SIL Allocation of APM Based on MODSafe Method
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 9
Abstract
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.
Authors and Affiliations
Yixian WANG, Zhen CHEN, Peiyao GUAN
Keywords
Related Articles
- EP ID EP744321
- DOI 10.16037/j.1007-869x.2024.09.013
- Views 61
- Downloads 0
Research and Application of Crack-resistance Technology for Underground Station Side-wall Concrete Structure
[Objective] Cracking in the concrete of urban rail transit project underground station side-walls can pose a threat to the structural safety of metro stations. It is essential to analyze the causes of cracking in the con...
Construction Optimization of Shallow Railway Tunnels under Unsymmetrical Pressure for Reducing Blasting Over-excavation
Objective Over-excavation in tunnel construction, mainly caused by inappropriate blasting,will affect the smooth progress and safety of tunnel excavation, increase construction cost and reduce economic benefits. In order...
Peck Formula Modification of and Engineering Application in Small Radius Curve Shield Tunneling Construction
Objective In the urban rail transit line planning, curved tunnels, and even small radius curved tunnels are often chosen due to influencing factors such as building foundations, underground pipelines, and weak soil layer...
Orthogonal Experimental Design Method Based on Influencing Factor Analysis of Moisture Content in Metro Vehicle Air Compressor Outlet Pressure Air
［Objective］ The pressure air dryness at the metro vehicle air compressor outlet is a very important indicator. If the water content in the pressure air is high, it will affect the performance of various air-using equip...
Research on AH-model Vehicle Clearance Based on Dynamics Simulation Calculation
Objective The AH-model vehicle combines the characteristics of A and B type model vehicles. Due to its structural differences from conventional metro vehicles, there are currently no corresponding standards on vehicle cl...