Around 60 people gathered in a small theatre at a shopping centre to watch an array of scientific experiments, including a "small hydrogen explosion."Several children suffered second degree burns with children aged between five and 13 rushed to the nearest hospital.It remains unclear which chemicals were used in the experiments, with some reports claiming both hydrogen and alcohol-based chemicals were used.However a statement released by the Russian investigative committee examining the case said the science show had used "liquid nitrogen".The "flammable" substance was then ignited by the gas

The hydrogen possible leaked and ignited from a tank which was inside a car parked in a hospital underground parking garage. The tank was supposed to be used for launching a weather balloon. Two people were injured and are being treated in the Emergency Department. The explosion damaged at least three other cars in the parking garage.The cause is under investigation by Detroit police and fire. The parking garage does not appear to have sustained any structural damage.

The safety cabinet with compressed hydrogen was located in a laboratory and used to supply hydrogen to an experimental facility. The safety cabinet was equipped with exhaust extraction. Due to a leak, technical assistance had been requested from the fire department. The head of laboratory shut off the electrical supply to the laboratory. Measurements showed that there was no potentially explosive atmosphere in the laboratory room.

The explosion and fire happened in a diesel hydro-treatment unit used to desulfurise raw diesel be means of hydrogen.The facility was expected to begin full commercial operations later in 2020.

The event occurred at manhole cover of a of a pilot plant reactor where hydrogenation had been performed in a hydrochloric aqueous solution. The reactor had been flushed three times with nitrogen (i.e. nitrogen injecting at 3.2 bars and then relieving). An employee opened the manhole cover of the reactor to take a sample of the reagent. . After opening it, a minor detonation occurred.According to the DECHEMA database, the investigations found out these following causes:1.

An explosion and fire occurred at a 3000-gallon (approx. 11400 l) reactor, part of the production process of linear alkyl benzene (LAB), Process materials released from the various vessels and piping fuelled a subsequent fire that took approximately 2 hours to extinguish.As reported by Ali Reza (Ali Reza et al., 2007, see References), before the explosion, the bottom of the reactor was plugged with approximately 180 gallons (approx. 800 l) of a sludge-like mixture of coarse aluminum powder, aluminum chloride and various hydrocarbons.

The incident occurred during the verification operation of a new high pressure hydrogen generator. The electrolysis cell burned down, the pipes of the oxygen circuit burst and the peripheral equipment were scattered all over the facilities. The liquid blown out from the broken pipes and the gas release valve, and glass fragments were scattered within a radius of ten meters. There was no injury. The analysis of the incident (Wada et al., ICHS 2007) assumed as probable initiating cause that titanium electrode in the electrolysis cell was exposed to oxygen and burned.

The incident occurred on a highway. The truck would have tried to avoid an obstacle fallen on the road. It so left the road, collided with the central guardrail and tipped over on the other side. The tractor caught fire, then a leak on one of the bottles containing hydrogen (approximately 20 tubes) ignited and the fire propagated.A security perimeter was set up by fire fighters / authorities. The road, as well as the parallel roads, was cut in both ways of traffic. A diversion was organized. It was necessary to let the hydrogen burn and extinguish by controlling the fire.

The incident occurred at the hydrogen coolant circuit, when purging the hydrogen with carbon dioxide and air, aiming at finding a leak. Following a preliminary investigation, the power plant company explained that hydrogen was still present when air was injected, creating the condition for the formation of an explosive mixture. According to the sources referred to news mentioned in the References, it appears during the leak search activity, workers deviated from the established procedure.

A hose of a hydrogen tanker parked in at a specialised company ruptured. The released hydrogen ignited and exploded, followed by a fire probably fed by the continuously leaking hydrogen. The local fire rescue team rushed to the scene after receiving the alarm call. The fire was quickly brought under control and extinguished. Firefighters continued to cool the tank to avoid further problems. There were no casualties at the scene. There were two hydrogen trailers parked at the accident site. The other truck was not affected.