A Study on Development of Railway Accident Scenarios for Railway Workers

초록

An accident scenario analysis is conducted to understand, analyze, and describe the process of and the behavior pattern of accidents. An accident scenario identifies the pattern of the accident, and provides data to prevent the accident. Although much work has been done for the railway accident scenario analysis, systematic and formal methods which identify generate, analyze, and verify railway accident scenarios, are scare in our view. The objective of this study is to develop fatality accident scenarios for railway workers and assess the risk for each scenario. In this research, we develop accident scenarios using the Quality Function Deployment (QFD) method to analyze systematically and evaluate quantitatively fatality accident scenarios for railway workers. The QFD method has been conventionally used in quality management and was used at the systematic accident scenario analysis (SASA) for the design of safer products. In this study, the QFD method provides a formal and systematic schema to devise accident scenarios while maintaining the objective. The accident scenario analysis method first identifies the hazard factors that may cause an accident and explains the situation characteristics surrounding the accident. This method includes a feasibility test, a clustering process and a pattering process for clear understanding of the accident situation. The results of this research can be used in analyzing the major causes and contributing factors of fatality accidents for railway workers at the step of hazard identification, and assessing quantitatively the frequency and severity. Since this method enables an accident scenario analysis to be performed systematically as well as objectively, this method is useful in establishing better accident prevention strategies. Therefore, this study can serve to reduce railway accidents and be an effective tool for a hazard analysis.