Defense waste processing facility (DWPF) liquids model [electronic resource] : revisions for processing higher TIO<sub>2</sub> containing glasses
- Washington, D.C. : United States. Dept. of Energy, 2017.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- 110 pages : digital, PDF file
- Additional Creators:
- United States. Department of Energy. Savannah River Site
United States. Department of Energy
United States. Department of Energy. Office of Scientific and Technical Information
- Radioactive high level waste (HLW) at the Savannah River Site (SRS) has successfully been vitrified into borosilicate glass in the Defense Waste Processing Facility (DWPF) since 1996. Vitrification requires stringent product/process (P/P) constraints since the glass cannot be reworked once it is poured into ten foot tall by two foot diameter canisters. A unique “feed forward” statistical process control (SPC) was developed for this control rather than statistical quality control (SQC). In SPC, the feed composition to the DWPF melter is controlled prior to vitrification. In SQC, the glass product would be sampled after it is vitrified. Individual glass property-composition models form the basis for the “feed forward” SPC. The models transform constraints on the melt and glass properties into constraints on the feed composition going to the melter in order to guarantee, at the 95% confidence level, that the feed will be processable and that the durability of the resulting waste form will be acceptable to a geologic repository. This report documents the development of revised TiO<sub>2</sub>, Na<sub>2</sub>O, Li<sub>2</sub>O and Fe<sub>2</sub>O<sub>3</sub> coefficients in the SWPF liquidus model and revised coefficients (a, b, c, and d).
- Published through SciTech Connect.
C. M. Jantzen; T. B. Edwards; C. L. Trivelpiece.
- Funding Information:
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