Statistical analysis and risk assessment of working accidents at the Kerman Coal Mines in Iran (original) (raw)

During the years of 1997-2005 at the mines and coal washing plant of Kerman 2896 accidents had occurred. The average frequency of accidents equals to 21.51 accidents per one million man-hour of work exposure and the severity of the accidents and frequency–severity index were obtained 0.29 and 0.08 respectively. The evaluation of the accidents reveals that the total number of the fatally accidents were 30, that the most of them happened in the Main Pabedana coal mine. Then for risk assessment, probability of events and their severity in 2005 were quantified and the following consequences were obtained: (i) Accidents due to the roof collapse and the probability value of 3.16*10-4 with severity degree of catastrophic and high risk. (ii) Accidents due to the collision with the probability value of 3.6*10-2 and severity degree of critical and high risk. (iii) Accidents due to the sudden dropping with the probability value of 2.35*10-3 and severity degree of major and high risk. (v) Accid...