In a waste treatment plant, an explosion that occurred around 1.30 pm destroyed a 5-tonne tank truck containing waste water with low concentrations of sodium coming from a chemical plant. Six people were reported injured including one person who sustained severe injuries. Pieces of the truck were projected as far as 250 m from the site of the accident. The operator took charge of ground clean-up operations.

The ensuing investigation revealed that the carrier had violated regulations on transportation of hazardous substances: defects observed during the previous technical inspection of the vehicle, engine oil leak, etc. Several assumptions were made to explain the reasons behind the explosion: defective vehicle, (oil leak), possible overpressure in the tank (no hydraulic test

certificate), combination of some molecules contained in the various waste products transported before the accident (no clean-up certificate before the last loading operation), etc.