HIAD Sources Categories: RISCAD

Electric spark ignited hydrogen in a captive advertising balloon.

An explosion occurred in a hydrocracking reactor fitted with TOC which is a automatic cut-off system for raw oil and hydrogen supply. On the day of the incident, the operation was stopped with TOC…

Explosion accident while testing liquid water turbo-pump - A fire occurred during testing of a turbine pump which is a part of a rocket engine. On the day of the incident, seven seconds after the rpm…

Explosion due to hydrogen gas leakage from an abraded pipe: A hole was made in a pipeline used for catalyst regeneration at an aromatics plant, ejecting catalysts and hydrogen gas which ignited.…

Explosion due to injection of hydrogen into a furnace containing residual air.

Explosion of nitrobenzene fluoride while mixing with hydrogen gas: Fluoronitrobenzene exploded when mixing it with compressed hydrogen gas.

Flask explosion due to hydrogen in the science class.

An explosion occurred during a reduction process for the manufacture of para-phenetidine (PPD). The explosion took place due to the convergence of several events. Workers did not firmly close a valve…

"A chlorine suction pump failed on a sodium hydroxide electrolysis unit.Recovery operations were carried out including nitrogen purging of hydrogen piping and air purging of chlorine piping before…

Hydrogen gas leaking from drain pipes in a hydrodesulfurization plant: There was a hydrodesulfurisation plant which had a recycle hydrogen compressor fitted with a suction rectifier. Hydrogen gas…

Fire due to hydrogen gas leakage from a cadre falling in transportation.

When waste alkali solution was taken out of dumper trucks into a waste liquid storage tank, a reaction occurred in the tank. As a result, the solution in the tank foamed over it, and reached an…

Fire accident at heat exchanger for hydrogenation desulfurizer of gasoline caused by expansion of a screw.

Fire of vinyl chloride-made-air release pipe while CVD equipment in operation - With a vacuum pump for air discharging being operated, silane and hydrogen gases were mistakenly allowed to flow in…

In a refinery, a fire occurred at a new reactor for the vacuum distillate hydro-desulfurization unit. Internal gas (hydrogen, hydrocarbon, etc.) blew from a flange of upper piping in the reactor. It…

In a high pressure gas plant, hydrogen gas leaked through a flange on a non return valve located on a hydrogen inlet of a reactor. The leaking gas ignited.

A fire occurred at an oil factory during maintenance work. On the day of the incident, a distillation unit was shutdown for a steam air tightness test. Cooling equipment on the distillation unit was…

A triangle flask exploded during a science-class experiment where diluted hydrochloric acid was made to react with zinc to generate hydrogen, at a junior high school. Injures were caused by glass…

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

Ignition of hydrogen produced by washing slag in a tank for chlorosulfonic acid.