HIAD Causes: System Design Error

An explosion and fire occurred at a reciprocating recycle hydrogen compressor during commissioning of a new Diesel hydrotreatement Unit. It happened during the reactor pre-sulphidisation step, when…

An explosion occurred in hydrogen compressor, due to rupture of 4 inch suction pipeline to the compressor. "Hydrogen...exploded and continued to burn until it was extinguished".3 fatalities.

[NOTE: the sources are not completely clear in describing the system involved in this incident ; the following is the most plausible option according to HIAD validator]The explosion happened in two…

A shift supervisor received severe burns and later died after a flexible hose used to transfer hydrogen to the catalytic reformer was over-pressurised and caught fire.Hydrogen is supplied from three…

The accident occurred at a distillate dewaxing Unit (MDDW) of the refinery, during the operation of regeneration of the catalyst. To perform this operation, both temperature and pressure have to be…

The event occurred in a support building at a test stand complex. The explosion destroyed two support buildings and severely damaged a large amount of equipment. No one was injured.Gaseous hydrogen…

An explosion at a linear alkylbenzene (LAB) plant caused substantial damage to the facility and injured five workers. Production remains down, and the company has sent a letter to customers declaring…

The hydrogen buffer tanks that exploded were part of an experimental facility experimenting generation of renewable hydrogen from a water electrolyzer coupled to solar panels.The three hydrogen tanks…

An open backed truck was delivering various industrial gases to sites. At the site of the explosion a rack of argon gas bottles was being delivered to a laboratory in the building adjacent to the…

Release from pressure bottle followed by ignition and perhaps fast deflagration. Nine people affected, including the operator of the bottle.

The accident occurred in a testing site for space equipment. The high pressure combustion took place in a liquid hydrogen tank (H2) under a high pressure and in presence of 12 m (700 kg) of liquid H2…

Failure of a strainer allowed sand from brine filters to get into mercury cells in a chlorine plant. It appears that the sand obstructed flow and caused excessive hydrogen generation. An explosion…

The fire broke out in the acid etching tank of the ferric chloride manufacturing unit of a SEVESO-classified chemical plant. In this tank, the attack reaction of the iron metal with hydrochloric acid…

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…

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…

[NOTE: the attribution to hydrogen formation as cause of the explosion is 'probable 'but not fully demonstrated].Two explosions in two different sprinkler systems occurred, wit the same assumed cause…

A hydrogen jet fire occurred on a 25m3 tank while transferring a catalyst to a buffer tank. The constabulary created an area of safety around the plant while the staff extinguishes the fire by…

A leak of hydrogen gas, followed by an explosion, occurred when an engine was loaded with air, oxygen, and hydrogen, and then started for a preliminary ramjet engine combustion test. The engine was…

Following the first flight of the Montgolfier brothers, the first severe accident with hydrogen on a Montgolfier-balloon occurred in 1785, when trying to cross the Channel from France to England. Two…

An explosion occurred on a unit producing hydrogen for the nearby refinery.The following fire was extinguished in 10 minutes by the public service fire brigade. Two workers were lightly injured.