HIAD Event Initiating System: Hydrogen System Initiating Event

The plant was operating at 92% power when a ground fault on a land steam exhauster caused the supply breaker to a motor control centre (MCC) to trip. This supply breaker could not be reclosed. The…

A hydrogen leak sparked a fire at a power plant, burning a 30-foot hole in the roof. Only one of the plants four turbines were shut down.

A hydrogen fire occurred in a nuclear power plant outside the controlled area. The leaking point was on a pipe system of the distribution circuit of the gas network (6 bar nominal working pressure…

The vent occurred outside a fuel cells manufacturing facility. While preparing for transfer of liquid hydrogen from tanker truck to storage tank, a release of hydrogen occurred, which vaporized into…

A 2-inch line carrying hydrogen gas at approximately 2,800 psi (approximately 19.3 MPa) failed at a weld, resulting in a high pressure hydrogen fire. The fire resulted in flame impingement on the…

A lorry loaded with gaseous hydrogen cylinders caught fire and shut a motorway.No one has been injured.

The fire occurred after a hydrogen released from a venting valve opened for inspection. The hydrogen was at 300 bar and 300C centigrade. The hydrogen ignited probably spontaneously and killed 4…

A malfunction in the turbine generator resulted in a fire and caused the operators to manually shut the reactor. The turbine generator transforms steam into electricity and hydrogen is used as a…

A hydrogen leak occurred on the hydrogen line of a hydro-desulfurization unit, followed by ignition . The failure was located on a supply manifold of the unit at a support beam. The unit was shut…

Hydrogen leaked from an analyser and ignited .On-site staff isolate the leak. As the leak was very quickly isolated, the amount of hydrogen released was negligible. Event no. 35501 of the French…

The hydrogen jet fire a pipe have been detected by a night operator which was making rounds in a solvent production unit. The unit's emergency response team managed the fire in minutes. Operators…

Three workers were working in the sulfur recovery unit (SRU), trying to restore the hydrogen flow. The workers were trying to isolate the cause of a flow problem: hydrogen was entering the…

A detonation was heard and the hydrogen supply of the site was automatically shut down by the safety devices.The fire was caused by a hydrogen leak and led to the formation of a fireball at the end…

The fire occurred in the hydrogen treatement unit of hydrodesulfurisation plant.

The fire occurred around 13:20 on three cells of the chlorine manufacturing unit. A leak of hydrogen in the electrolysis room was at the origin of the fire; the ignition of the H2 cloud caused a…

The fire occurred on a flange of a hydrogen supply line to a desulfurization reactor unit of diesel, which leaked and ignited (30 cm flame) The leak was stopped by isolating the part of line…

The incident occurred at a power generator during the shutdown of one reactor unit. Hydrogen leaked from the cooling circuit of the generator due to damaged sealing. The hydrogen ignited. The fire…

On February 3, 1994, a control room operator at Surry Power Station, Unit 1, observed pressure spikes on the pressurizer level instruments. At the same time, a loud rumbling sound was heard in the…

A hydrogen fuel tank release caused a fire at an AC Transit fuel station, prompting authorities to, as a precaution, evacuate several businesses and a high school and to close a number of…

A hydrogen gas leak at an oil refinery ignited