HIAD Event Initiating System: Hydrogen System Initiating Event

A fire on one of the two hydrogen units at a gasoline refinery, hindering production.

A release of compressed hydrogen and subsequent fire occurred during the transportation of truck tractor chassis with a mounted trailer module. The tube trailer module contained 25 fully wrapped…

A hydrogen leak occurred on a sintering furnace in a manufactory of uranium pellets. The event happened during the restart phase after a period of maintenance. The hydrogen ignited at the location…

A fire broke out on the insulating plastic elements of an alkaline electrolyzer in a unit of a chemical plant. The shift saw the smoke from the control room. The first action was to drain the potash…

In a chemical plant, a fire broke out on a hydrogen column of an ammonia manufacturing unit. The internal security service extinguishes the fire with powder and nitrogen injection. The unit was…

A weld on a 1 inch diameter instrument tapping from a Octafiner reactor overhead line fractured, resulting in a small but intense fire, lasting about 50 minutes until the unit was nitrogen purged.The…

A hydrogen leak occurred on a 50 mm pipe feeding a reactor. The leak ignited spontaneously when mixed with air. Thanks to the closing of the input and output valves, the quantity released could be…

The incident occurred in the turbine-generator hall of a nuclear power plant. Hydrogen leaked from the alternator and ignited.The hydrogen line was purged to stop the leak. The plant employees were…

Around 4 a.m., a major leak occurred at the outlet of the diesel hydrodesulfurization furnace in a refinery. The goal of this unit is to lower the sulfur content of diesel fuels produced in other…

In a petrochemical plant, a fire occurred on the methanation unit (95% H2 + 5% CO -> CH4 + H2 + H2O) of a steam cracker. A seal break on a flange of the circuit caused of the accident. No…

On April 29, 1991, a nuclear Power Plant experienced a main generator hydrogen fire. Although a senior reactor operator (SRO) and auxiliary operators from another shift were available immediately,…

A truckload of hydrogen cylinders caught fire at plant producing artificial sweetener.

A fire occurred on a valve of a hydrodesulfurisation unit in a refinery. A cable gland was modified. Steaming wreaths are permanently installed.

While filling a 9 litre gas cylinder with pressurised hydrogen in the hydrogen storage area, a blast occurred which destroyed the low pressure gauge, followed by a jet fire which damaged the…

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…

A flash fire enveloped a hydrogen compressor at a refinery.

A triangle flask exploded during a science-class experiment where diluted hydrochloric acid was made to react with zinc to generate hydrogen, at a junior high school. Injures were caused by glass…

According to the media news, the accident involved an explosion of a fuel cell driven forklift during driving, resulting in an employee's death and 6 light injured other employees. The fire did not…

Furnace tube leak caused excessive heat on H2 tube causing rupture

Overpressure caused a cylinder head of a gas compressor to fail causing release of hydrogen followed by a fire during the start-up of the compressor after maintenance.