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.

The event occurred at the flanges on the outlet of a desulfurization reactor, which was working under about 300 degrees C The flanges and bolts were cooled down by a large amount of rainwater which had got into the rain-cover around the flanges. This caused the material to shrink and made the flanges too tight, putting too much stress on the ring gaskets which deformed and damaged. As a result, hydrogen gas and light oil mist leaked out and ignited spontaneously, causing damage to pressure gauges and insulation of pipes.

Flask explosion due to hydrogen in the science class.

The nuclear plant was a boiling-water reactor with an output of 0.54 million kW. The component affected was a steam piping (inside diameter: 15 cm; thickness: 1.1 cm) of a heat exchanger used for removing residual heat from the reactor. The piping was broken during a test of a high pressure core injection system for cooling water provided for an emergency core cooling system. The incident resulted in a leakage of radioactive gases. The part of the piping broken was located on the 2nd floor of the building, but there were no workers there.

The event occurred at the factory producing multilayer circuit boards by a multistep dip operation. An employee inadvertently mixed 55 gal of 50 percent hydrogen peroxide into 110 gal of 30 percent formaldehyde. This resulted in a carbon monoxide and hydrogen release. The facility was evacuated and the local fire department and ambulance responded. 14 workers, out of whom three were from temporary employment agencies, were treated for inhalation and released.The employee did not look carefully at the label on the hydrogen peroxide drum.

a hydrogen recycle compressor shut down unexpectedly, resulting in flaring activity with visible smoke.

A man was burned when a fire broke out as a hydrogen cylinder was being changed in a governmental research centre. It was reported that the fire was started by a spark from a wrench. The sprinkler system put out the fire within minutes. A four litre (one US gallon) container of hydrochloric acid was broken during the incident, but caused no injuries. Several containers of methanol in the same area were not affected. The building was evacuated. Canberra makes nuclear instruments.

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.

On a cold morning, the gasoil hydro-treatement unit was being brought back on line after being out of service to repair a governor problem on the recycle gas compressor. Several upset trips had occurred in the previous month but these were not seen to have any direct bearing on the operation of he hydrogen heaters or the unit as a whole, Temperature at the coil outlet of both heaters was at least 100 degrees C lower than normal since the unit was in a start up mode. The reactor circuit was at full operating pressure while hydrogen was recycled via a compressor.

Two employees were working on a electric furnace under hydrogen atmosphere that had jammed. The furnace exploded. The employees sustained flash burns to their faces and were taken to the hospital, where they were treated and released later the same day. The retrieval tool they were using was not suitable for servicing a hydrogen furnace, and may have been the ignition source for the explosion. The furnace had not been purged for 10 hours, as required by the manufacturer.