基于风险矩阵的轨道交通车辆安全完整性等级分析
张冬梅刘伟
Research on Safety Integrity Level Analysis of Rail Transit Vehicle Based on Risk Matrix
ZHANG DongmeiLIU Wei
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作者信息:中车青岛四方机车车辆股份有限公司，266111，青岛
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Affiliation:CRRC Qingdao Sifang Co., Ltd., 266111, Qingdao, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2020.08.015
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中图分类号/CLCN:U270.1
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栏目/Col:研究报告
摘要:
以风险矩阵为基础，根据可容忍风险边界确定可容忍风险概率。基于IEC 61508，考虑潜在风险影响因素，对可容忍风险概率进行校正，最终确定轨道交通车辆系统安全功能的安全完整性等级(SIL)。通过子系统安全功能的SIL确定子系统风险承受能力，采取适当措施管控子系统级风险，保障列车运行安全。以车门子系统为例,进行SIL分析，分析结论验证了该方法的合理性，可为轨道交通车辆SIL分析方法提供了理论依据。
Abstracts:
Based on the risk matrix, the tolerable risk probability is determined according to the tolerable risk boundary. Based on IEC 61508, the tolerable risk probability is adjusted by considering potential risk factors, thus the safety integrity level (SIL) of the safety function is determined in the end. Through the subsystem safety function SIL, the risk tolerance of the subsystem can be determined, the safety of train operation could be ensured by taking appropriate measures to manage and control the risks. Finally, SIL analysis is carried out based on a train door subsystem, the conclusion verifies the rationality of the method and provides a theoretical basis for rail transit vehicle SIL analysis.
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