Glass optimization for vitrification of Hanford Site low-level tank waste

Technical Report · Fri Mar 01 04:00:00 EST 1996

DOI:https://doi.org/10.2172/219300· OSTI ID:219300

Feng, X; Hrma, P R; Westsik, Jr, J H ^[1]

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1. and others

The radioactive defense wastes stored in 177 underground single-shell tanks (SST) and double-shell tanks (DST) at the Hanford Site will be separated into low-level and high-level fractions. One technology activity underway at PNNL is the development of glass formulations for the immobilization of the low-level tank wastes. A glass formulation strategy has been developed that describes development approaches to optimize glass compositions prior to the projected LLW vitrification facility start-up in 2005. Implementation of this strategy requires testing of glass formulations spanning a number of waste loadings, compositions, and additives over the range of expected waste compositions. The resulting glasses will then be characterized and compared to processing and performance specifications yet to be developed. This report documents the glass formulation work conducted at PNL in fiscal years 1994 and 1995 including glass formulation optimization, minor component impacts evaluation, Phase 1 and Phase 2 melter vendor glass development, liquidus temperature and crystallization kinetics determination. This report also summarizes relevant work at PNNL on high-iron glasses for Hanford tank wastes conducted through the Mixed Waste Integrated Program and work at Savannah River Technology Center to optimize glass formulations using a Plackett-Burnam experimental design.

• Research Organization: Pacific Northwest National Lab., Richland, WA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 219300
• Report Number(s): PNNL--10918; ON: DE96009027
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
ADDITIVES
CERAMIC MELTERS
CHEMICAL COMPOSITION
CHLORINE
CHROMIUM
CORROSION RESISTANCE
EXPERIMENTAL DATA
FLUORINE
GLASS
HANFORD RESERVATION
LOADING RATE
LOW-LEVEL RADIOACTIVE WASTES
MATERIALS TESTING
PERFORMANCE TESTING
PHOSPHORUS
REMEDIAL ACTION
SODIUM COMPOUNDS
SOLUBILITY
STORAGE FACILITIES
SULFUR
VISCOSITY
VITRIFICATION
WASTE FORMS