HAZOP Study and Determination of Safety Integrity Level Using Fault Tree Analysis on Fuel Gas Superheat Burner of Ammonia Unit in Petrochemical Plant, East Java

Safety is an essential requirement in the course of production in the industry. Security in the factory needs to be considered, especially against malicious nodes such as burner. In this research analysis to determine opportunities hazard that could happen to superheat burner. The magnitude of the risk of harm must be balanced with the security system (SIS). So the system superheat burner analyzed by the method HAZOP and SIL safety level calculated through the method of FTA. Based on research conducted in this thesis, superheat burner has a high danger risk (high risk) component TT-1005 and PT-1018. The level of security superheat burner classified SIL 1 with PFD 4.38x10-2, so do redesign the SIS to achieve SIL 2. PFD system of 0.0099 is achieved by adding 2 ESDV on line check fuel gas and purges gas and increase the pressure switch on each function pressure switch. (PSHH, PSL, PSLL).Â