Safety pre-evaluation method for rail transit signal system

Abstract

The invention discloses a safety pre-evaluation method for a rail transit signal system. The method includes the steps that a safety pre-evaluation model is established, wherein the safety pre-evaluation model comprises task elements, personnel elements, equipment elements, management elements and environmental elements; all historical safety events of the rail transit signal system are arranged into a pre-evaluation safety database according to the safety pre-evaluation model; the rail transit signal system is divided into several evaluation objects according to tasks; a signal system risk check table is made according to the pre-evaluation safety database; risk evaluation calculation is performed on each evaluation object according to the signal system risk check table; a risk rating result is determined according to calculation results, and weak links of the signal system are found out according to the risk rating result; risk control measures are developed for the weak links. The method meets the requirement for safety pre-evaluation on the rail transit signal system and improves the safety of the rail transit signal system.

Description

technical field [0001] The invention relates to a safety pre-assessment method for a rail transit signal system, which is applied in the field of rail transit safety. Background technique [0002] The rail transit signal system is a key system that comprehensively uses various technical means to ensure driving safety. It is one of the key electromechanical systems with high technical content, high safety correlation and high degree of automation in rail transit engineering. my country's AQ8001-2007 "General Rules for Safety Evaluation" stipulates that an independent third-party safety pre-assessment should be carried out for newly-built and newly put into use rail transit safety-related systems. The signaling system is a highly safety-related system. Therefore, a safety pre-assessment must be carried out before the construction of the rail transit signaling system project. [0003] Safety pre-assessment is the safety prediction of the system before the construction of the ...

AI Technical Summary

Problems solved by technology

These two standards only frame the scope and overall process of the safety pre-evaluation of all rail transit systems, without giving an evaluation method, and the signaling system is a safety-critical system, so its pre-evaluation should be treated with caution and professionalism. It is stronger; and the pre-evaluation is a predictive evaluation before the project is implemented, and it is impossible to obtain the statistical fault data and operation monitoring data of the signal system after the future project is completed and put into use, so the general traditional safety evaluation method is not feasible here; Third, these two standards are only guiding suggestions for pre-evaluation, and do not give the safety pre-evaluation process and specific safety qualitative and quantitative methods for the signal system, resulting in no specific methods for reference in the actual safety pre-evaluation of the signal system

To sum up, the signal system safety pre-assessment must take this complex signal system as a pre-evaluation object, the professional requirements are high, and the pre-assessment method is immature, which makes the actual pre-evaluation work technically difficult

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