Simulation of Dispersion and Explosion in Petrol Station using 3D Computational Fluid Dynamics FLACS Software

Petrol station are areas that have a high level of risk of fire (Major Hazard Accident), which is a large industrial accident with very detrimental consequences, both human life and other material losses. Cases of fire or accidents at gas stations are still common, recorded during 2016-2018 around 120 cases that resulted in losses for both entrepreneurs and consumers and the community. In this research, simulation and explosion modelling will be carried out using the CFD FLACS software. The case used in this research is at Petrol station X with input variables (wind direction, surface roughness, and day and night conditions). The dispersion simulation results show that the dispersion that occurs cause kidney damage. The explosion simulation results show that the highest overpressure is 0.0064 barg, which is in the scenario of north wind direction, night conditions, and surface roughness of 0.03 m. The overpressure does not cause any damage.