HAZARD IDENTIFICATION AND ANALYSIS OF THE NEWLY DEVELOPED TRAIN CONTROL SYSTEM IN KOREA

초록

A new train control system 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 an 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 safety requirements to guarantee system safety for the first time. In this paper, the hazard identification and analysis to derive the safety requirements on the 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 risks, define the target risks of the system, and deduce the alternative plans to reduce the effects of the hazards. Especially detailed analysis on vehicle collision that is a main hazard of the train control system is carried out."