Behavior of gaseous fission products in oxide fuel elements (LWBR Development Program)
Technical Report
·
OSTI ID:7098785
Theories of the mechanics of gas release from oxide fuels during fission, and the effect on fuel elements are discussed. Equations are developed to explain migration of fission-gas bubbles to the fuel center line, and to grain boundaries. Concepts are amplified to account for migration of pores by surface diffusion, and by vapor transport, under driving forces of thermal gradients, strain energy gradients, stressed locations, and moving grain boundaries. Diagrams are presented to indicate expected extent of columnar grain growth for UO/sub 2/, ThO/sub 2/, and ZrO/sub 2/, as a function of center line temperature in a cylindrical fuel element. (NSA 21: 5017)
- Research Organization:
- Bettis Atomic Power Lab., Pittsburgh, PA (USA)
- DOE Contract Number:
- AT(11-1)-GEN-14
- OSTI ID:
- 7098785
- Report Number(s):
- WAPD-TM-570
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220300* -- Nuclear Reactor Technology-- Fuel Elements
ACTINIDE COMPOUNDS
BREEDER REACTORS
CHALCOGENIDES
CRYSTAL STRUCTURE
FISSION PRODUCTS
FLUIDS
FUEL ELEMENTS
GASES
GRAIN BOUNDARIES
ISOTOPES
LWBR TYPE REACTORS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
RADIOACTIVE MATERIALS
REACTOR COMPONENTS
REACTORS
THERMAL REACTORS
THORIUM COMPOUNDS
THORIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM OXIDES
WATER COOLED REACTORS
WATER MODERATED REACTORS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES
220300* -- Nuclear Reactor Technology-- Fuel Elements
ACTINIDE COMPOUNDS
BREEDER REACTORS
CHALCOGENIDES
CRYSTAL STRUCTURE
FISSION PRODUCTS
FLUIDS
FUEL ELEMENTS
GASES
GRAIN BOUNDARIES
ISOTOPES
LWBR TYPE REACTORS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
RADIOACTIVE MATERIALS
REACTOR COMPONENTS
REACTORS
THERMAL REACTORS
THORIUM COMPOUNDS
THORIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM OXIDES
WATER COOLED REACTORS
WATER MODERATED REACTORS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES