HIAD Event Initiating System: Hydrogen System Initiating Event

A pressure relief device (frangible burst disk) on one of a hydrogen delivery tube trailer`s 26 tubes failed prematurely and released hydrogen while filling a hydrogen storage tank at a government…

An isomerization unit of a refinery was affected. The release was caused by the mechanical failure of one of the two compressors working in parallel at a pressure of 20 bars, conveying the gas…

A jet fire occurred on the ammonia production unit, caused by a leak on a hydrogen pipe. No victims.

The fire took place during maintenance works in one out of the three gas extractors of the coke process line. Main cause was displacement of a flange which allowed the entrance of flammable mixture…

The laboratory works with soil bacteria that cannot survive in the presence of oxygen. As a result, research work is conducted inside a plastic chamber in which the chemical constituents in the air…

A leak and fire occurred in a hydrogen compression section of a hydrocracker.

A mixture of mainly carbon monoxide and hydrogen was released from a pipeline transferring process gases in a not further specified unit of a chemical plant, generating a flammable mixture which…

This near miss occurred at a depot site with 20 fuel cell buses are operated by a local bus company. A hissing sound was heard coming from a hydrogen tank at the refuelling facility, and the local…

A hydrogen leakage occurred in the ammonia workshop of a plant manufacturing nitrogen products and fertilizer (classified SEVESO high threshold). It was detected by an operator in charge of safety…

At about 9:50 a.m., a lightning strike ignited hydrogen exiting a stack in a chemical factory. This hydrogen, produced by the chlorine electrolysis cells, is conveyed to the stack when the…

The whole content of the rail tanker, that is 42,000 l (about 2600 kg) of liquid hydrogen, was entirely lost over a period of seven hours via the venting line of a tank. The accident occurred at a…

The tanker truck was carrying nearly 13,000 gallons of liquid hydrogen. it hit the base of a light pole in the parking lot of a local grocery store as the driver was attempting to turn around.…

The leak occurred on a 44 m vehicle of liquid hydrogen during a delivery to the unloading station of a steel plant. The truck drivers had connected the tank container to the fixed storage managed by…

A 9000 gal (34 m3) LH2 storage tank exploded during repair of the vent stack. Few days before the explosion, the tank had been filled with LH2, but later on the hydrogen released and ignited at the…

A hydrogen explosion happened at a chemical plant in Cheshire, UK where 18 tons of hydrogen gas went up. The firefighters were on the scene tackling the fire quickly and efficiently.

The non-destructive analyses performed in a refinery revealed material degradation of the steel components. The opening of the equipment confirmed the diagnostic : blisters were visible on metal…

During a filling at a hydrogen refuelling station, the station was shut down due to a gas detection. The leak was extremely small and difficult to locate but the gas was directed upwards towards the…

In 1987, well diggers had drilled a well for water, but had given up on one dry borehole at a depth of 108 meters. According to the source reported in the References, wind was coming out of the hole…

An operator noted a loose tube sheet flange stud on a high temperature, high pressure heat exchanger in an hydrodealkylation unit.The stud was found to be cracked through. Analysis proved to be made…

A chemical mobile intervention unit intervened in the faculty to neutralize in an envelope sealed an experimental device likely to release hydrogen. The faculty was evacuated during the intervention.