HIAD Nature of the Consequences: Leak No Ignition

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…

Leak of hydrogen at a refinery which may have been caused by a faulty compressor.

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.

A factory was evacuated after a tank began leaking hydrogen. No injuries were reported

Compressed hydrogen was released from a storage system due to the rupture of a Bourdon-type pressure gauge.

The rupture disk installed on a liquid hydrogen tank failed, in a plant producing organic chemicals, during the weekly shut down. The hydrogen ignited at the exit of the exhaust chimney. The fire…

A liquid hydrogen leak occurs in a steel plant on a 42000 l tank of liquid hydrogen. A sealing coupling was installed to stop the leak.

A hydrogen feed line ruptured without igniting at an oil refinery.

A leak of 700 l of gaseous hydrogen was detected around on a connection of a rack of cylinders on a trailer truck, in aircraft plant (classified Seveso, lower tier).

Gas leakage from a hydrogen cylinders pallet in transit.

The release occurred after the collision between a truck containing liquid hydrogen and a truck containing manganese dioxide on a highway.Due to the release, the traffic was interrupted for 4 hours…