Study on Reliability Evaluation Model for the Reactor Protection System Shutdown Function Considering Self-diagnostics

Wang Mingyang; Zhang Wei; Xu Dongling; Cheng Yuyu; Zheng Mingguang

doi:10.13832/j.jnpe.2023.02.0159

Volume 44 Issue 2

Apr. 2023

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Wang Mingyang, Zhang Wei, Xu Dongling, Cheng Yuyu, Zheng Mingguang. Study on Reliability Evaluation Model for the Reactor Protection System Shutdown Function Considering Self-diagnostics[J]. Nuclear Power Engineering, 2023, 44(2): 159-165. doi: 10.13832/j.jnpe.2023.02.0159

Citation:

Wang Mingyang, Zhang Wei, Xu Dongling, Cheng Yuyu, Zheng Mingguang. Study on Reliability Evaluation Model for the Reactor Protection System Shutdown Function Considering Self-diagnostics[J]. Nuclear Power Engineering, 2023, 44(2): 159-165. doi: 10.13832/j.jnpe.2023.02.0159

Citation:

Wang Mingyang, Zhang Wei, Xu Dongling, Cheng Yuyu, Zheng Mingguang. Study on Reliability Evaluation Model for the Reactor Protection System Shutdown Function Considering Self-diagnostics[J]. Nuclear Power Engineering, 2023, 44(2): 159-165. doi: 10.13832/j.jnpe.2023.02.0159

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Study on Reliability Evaluation Model for the Reactor Protection System Shutdown Function Considering Self-diagnostics

doi: 10.13832/j.jnpe.2023.02.0159

Shanghai Nuclear Engineering Research & Design Institute Co., Ltd., Shanghai, 200233, China

Received Date: 2022-04-12
Rev Recd Date: 2022-12-12
Publish Date: 2023-04-15

Abstract

Abstract

As an important feature of digital instrument control system, online self-diagnostics plays an important role in the reliability analysis of shutdown function of reactor protection system (RPS) in nuclear power plant. By analyzing the influence of self-diagnostics on human factors and periodic testing, the component-level spurious actuation model was established. Taking a typical RPS TX as an example, the dynamic TX sequence-level and system-level module spurious actuation models are established by Markov method. The relationship between TX shutdown function reliability and self-diagnostics is quantitatively calculated by using the system-level module spurious actuation model. Through qualitative analysis and quantitative calculation, the necessity of comprehensive consideration of self-diagnostics in RPS shutdown function reliability analysis is demonstrated, which provides a reference for the subsequent reliability evaluation of RPS shutdown function in China.
- Reactor protection system (RPS),
- Self-diagnostics,
- System reliability,
- Spurious actuation,
- Reliability model,
- Markov method,
- Failure rate

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References(11)

References

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