Abstract
Purpose: Mining industry has always been known for its unsafe working environment. This industry is one of the most hazard prone industries. To maintain safety in workplace timely assessment of risk associated with different operations performed to extract ore from the ore body has become necessity. To serve the said purpose, present work demonstrates a robust hybrid risk assessment approach for mining industry. Design/Methodology: Accident data from 1995 to 2012 is reviewed to identify hazards contributed to negative outcomes. The FRA approach is implemented to evaluate the risk levels associated with identified hazard factors. Thereafter AHP pairwise comparison matrix is developed to obtain priority weights for the hazard factors. Final priority of hazards based on severity of level of risk associated with them is obtained considering the outcome of FRA approach in terms of risk score for the hazards, combined with the priority weights obtained from AHP technique. Findings: Defuzzified FAHP weight of hazard factors, this weight gives priority sequence of hazards to be considered for development of plan of mitigation. Originality/Value: Risk assessment is a requirement of the Occupational Health and Safety Act 2000 (Section 7& 8). The data required to assess the risk is uncertain, and in such case fuzzy approach is well suited to process the data and get the crisp output. The output of fuzzy approach is made robust with its integration to AHP. In this way FAHP can be used as robust technique for risk assessment in this industry and this technique develops an efficient safety management system for the achievement of goal to develop the workplace with zero accident, which many other countries have already achieved.
Highlights
Workers in any industry get adversely affected with hazardous working environment
Defuzzified Fuzzy Analytic Hierarchy Process (FAHP) weight of hazard factors, this weight gives priority sequence of hazards to be considered for development of plan of mitigation
In this way FAHP can be used as robust technique for risk assessment in this industry and this technique develops an efficient safety management system for the achievement of goal to develop the workplace with zero accident, which many other countries have already achieved
Summary
Workers in any industry get adversely affected with hazardous working environment. As a result of this, injuries, fatalities, loss of man hours, loss of work days come into visibility. Risk assessment is a technique which helps mine operators to identify low, medium, high levels of risk associated with hazards This will help them to prioritize the hazards based upon the levels of risk associated with them, so that hazard with highest potential to cause harm can get mitigate and safe work environment can be developed. All the necessary steps required for evaluation of risk levels associated with identified sub criteria/hazard factors, using fuzzy rule base reasoning approach consists of following four major components. In this component all the potential causes which can cause a mishap are identified. Annual report generated by Directorate General of Mining Safety (DGMS) provides year wise, places wise, cause wise, accident data for both metalliferrous and non metalliferrous mines
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