A pipe rupture occurred in a steam condensing line of a residual heat removal system at the Hamaoka Nuclear Power Station Unit-1 (Hamaoka-1) during operation at rated power. The reactor was manually…
The nuclear plant was a boiling-water reactor with an output of 0.54 million kW. The component affected was a steam piping (inside diameter: 15 cm; thickness: 1.1 cm) of a heat exchanger used for…
The fire broke out on a worm ("vis sans fin") supplying a conveyor of aluminum. The ignition of the powder on the ground was caused by the flame cutting operation on the worm shell which generated…
The utility production facilities (electricity, water, air, and steam) at a refinery were isolated from the power grid and switched to two turbine generators in anticipation of a storm. At 9:50 p.m…
A cryogenic hydrogen laboratory had a power outage. The cryogenic hydrogen storage was no longer being cooled, therefore temperatures and pressures within the storage system started rising. There…
The vessel affected by the incident was a gas storage used for the desulfurisation process. The desulfurization gas had high hydrogen content. The vessels had cracks in the upper transverse fillet…
A hydrogen and fuel cells bus was hit by a private car, which was driving out from a parking place. Body damage on the rear, right side.
A private car did not observe the right of way and hit a hydrogen and fuel cells bus on the right side.
Private car not observing the right of way hit a hydrogen bus on the right side
In a chemical plant , a process gas leak (4% ammonia and 88% hydrogen) occurs during a purge operation. The cloud of gas ignites and explodes. An employee is killed.
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 occurred at the flanges on the outlet of a desulfurization reactor, which was working under about 300 degrees C The flanges and bolts were cooled down by a large amount of rainwater which…
The fire developed on one of two naphtha crackers The rupture of the reactor made that the hydrogen, petroleum products and the pyrophoric catalyst came outside the reactor. The mixture immediately…
The event occurred at the hydrogenation unit of a pharamceutical company. 145 kg of hydrogen were released the atmosphere at the gas circulation pump, due to a maintenance error . A…
Hydrogen leak from a valve, with delayed ignition and consequent engulfing fire.The bonnet of a 2 inch valve on hydrogen quench line of a lube oil hydrotreater began to leak.The operative conditions…
A tractor - semitrailer with horizontally mounted cylinders filled with compressed hydrogen struck a northbound pickup truck that had veered in front of it.The tractor-semitrailer then went out of…
While de-plugging a cooling circuit, a blockage suddenly released, causing a heavy movement of a flexible hose connected to the system. The flexible hose hit several small pipes and one employee…
Minor leak in the break-away coupling for 35MPa dispenser of a refuelling station for buses.The leak developed in the break-away coupling during a controlled test refuel. The test was attended by…
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…
Hydrogen leak occurred during a delivery of hydrogen at an automotive supplier. Rescue deployed a curtain of water and evacuated 82 employees from several companies within a radius of 50 m. The…
A leak occurred in a vehicle carrying 218 cylinders of hydrogen. The contents of 28 cylinders, 90 m of hydrogen, escaped. A security perimeter was set up with stop of the road and rail traffic.
A leak occurs on a hydrogen gas transport at a flange of 9 cylinders of 80 m. The producer of these cylinders decides to let it leak. No consequences to report.
hydrogen gas released from vent stack following failure of relief valve in pressure relief system on bulk hydrogen installation, no ignition and no injuries.
A leak occurred on a line connecting the hot separator to the cold separator of a refinery diesel desulfurization. The alert was given by the activation of the fixed H2S detector. The 30 bar pressure…
A hydrogen and fuel cells bus experienced a hydrogen detection alarm in a city centre. This triggered the evacuation of the immediate surroundings and the towing of the vehicle to the maintenance…
Leak of hydrogen at a refinery which may have been caused by a faulty compressor.
A truck-trailer carrying compressed hydrogen cylinders stopped on an autobahn and reported a hydrogen leaking from the cylinders. The highway was immediately closed in both directions. When the fire…
A sudden failure occurs on a hydrogen line of a refinery desulfurization unit. The equipment is located between a hydrogen compressor and its overpressure protection valve. It is isolated…
During maintenance work on a gas pipeline carrying hydrogen , a worker hears a leak at about at a bridge. The operator measures an concentration of 3% of the low flammability limit at few…
Fire due to hydrogen gas leakage.
