Risk assessment of Ilam gas refinery using Job Safety Analysis (JSA) method and its modeling in PHA-pro software

In this research, JSA method has been used to assess the risks and safety risks in Ilam gas refinery, . The risk was studied and then the results were modeled using PHA-pro software. The results showed that out of 15 identified risks, 7 had a risk number higher than 14, which can be said that approximately 46% of the activities were in the high risk area. Most of the values related to checking the seals were in the sulfur recycling unit, which resulted in spraying sulfur in the area outside the seals and causing burns and death. The corrective action was the use of face shields, work clothes and fireproof gloves. The next activity that had a high risk number was loading LPG, which resulted in improper installation of connections, gas leaks, fire / explosion, and damage to people and equipment. Be. It is clear that after the implementation of the control proposals, the number of high-risk cases has been reduced from 7 to 1, and the modeling bar chart has been moved to a safe area. In other words, before the control measures, 46% of the activities were in the high risk zone, 26% in the medium risk zone and 28% in the low risk zone. After the control measures, only 6% of the risks were in the high risk zone and 13% in The middle zone and 81% of them were in the low or safe risk zone.