Statistical experimental design for saltstone mixtures

Conference · Tue Dec 31 04:00:00 EST 1991

OSTI ID:10136735

Harris, S P; Postles, R L

We used a mixture experimental design for determining a window of operability for a process at the Savannah River Site Defense Waste Processing Facility (DWPF). The high-level radioactive waste at the Savannah River Site is stored in large underground carbon steel tanks. The waste consists of a supernate layer and a sludge layer. {sup 137}Cs will be removed from the supernate by precipitation and filtration. After further processing, the supernate layer will be fixed as a grout for disposal in concrete vaults. The remaining precipitate will be processed at the DWPF with treated waste tank sludge and glass-making chemicals into borosilicate glass. The leach rate properties of the supernate grout, formed from various mixes of solidified salt waste, needed to be determined. The effective diffusion coefficients for NO{sub 3} and Cr were used as a measure of leach rate. Various mixes of cement, Ca(OH){sub 2}, salt, slag and flyash were used. These constituents comprise the whole mix. Thus, a mixture experimental design was used.

• Research Organization: Westinghouse Savannah River Co., Aiken, SC (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC09-89SR18035
• OSTI ID: 10136735
• Report Number(s): WSRC-MS--91-560; CONF-920606--14; ON: DE92010634
• Country of Publication: United States
• Language: English

Related Subjects

052001
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
CEMENTS
CHROMIUM
DIFFUSION
GROUTING
LEACHING
MATHEMATICAL MODELS
MIXTURES
NITRATES
RADIOACTIVE WASTE PROCESSING
SALTS
SAVANNAH RIVER PLANT
SIMULATION
SLUDGES
STATISTICS
TANKS
WASTE PROCESSING