基于MODSafe方法的APM安全完整性等级分配
王一先陈瑱管佩瑶
SIL Allocation of APM Based on MODSafe Method
WANG YixianCHEN ZhenGUAN Peiyao
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作者信息:中车浦镇阿尔斯通运输系统有限公司，241060，芜湖
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Affiliation:CRRC Puzhen Alstom Transportation Systems Ltd., 241060, Wuhu, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.09.013
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中图分类号/CLCN:U298∶U239.8
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栏目/Col:研究报告
摘要:
［目的］APM(旅客捷运系统)对安全性的要求非常高，既有的SIL(安全完整性等级)分配方法难以高效、准确满足APM项目的需求。为确保APM的安全性和可靠性，应对APM的SIL分配、确定安全目标进行更为深入的研究。［方法］阐述了APM既有的SIL分配方法，提出采用目前已获得多方认可的MODSafe(模块化城市交通安全保障分析)方法对APM的SIL进行分配。介绍了MODSafe方法的基本步骤，明确了高安全需求、低安全需求2种模式下APM的SIL分配步骤。进一步以APM的列车冲击控制功能为例，阐述了基于MODSafe方法进行SIL分配的技术思路。［结果及结论］在设计的初期就对安全功能进行识别并且确认安全目标，对APM项目的安全交付和开通运营等至关重要。MODSafe方法可用于定量确定APM安全功能的THR(可容忍危害率)及SIL。
Abstracts:
［Objective］ APM (automated people mover) has very high requirements for safety, and the existing SIL (safety integrity level) allocation method cannot meet the demand of APM projects efficiently and accurately. In order to ensure the safety and reliability of APM, further in-depth research should be conducted on the allocation of SIL and the determination of the safety targets for APM. ［Method］ The existing methods for SIL allocation in APM are elaborated, and a widely recognized method MODSafe (modular urban transport safety and security analysis) is proposed and applied for SIL allocation of APM. The basic steps of the MODSafe method are introduced, and the respective SIL allocation steps are clarified under the two modes of high and low safety demands. The technical idea for conducting SIL allocation based on MODSafe method is further elaborated with the train jerk control function of APM as the example. ［Result & Conclusion］ Identifying safety functions and determining safety targets in the initial design phase is crucial for the safe delivery ,operation and other aspects of APM projects. The MODSafe method can be used to quantitatively determine the THR (tolerable hazard rate) and SIL of APM safety functions.
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