Explosion within a blast furnace occurred at the plant manufacturing iron. The event occurred at one of the blast furnace of the plant, which exploded. The explosion was so powerful that the entire furnace, which with its contents weighed approximately 5000 tones, raised some 0.75 m from its supporting structures, leading to the explosive release of hot material: the released substances, 200 tones in total, consisted in solids, semi-solids, (molten metal) and gases. The event caused three fatalities, twelve severely injured workers and many more with minor injuries.

The explosion occurred in a plant for the production of butter. It was due to the rupture of a hydrogen tank, during a sterilization process at high temperature (so-called UHT treatment). Two fatalities and 12 injuries. The explosion blew away the roof of the unit and severely damaged the other installation.

This entry reports only the role of hydrogen in this nuclear accident. For a short description of the initial causes and the incident evolution, see at field pre-event summary and for a much more detailed and structured information see references. After almost 2 hours from the start of the incident (a loss of pressurized water supply to the reactor core), the top of the reactor core was only in contact with steam and exposed to the intense heat.