During the shipments of incinerator bottom ash, flammable gasses including hydrogen generated and caused two explosions. The first explosion was in the forecastle store and the second in the cargo hold.The vessel was loaded with a cargo of 2333 tonnes of unprocessed incinerator bottom ash. The chief engineer, who was inside the forecastle store at the time, suffered second degree burns and was airlifted to a nearby hospital.

A tank receives, after a negative reactivity test with the bottom supernatant of the tank, 20 m of methyl hydro-dichloro-silane, then 24 m of a mixture of oil and tar (negative reactivity test) and 10 m of a Tar mixture (no reactivity test). Simultaneously, the operator feeds an oven by pumping into the tank. A reaction appears 24 hours after these discharges, filters clog up, the tank overflows, then the reaction stops. The management states that there is no danger; 15 days later a sudden release of hydrogen occurs with a projection of solid polymer within a radius of 25 m.

In the acid treatment room of a Seveso low-threshold hazardous waste treatment centre, an explosion occurred on a 250 m concrete tank containing acid sludge being neutralized. The explosion occurred when the employee left the room and cut off the lighting of the building. The building was evacuated. The employee, severely burned, was transported to the hospital. Firefighters intervened. The concentration close to tank ceiling was 80% of the LFL. The operator filled the tank with water. The next day, the concentration was less than 10% of the LFL.The upper hatch of the tank was torn off.

When waste alkali solution was taken out of dumper trucks into a waste liquid storage tank, a reaction occurred in the tank. As a result, the solution in the tank foamed over it, and reached an incinerator burning waste wood, when all the waste solution got in flames. The cause of the incident was the waste alkali solution with heavier specific gravity than water, which sank in a mass and came into contact with aluminum powder that had accumulated at the bottom the tank. This resulted in generation of hydrogen gas, which was ignited by fire at the incinerator.