Research and Application of STPA to Digital Reactor Shutdown System in NPP for System Safety Analysis

Liu Chaohui; Chen Zhi; Wu Zhiqiang; Liu Hua; Yang Xiaohua

doi:10.13832/j.jnpe.2015.S2.0157

Volume 36 Issue S2

Feb. 2025

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Liu Chaohui, Chen Zhi, Wu Zhiqiang, Liu Hua, Yang Xiaohua. Research and Application of STPA to Digital Reactor Shutdown System in NPP for System Safety Analysis[J]. Nuclear Power Engineering, 2015, 36(S2): 157-161. doi: 10.13832/j.jnpe.2015.S2.0157

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Liu Chaohui, Chen Zhi, Wu Zhiqiang, Liu Hua, Yang Xiaohua. Research and Application of STPA to Digital Reactor Shutdown System in NPP for System Safety Analysis[J]. Nuclear Power Engineering, 2015, 36(S2): 157-161. doi: 10.13832/j.jnpe.2015.S2.0157

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Research and Application of STPA to Digital Reactor Shutdown System in NPP for System Safety Analysis

doi: 10.13832/j.jnpe.2015.S2.0157

1. School of Computer Science and Technology, University of South China, Hengyang, 421001, China;
2. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chendu, 610041, China

Received Date: 2015-09-13
Rev Recd Date: 2015-10-13

Available Online: 2025-02-15

Abstract

Abstract

Most accidents are caused by dysfunctional interactions among components because of the widely used of digital technology and software nowadays. Traditional analysis methods cannot get a satisfactory result. In order to solve this problem, a new accident model named STAMP which based on system theoretic and STPA application methods. This paper introduces STPA method and its analysis steps in at first. Then we try to apply it for shutdown subsystem in NPPs and get the causal factors and safety constraints which should be obeyed in the design. It was useful for the design safety
- STAMP,
- STPA,
- Reactor shutdown system