HIAD Classification of the Physical Effects: Hydrogen Release And Ignition

A hot oil line (8-inch) in the hydro-desulfurisation (HDS) unit failed due to fatigue cracking. Hot oil at 50 bar and 343C sprayed across the roadway into the hydrogen units where ignition occurred.…

The incident occurred at a power generator during the shutdown of one reactor unit. Hydrogen leaked from the cooling circuit of the generator due to damaged sealing. The hydrogen ignited. The fire…

On February 3, 1994, a control room operator at Surry Power Station, Unit 1, observed pressure spikes on the pressurizer level instruments. At the same time, a loud rumbling sound was heard in the…

[NOTE: the attribution to hydrogen formation as cause of the explosion is 'probable 'but not fully demonstrated].Two explosions in two different sprinkler systems occurred, wit the same assumed cause…

A hydrogen fuel tank release caused a fire at an AC Transit fuel station, prompting authorities to, as a precaution, evacuate several businesses and a high school and to close a number of…

A hydrogen gas leak at an oil refinery ignited

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

A hydrogen jet fire occurred on a 25m3 tank while transferring a catalyst to a buffer tank. The constabulary created an area of safety around the plant while the staff extinguishes the fire by…

A leak of hydrogen gas, followed by an explosion, occurred when an engine was loaded with air, oxygen, and hydrogen, and then started for a preliminary ramjet engine combustion test. The engine was…

Due to unsealing of flange connection in a heat exchanger, hydrogen leaked and ignited. At 20 m height, under pressure of 0,25 MPa.

A hydrogen leakage caught fire in the hydrogen compressor area of the continuous reforming unit. The reforming unit and the hydrocracking unit were immediately stopped. The hydrogen flow was cut off…

Hydrogen leaked from the hydrogen compressor and ignited. The compressor was part of the desulfurization unit of a refinery. It had just been delivered and was under commissioning testing. The fire…

In a plant manufacturing chlorate products, a hydrogen leak occurred via the water drainage outlet onto the factory floor. Pressure in the hydrogen line increased because the hydrogen pipes were…

Leaking hydrogen gas ignited causing a fire at a power plant.

While making preparation for operation of a compressor supplying hydrogen to a heavy oil desulfurization unit, an operator got injured as the checking cover of a crank room came off, emitting a hot…

A fire was sparked by a hydrogen leak at a Goodrich plant around 9:50 a.m. Friday, safety officials said. "Apparently the hydrogen caused a fire when it hit the air," said Chief Alex Rodriguez of the…

A leaking hydrogen line exploded at an oil refinery.

In a hydrodesulfurization unit of a refinery, a leak on a hydrogen line ignited and damaged the surrounding lines, including one with acid gas. The weather conditions (fog and very little wind)…

In a metal production company, a leak occurred on valve of a hydrogen line. A new valve was ordered. Almost one month later workers arrived on site to replace the valve. After one hour they heard…

Following the first flight of the Montgolfier brothers, the first severe accident with hydrogen on a Montgolfier-balloon occurred in 1785, when trying to cross the Channel from France to England. Two…