Abstract

Abstract Diversity design is an effective measure to avoid common cause failure, which is of great significance to improve the reliability and safety of nuclear power plants. Especially for those high-frequency occurring accidents mitigation, diversity design plays a significant role. In order to improve its reliability and safety, this paper takes a PWR nuclear power plant as the research object, establishes a diversity design method to mitigate high-frequency occurring accidents, and applies this method to optimize the design of nuclear power plant. In this paper, the safety system of the power station is studied, and a variety of design methods are applied to optimize the design scheme. The results show that this method not only significantly improves the reliability and safety of nuclear power plant, but also plays a great role in the economic operation of nuclear power plant.

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