High level waste properties
Devitrification and leaching analyses of four waste glasses were made to compare non-radioactive compositions to compositions made using fully radioactive waste calcine. Microstructural analyses of the phase behavior of glasses were performed by means of optical microscopy, x-ray diffraction, x-ray fluorescence, scanning electron microscopy, and electron microprobe analysis. The author's summary of the major findings are: Melt insoluables and crystallization products were found to the same extent in both radioactive and non-radioactive glasses of similar composition. High radiation field appeared to have no effect on the crystallization behavior. The results of long-term IAEA static leach tests indicated no significant difference between the average leach rates of the fully radioactive and non-radioactive glass formulations. Glass composition was more important in determining leach rates than was the extent of devitrification. In both short time tests at 75/sup 0/C or longer leach tests at 25/sup 0/C elemental analyses suggested that congruent dissolution did not occur.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, WA (USA)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 5142454
- Report Number(s):
- PNL-SA-8085; CONF-7910184-1; TRN: 80-015156
- Resource Relation:
- Conference: IAEA evaluation of solidified high level radioactive waste products workshop, Berlin, F.R. Germany, 15 Oct 1979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BOROSILICATE GLASS
LEACHING
HIGH-LEVEL RADIOACTIVE WASTES
PHYSICAL PROPERTIES
RADIOACTIVE WASTE PROCESSING
SOLIDIFICATION
ELECTRON MICROPROBE ANALYSIS
ELECTRON MICROSCOPY
GLASS
OPTICAL MICROSCOPY
VITRIFICATION
X-RAY DIFFRACTION
X-RAY FLUORESCENCE ANALYSIS
CHEMICAL ANALYSIS
COHERENT SCATTERING
DIFFRACTION
DISSOLUTION
MANAGEMENT
MICROANALYSIS
MICROSCOPY
NONDESTRUCTIVE ANALYSIS
PHASE TRANSFORMATIONS
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
SCATTERING
SEPARATION PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
X-RAY EMISSION ANALYSIS
052001* - Nuclear Fuels- Waste Processing