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The primary objective of the West ValleyDemonstrationProject (WVDP)isthe solidificationof approximately 2.1 million liters (560,000gallons) of high-level radioactivewaste (HLW)which resulted from the operation of a nuclear fuel reprocessing plant. Since the original plant was not built to accommodate the processing of wastebeyond storage in underground tanks, HLWsolidification byvitrification presented numerous engineering challenges Existing facilities required redesign and conversion to meet their new purpose. Vitrification technology and systems neededto be created and then tested. Equipment modifications, identifiedfrom cold test results, were incorporated into the final equipment configuration to be used for radioactive (hot) operations. Cold operations have defined the correct sequence and optimal functioning of the equipment to be used for vitrification and haveverified the process by which waste will be solidified into borosilicate glass.

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