HIAD Sources Categories: ICHEME
A road tanker carrying 125,000 cubic feet of liquid hydrogen caught fire when the tankers vent stack malfunctioned.The area within a one-mile radius was evacuated. No one was injured in the…
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 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…
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…
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…
Failure of a strainer allowed sand from brine filters to get into mercury cells in a chlorine plant. It appears that the sand obstructed flow and caused excessive hydrogen generation. An explosion…
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 charge pump on a hydro-desulfuriser unit tripped. The charge flow control valve then opened wide on low flow. The high pressure hydrogen supply to the unit flowed backwards through a faulty non…
A leak and fire occurred in a hydrogen compression section of a hydrocracker.
An operator noted a loose tube sheet flange stud on a high temperature, high pressure heat exchanger in an hydrodealkylation unit.The stud was found to be cracked through. Analysis proved to be made…
The incident occurred during a temporary shutdown of the distillate hydro-treatement unit. The crude oil distillation units main column overhead product was pumped to a gasoline storage tank via the…
A vertical cylindrical fired heater was used on the charge to a hydrodesulfurisation reactor. The flow was two phase at the heater inlet (hydrogen and hydrocarbon). The distribution of flow to the…
The event affected the hydrocracker unit. A sudden release into a cracker compressor flare header destroyed a safety relief valve and damaged a sight glass on a liquid collection pot. As a…
A leak of a flammable mixture of hydrocarbons and hydrogen from a ruptured pipeline caused an explosion and fire, killing one person and injuring forty six. Investigations into the incident found…
During the start-up of a propylene hydrogenation reactor, very high temperatures were generated in the catalyst bed. At the time, propylene and hydrogen were being fed to the reactor which contained…
A short circuit developed in the wiring of a fire eye system on one of two 600 psig boilers serving a refinery. This triggered a rapid sequence of events that resulted in a one week shutdown of much…
A vertical cylindrical hydrodesulfurisation reactor charge heater was being started up with hydrogen flow only rather than hydrogen plus oil as in normal operation. As a result of the low heat load…