USE OF FUSED SALT-FLUORIDE VOLATILITY PROCESS WITH IRRADIATED URANIA DECAYED 15-30 DAYS
Technical Report
·
OSTI ID:4762658
In laboratory tests U recovered from irradiated UO/sub 2/ fuel decayed l5 to 30 days was highly decontaminated from short-half-life fission products by the fused salt-fluoride volatility process. Radioactive I/sub 2/ and Te, which form volatile fluorides, were effectively separated from the UF/sub 6/ product in the NaF absorption step operated at 100 deg C. Radioactive Nb, Ru, and Zr behaved in accordance with previous work, resulting also in good decontamination of the UF/sub 6/ product from their respective fiuorides. The behavio: of Mo/sup 99/ F/ sub 6/ with a half life of 6.7 hr in the NaF absorption step was in agreement with other work on the MoF/sub 6/-NaF system. The disappearance of radioactive I/ sub 2/, Te, Nb, Ru, and Mo in the fused salt dissolution step indicated that precipitation or volatilization and condensation at the top of the dissolution reactor occurred, with not much of the material being carried out of the vessel with the excess HF. Dissolution rates for the irradiated UO/sub 2/ clad in Zircaloy-2, used as feed material, were approximately the same as those obtained with unirradiated material. (auth)
- Research Organization:
- Oak Ridge National Lab., Tenn.
- DOE Contract Number:
- W-7405-ENG-26
- NSA Number:
- NSA-16-031675
- OSTI ID:
- 4762658
- Report Number(s):
- ORNL-3280
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ADSORPTION
CANNING
CHEMISTRY
COATING
DECAY
DECONTAMINATION
EVAPORATION
FISSION PRODUCTS
FLUORIDES
FUELS
FUSED SALTS
HALF-LIFE
HYDROFLUORIC ACID
IODINE FLUORIDES
IRRADIATION
LIQUEFYING
MOLYBDENUM 99
MOLYBDENUM FLUORIDES
NIOBIUM FLUORIDES
PLATING
PRECIPITATION
RADIOISOTOPES
REPROCESSING
RUTHENIUM FLUORIDES
SEPARATION PROCESSES
SODIUM FLUORIDES
SOLUTIONS
TELLURIUM FLUORIDES
TESTING
URANIUM DIOXIDE
URANIUM HEXAFLUORIDE
VELOCITY
VESSELS
VOLATILITY
WASTE PROCESSING
ZIRCALOY
ZIRCONIUM FLUORIDES
CANNING
CHEMISTRY
COATING
DECAY
DECONTAMINATION
EVAPORATION
FISSION PRODUCTS
FLUORIDES
FUELS
FUSED SALTS
HALF-LIFE
HYDROFLUORIC ACID
IODINE FLUORIDES
IRRADIATION
LIQUEFYING
MOLYBDENUM 99
MOLYBDENUM FLUORIDES
NIOBIUM FLUORIDES
PLATING
PRECIPITATION
RADIOISOTOPES
REPROCESSING
RUTHENIUM FLUORIDES
SEPARATION PROCESSES
SODIUM FLUORIDES
SOLUTIONS
TELLURIUM FLUORIDES
TESTING
URANIUM DIOXIDE
URANIUM HEXAFLUORIDE
VELOCITY
VESSELS
VOLATILITY
WASTE PROCESSING
ZIRCALOY
ZIRCONIUM FLUORIDES