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Waste currently stored at the Hanford Reservation in underground double-shell and single-shell tanks is being considered for vitrification and disposal. To achieve this, Hanford is conducting a Hanford Waste Vitrification Plant Technology Development Project melter campaign. In this campaign, a requirement was identified to quantify the amount of cadmium depositing in the off-gas line between the liquid-fed ceramic melter and the submerged bed scrubber. This issue of cadmium volatility was raised due to the limited data on cadmium volatility in HLW vitrification. Prior to the start of slurry processing, the off-gas line sections were removed and inspects. Any pre-existing deposits were removed. Following the melter campaign, the lines were again removed and solids deposits were sampled and the quantity of deposits were estimated. The data presented in this package include chemical analysis of feed, glass, line deposits, in-ling off-gas stream, and SBS condensate samples. Process data includes melter feeding and glass production rates, off- gas flow rate, and plenum and off-gas stream temperatures

Detailed Design Data Package item 3.9a: Cadmium buildup in off-gas lines