HIAD Classification of the Physical Effects: Hydrogen Release And Ignition

The last flight of the Space Shuttle Challenger ended 73 seconds after the launch in an explosive burn of hydrogen and oxygen propellants that destroyed the External Tank and exposed the Orbiter to…

Hydrogen exploded in a compressor unit at a chemical plant, causing a fire.

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.

An explosion occurred on a hydrogen compressor due to an air ingress.The explosion projectiles damaged an ammonia storage tank with consequent ammonia release (domino effect) Three people were…

At approximately 8:45 a.m. an employee was troubleshooting a thermal chamber, evaluating a Hydrogen on Demand (HOD) unit. The chamber was reported inoperative that morning. Two units were being…

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…

Hydrogen gas leaking from a tanker truck came in contact with a spark, causing an explosion at a semiconductor plant.

In an electricity production plant, a hydrogen leak from a tank explodes forming a fireball. The explosion was in a turbine of one of the electric units (800MW each). The Unit is damaged.

An explosion occurred in a pipe system carrying hydrogen and methane at an ammonia plant. No major injuries have been reported.

The accident occurred when a welder belong to a sub-contractor company was working on tank roof. The zeolite crystallization tank was being cleaned out with approx. 20% sulfuric acid. It was not…

There was a massive explosion at one of the generator-turbine units of a coal-based power station. Undetected hydrogen leak from the generator was identified as a major trigger.According to the news…

The event started when a gasket in a water pump was blown out. The water pump was situated inside a 100 m long, 10 m wide, and 7 m high building. The pump was feeding water to a vessel containing…

The explosion, accompanied by abundant black smoke, occurred at 8:50. An ignited leak of hydrogen (H2) in the ammonia production unit (NH3) had spread to the pressure circuit carrying synthesis gas (…

Rockville, Maryland, on June 9th, the control panel door for the 32 hydrogen dryer blew off due to a small hydrogen explosion. No one was injured in the event, which occurred in the non-nuclear side…

The release and fire occurred during what appeared to be a normal operation in a reactor section of a Residue Hydrotreater Unit, when an eight-inch pipe connected to a heat exchanger failed at the…

The explosion followed a hydrogen leak on a unit conditioning hydrogen.The leak was caused by the mechanical rupture of the membrane of a pressure release device which was part of a pressure…

A process operator was working in the collaring/ decollaring area of a mechanical workshop. An electric cross cut saw was used to make two diagonal cuts in the collar of a hydrogen cylinder before…

An explosion occurred whole two employees inside a facility were working with aluminum paste. Crews believed the blast was caused by hydrogen that had built up in the plant.

Several explosions occurred in one of the catalytic reforming units of the refinery, followed by a fire in the same unit. The fire derived from the explosions lasted for almost one day. The…

The accident occurred in the Reactor 6 used to carry out the hydrogenation of a pharmaceutical intermediate.The operation of the plant was organized in two shifts. Since the hydrogenation at Reactor…