HIAD Causes: Human Factors

Explosion in a fine organic chemical plant (Seveso classified )The event occurred during the cleaning of a reactor. At the completion of a batch manufacturing of a soft reducing agent, an operator…

This accident took place different phases and in two different units of a refinery: It consists first in a non-hydrogen accident, followed by a hydrogen-related accident.Before the hydrogen-related…

An autowash machine was being used to clean aluminum trays with burnt on product. The autowash in normal situations cleans steel trays not aluminum. The cleaning fluid contained Na OH. On contact…

The explosion was caused by the ignition of hydrogen during reaction with sodium metal. The Chemistry Department routinely dried solvents using metallic sodium. This leaves an excess of sodium metal…

The event occurred during welding works which ignited accidentally released hydrogen. The plant had been partially shut down for repairing works to a pipe affected by internal cracks. The repairing…

The explosion occurred in a copper electroplating plant test furnace when starting the operation of copper plating. EVENT DETAILS A tinned copper pipe had been placed inside another copper pipe and…

Explosion in an electrolyzer producing chlorine The explosion occurred after the opening of an auxiliary circuit-breaker. The opening of the auxiliary circuit breaker trigger the shut down of the…

Works at the power grid of a hydrogen production unit is at the origin of the sequence of the following events:1.Fusion of a safe fuse triggering the closure of a valve on the manifold of a pistons…

Five barrels of aluminum dust that had been removed from an outdoor dust collector were sealed and stored in the plant adjacent to electrical panels. One of them had somehow been contaminated with…

The vent occurred at the hydrogen manufacturing unit: a pipe of this unit burst, followed by an explosion. The fire was extinguished in about 15 minutes. One employee nearby had a consequence from a…

Explosion at chemical plant in Akita Prefecture involving hydrogen killed a worker

An explosion occurred in the Heat Treatment Shop of this site. The explosion was centered in the electrical control panel of the High Velocity Oxy Fuel (HVOF) thermal spraying equipment. The violent…

An explosion occurred in an electrostatic precipitator whilst it was being accessed for maintenance. The explosion caused an inspection hatch cover, which had been unbolted, to be blown off and…

On a cold morning, the gasoil hydro-treatement unit was being brought back on line after being out of service to repair a governor problem on the recycle gas compressor. Several upset trips had…

The Microbiological Anaerobic Chamber of approximately 2 m3 capacity was containing an explosive mixture of hydrogen and air. A fire followed the explosion, but was rapidly extinguished by staff…

A hydrogen leak occurred on the a coolant pipe of an electrical generator located in the turbine building, at 200 m from the reactor. Because of the welding works ongoing at that moment on the pipe…

A tank "filled with low-pressure hydrogen" exploded at a food manufacturing plant, killing three workers. The accident occurred when the workers were welding inside the tank after clearing hydrogen…

The 10 m3 hydrogen storage tank at the hydrogen station belonging to the oxygen plant exploded during production operation. The hydrogen storage tank was installed and used by the plant in 1995, with…

The incident occurred at a tank of the chlorine electrolyzer of a water treatment plantThe plant products were sodium hypochlorite as a disinfectant for water treatments. The production process used…

The event occurred at a company producing machines for water treatment for the food industry.A pressurized tank exploded killing two workers and shaking windows and ceilings at neighbouring companies…