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Reliability of digital reactor protection system based on extenics
Jing Zhao1, Ya-Nan He2, Peng-Fei Gu3
1Shenzhen Institute of Information Technology, Shenzhen, Guangdong China.
Springerplus
|November 25, 2016
Summary
This study introduces a new extenics-based method to assess the reliability of digital reactor protection systems (RPS). This approach dynamically evaluates RPS reliability, aiding in maintenance and troubleshooting for nuclear power plants (NPPs).
Area of Science:
- Nuclear Engineering
- Reliability Engineering
- Systems Safety
Background:
- Widespread concern regarding nuclear power plant (NPP) safety following the Fukushima accident.
- The critical role of the reactor protection system (RPS) in ensuring NPP safety.
- Challenges in accurately evaluating the reliability of digital RPS, with existing probabilistic methods showing uncertainties and lacking dynamic support for maintenance.
Purpose of the Study:
- To propose a novel reliability quantitative analysis method for digital RPS.
- To address the limitations of current methods in dynamically assessing RPS reliability and supporting maintenance.
- To establish a relationship between the reliability and response time of RPS.
Main Methods:
- Development of a reliability quantitative analysis method based on extenics for safety-critical digital RPS.
- Modeling and analysis of RPS reliability for a CPR1000 NPP as a case study.
- Construction of a model linking RPS reliability with its response time.
Main Results:
- The proposed extenics-based method effectively estimates the reliability of digital RPS.
- The method provides dynamic insights into RPS reliability status.
- Demonstrated capability to support maintenance and troubleshooting activities for digital RPS.
Conclusions:
- The extenics-based reliability analysis is an effective approach for digital RPS.
- This method offers dynamic assessment and practical support for NPP safety.
- The approach enhances the maintenance and troubleshooting of critical safety systems in nuclear power plants.
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