Investigating the Probable Safety and Invironmentally Consequences of Propane Reservoir Incidents in Behran Oil Refinery by using PHAST Software
Subject Areas : Chemistry and Chemical Engineering of all specializations
Hamid Ansari
1
,
Fatemeh Ardestani
2
1 - Department of Chemical Engineering, QaS.C., Islamic Azad University, Qaemshahr, Iran
2 - Department of Chemical Engineering, QaS.C., Islamic Azad University, Qaemshahr, Iran
Keywords: Explosion, PHAST, Process incidents, Propane reservoir, Risk assessment,
Abstract :
Leakage of flammable substances from storage tanks of petroleum products is a dangerous factor of fire and explosion. The consequences of the explosion of propane tanks were evaluated. The stages of study was determining the objectives of outcome assessment, unit description, risk identification, scenario analysis, modeling the consequences and determining the methods of controlling and reducing the consequences. Five causes and two consequences were investigated in three scenarios to create the BLEVE phenomenon using PHAST software. By creating an explosion wave from the origin to a radius of 80 meters with a power of more than 0.3 bar, the person in the closed or open space is 100% damaged and from a radius of 80 to 150 meters at a pressure of less than 0.3 to 0.1 bar, the person was 25% injured indoors and unharmed outdoors. In case of inlet line leakage, flame length, radiation power and eruption speed were estimated to be 56.34 m, 190.48 kW/m2 and 278.89 m/s, respectively. The strength of the BLEVE phenomenon from the origin to a radius of 30 meters was equal to 0.2068 bar, from a radius of 30 to 40 meters, 0.1379 bar and from a radius of 40 to 155 meters 0.02068 bar. Enclosing the reservoir area, periodic technical inspections, forming an emergency response team, rapid evacuation of people, detect gas leaks, controlling fire sources and ignition shutting down the system can reduce the risk of manpower and invironmental damages to a safe level.
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