HIAD Event Initiating System: Hydrogen System Initiating Event

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.

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…

It was a small incident in a heat-electric power plant. The alarm was registered at 11:26 and the fire was extinguished at 12:03. The incident took place during tests using the reserve power…

A small hydrogen leak occurred during routine maintenance on an oil refinery unit not in operation.

Static electricity ignited hydrogen in a rising advertising balloon.

The event occurred just after that start-up steam was introduced into the reformer furnace inlet. At this moment an very high pressure and a single loud bang was reported by the operations personnel…

Syngas explosion at a university laboratoryThe university lab affected was investigating generation of hydrogen and methane from biomass (wooden chips). The experimental furnace was a concrete…

There was a small leak of syngas (a mixture mainly consisting of hydrogen and carbon monoxide) resulting in a localized fire at a bolted flange joint on the outlet carbon steel pipework of the High…

The leak occurred at the ammonia reactor after a technical shutdown of 4 days. When the production was resumed and the syngas compressor restarted 14 hours later, a jet-fire occurred. The Internal…

Following a trip caused by the safeguarding of an ammonia production line, the syngas released into the atmosphere and ignited.

The event occurred while re-starting the ammonia production unit after a technical stop, a synthesis gas (50% hydrogen, 17% ammonia, methane and nitrogen) leak ignited on a flange located just after…

A 24" pipe carrying synthesis gas (Hydrogen = 43.5%, Nitrogen = 14.08%, Methane = 0.2%, Carbon Dioxide = 12.3%, Water = 29.3% by volume) ruptured. About 60 kg of hydrogen contained in the gas…

Fire caused by leakage from tank. Gaseous hydrogen release in generator caused by turbine vibrations

3 workers were injured in the hydrogen explosion

The release of a blast furnace gas occurred at a section of pipework, due to the rupture of valve seal. The gas did not ignite and the fire service attended as a precaution. The gas was both…

A vertical cylindrical hydrodesulfurisation reactor charge heater was being started up with hydrogen flow only rather than hydrogen plus oil as in normal operation. As a result of the low heat load…

Two hydrogen explosions occurred at a boiling water reactor (BWR). The first explosion occurred at 9:30 a.m. and was mostly confined to the off-gas system. Damage was relatively minor.The second…