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The Defense Waste Processing Facility (DWPF) has begun processing Sludge Batch 3 (SB3). Sludge Batch 3 consists of the heel in Tank 40 (Sludge Batch 2), the contents of Tank 51, and a Np stream from H Canyon. Two dip samples were pulled from Tank 40 in March 2004 after the initial Tank 51 to 40 transfer and the first transfer of Np material from H Canyon. These samples were combined into one sample and characterized by the Savannah River Technology Center (SRTC). The purpose of this characterization is to provide DWPF with a current Tank 40 (SB3) composition for comparison to Sludge Receipt and Adjustment Tank (SRAT) receipt analyses as they transition to the new sludge batch. The conclusions from this analysis are: coal content of the Tank 40 sample was similar to that predicted using analysis of the Tank 51 qualification sample; most, if not all, the sulfur was soluble and in the form of sulfate. Ion Chromatography (IC) analysis of the water dilution of the slurry is adequate for sulfate determination in the SB3 sample. Most, if not all, the oxalate was soluble. IC analysis of the water dilution of the slurry is adequate and the acid strike method is not necessary for oxalate determination in SB3. The yield stress and the consistency for the March 2004 SB3 sample is within the DWPF Operating Region

Characterization of the March 2004 Tank 40 (Sludge Batch 3) Dip Samples