title: Reliability of digital reactor protection system based on extenics.
abstract: 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.
authors.affiliation: Shenzhen Institute of Information Technology, Shenzhen, Guangdong China.
authors.forename: Jing
authors.identifier: 0000-0002-4195-7429
authors.initials: J
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment, China Nuclear Power Design CO., LTD, Shenzhen, Guangdong China.
authors.forename: Ya-Nan
authors.initials: YN
authors.lastname: He
authors.affiliation: Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advance-d Nuclear Energy Technology, Tsinghua University, Beijing, China.
authors.forename: Peng-Fei
authors.initials: PF
authors.lastname: Gu
authors.affiliation: State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment, China Nuclear Power Design CO., LTD, Shenzhen, Guangdong China.
authors.forename: Wei-Hua
authors.initials: WH
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment, China Nuclear Power Design CO., LTD, Shenzhen, Guangdong China.
authors.forename: Feng
authors.initials: F
authors.lastname: Gao
keywords: Extenics; RPS; Reliability; Response time