HIAD Causes: System Design Error
Fire in bulk hydrogen storage compound. Pressure gauge shut off valve spindle blown out (could be completely unscrewed and removed). The subsequent leak ignited by unknown source. No injuries…
The event occurred in the steam condensing line of the residual heat removal system the nuclear reactor. Radiolysis generated hydrogen and oxygen which then accumulated in high concentration in the…
A hydrogen explosion had ruptured a pipe in the core spray system at the Brunsbttel BWR in Germany. Although the control room instrumentation had at the time indicated a leak of radioactive steam,…
A gas mixture (25% nitrogen, 73% of hydrogen, 2% methane) leaked, due to the ejection of the check valve from its connection with the inlet pipe. A large amount of the gas mixed with air and ignited…
Explosion accident while testing liquid water turbo-pump - A fire occurred during testing of a turbine pump which is a part of a rocket engine. On the day of the incident, seven seconds after the rpm…
At a rubber factory, an explosion occurred inside a lubricant container filled with 18 tonnes of tri-(nonylphenyl) phosphite (TNPP or TNPA). This tank was typically stirred and maintained at 45C.…
The incident affected at an indirect oil desulfurization unit, and originated at a piping at the outlet of a heat exchanger. The exchanger was located in the furthermost downstream of the reactor.…
A fire and explosion occurred at a catalytic reformer unit. The fire centred between the reactors and fired heaters of the reformer and resulted in extensive damage to the unit.The explosion rocked…
At a soaking facility of an industrial plant in the metallurgy sector, the pipeline between a supply tank and a feed pump became clogged and the autoclave only received sporadic feed. Problems had…
on a Sunday morning, in a ceramic factory, a leak on a 100 m tank containing 370 kg of hydrogen caused an explosion. The generated pressure wave causes significant damage to exterior buildings (…
Hydrogen ignition during the (illegal) filling of a balloon.Two men had decided to fill in a weather balloon with hydrogen in a storeroom located in the basement of a block of flats. Their idea was…
This event occurred when a hydrogen-carrying trailer was supplying hydrogen to a chemical plant. Instead of filling the hydrogen stationary storage, large quantities of hydrogen were transferred…
An explosion occurred in a water skim tank associated with an ethyl benzene dehydrogenation reactor system. The reaction mixture from the reactors containing styrene, ethylbenzene, benzene, toluene…
The incident took place in a calcium powdered wire manufactory of "Chepetsk Mechanical Plant". Some amount of water find it's way in a container where the mixing of different powders took place. As a…
The accident occurred during the first phase of the batch synthesis of tricarbonyl compound (methylcyclopentadienyl) manganese (TMCM), while the reaction mixture in the reactor consisted of more than…
A lightning strike caused a voltage drop on the power supply of a chlorine-alkali plant using the mercury process.The emergency electrical system was activated, though restoring the external supply…
Employees were trying to open the manhole cover (600 mm diameter) of a hydrofluoric acid tank with a grinder, when an explosion occurred. The explosion was probably caused by the presence of hydrogen…
The vent occurred in the ammonia production unit. A minor leak had been detected in a flange on the piping of the ammonia synthesis loop (operating at 250 bar). The company called a specialized…
A hydrogen plant exploded, throwing debris for tens of metres and badly damaging the plant. The two workers in the plant at the time were not seriously injured. The plant reportedly had a capacity of…
An explosion and fire occurred at a hydrogen production plant serving the hydrocracker and the diesel hydroteater of a nearby refineryNo injuries were reported among the employees.According to the…