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    Mixed Waste Solidification Testing on Polymer and Cement-Based Waste forms in Support of Hanford's WRAP 2A Facility


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    A testing program has been conducted by the Westinghouse Hanford Company to confirm the baseline waste form selection for use in Waste Receiving and Processing (WRAP) Module 2A. WRAP Module 2A will provide treatment required to properly dispose of containerized contact-handled, mixed low-level waste at the U.S. Department of Energy Hanford Site in south-central Washington State. Solidification/stabilization has been chosen as the appropriate treatment for this waste. This work will test cement-based, thermosetting polymer, and thermoplastic polymer solidification media to substantiate the technology approach for WRAP Module 2A.

    Screening tests were performed using the major chemical constituent of each waste type to measure the gross compatibility with the immobilization media and to determine formulations for more detailed testing. Surrogate materials representing each of the eight waste types were prepared in the laboratory. These surrogates were then solidified with the selected immobilization media and subjected to a battery of standard performance tests. Detailed discussion of the laboratory work and results are contained in this paper.


    immobilization, stabilization, polymer, cement, grout, polyethylene

    Author Information:

    Burbank, DA
    Engineer, Westinghouse Hanford Company, Richland, Washington,

    Weingardt, KM
    Engineer, Westinghouse Hanford Company, Richland, Washington,

    Committee/Subcommittee: D34.01

    DOI: 10.1520/STP14121S