Performance Modeling Applied to the Treatment and Disposal of a Mixed Waste at the SRS
- Westinghouse Savannah River Co., Aiken, SC (United States)
- Dames and Moore, Orchard Park, NY (United States)
- Clemson University, Clemson, SC (United States)
Performance modeling for Low Level Mixed Waste disposal was conducted using the measured leach rates from a number of vitrified waste formulations. The objective of the study was to determine if the improved durability of a vitrified mixed waste would allow trench disposal at the Savannah River Site (SRS). Leaching data were compiled from twenty-nine diverse reference glasses, encompassing a wide range of exposed glass surface area to leachant volume ratios (SA/V), and various leachant solutions; all of which had been leached at 90 degrees Celsius, using the MCC-1 or PCT procedures (ASTM Procedures C1220-92 and C1285-94, respectively). The normalized leach rates were scaled to the ambient disposal temperature of 25 degrees Celsius, and compared to the allowable leach rate of uranium - which would meet the performance assessment requirements. The results indicated that a glass of above average durability (vs. the reference glasses) would meet the uranium leaching concentration for direct SRS trench disposal.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-96SR18500; FC09-93SR18262
- OSTI ID:
- 604316
- Report Number(s):
- WSRC-TR-97-00327; CONF-970568-; ON: DE98052750; TRN: 98:005502
- Resource Relation:
- Conference: 99. annual meeting of the American Ceramic Society, Cincinnati, OH (United States), 4-7 May 1997; Other Information: PBD: May 1997
- Country of Publication:
- United States
- Language:
- English
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