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HIAD Specific Application Supply Chain Stage: Unintended Hydrogen Production - Chemical Reaction


At least one person was injured in an explosion at a theatre building. The investigation concluded that the accident has been caused by hydrogen entering the sprinkler room from the sprinkler piping…
During the shipments of incinerator bottom ash, flammable gasses including hydrogen generated and caused two explosions. The first explosion was in the forecastle store and the second in the cargo…
Hydrogen leak due to a fault with non-process related battery equipment.After reporting the hydrogen leak, fire crews have been called to a gas terminal. The leak was due to a fault with non-process…
The event occurred during the decommissioning of a nuclear power plant. It involved a tank containing 100 kg of residual sodium from the decommissioned experimental nuclear reactor which was using…
At about 3:15 p.m. on Dec. 3 2003, personnel in the Expended Core Facility at the Naval Reactors Facility heard a loud, unexpected noise. Upon investigation, personnel found an irradiated material…
Heavy rains (more than 600 mm in 1 day) had flood a factory manufacturing calcium core electrical conductors. The power supply was cut off. The water came into contact with the calcium stored in 150…
The event occurred in a silicon hydride (SiH) emulsion production process inside an enclosed production building. The process generated a flammable gas cloud gas ignited, which later ignited causing…
The event occurred at the factory producing multilayer circuit boards by a multistep dip operation. An employee inadvertently mixed 55 gal of 50 percent hydrogen peroxide into 110 gal of 30 percent…
The incident occurred in an electrostatic filtration unit. When flushing with air during the start-up phase of a sulphonation plant, an explosion occurred in the upper partof the electrostatic…
A tank receives, after a negative reactivity test with the bottom supernatant of the tank, 20 m of methyl hydro-dichloro-silane, then 24 m of a mixture of oil and tar (negative reactivity test) and…
An employee was preparing a batch of glycol stearate emulsifier in a vessel. Upon completion of product, the quality control lab reported that the pH was too high and the product needed to be…
The incident occurred in a pharmaceutical plant. A disk ruptured on the vent of a reactor and the reaction mixture was projected onto a frontage of the synthesis workshop. It caused a spill of 700 l…
(WARNING, UNCLEAR IF H2 WAS INVOLVED)The explosion occurred in a chemical reactor tank of a plant (SEVESO low level) manufacturing products for medical imaging. According to the investigation, the…
damage of shipping containers of a ship, reaction of phosphor pentoxide with wine leads to phosphoric acid and hydrogen
This near miss occurred at metal smelting unit of a foundry. At 9:45 a.m., due to a power outage, the cooling pumps of two furnaces containing nickel and chromium stopped. One of the two furnaces…
Explosion, with consequent fire, in chemicals production plantThe accident occurred in the organo-metallic compound production unit, on a transport container for aluminum alkyls, which exploded…
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,…
At a rubber factory, an explosion occurred inside a lubricant container filled with 18 tonnes of tri-(nonylphenyl) phosphite (TNPP or TNPA). This tank was typically stirred and maintained at 45C.…
An explosion and fire occurred at a chemical plant applying silicone coatings. The blast occurred when some polymethyl hydrogen siloxane was accidentally fed into a reactor, together with the correct…
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