HIAD Causes: System Design Error

Two hydrogen explosions occurred at a boiling water reactor (BWR). The first explosion occurred at 9:30 a.m. and was mostly confined to the off-gas system. Damage was relatively minor.The second…

Two hydrogen explosions occurred at a boiling water reactor (BWR). The first explosion occurred at 9:30 a.m. and was mostly confined to the off-gas system. Damage was relatively minor.The second…

Employee #2 was using a torch to cut a U-bolt on the bypass piping next to a brine surge tank that potentially contained hydrogen gas in a vapour space in the upper portion of the tank. His job was…

Fire following vapour explosion at a plant making titanium sponge due to design errors: A vapour explosion, followed by a fire, occurred at a drier in a plant making titanium sponge. When titanium…

Release from a welding of a hydrogen transmission pipeline At 12:45 pm the operation control centre (OCC) recognised that a customer flow and pressure dropped significantly. At 13:28 the OCC made the…