HIAD Facility - Operational Condition: Normal

A trained plant operator was blending water, sand, anhydrite, lime, cement, PFA and powdered aluminum in a mixing chamber to produce material for making building blocks. All powders are pre-weighed…

Iron powder from non-conducting polypropylene IBC was added to EDTA solution at 60 C in reactor. Hydrogen given off, ignited by static.

The incident took place in a calcium powdered wire manufactory of "Chepetsk Mechanical Plant". Some amount of water find it's way in a container where the mixing of different powders took place. As a…

An explosion followed by fire occurred in the hydrogen filling unit of chemical plant for the production of dyes and pigments.

The vent occurred in the ammonia production unit. A minor leak had been detected in a flange on the piping of the ammonia synthesis loop (operating at 250 bar). The company called a specialized…

A fire occurred in a pipe trench containing about 50 pipelines.The pipelines were carrying a wide variety of hydrocarbons from crude oil to residuals. In addition, there were lines with steam, fuel…

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…

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…

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…

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…

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…

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.

waste water tank Hydrogen that causes the incident has been produced either during waste water treatment or by a reaction between sodium borohydride and the waste water filling the tank.

The explosion was caused by the ignition of hydrogen during reaction with sodium metal. The Chemistry Department routinely dried solvents using metallic sodium. This leaves an excess of sodium metal…

A mechanical failure occurred in a gasification reactor, which caused a violent (abrupt, sudden) depressurization of the reactor. The consequences were the projection of tiles of the refractory…

An explosion occurred in the Heat Treatment Shop of this site. The explosion was centered in the electrical control panel of the High Velocity Oxy Fuel (HVOF) thermal spraying equipment. The violent…

An explosion occurred in the glass components of a reactor at a pharmaceutical plant during a batch process. At the time of the accident, the reactor was being hydrogenated. As a result of the…