Pollution
Humain
Environnement
Economique

In a workshop for the manufacture of explosive objects by molten explosive loading, a tank containing 300 kg of molten explosive (Hexolite 65/35 at 85 ° C.) drops around 9 h. The tank is conveyed by overhead conveyor to the site where the explosive is used by casting. In a corridor, she is struck by a trolley carrying 320 kg of explosive fired by an operator. The latter did not respect the flashing red light preventing him access to the gallery. Performing his maneuver backwards, he did not see nor anticipated the arrival of the tank. The shock causes the vat to fall off, which drops 80 cm on the ground. The tank is deteriorated but no pyrotechnic phenomenon occurs. The double casing of the tank cushioned the fall and the wet ground probably prevented the initiation of traces of explosive during the fall.

The operator reinforces the periodic inspection of the hooking devices of the tank. Indeed, the examination of the bracket held fast to the tank by 2 bolts of 20 mm diameter made it possible to establish that one of the bolts had a break initiation at the break. He is studying another way than traffic lights to regulate traffic (physical barriers). A phenomenon of habituation of the experienced worker had made him lose the notion of the danger and the importance of the respect of the instructions. The operator reviews the safety study of the installation.