A SYSTEMIC APPROACH TO A RAILWAY ACCIDENT SCENARIO ANALYSIS

초록

The objective of this study is to devise an accident scenario analysis method for creating accident scenarios at the Preliminary Hazard Analysis (PHA) step of a hazard analysis for railway system. This approach was inspired by the Quality Function Deployment (QFD) method, which is conventionally used in quality management and is used at the systematic accident scenario analysis (SASA) for the design of safer products. In this study, QFD provides a formal and systematic schema to devise accident scenarios while maintaining the objectivity. The accident scenario analysis method first identifies the hazardous events and explains the hazardous conditions that surround the accident and cause railway accidents. This method includes a feasibility test, a clustering process and a pattering process for a clearer understanding of the accident situation. Since this method enables an accident scenario analysis to be performed systematically as well as objectively, this method is useful in building better accident prevention strategies. Therefore, this study could serve to reduce railway accidents and could be an effective tool for a hazard analysis.