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AbstractAbstract
[en] In the revised Severe Accident Research Program plan recently issued by the US Nuclear Regulatory Commission, it was noted that the initial phases of hypothetical reactor accidents have received the greatest attention. Much less research has focused on late phase melt progression. This report describes a model that treats some of the physical processes that can occur in a severely degraded reactor core. Of interest here are melt progression, oxidation, and gas phase natural convection. A number of sensitivity analyses are also discussed to help identify the most important parameters in the model. 106 refs., 33 figs., 1 tab
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Source
Feb 1990; 87 p; SAND--88-3476; CONTRACT AC04-76DP00789; NTIS, PC A05/MF A01 - GPO as TI90007218; OSTI; INIS
Record Type
Report
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ACCIDENTS, BWR TYPE REACTORS, C CODES, COMPUTERIZED SIMULATION, CORIUM, FISSION PRODUCTS, FUEL ELEMENTS, HEAT TRANSFER, HYDRAULICS, HYDROGEN, LMFBR TYPE REACTORS, LOSS OF COOLANT, M CODES, MATHEMATICAL MODELS, MELTDOWN, OXIDATION, PHASE TRANSFORMATIONS, PWR TYPE REACTORS, RADIATION HAZARDS, REACTOR COOLING SYSTEMS, REACTOR CORES, REACTOR SAFETY, RESEARCH PROGRAMS, S CODES, THERMODYNAMICS, URANIUM OXIDES, VAPORS, ZIRCONIUM
ACTINIDE COMPOUNDS, BREEDER REACTORS, CHALCOGENIDES, CHEMICAL REACTIONS, COMPUTER CODES, COOLING SYSTEMS, ELEMENTS, ENERGY TRANSFER, ENRICHED URANIUM REACTORS, EPITHERMAL REACTORS, FAST REACTORS, FBR TYPE REACTORS, FLUIDS, GASES, HAZARDS, HEALTH HAZARDS, ISOTOPES, LIQUID METAL COOLED REACTORS, MATERIALS, METALS, NONMETALS, OXIDES, OXYGEN COMPOUNDS, POWER REACTORS, RADIOACTIVE MATERIALS, REACTOR ACCIDENTS, REACTOR COMPONENTS, REACTORS, SAFETY, SIMULATION, THERMAL REACTORS, TRANSITION ELEMENTS, URANIUM COMPOUNDS, WATER COOLED REACTORS, WATER MODERATED REACTORS
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