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

Bannochie, C; DiPrete, D. P.

doi:10.2172/1017430

Cited by 3 publications

(3 citation statements)

References 7 publications

(14 reference statements)

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“…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 inorganic carbon/total organic carbon (TIC/TOC), total base/free OH -/other base analyses, and Cs-137 gamma scan 8 . Weighted dilutions of slurry were submitted for IC, TIC/TOC, and total base/free OH -/other base analyses.…”

Section: Methodsmentioning

confidence: 99%

“…The Pu-241 value was determined from a Pu-238/-241 method developed by SRNL AD and previously described. 8 Table 3-1 presents the measured SB7b density and weight percent solids data 9,10 collected for the SB7b WAPS sample taken in January 2012. Table 3-1 also contains data from the DWPF Sludge Receipt and Adjustment Tank (SRAT) receipt sample data for Batch #614 as a comparison.…”

Section: Methodsmentioning

confidence: 99%

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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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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Tank 40 Final Sb7b Chemical Characterization Results

Bannochie¹

2012

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“…The Pu-241 value was determined from a Pu-238/-241 method developed by SRNL AD and previously described. 8 2. Table 3-1 presents the measured SB9 density and weight percent solids data 9,10 collected for the SB9 WAPS sample taken in February 2017.…”

Section: Sample Handling and Preparationsmentioning

confidence: 99%

Tank 40 final sludge batch 9 chemical and fissile radionuclide characterization results

Bannochie

Kubilius

Pareizs

2017

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A sample of Sludge Batch (SB) 9 was pulled from Tank 40 in order to obtain radionuclide inventory analyses necessary for compliance with the Waste Acceptance Product Specifications (WAPS) i. The SB9 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 fed to the Defense Waste Processing Facility (DWPF) as SB9. At the Savannah River National Laboratory (SRNL), the 3-L Tank 40 SB9 sample was transferred from the shipping container into a 4-L high density polyethylene bottle and solids were allowed to settle. 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 547 g sub-sample was removed. This sub-sample was then utilized for all subsequent slurry sample preparations. 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. Three 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 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 SB9 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. Weighted dilutions of slurry were submitted for IC, TIC/TOC, and total base/free OH-/other base analyses.

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Radiometric detector options to aid in DOE high activity waste tank in situ characterization efforts

DiPrete

McMahon

et al. 2012

J Radioanal Nucl Chem

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

Cited by 3 publications

References 7 publications

Tank 40 Final Sb7b Chemical Characterization Results

Tank 40 Final Sb7b Chemical Characterization Results

Tank 40 final sludge batch 9 chemical and fissile radionuclide characterization results

Radiometric detector options to aid in DOE high activity waste tank in situ characterization efforts

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