HIAD Facility - Storage Medium: Gas

An aerosol of hydrogen, hydrogen chloride and sulfuric acid is released in a plant producing chlorine via electrolysis.The exhaust pipe on the water circuit of the electrolyzer was blinded due to the…

The release took place in a metal cold rolling workshop.The hydrogen leaked from a cylinder of 15 m3, which was part of a storage system of 250 m3.Half of the workshop and the surrounding roads were…

A hydrogen release occurred in a storage area of a nuclear power plant.. The storage consisted of three trailers made of 14 compressed gas cylinders each. The cylinders, mounted horizontally, had a…

During the start-up operation (phase) of a cryogenic unit, a separator exploded, releasing ethane, ethylene, methane and hydrogen. The bursting of a tank was caused by a 1600 mm long incipient crack…

A hydrogen safety sensor went into alarm at a hydrogen demonstration facility. The early morning temperature was near freezing and there was a trace of precipitation on exposed surfaces. Upon further…

The event was initiated by the burst of a rupture disc on a reactor during a hydrogenation process. The hydrogenation reaction occurs under pressure in a tank containing 3,000 l of a mixture of…

The accident occurred on one of the heat exchangers of the hydro-desulfurisation unit. The role of the exchanger , located between the charge pumps and the furnace, is to heat the charge using the…

A release of contents of a pressure vessel occurred when a longitudinal weld tore open. The vessel had been shut down and had just been put into use again when the incident occurred.The gas mixture…

The leak occurred on the inlet pipe (P=21 bar, T=320C) of the diesel desulfurization reactor of a refinery. Hydrogen and diesel fuel were released in the gas phase. The hydrocarbons contaminates…

A high pressure reactor ruptured during a catalyst activation operation. A gaseous stream of hydrogen and light hydrocarbons was released and spontaneously ignited. The unit was immediately…

Although the ARIA report (see references) does not mention it, the unit affected was very probably the oil desulfurisation unit. The release occurred following the rupture of a pipe of 250 mm in…

Leakage of a mixture of hydrogen, nitrogen, citric, hydrofluoric and hydrogen sulfide occurs during ventilation shutdown on high temperature PVC furnaces. The accident follows an electrical outage…

A six-cylinder rack containing an argon / hydrogen mixture is dropped from a truck on a national highway, causing a gas leak.A security perimeter was set up. The services of the equipment took care…

Around 13:45, a hydrogen leak on a pipe occurred in a refinery. Cold cutting of a purge was underway on the equipment as part of a work stoppage. The worker, who detected the leak, stopped the air…

A hydrogen leak was reported at a chemical plant.

In an ammonia production unit, a 350-bar leakage of synthesis gas (ammonia + hydrogen) occurred in the compressor room. The leak was the result of the failure of a weld on a line (2") at the outlet…

The incident occurred in the hydrogenation reactor and products cooling unit. The reactor operated under vacuum conditions and the cooling medium was water.Toxic, flammable and explosive substances (…

A hydrogen leak occurred on a flange located on a pipe coming from the hydrogen storage tank. The staff was confined and the Internal Operation Plan was launched.Helium was injected in the tank and…

During a patrol, an operator detects a hydrogen leak in a refinery on a footbridge 30 meters high. The origin of the leak is identified 4 days later on a pipe under insulation. The operator proceeds…

In a fertilizer manufacturing plant, during his inspection round, an operator detected a hydrogen leak at a flange of an exchanger located between the conversion and decarbonisation stages of the…