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Title: Initial studies of pretreatment methods for neutralized cladding removal waste (NCRW) sludge

Technical Report ·
DOI:https://doi.org/10.2172/5758681· OSTI ID:5758681

Pacific Northwest Laboratory (PNL) is performing conceptual and experimental studies for Westinghouse Hanford Company (WHC) aimed at determining the effectiveness of various pretreatment methods for the neutralized cladding removal waste (NCRW) sludge currently being stored at the Hanford Site of the US Department of Energy (DOE). The objective of such pretreatment methods is to separate the transuranic (TRU) elements and the bulk components of the waste (primarily zirconium, sodium, fluoride, and hydroxide) to a level low enough that the bulk components can be disposed of as low-level waste (LLW), with only a small volume, TRU-containing fraction requiring geologic disposal. This objective is driven primarily by the large cost differential projected between LLW and geologic disposal procedures. This report contains the results of the first three years (1987, 1988, and 1989) of the program. These results were earlier reported informally in letter reports; they are here compiled in appendix form in this formal report to be more readily available to other workers and the public. The results of work done in 1990 and in following years will be reported in separate formal reports.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE; USDOE, Washington, DC (USA)
DOE Contract Number:
AC06-76RL01830
OSTI ID:
5758681
Report Number(s):
PNL-7716; ON: DE91015301
Country of Publication:
United States
Language:
English