HIAD Specific Application Supply Chain Stage: Hydrogen As Process Gas

Following a catalyst regeneration a fire occurred on a hydrocracking unit during unit pressure testing prior to start-up. The fire resulted from ignition of high - pressure hydrogen-rich gas that…

The leak ignited at the seal located between the bottom and the body of a heat exchanger of a desulfurization unit of a refinery. The fire is alimented by the leaking fuel under pressure for about…

The fire, 1 m high fire occurred in a pipe at the inlet of the hydrodesulfurisation unit of a refinery. The fire was caused by the leak of the pipe content, hydrogen and diesel fuel. According to the…

A fire, fuelled by a mixture of gasoline and hydrogen, occurred on a heat exchanger located at 15 m height in a gasoline processing unit of a refinery. The operator triggered the emergency plan. Site…

Spillage of hydrogen and heavy gas oil at heavy oil hydrogenation desulfurization device due to insufficient heat treatment after welding valve:

In a petrochemical plant, a gas mixture at 270 bar made of 75% hydrogen (H2) and 25% methane (CH4) leaked through the bottom valve of a dryer of a resin production unit. After detection of the leak,…

An explosion and fire occurred at a reciprocating recycle hydrogen compressor during commissioning of a new Diesel hydrotreatement Unit. It happened during the reactor pre-sulphidisation step, when…

A shift supervisor received severe burns and later died after a flexible hose used to transfer hydrogen to the catalytic reformer was over-pressurised and caught fire.Hydrogen is supplied from three…

The accident occurred at a distillate dewaxing Unit (MDDW) of the refinery, during the operation of regeneration of the catalyst. To perform this operation, both temperature and pressure have to be…

A hydrogen leak followed by an explosion occurred at an elbow of a pipeline cooling system and the separator of the distillation unit. The explosion destroyed the unit and injured two workers.

An explosion at a linear alkylbenzene (LAB) plant caused substantial damage to the facility and injured five workers. Production remains down, and the company has sent a letter to customers declaring…

Explosion at Shreveport refinery involving hydrogen injured a worker

The event occurred at manhole cover of a of a pilot plant reactor where hydrogenation had been performed in a hydrochloric aqueous solution. The reactor had been flushed three times with nitrogen (i.…

The event took place at the metal sheet pre-heating oven. This oven uses a mixture of hydrogen and nitrogen to form a reducing atmosphere. The zinc crucibles draining operations was completed and…

The explosion occurred when a spark from welding equipment ignited flammable vapours from a 415,000-gallon (ca. 1.5 million of litres) sulfuric acid storage tank at the refinery.The investigation…

The incident took place in compression room of methanol synthesis manufactory of ZAO Azot in Severodonetsk. As a result of pipeline destruction mixture of pressurized gases (mostly hydrogen) filled…

A 2-inch line carrying hydrogen gas at approximately 2,800 psi (approximately 19.3 MPa) failed at a weld, resulting in a high pressure hydrogen fire. The fire resulted in flame impingement on the…

The fire occurred after a hydrogen released from a venting valve opened for inspection. The hydrogen was at 300 bar and 300C centigrade. The hydrogen ignited probably spontaneously and killed 4…

A hydrogen leak occurred on the hydrogen line of a hydro-desulfurization unit, followed by ignition . The failure was located on a supply manifold of the unit at a support beam. The unit was shut…

The hydrogen jet fire a pipe have been detected by a night operator which was making rounds in a solvent production unit. The unit's emergency response team managed the fire in minutes. Operators…