At 3:38 pm in a prefabricated workshop of an explosives production plant, an employee used an aluminium spoon to mix a triggering composition made from magnesium, Teflon, a rubbery product and acetone when the spoon caught fire, slightly burning the employee on the right hand. She left the premises and sounded the alarm; the flames spread quickly throughout the prefabricated facility due to the acetone metal bottle acting like a torch. The internal safety teams, supported by public emergency and rescue services, extinguished the fire within 20 min. The 50-m² workshop was totally destroyed; 2 adjacent production buildings sustained slight damage. Upon completion of an in-house expert appraisal, the operator assigned the probable cause of acetone vapour ignition to an electrostatic discharge between the metal spatula and some insulating components of the mix during its stirring.

The operator moved the workstation and the team in order to ensure the flow of electrostatic charges. He also installed a relative humidity monitoring system for the room, with an activity shutdown order in the event of insufficient humidity. The required solvents were also stored in a fire-resistant control box, and the quantities of active material authorised at the workstations were lowered.