Tank 40 Final Sb6 Chemical Characterization Results

Bannochie, C. J.

doi:10.2172/986354

Cited by 8 publications

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“…The details for sample acquisition from Tank 40 -SB6, preparation of the digestions, and measurement of the elemental composition have been published separately 10 . The results for those radionuclides that required additional separation techniques, that were not included in the referenced report, have been included in this report.…”

Section: Methodsmentioning

confidence: 99%

“…Inductively coupled plasma -mass spectrometry (ICP-MS) was employed to analyze separate subsamples of the aqua regia digestions of the adjusted Tank 40 -SB6 dried solids described in a previous report 10 . Measurements were first converted to weight percents on a dried solids basis and then converted to activities using the specific activity of each isotope taken from Reference (11).…”

Section: Icp-msmentioning

confidence: 99%

“…Gamma Pulse Height Analysis (PHA) was performed on separate sub-samples of the alkali fusion (also known as "peroxide fusion") digestions of the adjusted Tank 40 -SB6 dried solids described in a previous report 10 . Detectors were carefully calibrated with known standards.…”

Section: Gamma Countingmentioning

confidence: 99%

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Determination of Reportable Radionuclides for DWPF Sludge Batch 6 (Macrobatch 7)

Bannochie¹,

DiPrete²

2011

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Section: Methodsmentioning

confidence: 99%

Section: Icp-msmentioning

confidence: 99%

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Determination of Reportable Radionuclides for DWPF Sludge Batch 6 (Macrobatch 7)

Bannochie¹,

DiPrete²

2011

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“…The WDF for a specific sludge batch is given by where CS(i) is the concentration of component i in the dried Tank 40 sludge 18 and CG(i) is the concentration of component i in the corresponding pour stream glass sample. Table 5-3 and Table 5-4 in Appendix A provide the actual measured radiological chemical and ICP-MS data, respectively.…”

Section: Wdfmentioning

confidence: 99%

“…Table 5-4 in Appendix A provides the actual measured ICP-MS data. The calculated noble metal concentration in the glass is determined from the concentration in the Tank 40 sludge 18 and the average WDF value (Table 3 -4).…”

Section: Noble Metalsmentioning

confidence: 99%

Analysis of DWPF Sludge Batch 6 (Macrobatch 7) Pour Stream Glass Samples

Johnson¹

2012

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Tank 40 Final Sb7b Chemical Characterization Results

Bannochie¹

2012

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A sample of Sludge Batch 7b (SB7b) was taken from Tank 40 in order to obtain radionuclide inventory analyses necessary for compliance with the Waste Acceptance Product Specifications (WAPS) i. The SB7b WAPS sample was also analyzed for chemical composition including noble metals and fissile constituents, and these results are reported here. These analyses along with the WAPS radionuclide analyses will help define the composition of the sludge in Tank 40 that is currently being fed to the Defense Waste Processing Facility (DWPF) as SB7b. At the Savannah River National Laboratory (SRNL) the 3-L Tank 40 SB7b sample was transferred from the shipping container into a 4-L high density polyethylene bottle and solids were allowed to settle over the weekend. Supernate was then siphoned off and circulated through the shipping container to complete the transfer of the sample. Following thorough mixing of the 3-L sample, a 558 g sub-sample was removed. This sub-sample was then utilized for all subsequent analytical samples. Eight separate aliquots of the slurry were digested, four with HNO 3 /HCl (aqua regia ii) in sealed Teflon ® vessels and four with NaOH/Na 2 O 2 (alkali or peroxide fusion iii) using Zr crucibles. Two Analytical Reference Glass-1 iv (ARG-1) standards were digested along with a blank for each preparation. Each aqua regia digestion and blank was diluted to 1:100 mL with deionized water and submitted to Analytical Development (AD) for inductively coupled plasma-atomic emission spectroscopy (ICP-AES) analysis, inductively coupled plasma-mass spectrometry (ICP-MS) analysis, atomic absorption spectroscopy (AA) for As and Se, and cold vapor atomic absorption spectroscopy (CV-AA) for Hg. Equivalent dilutions of the alkali fusion digestions and blank were submitted to AD for ICP-AES analysis. Tank 40 SB7b supernate was collected from a mixed slurry sample in the SRNL Shielded Cells and submitted to AD for ICP-AES, ion chromatography (IC), total base/free OH-/other base, total inorganic carbon/total organic carbon (TIC/TOC) analyses, and Cs-137 gamma scan v. Weighted dilutions of slurry were submitted for IC, TIC/TOC, and total base/free OH-/other base analyses.

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Tank 40 Final Sb6 Chemical Characterization Results

Cited by 8 publications

References 0 publications

Determination of Reportable Radionuclides for DWPF Sludge Batch 6 (Macrobatch 7)

Determination of Reportable Radionuclides for DWPF Sludge Batch 6 (Macrobatch 7)

Analysis of DWPF Sludge Batch 6 (Macrobatch 7) Pour Stream Glass Samples

Tank 40 Final Sb7b Chemical Characterization Results

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