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A Hazard Identification and Analysis for the Train Control System of Light Rail Transit  

정의진 (한국철도기술연구원)
김양모 (충남대학교 전기정보통신공학부 전기공학부)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.53, no.2, 2004 , pp. 99-106 More about this Journal
Abstract
Train control system in LRT (Light Rail Transit) is developed as a part of "Light Rail Transit System Development Project". But there was no specific requirement representing the system safety. Because system safety must be ensured before the customization, we applied the system to a officially recognized specific procedure, such as "A Guideline to Ensure the Safety of Train Control System in Korea" that was officially announced by KNR (Korea National Railroad) in 2001. We should draw system safely requirement to guarantee system safety for the first time. In this paper, the hazard identification and analysis to derive the safety requirement on LRT train control system are carried out following the KNR guideline. To analyze hazard, we have to deduce system functions, identify related hazards, derive the effects of the hazards, analyze current risk, define the target risk of the system, and deduce the alternative plans to reduce the effects of the hazards. After the hazard analysis following the upper procedure, 30 hazards are identified and analysed. Especially detailed analysis on train collision that is a main hazard of the train control of system is specially carried out.
Keywords
Light rail transit(LRT); Hazard identification; Hazard analysis; Safety Integrity Level(SIL);
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