现代安全完整水平的安全指数 (SIL) 是否真正适用于铁路?
Yuan Cao1, Yuntong An2, Shuai Su3
1State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044, China; National Engineering Research Center of Rail Transportation Operation and Control System, Beijing Jiaotong University, Beijing 100044, China; School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China.
Accident; analysis and prevention
|September 14, 2023
概括
铁路安全依赖于IEC 61508和EN 50129等标准. 本研究提出了计算中国铁路安全指数的新方法,解决了当前安全完整性水平 (SIL) 指标的局限性.
科学领域:
- 铁路工程 铁路工程是指铁路工程.
- 运输安全运输安全
- 风险管理 风险管理
背景情况:
- 国际安全标准IEC 61508为铁路运输安全评估提供了一个框架.
- 标准EN 50129和安全完整性水平 (SIL) 源自IEC 61508,该标准建立了铁路安全指标.
- 目前基于SIL的安全指数可能无法跟上社会和经济的进步.
研究的目的:
- 分析与安全相关的系统可靠性,可接受的风险和安全指数之间的关系.
- 在现代背景下解决现有的SIL规定的安全指数不足的问题.
- 提出计算相关铁路安全指数的新原则和方法.
主要方法:
- 对安全标准进行系统分析 (IEC 61508,EN 50129).
- 检查系统可靠性,风险和安全指数之间的联系.
- 开发安全指数的新计算原则和方法.
- 利用最近的中国铁路数据进行验证.
主要成果:
- 在可接受的风险和安全指数之间建立了明确的关系.
- 确定了当前SIL指标在反映当代安全需求方面的局限性.
- 提出了计算铁路安全指数的新框架.
- 基于经验数据提出了中国铁路安全指数的参考.
结论:
- 安全指数基本上是基于可接受的风险水平.
- 现有的安全完整性水平 (SIL) 指标需要更新,以与不断变化的社会和经济进步保持一致.
- 拟议的方法提供了一个更准确和更相关的方法来评估中国的铁路安全.
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