Although the ARIA report (see references) does not mention it, the unit affected was very probably the oil desulfurisation unit. The release occurred following the rupture of a pipe of 250 mm in…
Leakage of a mixture of hydrogen, nitrogen, citric, hydrofluoric and hydrogen sulfide occurs during ventilation shutdown on high temperature PVC furnaces. The accident follows an electrical outage…
A six-cylinder rack containing an argon / hydrogen mixture is dropped from a truck on a national highway, causing a gas leak.A security perimeter was set up. The services of the equipment took care…
Around 13:45, a hydrogen leak on a pipe occurred in a refinery. Cold cutting of a purge was underway on the equipment as part of a work stoppage. The worker, who detected the leak, stopped the air…
A leak occurred at a of a liquid withdrawal valve of a liquid hydrogen storage tank. The hydrogen escaped at the flange between the valve body and the upper part of the valve (flange with tongue and…
30 bottles with compressed hydrogen fell from a truck at a junction, because of speeding. The bottles started releasing hydrogen. Emergence team was called, and leak was stopped.
A hydrogen leak was reported at a chemical plant.
On February, 20, 1987, the Vogtle nuclear power plant reported a hydrogen leak inside the auxiliary building. This plant was recently licensed, had never been critical, and was in cold shutdown at…
The operator detected a leak of aerosol hydrocarbons (diesel, hydrogen and hydrogen sulfide) in the diesel desulfurisation unit, causing a release of hydrogen and hydrogen sulfide at the top of the…
An accident involving a truck hauling liquid hydrogen closed an interstate highway for two hours.
A liquid hydrogen leak occurs on one of the cylinders that a truck was carrying. After the leak was stopped, the vehicle was escorted by the fire brigade and taken to a laboratory for inspection.
In an ammonia production unit, a 350-bar leakage of synthesis gas (ammonia + hydrogen) occurred in the compressor room. The leak was the result of the failure of a weld on a line (2") at the outlet…
The incident occurred in the hydrogenation reactor and products cooling unit. The reactor operated under vacuum conditions and the cooling medium was water.Toxic, flammable and explosive substances (…
A hydrogen leak occurred on a flange located on a pipe coming from the hydrogen storage tank. The staff was confined and the Internal Operation Plan was launched.Helium was injected in the tank and…
During a patrol, an operator detects a hydrogen leak in a refinery on a footbridge 30 meters high. The origin of the leak is identified 4 days later on a pipe under insulation. The operator proceeds…
In a fertilizer manufacturing plant, during his inspection round, an operator detected a hydrogen leak at a flange of an exchanger located between the conversion and decarbonisation stages of the…
The right front side of a FCEV was hit by another car.
A 40,000-litre capacity tanker lorry carrying liquid hydrogen tipped over into a ditch on a curve in an intersection while travelling on a municipal road at the edge of town. The lorry had just left…
The vehicle was being driven in traffic at low speed when it was struck from behind by a full-size pickup which forced the fuel-cell vehicle forward into another pickup. No hydrogen was released and…
A truck carrying 300 cylinders of hydrogen ran off the road and overturned in a nearby field causing 1 casualty. The fire fighting were on site, the truck was lifted back in the right position
The truck overturned and lost vacuum insulation. The hydrogen boiled and vented, but there was no ignition. The potential for fire or explosion, however, led to precautions that did cause…
A minor fire broke out following a gas leak from hydrogen cylinders. A truck was returning to the base company after offloading hydrogen cylinders at a factory. The driver lost control and crashed…
This accident happened on the SS66 road and involved a trailer transporting compressed hydrogen cylinders. The 50 l cylinders were in packages of 16 cylinders each. Due to the breaking of fixing…
Explosion in an open road. 6 people suffered minor burns on faces or hands.
A rollover accident involving a tanker truck carrying 12,000 gallons of liquid hydrogen forced the evacuation of nearly 50 homes.
Ejection of rotor wedge material lead to vibration induced failure of components, including hydrogen seals. Serious fire resulted from hydrogen leakage, which subsequently lead to an oil fire.…
During the start-up of a propylene hydrogenation reactor, very high temperatures were generated in the catalyst bed. At the time, propylene and hydrogen were being fed to the reactor which contained…
A petroleum refinery experienced a catastrophic rupture of a heat exchanger in the catalytic reformer / naphtha hydrotreater unit (the NHT unit). The heat exchanger, catastrophically ruptured because…
Around 60 people gathered in a small theatre at a shopping centre to watch an array of scientific experiments, including a "small hydrogen explosion."Several children suffered second degree burns…
A severe fire in a hydrogen compressor building in a unifier unit of an oil sands refinery reportedly started in a 1,500 psi lube oil system. Fire fighting was difficult because of 40 degrees F…
