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HIAD Event Initiating System: Hydrogen System Initiating Event


An explosion and fire occurred on a reformer at a fertiliser plant. Source of ignition was autoignition or electric motor.
An explosion occurred in a hydrocracking reactor fitted with TOC which is a automatic cut-off system for raw oil and hydrogen supply. On the day of the incident, the operation was stopped with TOC…
The event occurred at an ethylene production plant. The plant was shutdown at the time as the supply of compressed air to the gauges had inadvertently been switched off. This failure of the air…
A case under negligent act causing life danger was booked against the absconding balloon seller, Panic gripped the locality, bomb disposal squads, sniffer dogs and clues teams were rushed to the spot…
SUMMARYThe explosion occurred in a catalyst regenerator of the catalytic cracking unit in a fluidized bed during a technical shutdown. A few seconds later, a second explosion is perceived, it is the…
An explosion occurred at a chlorine production plant during the restart of the installation. An hydraulic syphon had probably been blocked by fire extinguishing products following a previous fire on…
The naphtha and hydrogen gas leaked out from the gasoline reformer at the Southwest Petroleum as the relief-valve was operated after its repair.Although the source (Asian database ADRC) does not…
In a residual-oil hydrotreatment unit (also called residual oil hydrogenation) plant, a hydrogenation unit caught fire with a huge bang, followed by a fireball in the form of a mushroom cloud. Black…
Employees #1 - #3 were machinists that were in the process of trouble shooting a compressor which had hydrogen in the lines. No actual work was in process. They were only listening for obvious noises…
Two employees were working on a electric furnace under hydrogen atmosphere that had jammed. The furnace exploded. The employees sustained flash burns to their faces and were taken to the hospital,…
An explosion of unknown cause occurred at a hydrogen manufacturing plant. The explosion occurred on the second floor of the building, used by employees as a cafeteria and offices. The company where…
The explosion occurred at the hydrogen producing unit of a refinery.A solution of potassium carbonate was being drawn off from an absorption tower to a temporary storage tank for a turnaround…
On September 1, 1992, an explosion in this facility occurred due to an accidental release of hydrogen at the Institute of Energy Conversion, University of Delaware, US. Hydrogen gas was used in…
Fire in bulk hydrogen storage compound. Pressure gauge shut off valve spindle blown out (could be completely unscrewed and removed). The subsequent leak ignited by unknown source. No injuries…
A contained explosion in a hydrogen tank occurred at the thermal generation plant
Employee #1, a maintenance worker, was killed by a hydrogen blast while working inside a batch hydrogenation unit.
Hydrogen gas explosion blew the lid off a heavy container at a heat treatment and brazing plant, crushing one workers hand.
The day before the incident, the outlet pipe connected to methanation reactor started leaking gas, which contains hydrogen. The leak was temporarily eliminated by a pressurised plug. On the day of…
The event occurred in the steam condensing line of the residual heat removal system the nuclear reactor. Radiolysis generated hydrogen and oxygen which then accumulated in high concentration in the…
A hydrogen explosion had ruptured a pipe in the core spray system at the Brunsbttel BWR in Germany. Although the control room instrumentation had at the time indicated a leak of radioactive steam,…
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