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ABSTRACT
Gas turbines form a crucial component of energy-generating systems, and their failure leads to the failure of the entire energy supply to a system. There are many aspects in the Occupational Health and Safety (OHS) framework that have to be implemented scientifically to bring risks to a more acceptable level. In order to achieve this objective, a fuzzy Multi-Criteria Decision-Making (MCDM), which integrates OHS and risk assessment aspects was applied in a gas turbine manufacturing plant in India. A total of 27 hazards were identified at workplace dominated by Mechanical (44.4%) and Chemical Hazards (40.74%) followed by Electrical and Ergonomic hazards (7.4%). The likelihood and severity parameters in the traditional Decision-Matrix Risk Assessment (DMRA) were identified, and weights were attached to them using the Fuzzy Analytical Hierarchical Process (FAHP). To prioritize the hazards, the Fuzzy VIKOR methodology based on the output of FAHP (Severity-0.69; Likelihood-0.31) was utilized. In the workplace, prolonged exposure to metal polish fumes, dust from pneumatic grinding and hitting against moving parts were identified as three most hazardous activities. Even though the weightage of likelihood and severity were varied in range of 27–52% in the sensitivity analysis, the ranking order of top three hazards remained the same. The proposed fuzzy DMRA simulation model is advantageous over the classic DMRA approach, which does not assign weightage to the risk parameters and allows distinct prioritization of hazards at workplaces.
Acknowledgments
The first author (Pavanaditya Badida) gratefully acknowledges the award of SRF from the Council of Scientific and Industrial Research (CSIR), New Delhi (File No. 09/468/0503/2017-EMR-I), India in pursuit of his Ph.D. study.
Disclosure statement
No potential conflict of interest was reported by the author(s).
Additional information
Notes on contributors
Pavanaditya Badida
Pavanaditya Badida- Research Scholar, Department of Applied Science and Technology, A.C.Tech Campus, Anna University, Chennai
Tamilpriya Selvaprakash
Tamilpriya Selvaprakash- Post Graduate Student, Industrial Safety and Hazards Management, Department of Applied Science and Technology, A.C.Tech Campus, Anna University, Chennai
Jayapriya Jayaprakash
Jayapriya Jayaprakash- Associate Professor, Department of Applied Science and Technology, A.C.Tech Campus, Anna University, Chennai.