Gas explosion
（重定向自Vapor cloud explosion）
![The damaged roads after gas explosions in Kaohsiung, ****** on 31 July 2014.](/Images/godic/202502/19/Sanduo_1st_Road_after_Explosion_Record_20140811-0210839.JPG")
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![Recherche de victimes avec chien dans les décombres de l'explosion de gaz (en) à Porto Rico en novembre 1996.](/Images/godic/202502/19/FEMA_-_3870_-_Photograph_by_FEMA_News_Photo_taken_on_11-22-1996_in_Puerto_Rico0839.jpg")
![Le centre historique de Theux dévasté après l'explosion de gaz de 1997.](/Images/godic/202502/19/Centre_historique_de_Theux_dévasté,_après_l'explosion_de_gaz_de_1997,_qui_coûta_la_vie_à_deux_pompiers_volontaires0839.jpg")
A gas explosion is an explosion resulting from a gas leak in the presence of an ignition source. The principal explosive gases are natural gas, methane, propane and butane, because they are widely used for heating purposes. However, many other gases, like hydrogen, are combustible and have caused explosions in the past. Industrial gas explosions can be prevented with the use of intrinsic safety barriers to prevent ignition.