Department of Gas Engineering, Petroleum University of Technology, Ahwaz, Iran
A consequence analysis was performed in one of the gas refineries in Iran to investigate the risks and potential losses resulted from accidents. Specifically, the consequences of an explosion in LPG spherical tanks were modeled using PHAST and MATLAB software. In this paper, three methods of calculation of PHAST software TNT, multi-energy, and BST were used. The results showed that multi energy method is the best method to evaluate overpressure. It was 0.150 bar and 0.159 bar in a distance of 1000 m far from the blast using PHAST and MATLAB respectively. This overpressure can damage a wall with 30 cm thickness. It also affects the human threshold (1%) ruptured eardrum. Finally, it was found that 100% lethality in a minute happened at 285.5 m and 37.5 kW/m2 when the explosion happened.