HIAD Classification of the Physical Effects: Hydrogen Release And Ignition

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…

Piping breakage at atomic power plant- Steam piping (inside diameter: 15 cm; thickness: 1.1 cm) of a heat exchanger for removing residual heat from a reactor was broken during the test of a high…

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 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.

The accident occurred during the maintenance of a sulfuric acid storage tank in an industry for the fertilizers production. The maintenance works consisted in cutting operations (to remove some…

Hydrogen gas leaking from drain pipes in a hydrodesulfurization plant: There was a hydrodesulfurisation plant which had a recycle hydrogen compressor fitted with a suction rectifier. Hydrogen gas…

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…

During repairs of a heat exchanger in a benzene plant, a mixed gas (methane and hydrogen) contained in the cold box attached to the exchanger leaked and caught fire from a welding spark. The…

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

A fire in a leaking hydrogen unit at a 220,000-barrel oil sands plant temporarily cut production nearly 80 percent.

A fire in a metallurgical plant (classified Seveso)The fire initiated in a acid treatment reactor of a workshop handling cementation of indium . Under normal conditions, the reaction of the process…

Fire due to hydrogen gas leakage from a cadre falling in transportation.

Leaking hydrogen ignited a fire that burned several hours at an oil refinery.

An operator had just replaced the ignition port cover on a hydrochloric acid plant burner. Normal start-up was continued by closing the drain valve in the product run off line and opening the…

The fire started as a result of an explosion in the process section of a refinery. An open structure of steelwork protected with reinforced concrete housed the usual furnaces, reactors, heat…

Fire and explosion in a chemicals plantThe process unit affected by the incident was a two-step production, consisting of i) hydrogenation of phenyl acetyl carbinol with benzyl amine in a isopropyl…

The explosion and fire happened in a diesel hydro-treatment unit used to desulfurise raw diesel be means of hydrogen.The facility was expected to begin full commercial operations later in 2020.

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…

Unit tripped on-load due to serious fire between alternator and number 12 bearing. Fire extinguished by fire brigade. No injuries. Serious site damage was sustained to in CT chamber and alternator…