Product Consistency Test Results for the High-Chromium Matrix Glasses

Technical Report · Wed Apr 15 04:00:00 EDT 2020

DOI:https://doi.org/10.2172/1616265· OSTI ID:1616265

Fox, Kevin M. ^[1]; Hsieh, Madison C. ^[1]; Edwards, T. B. ^[1]

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1. Savannah River National Lab. (SRNL), Aiken, SC (United States)

This report provides chemical analysis of a series of Product Consistency Test (PCT) leachates from simulated nuclear waste glasses. The resulting data will be used in the development of improved property/composition models. For some of the glass leachates, minor scatter among the triplicate values of some analytes was observed. For other leachates, there were more significant differences among the triplicate values. A review of the PCT data noted that there was little difference between the normalized values on the basis of targeted or measured glass composition. Several of the study glasses, both quenched and canister centerline cooled, have NC_i values that are greater than the Hanford Tank Waste Treatment and Immobilization Plant immobilized low-activity waste constraint of 4 g/L for B, Na, and Si. For many of the study glasses, heat treatment had only a marginal impact on the NC_i values. The samples of the Environmental Assessment (EA) reference glass included with each PCT set had inconsistent NC_i values, although some degree of variation in NC_i values for the EA glass is typical. The release rates for boron and sodium were highly correlated for the study glasses, while for the other analytes, less correlation was observed.

• Research Organization: Savannah River National Laboratory (SRNL), Aiken, SC (United States)
• Sponsoring Organization: USDOE Office of Environmental Management (EM)
• DOE Contract Number: AC09-08SR22470
• OSTI ID: 1616265
• Report Number(s): SRNL-STI--2020-00136
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
Hanford
WTP
durability
waste glass