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Amuay accident 2012 is one of similar accidents happened in Buncefield (2005), Jaipur and Puerto Rico (2009), respectively. Since experimental reproduction of such accidents is not always possible numerical simulations help a lot to understand the scenarios on qualitative basis. In this work the accident is reproduced with a CFD model which takes into account the heaviness of the gas (LPG), wind and gravity driven spread. The leak was reported to be located near a number of spherical tanks. The ignition source was presumably the running vehicles on a nearby street. A part of the refinery containing the locations of leakage and ignition was considered as computational domain. The road is located at the eastern boarder. The area contains different tanks, whose height was estimated due to a lack of available data. The diameter was extrapolated from the available image data. Further, a grid of walls is located between a number of tanks. The total domain has a size of 750 m x 400 m x 50 m. An unstructured mesh was created using tetrahedral elements with prism layers at the ground to improve mesh quality in the boundary layer. The mesh has a total number of 775 686 cells.