Project on Safety Performance Indicators and Risk Level Assessment of Railway Infrastructure

초록

Korea’s railway passenger density is much higher compared to other countries. Also, concerns for the safety of railway facilities have increased due to a high proportion of worn out infrastructures. In this meaning, this paper deals with safety performance indicators and risk level assessment of railway infrastructure in Korea. Indexing and evaluating the safety of facilities in each railway section pursuant to the international standards for railway safety (IEC 62278). ETA (Event Tree Analysis) and FTA (Fault Tree Analysis) were carried out to calculate the probability of an accident developing in each section. Also, the data clustering method is used to develop safety performance indicators. Correlation analyses and three-dimensional surface plot graphs were carried out to statistically prove the correlation between accident rate and track work hour. From the risk assessment matrix, we found out that there must be at least 4.5 hours of work time on railway track or longer to have a stable risk level classification. In Korea, gradually lengthening the time standards for railway track work will be considered in the future