This study aims to determine the maximum extent of pollution, caused by the leakage of Pentanefrom a storage tank within the transport and storage center (CSTF), located in HassiR’mel cityLaghouat province Algeria; To achieve the desired results, we relied on ALOHA® v. 5.4.7 software(Areal Locations of Hazardous Atmospheres) for accidents simulation, and Google Earth as anoutput tool to show results on the city map. The results prove that the city of HassiR’Mel is almostcompletely threatened by thermal effects resulting from a BLEVE phenomenon, which can reacha distance of 2.3 kilometers.