A statistical approach for characterizing chemical durability within a waste glass compositional region

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Nucl. Chem. Waste Manage.; (United States)

DOI:https://doi.org/10.1016/0956-053X(89)90061-5· OSTI ID:6257246

Piepel, G F; Mellinger, G B; Reimus, M A.H.

In order to qualify nuclear waste forms for disposal in geological repositories, waste glass producers must adequately describe the properties of the glass. One of the most important of these properties is chemical durability (resistance to leaching). An approach for characterizing the chemical durability of a producer's waste glass form must take into account that the composition of the glass will vary during production. Thus, leach testing performed as part of the characterization effort must investigate the range of glasses that are likely to be produced. Also, the approach must account for the fact that only a limited number of compositional variations can be tested and that the leach test results will be subject to uncertainty. A statistical approach that satisfies these goals is presented. The statistical approach for characterizing the chemical durability of waste glasses in a specified compositional region involves the following steps: defining the compositional region of anticipated production glasses, selecting a test matrix of compositions via computer-aided experimental design techniques, leach testing, empirical modeling of the leach test results, investigating glass component effects, and using statistical confidence statements to describe chemical durability over the compositional region. These steps are illustrated using the results of work performed at Pacific Northwest Laboratory for West Valley Nuclear Services.

• Research Organization: Pacific Northwest Lab., Richland, WA (US)
• OSTI ID: 6257246
• Journal Information: Nucl. Chem. Waste Manage.; (United States), Journal Name: Nucl. Chem. Waste Manage.; (United States) Vol. 9:1; ISSN NCWMD
• Country of Publication: United States
• Language: English

Related Subjects

052002 -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
360605* -- Materials-- Radiation Effects
510300 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
BATTELLE PACIFIC NORTHWEST LABORATORIES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COMPUTER-AIDED DESIGN
DATA
DISSOLUTION
ENVIRONMENTAL EFFECTS
EXPERIMENTAL DATA
GLASS
INFORMATION
LEACHING
MANAGEMENT
NATIONAL ORGANIZATIONS
NUCLEAR FACILITIES
NUMERICAL DATA
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTE FACILITIES
RADIOACTIVE WASTE STORAGE
SEPARATION PROCESSES
STORAGE
US DOE
US ERDA
US ORGANIZATIONS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTE STORAGE