Preliminary assessment of candidate immobilization technologies for retrieved single-shell tank wastes

Technical Report · Wed Jan 01 00:00:00 EST 1992

DOI:https://doi.org/10.2172/10120322· OSTI ID:10120322

Wiemers, K D; Mendel, J E; Kruger, A A; Bunnell, L R; Mellinger, G B

This report describes the initial work that has been performed to select technologies for immobilization of wastes that may be retrieved from Hanford single-shell tanks (SSTs). Two classes of waste will require immobilization. One is the combined high-level waste/transuranic (HLW/TRU) fraction, the other the low-level waste (LLW) fraction. A number of potential immobilization technologies are identified for each class of waste. Immobilization technologies were initially selected based on a number of considerations, including (1) the waste loading that could likely be achieved within the constraint of producing acceptable waste forms, (2) process flexibility (primarily compatibility with anticipated waste variability), (3) process complexity, and (4) state of development. Immobilization technologies selected for further development include the following: for HLW/TRU waste -- borosilicate glass, lead-iron phosphate glass, glass-calcine composites, glass-ceramics, and cement based forms; for non-denitrated LLW -- grout, laxtex-modified concrete, and polyethylene; and for denitrated LLW -- silicate glass, phosphate glass, and clay calcination or tailored ceramic in various matrices.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 10120322
• Report Number(s): PNL-7918; ON: DE92007511
• Resource Relation: Other Information: PBD: Jan 1992
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
HIGH-LEVEL RADIOACTIVE WASTES
RADIOACTIVE WASTE MANAGEMENT
LOW-LEVEL RADIOACTIVE WASTES
ALPHA-BEARING WASTES
TANKS
HANFORD RESERVATION
STORAGE FACILITIES
WASTE FORMS
VITRIFICATION
CEMENTS
GLASS
CALCINATION
RADIOACTIVE WASTE PROCESSING
052001
052002
WASTE PROCESSING
WASTE DISPOSAL AND STORAGE