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SGMP process for high-density UO/sub 2/- and ThO/sub 2/-based fuels

Conference · · Trans. Am. Nucl. Soc.; (United States)
OSTI ID:5197819
; ;

The sol-gel microsphere pelletization (SGMP) process is a recent concept of oxide fuel pellet fabrication using sol-gel-derived microspheres for pellet pressing and sintering. The SGMP process is particularly attractive for remote refabrication of highly radiotoxic /sup 233/U- and plutonium-bearing oxide fuel pellets because of the dust-free and free-flowing nature of microspheres. However, the process has not been proven to be successful thus far. In the present study, the external gelation of thorium (EGT) and external gelation of uranium (EGU) processes of Kernforschungsanlage have been modified to produce microspheres suitable for making pellets of high density (greater than or equal to 95% TD) and desirable microstructure using pressing and sintering parameters similar to those used in the conventional powder route. The pellet compositions chosen are ThO/sub 2/-2% UO/sub 2/, ThO/sub 2/-5% CeO/sub 2/, UO/sub 2/-5% CeO/sub 2/, and UO/sub 2/-30% CeO/sub 2/. Cerium has been used for the simulation of plutonium.

OSTI ID:
5197819
Report Number(s):
CONF-860610-Summs.
Journal Information:
Trans. Am. Nucl. Soc.; (United States), Journal Name: Trans. Am. Nucl. Soc.; (United States) Vol. 52; ISSN TANSA
Country of Publication:
United States
Language:
English

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Related Subjects

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ACTINIDE COMPOUNDS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CHALCOGENIDES
COLLOIDS
CRYSTAL STRUCTURE
DENSITY
DISPERSIONS
EVEN-ODD NUCLEI
FABRICATION
FUEL PELLETS
FUELS
GELS
HEAVY NUCLEI
ISOTOPES
MICROSPHERES
MICROSTRUCTURE
MIXED OXIDE FUELS
NUCLEI
OXIDES
OXYGEN COMPOUNDS
PELLETS
PHYSICAL PROPERTIES
POROSITY
RADIOISOTOPES
REPROCESSING
SEPARATION PROCESSES
SINTERING
SOLID FUELS
THORIUM COMPOUNDS
THORIUM OXIDES
URANIUM 233
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM ISOTOPES
URANIUM OXIDES
YEARS LIVING RADIOISOTOPES