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HIAD Quality Indicator: 3


the explosion occurred inside the lower hydrogenation tower of a hydrogen peroxide unit, damaging the distribution tray inside the tower. 4 were killed and 2 injured, the direct economic loss was 488…
A hydrogen explosion caused burns contaminated with radioactive dust to a member of the plant's maintenance crew. Three other workers escaped injury.The accident occurred in the basement of the…
At a soaking facility of an industrial plant in the metallurgy sector, the pipeline between a supply tank and a feed pump became clogged and the autoclave only received sporadic feed. Problems had…
An explosion occurred on a tank truck whilst unloading hydrogen into a storage tank. The explosion occurred near the discharge valve of the truck injuring two people and starting a fire at the point…
An explosion occurred in a water skim tank associated with an ethyl benzene dehydrogenation reactor system. The reaction mixture from the reactors containing styrene, ethylbenzene, benzene, toluene…
An explosion occurred caused by a leak of hydrogen from a reactor on a fertilizer plant. The blast hurled the head of a hydrogen gas converter 150m and sent it crashing through reinforced-concrete…
The event occurred in an atmospheric pressure tank storing effluents. The plant was in the production phase. The head of the overfill prevention valve located at the top of the tank was thrown a…
In a chemical plant, a violent explosion took place during the batch production of chlobenzorex from an aqueous solution of sodium borohydride contained in a feed tank on a movable truck. The…
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 hydrogen plant exploded, throwing debris for tens of metres and badly damaging the plant. The two workers in the plant at the time were not seriously injured. The plant reportedly had a capacity of…
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…
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 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 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…
The event occurred during welding works which ignited accidentally released hydrogen. The plant had been partially shut down for repairing works to a pipe affected by internal cracks. The repairing…
Explosion in an electrolyzer producing chlorine The explosion occurred after the opening of an auxiliary circuit-breaker. The opening of the auxiliary circuit breaker trigger the shut down of the…
The explosion occurred in an incinerator for non-industrial wastes, during inspection and repair works. These were due to a large quantity of aluminum which produced a solid lump of ash. The…
Works at the power grid of a hydrogen production unit is at the origin of the sequence of the following events:1.Fusion of a safe fuse triggering the closure of a valve on the manifold of a pistons…
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