The incident consisted of a leakage of potassium hydroxide solution (KOH) from an alkaline electrolyzer in a renewable hydrogen production plant. One webpage news reported that smoke formation triggered the fire alarm system. According to the manufacturer, the equipment shut down and automatically went into safety mode in accordance with the integrated safety system.Nobody was injured in the event and there was no damage on the environment.

the commercial vehicle was traveling when the two-person crew noticed what appeared to be smoke emitting from the tanker trailer. The crew called 911 and safely pulled to the side of the road Fire brigade, law enforcement and Department of Transportation personnel then escorted the vehicle to a safe location near a University main campus. The hazard response team entered in contact with the transportation company and left the tanker depressurizing and off-gassing till it was safe for it to further travel.

The incident occurred at a fuel cells manufacturing plant. The tanker was preparing to transfer liquid hydrogen to the company hydrogen bulk storage tank. During backing, it impacted an industrial building, causing a hole in the tank, with consequent leak and ignition. When the City fire brigade arrived on scene, the hydrogen gas was still escaping from the leak feeding the fire. They let the fire burn out and kept dousing the tanker till Saturday to reduce the temperature and to minimise possible the risk of explosion.

A detonation was heard and the hydrogen supply of the site was automatically shut down by the safety devices.The fire was caused by a hydrogen leak and led to the formation of a fireball at the end of a hose at the conditioning station. A plant employee had just disconnected the hose sued for the filling of a semi-trailer. He did so to be able to change a non-return valve which was vibrating noisily. The hydrogen supply had been stopped, the automatic system had been switched to manual mode and the hose had been drained and disconnected.

The event occurred in the continuous casting of hot metallic melt of the plant.Cooling water leaked through a crack in the cooling water inlet pipe of a secondary cooling line and directly into the hot melt (temperature > 1500 C). This resulted in the formation of hydrogen which ignited on the hot surface. The pipe in question had been in operation for a prolonged period. The material analyses of the component showed that the rupture occurred as a consequence of fatigue. The annual visual inspection had revealed no signs of imminent failure.

The leak occurred on a 44 m vehicle of liquid hydrogen during a delivery to the unloading station of a steel plant. The truck drivers had connected the tank container to the fixed storage managed by a subcontractor, carried out a nitrogen sweep of the hose before cooling it, and were pressurizing the H2 before unloading when they saw a white cloud. The drivers closed the bottom valve of the container and the upstream and downstream valves of the heater before evacuating the area and sounding the alarm.

A liquid hydrogen leak occurs on one of the cylinders that a truck was carrying. After the leak was stopped, the vehicle was escorted by the fire brigade and taken to a laboratory for inspection.

A fire occurred on a plant. The fire resulted from an escape of liquid hydrogen from a joint between an isolating block valve and a relief valve on one of the separation column preheater. The relief valve had been under repair and was being brought back onto line when the incident happened.An investigation team was appointed. The first task was to confirm that it was safe to resume operation in the section of the plant.

A road tanker was being loaded with liquid hydrogen from a 15,000 gallon storage tank, when fire broke out after 1 inch rupture disk failed, ignition source was a loose connection in down stream piping. The ignition was not immediate after rupture.

A pressure relief device (frangible burst disk) on one of a hydrogen delivery tube trailer`s 26 tubes failed prematurely and released hydrogen while filling a hydrogen storage tank at a government facility.