核安全2026，Vol.25Issue(3)：16-23,8.DOI:10.16432/j.issn.1672-5360.2025101301
风险指引型安全分级中纵深防御评估方法研究
Defense-in-Depth Analysis Methods in Risk-Informed Safety Classification
李龙 1孙佳佳 1耿奎 1杨智1
作者信息
- 1. 苏州热工研究院有限公司 核安全与运行技术中心,深圳 518000
- 折叠
摘要
Abstract
Risk-informed safety classification combines quantitative safety significance evaluation methods with qualitative defense-in-depth analysis to categorize nuclear power plant systems and equipment into four classes:RISC-1,RISC-2,RISC-3,and RISC-4.The quantitative safety significance evaluation,based on PSA models,involves clear implementation steps and well-defined criteria,making it relatively straight-forward to execute.However,the qualitative defense-in-depth analysis lacks specific case studies and relies heavily on expert judgment,leading to numerous challenges in practical application.This paper summarizes the difficulties encountered and corresponding solutions during the pilot implementation of risk-informed safety classification,particularly in applying defense-in-depth analysis.The aim is to provide a more action-able guidance method for domestic nuclear power plants adopting risk-informed safety classification.关键词
风险指引/安全分级/高安全重要/低安全重要/纵深防御Key words
risk-informed/safety classification/high safety significance/low safety significance/defense-in-depth分类
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李龙,孙佳佳,耿奎,杨智..风险指引型安全分级中纵深防御评估方法研究[J].核安全,2026,25(3):16-23,8.
