This study was designed to assess the safety and health risk in Ilam gas refinery and evaluation of TOPSIS method performance in risk assessment.
After identifying 955 hazards case, the risks were ranked separately in the health and safety sectors using criteria such as exposure level, severity and probability of the occurrence and use TOPSIS multi-criteria evaluation method. Due to the impossibility of determining the level of risk using TOPSIS method, the FEMA method was used for this purpose, and the risk number (RPN) options was calculated.
In the field of safety assessment, personal injury, financial, burns and death from fire due to storage flammable materials in the warehouse, with a similarity to the ideal solution (Cli) of 0.56 was identified as the highest risk. In assessing the health risk, poisoning and impact on the health of employees caused by microbial agents due to the use of expired food in cooking in the restaurant unit as well as respiratory injuries of drivers due to inhalation and gas leakage in the process area and traffic of drivers in the site Cli = 0.66 was identified as the highest risk.
TOPSIS, as a new approach, is capable of being used in the industry's risk ranking and assessment. All the risks were placed at a moderate to low level. Despite the necessity of determining the measures to control the risks, these risks were not an emergency.
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