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- W73769801 abstract "During a severe nuclear reactor accident, degradation of the core may result in debris accumulating in the lower head. Upon failure of the head, the melt may be ejected under pressure through the cavity and into the containment building. Under low system pressure conditions, understanding the mechanisms of debris dispersal is instrumental in assessing the response of the containment to pressurized melt ejection. Current analytical approaches rely on empirical correlations for debris entrainment criteria and very simple gas flow patterns in the cavity. The work reported here is directed toward performing scaled experiments that will develop a data base for refined scaling analyses. Subsequently, extrapolations from the analyses to reactor scale may be performed to provide insight for accident predictions. Mechanistic models for gas flow through the cavity and entrainment of the debris are also being developed from the results presented here. The objective of the test matrix is to vary key parameters to assess the effect on the physical processes of dispersal of the melt from the reactor cavity at low system pressures." @default.
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- W73769801 date "1988-01-01" @default.
- W73769801 modified "2023-09-24" @default.
- W73769801 title "Low-pressure debris dispersal from scaled reactor cavities" @default.
- W73769801 hasPublicationYear "1988" @default.
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