Statistical Analysis using Accident Scale Curve about Explosion / Fire

Abstract

The statistical analysis about industrial accidents offers various basic information in decision of accident preventive measures. In this paper, frequency and severity were analyzed by the accident scale curve about the explosion / fire accidents. In the analysis, casualties was used as the accident scale and cumulative probability was used as the density function of frequency. On the log-log graph, the relationship of the cumulative probability of casualties and the accident number was shown in a straight line. The gradient of the straight line expresses severity. The combination of this severity and frequency was analyzed. In the case of all industries, the frequency decreased first with the pass of years. After that, severity decreased. The severity of the chemical industry was higher than the severity of the construction industry clearly. However, each trend of the severity with athe pass of years was indefinite. In addition, the analysis results about changes by the type of industry or accident were shown.