Characterization of projected DWPF glasses heat treated to simulate canister centerline cooling
Liquid high-level nuclear waste will be immobilized at the Savannah River Site (SRS) by vitrification in borosilicate glass. The glass will be produced and poured into stainless steel canisters in the Defense Waste Processing Facility (DWPF). Eventually these canistered waste forms will be sent to a geologic repository for final disposal. In order to assure acceptability by the repository, the Department of Energy has defined requirements which DWPF canistered waste forms must meet. These requirements are the Waste Acceptance Preliminary Specifications (WAPS). The WAPS require DWPF to identify the crystalline phases expected to be present in the final glass product. Knowledge of the thermal history of the borosilicate glass during filling and cooldown of the canister is necessary to determine the amount and type of crystalline phases present in the final glass product. Glass samples of seven projected DWPF compositions were cooled following the same temperature profile as that of glass at the centerline of the full-scale DWPF canister. The glasses were characterized by x-ray diffraction and scanning electron microscopy to identify the crystalline phases present The volume percents of each crystalline phase present were determined by quantitative x-ray diffraction. The Product Consistency Test (PCI) was used to determine the durability of the heat-treated glasses.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-89SR18035
- OSTI ID:
- 10110635
- Report Number(s):
- WSRC-TR-92-142; ON: DE93003325
- Resource Relation:
- Other Information: PBD: May 1992
- Country of Publication:
- United States
- Language:
- English
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Characterization of projected DWPF glasses heat treated to simulate canister centerline cooling. Revision 1
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Related Subjects
HIGH-LEVEL RADIOACTIVE WASTES
UNDERGROUND DISPOSAL
VITRIFICATION
BOROSILICATE GLASS
EVALUATION
WASTE FORMS
SPECIFICATIONS
SAVANNAH RIVER PLANT
X-RAY DIFFRACTION
SCANNING ELECTRON MICROSCOPY
CONTAINERS
COOLING
QUALITY ASSURANCE
LEACHING
PHASE STUDIES
052001
052002
WASTE PROCESSING
WASTE DISPOSAL AND STORAGE