HIAD Facility - Storage Medium: Gas

An explosion and fire occurred at a hydrogen production plant serving the hydrocracker and the diesel hydroteater of a nearby refineryNo injuries were reported among the employees.According to the…

A mixture of hydrocarbon and hydrogen leaks from hydrogenation unit of a refinery. The cloud explodes. The leak was caused due to corrosion of a carbon steel pipe at a bend, which was one eighth…

Gaseous hydrogen leaked from an oil pump part of the filling and conditioning system in a industrial gases production plant. The released hydrogen ignited and exploded. The cause has been a human…

Explosion within a blast furnace occurred at the plant manufacturing iron. The event occurred at one of the blast furnace of the plant, which exploded. The explosion was so powerful that the entire…

The accident happened in a low pressure methanol plant, commissioned in summer 1971 . A 6 in. pipe, below the methanol synthesis gas compressor inter-stage relief valve, failed releasing hydrogen-…

An explosion occurred involving a Microbiological Anaerobic Chamber of approximately 2 m3 capacity, containing an explosive mixture of hydrogen and air. A fire followed the explosion, but was rapidly…

This entry reports only the role of hydrogen in this nuclear accident. For a short description of the initial causes and the incident evolution, see at field pre-event summary and for a much more…

In a pharmaceutical company classified Seveso upper-tier establishment, a deflagration occurs at the end of a hydrogenation reaction involving a chemical raw material, acetic acid, water and a…

A large explosion happened in the contractor amenities area. The explosion was thought to be caused by an explosive mixture of air and hydrogen which existed in the pipes. The force of the explosions…

In a polyethylene manufacturing plant, the explosion of a flammable cloud (isobutane, ethylene, hexane and hydrogen) escaped from a reactor during maintenance caused 23 fatalities and 314 injured…

The reduction stage of the powder production process of a chemical plant had been shut down, and the buffer tank of the line had been drained on the preceding day. After the shutdown, the batch to be…

A gas release occurred in the building for the recirculation of processes gas. The gas was a mixture of hydrogen and nitrogen. It occurred at the outlet valve, during works aiming to replace it. This…

Explosion in a fine organic chemical plant (Seveso classified )The event occurred during the cleaning of a reactor. At the completion of a batch manufacturing of a soft reducing agent, an operator…

This accident took place different phases and in two different units of a refinery: It consists first in a non-hydrogen accident, followed by a hydrogen-related accident.Before the hydrogen-related…

Workers were performing demolition on a disused furnace. While removing a 10 inch valve from a pipe used to supply coke gas fuel to the furnace, flammable liquid was unexpectedly released and ignited…

A deflagration occurred inside the tank at the start of grinding operations. The tank had contained sulfuric acid. All preparatory procedures had been properly carried out: neutralisation of…

The incident occurred in a facility chrome-plating metals. At the time of the event, a metal roller was being chrome-plated. A short circuit occurred due to a defective contacting (contact rails) on…

An autowash machine was being used to clean aluminum trays with burnt on product. The autowash in normal situations cleans steel trays not aluminum. The cleaning fluid contained Na OH. On contact…

Explosion in generator area, thought to be hydrogen leak as a result of radial lead seal failure. Extensive plant damage.

A pinhole leak in the discharge hose of a portable tank containing sodium hydride reacted with water, and released hydrogen that ignited and exploded at a waste management plant.