On the 29th December 2018 at around 14:35 a water well injection company requested support from a welding workshop (through site in charge) in a welding repair to a tanker. The tanker arrived at the workshop at 15:45 where n welder, began the welding repair of the rear outlet valve. During this activity the unknown substances inside the tanker ignited, resulting in an explosion ripping through the front portion of the tank and drivers cab as well as the workshop roof.