Hazard analysis of train control system using HAZOP-KR methods

Train control system requires the high level of safety since these are vital control system to ensure safe operation of the train. According to these reason, safety-related regulations for railway signaling systems are standardized in IEC. In Korea, many attempts are tried to procure the level to meet the international standards, but the efforts are beginning steps. HAZOP study is recommended for hazard analysis at IEC standards, but this method has several unsuitable problems because this method is developed in chemical plant domain. In this paper we recommend mew method of HAZOP, named HAZOP-KR, which would be suitable for analyzing safety of the train control systems. AN example of this method applied to real system is also included.