Reliability of digital reactor protection system based on extenicsReportar como inadecuado

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After the Fukushima nuclear accident, safety of nuclear power plants NPPs is widespread concerned. The reliability of reactor protection system RPS is directly related to the safety of NPPs, however, it is difficult to accurately evaluate the reliability of digital RPS. The method is based on estimating probability has some uncertainties, which can not reflect the reliability status of RPS dynamically and support the maintenance and troubleshooting. In this paper, the reliability quantitative analysis method based on extenics is proposed for the digital RPS safety–critical, by which the relationship between the reliability and response time of RPS is constructed. The reliability of the RPS for CPR1000 NPP is modeled and analyzed by the proposed method as an example. The results show that the proposed method is capable to estimate the RPS reliability effectively and provide support to maintenance and troubleshooting of digital RPS system.

KeywordsRPS Response time Extenics Reliability  Download fulltext PDF

Autor: Jing Zhao - Ya-Nan He - Peng-Fei Gu - Wei-Hua Chen - Feng Gao


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