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HIAD Classification of the Physical Effects: Hydrogen Release And Ignition


A pick-up truck pulling a trailer carrying compressed hydrogen crashed in Ohio yesterday. The hydrogen leaked and ignited, producing flames ten metres into the air. The hydrogen quantity transported…
The fire started 3 hours after being shut down. The unit was shut down and the fire extinguished.The oven contained only gaseous products and mainly hydrogen.
The event occurred while starting a new production cycle. The production supervisor issued specific instruction on a new production cycle to a technician. The technician did not follow them in the…
At least one person was injured in an explosion at a theatre building. The investigation concluded that the accident has been caused by hydrogen entering the sprinkler room from the sprinkler piping…
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…
The event occurred during the decommissioning of a nuclear power plant. It involved a tank containing 100 kg of residual sodium from the decommissioned experimental nuclear reactor which was using…
At about 3:15 p.m. on Dec. 3 2003, personnel in the Expended Core Facility at the Naval Reactors Facility heard a loud, unexpected noise. Upon investigation, personnel found an irradiated material…
Heavy rains (more than 600 mm in 1 day) had flood a factory manufacturing calcium core electrical conductors. The power supply was cut off. The water came into contact with the calcium stored in 150…
The event occurred in a silicon hydride (SiH) emulsion production process inside an enclosed production building. The process generated a flammable gas cloud gas ignited, which later ignited causing…
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…
The incident occurred in an electrostatic filtration unit. When flushing with air during the start-up phase of a sulphonation plant, an explosion occurred in the upper partof the electrostatic…
An explosion occurred in a electrolyzer cell, the vent blew up and caused a pipe rupture on the low pressure chlorine pipeline. The event occurred when two operators were improving the tightness of…
The explosion took place in the hydrogen gasometer. The bell in the gasometer was lifted 15-20 m straight up and cracked. The cover fell down on the pipe bridge besides the gasometer. The cylindrical…
The explosion occurred while starting up for the first time a hydrogenation reactor.The reactor was being commissioned, by performing tightness tests under hydrogen atmosphere at very high pressure.…
Leaking hydrogen ignited at a plant that processes bitumen from oil sands.
An in-line inspection of the hydrogen pipeline was being conducted and prior to the last run of the in-line inspection tool (mfl), hydrogen gas was released and ignited from a blind flange connection…
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…
The soldiers of the Royal Prussian Air Ship Division stored large amounts of hydrogen gas. They kept some 1000 cylinders in a shed. On 25 May 1894 about 400 of them burst without apparent reason.…
A fire and a series of explosions occurred on a petrochemical plant, causing damage to process vessels, containment walls and process utility piping. It is believed that lightning struck a two story…
The explosion occurred in a plant for the production of butter. It was due to the rupture of a hydrogen tank, during a sterilization process at high temperature (so-called UHT treatment). Two…
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