| Title: |
DEFENSE WASTE PROCESSING FACILITY ANALYTICAL METHOD VERIFICATION FOR THE SLUDGE BATCH 5 QUALIFICATION SAMPLE |
| Authors: |
Click, D; Tommy Edwards, T; Henry Ajo, H |
| Contributors: |
United States. Department of Energy. |
| Publisher Information: |
Savannah River Site (S.C.) |
| Publication Year: |
2008 |
| Collection: |
University of North Texas: UNT Digital Library |
| Subject Terms: |
Sludges; Sample Preparation; Radioactive Waste Facilities; Recommendations; Radioactive Waste Processing; Performance Testing; Multi-Element Analysis; 12 Management Of Radioactive Wastes; And Non-Radioactive Wastes From Nuclear Facilities |
| Description: |
For each sludge batch that is processed in the Defense Waste Processing Facility (DWPF), the Savannah River National Laboratory (SRNL) performs confirmation of the applicability of the digestion method to be used by the DWPF lab for elemental analysis of Sludge Receipt and Adjustment Tank (SRAT) receipt samples and SRAT product process control samples. DWPF SRAT samples are typically dissolved using a room temperature HF-HNO3 acid dissolution (i.e., DWPF Cold Chem Method, see Procedure SW4-15.201) and then analyzed by inductively coupled plasma - atomic emission spectroscopy (ICP-AES). This report contains the results and comparison of data generated from performing the Aqua Regia (AR), Sodium Peroxide/Hydroxide Fusion (PF) and DWPF Cold Chem (CC) method digestion of Sludge Batch 5 (SB5) SRAT Receipt and SB5 SRAT Product samples. The SB5 SRAT Receipt and SB5 SRAT Product samples were prepared in the SRNL Shielded Cells, and the SRAT Receipt material is representative of the sludge that constitutes the SB5 Batch composition. This is the sludge in Tank 51 that is to be transferred into Tank 40, which will contain the heel of Sludge Batch 4 (SB4), to form the SB5 Blend composition. The results for any one particular element should not be used in any way to identify the form or speciation of a particular element in the sludge or used to estimate ratios of compounds in the sludge. A statistical comparison of the data validates the use of the DWPF CC method for SB5 Batch composition. However, the difficulty that was encountered in using the CC method for SB4 brings into question the adequacy of CC for the SB5 Blend. Also, it should be noted that visible solids remained in the final diluted solutions of all samples digested by this method at SRNL (8 samples total), which is typical for the DWPF CC method but not seen in the other methods. Recommendations to the DWPF for application to SB5 based on studies to date: (1) A dissolution study should be performed on the WAPS sample by SRNL which consists of the final ... |
| Document Type: |
report |
| File Description: |
Text |
| Language: |
English |
| Relation: |
osti: 939423; https://digital.library.unt.edu/ark:/67531/metadc901101/; ark: ark:/67531/metadc901101 |
| DOI: |
10.2172/939423 |
| Availability: |
https://doi.org/10.2172/939423; https://digital.library.unt.edu/ark:/67531/metadc901101/ |
| Accession Number: |
edsbas.5B6B05C |
| Database: |
BASE |