HIAD Specific Application Supply Chain Stage: Hydrogen As Process Gas

A fire occurred on a flange of a hydrodesulfurisation unit during start-up operations. A failure of this flange caused of the leak.

In a petrochemical plant, visual inspection detects fumes under the heat insulation of a heat exchanger operating under hydrogen pressure. The first intervention team was mobilized and the unit…

a hydrogen recycle compressor shut down unexpectedly, resulting in flaring activity with visible smoke.

The broke out at a hydrogen compressor of the reforming unit of the refinery. Following the safety procedures, the emergency stop of the unit was activated and the unit was decompressed using a…

The methanation reactor vessel was found to be deformed and had a 3-4 inch rupture at a position corresponding to the top of the catalyst bed. It is though that the incident was caused by ethylene…

A hydrogen leak occurred on a sintering furnace in a manufactory of uranium pellets. The event happened during the restart phase after a period of maintenance. The hydrogen ignited at the location…

A weld on a 1 inch diameter instrument tapping from a Octafiner reactor overhead line fractured, resulting in a small but intense fire, lasting about 50 minutes until the unit was nitrogen purged.The…

A pipe failed, probably due to material failure, and the plant was automatically put in hot stand-by (feed and energy supply automatically cut out). The plant was gradually cooled down. After about…

Around 4 a.m., a major leak occurred at the outlet of the diesel hydrodesulfurization furnace in a refinery. The goal of this unit is to lower the sulfur content of diesel fuels produced in other…

In a petrochemical plant, a fire occurred on the methanation unit (95% H2 + 5% CO -> CH4 + H2 + H2O) of a steam cracker. A seal break on a flange of the circuit caused of the accident. No…

A fire occurred on a valve of a hydrodesulfurisation unit in a refinery. A cable gland was modified. Steaming wreaths are permanently installed.

A fire broke out affecting the heavy fuel purification plant of the refinery.The incident could have originated by the failure of one of the following plant components:- pipes leading to the pressure…

Furnace tube leak caused excessive heat on H2 tube causing rupture

The gas leak containing hydrogen (H2) and hydrogen sulfide (H2S) occurred at the upper isolation valve located at a high-pressure separator (300 bar) of an oil production unit in a refinery.…

Three workers were asphyxiated when argon and hydrogen gas leaked from pipes they were installing on an aromatics plant being built on a cracking complex.

A fire started in a refinery's gas oil desulfurization unit. The purpose of this unit is to separate sulfur from hydrocarbons and to do so, the latter are raised to 340C in the presence of hydrogen…

During the isomerization of wax in a lube oil plant, the high pressure reactor ruptured, releasing its contents. The released gas ignited and a fire developed in the plant area where operators and…

At around 9:15 a.m., during a routine inspection, a flame was observed at the bottom flange of a reactor in a refinery. A few moments later, sensors near the leak detected a rise in temperature.The…

During a work tour on a refinery, an employee noticed a fire at the level of a flange at the inlet of the grille of an exchanger, located at the outlet of a reactor of the catalytic reforming unit.…

A diesel and gas leak (H2, H2S, CH4) occurred in a hydrodesulfurization unit (2,200 t/d). The leak location was on one of the boiler valves of the stabilization column. The released mixture (390 C /…