HIAD Sources Categories: ARIA

The fire started 3 hours after being shut down. The unit was shut down and the fire extinguished.The oven contained only gaseous products and mainly hydrogen.

The event occurred while starting a new production cycle. The production supervisor issued specific instruction on a new production cycle to a technician. The technician did not follow them in the…

The leak occurred on a process pipe of a pressurized at 17 bar and located 3.5 m from the ground The gaseous mixture composed of hydrogen, methane and hydrogen sulfide (density: 0.6) was released to…

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…

Following a loss of power the failure of a backup battery causes an alarm in a hydrogen storage facility. Consequently, a valve on the purge circuit and 30 m3 of hydrogen is released to the…

An explosion occurred in a electrolyzer cell, the vent blew up and caused a pipe rupture on the low pressure chlorine pipeline. The event occurred when two operators were improving the tightness of…

The explosion occurred while starting up for the first time a hydrogenation reactor.The reactor was being commissioned, by performing tightness tests under hydrogen atmosphere at very high pressure.…

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…

The explosion occurred in a plant for the production of butter. It was due to the rupture of a hydrogen tank, during a sterilization process at high temperature (so-called UHT treatment). Two…

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…

A frontal road collision between a truck transporting pressurised hydrogen gas and a carBoth vehicles were projected into the fields, on each side of the road. No leakage of hydrogen gas was observed…

A fire started on the brakes of a truck carrying hydrogen. Due to the risk of extension of the fire to the hydrogen, the fire brigade install an emergency area until the fire is extinguished.There…

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…

The truck was carrying cylinders of nitrogen (N2), oxygen (O2), hydrogen (H2) and acetylene on a national road. It struck the right protection, then the concrete-reinforced central division, and…

A deflagration occurred during shutdown of a reactor used for ammonia synthesis. It was followed by a jet fire. The hydrogen leak was probably due first to the lower seals, followed by another leak…

In a chlorine electrolysis facility, a mixture of oxygen and hydrogen in one of the electrolyzer cells a short-circuit ignited causing a deflagration. The cover of the cell was a thin plastic film…

The explosion occurred while restarting the ammonia reactor. Synthetic gas (70% H2) was released at the flange of the relief valve of the turbo-compressor. The explosion was followed by a jet fire.…

An explosion followed by a fire occurs in a refinery, originated by a hydrogen release at the hydrogen compressor.

A gaseous mixture of hydrogen (H2), methane (CH4) and ethane (CH3-CH3) at 54 bar was cooled in a heat exchanger upstream of a hydrogen purification system. The accident started with a double…