which is directly related to the safe and stable operation of nuclear power plants, so its reliability should be analyzed and optimized. In this paper, the engineered safety features actuation system in nuclear safety-class DCS is analyzed through the control instruction logic flow involved in the structure, according to the components of the series and parallel or voting logic and other logical relations to bulid a fault tree model. Using fault tree model, the reliability degradation trend is obtained, and the minimum cut set, importance degree and other parameters are quantitatively calculated. According to overhaul cycle of nuclear power plant, a maintenance optimization method for engineered safety features actuation system is proposed, and some optimization suggestions are given.