HIAD Classification of the Physical Effects: Hydrogen Release And Ignition

A hydrogen leak followed by an explosion occurred at an elbow of a pipeline cooling system and the separator of the distillation unit. The explosion destroyed the unit and injured two workers.

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…

Hydrogen explosion on NPO "Azot" in Rovno, Ukraine.

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…

Explosion at Shreveport refinery involving hydrogen injured a worker

An over-dosage of natron lye in a silicon dust suspension container raised the ph-value up to 11, producing large amounts of hydrogen in a short time. The hydrogen caused an extreme pressure increase…

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 event occurred at manhole cover of a of a pilot plant reactor where hydrogenation had been performed in a hydrochloric aqueous solution. The reactor had been flushed three times with nitrogen (i.…

The event occurred in the continuous casting of hot metallic melt of the plant.Cooling water leaked through a crack in the cooling water inlet pipe of a secondary cooling line and directly into the…

The explosion occurred when an operator opened a valve on the hydrogen network of the plant. The operator suffered from a burn in the forearm and two other employees are shocked by the pressure wave…

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…

The event took place at the metal sheet pre-heating oven. This oven uses a mixture of hydrogen and nitrogen to form a reducing atmosphere. The zinc crucibles draining operations was completed and…

The explosion occurred when a spark from welding equipment ignited flammable vapours from a 415,000-gallon (ca. 1.5 million of litres) sulfuric acid storage tank at the refinery.The investigation…

In a laboratory, tests with hydrogen as aerospace rocket propellants were carried out. One of the experiments consisted in the generation of a vertical jet (turbulent regime) to determine the sound…

The incident occurred in the building containing the residues of production. The alarm was given by an employee who heard detonations coming from the building. A few seconds later, the building's…

The explosion occurred while maintenance personnel were grinding a high-pressure injection (HPI) pipe, which had been recently cut at approximately 18 inches from the nozzle connecting the HPI pipe…

In a chemical plant (SEVESO), corrosion on the water side of a cooling exchanger caused water to enter the sulfuric acid and attack the steel in the tank. This reaction produced hydrogen that…

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 incident took place in compression room of methanol synthesis manufactory of ZAO Azot in Severodonetsk. As a result of pipeline destruction mixture of pressurized gases (mostly hydrogen) filled…