HIAD Nature Event - Release Type: Gas

The accident occurred in the Reactor 6 used to carry out the hydrogenation of a pharmaceutical intermediate.The operation of the plant was organized in two shifts. Since the hydrogenation at Reactor…

A catastrophic failure of the low pressure turbine followed by fire and flooding severely damaged the generator. The main turbine automatically tripped due to an erroneous mechanical over speed…

Workers were connecting a compressed hydrogen cylinder, when a release of hydrogen occurred within a safety-box for flammable gases. During the emergency response procedures, the explosive atmosphere…

The failure of a high pressure hydrogen-based synthetic gas feed line to the ammonia converter produced a sudden explosion followed by a severe fire. One of the operators was fatally injured. The…

The cracking happened in an ammonia plant, started up in 1970, on the pipe leading hot synthesis gas from the synthesis convertor to the first heat exchanger. This pipe was affected by six cracks and…

The event occurred during the disconnection of the hydrogen compressor for maintenance.Two deaths and three injured workers were the consequences. The cause(s) of the event are unknown.

Fire in chemical plant (Seveso-classified)The fire developed at the top of the flare stack of a during a violent thunderstorm.The flare stack is used to discharge hydrogen produced by the…

A ruptured hydrogen line caught fire at a commercial gas plant.

The explosion occurred at a hydrogen fuel plant mainly serving hydrogen forklift fleets. The explosion damaged several nearby homes and could be felt nearly 10 miles away.Police and firefighters…

Two successive fires broke out in an interval of few minutes in four cells in the electrolysis room of a chlorine production plant. The technicians brought the fire under control using the fire-…

Chlorine was released in the liquefaction unit of a chlorine electrolysis plant, due to the rupture of a pipe. During the re-start phase of an electrolysis workshop in a chemical plant, chlorine (…

The fire started in a electrolysis cell. The fire originated from a hydrogen leak in the hydrogen over pressure control system of the cell and an unidentified ignition source. The ARIA report (sew…

A fire occurred in a hydrogen and catalyst loading lines of heavy oil unit. The most likely cause was that a hydrogen purge pipeline failure allowing hydrogen to escape. This mixed with hot oil…

At a nuclear power plant, a fire occurred in the station's hydrogen storage facility while the plant was operating at 100% power. The fire was reported to the control room by a non-licensed operator…

A technical failure in the High-Pressure turbine blades caused high vibrations in lubricating oil pipes. Some pipes broke off and the oil leak caught fire from hot surfaces. Also the generator's…

In a refinery, a fire occurred at a new reactor for the vacuum distillate hydro-desulfurization unit. Internal gas (hydrogen, hydrocarbon, etc.) blew from a flange of upper piping in the reactor. It…

A small quantity of hydrogen gas leaked out of a pipe and caught fire. The danger of an explosion was averted by the safety crew who put out the fire and switched the gas flow to an alternative line.

Weld failure caused a fire involving a hydrogen pipe at a fertilizer ammonia plant. Source of ignition was autoignition.

Fire broke out along a transition corridor combining several underground pipelines transporting hazardous substances, including hydrogen, kerosene and ethylene oxide. The fire was brought under…

Excavation work was performed nearby a buried pipeline of gaseous hydrogen. The excavation machine hit the pipeline causing an under-expanded jet fire. No injuries. The excavation machine was burnt…