A hydrogen plant exploded, throwing debris for tens of metres and badly damaging the plant. The two workers in the plant at the time were not seriously injured. The plant reportedly had a capacity of 3,600 tonnes/year of liquid hydrogen. On November 13 it was reported that the Commission de la sant et de la scurit au travail (CSST - Commission for Health and Safety at Work) would not be conducting an inquiry because no one was killed. On November 19 it was reported that the liquid hydrogen section appeared to have been destroyed.

A hydrogen gas holder exploded.It is assumed that there was diaphragm leak in the hydrogen-oxygen electrolytic cell used to produce high purity hydrogen for a pharmaceutical hydrogenation.

The fire ignited roofing materials which had fallen down as the result of the explosion.The operator, who was outside the plant when the explosion occurred, pulled the emergency switch which shut down all the compressors. Although in a dazed condition he then checked in the motor room that all the motors had stopped. He was subsequently taken to hospital where he was found to have no physical injuries but was moderately shocked. The fire alarm was raised by the Gatekeeper who had heard the explosion and seen flames and smoke in the vicinity of the hydrogen plant.

A crack occurred in a storage tank (300 kg of hydrogen) releasing gaseous hydrogen to atmosphere. The vapour cloud exploded with an apparent centre of explosion 9 m above ground, with a energy equivalent to 9 to 18 kg of TNT.

Fire due to hydrogen gas leakage.

A fire occurred on a plant. The fire resulted from an escape of liquid hydrogen from a joint between an isolating block valve and a relief valve on one of the separation column preheater. The relief valve had been under repair and was being brought back onto line when the incident happened.An investigation team was appointed. The first task was to confirm that it was safe to resume operation in the section of the plant.

An explosion occurs in the oxygen gas holder in an electrolysis plant. The explosion is due to the entry of hydrogen in the oxygen gas holder.The dome of the gas holder and the collar were blown away.

The explosion occurred at the hydrogen producing unit of a refinery.A solution of potassium carbonate was being drawn off from an absorption tower to a temporary storage tank for a turnaround shutdown maintenance. The tank exploded, due to backflow of hydrogen into the tank. The level of the solution in the tower was not checked. When a water solution in an absorption tower for carbonic acid gas is drawn off, the water level of the solution drops. This drop \was ignored and the pump cavitated.