Water boiling on the corium melt surface under VVER severe accident conditions

• Experimental results are presented on the interaction of corium melt with water supplied on its surface. The tests were conducted in the `Rasplav-2' experimental facility. Corium melt was generated by induction melting in the cold crucible. The following data were obtained: heat transfer at boiling water-melt surface interaction, gas and aerosol release, post-interaction solidified corium structure. The corium melt charge had the following composition, mass%: 60% UO2+x-16% ZRO2-15% Fe2O3-6% Cr2O3-3% Ni2O3. The melt surface temperature ranged within 1920-1970 K.

Nyckelord

Aerosols

Boiling liquids

Chromium compounds

Heat transfer

Iron oxides

Molten materials

Nickel compounds

Solidification

Uranium dioxide

Water

Zirconia

Corium

Core meltdown

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