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Accession Number DE2012-1045014
Title Analysis of the Tank 6F Final Characterization Samples-2012 (U).
Publication Date Jun 2012
Media Count 94p
Personal Author C. J. Coleman D. P. Diprete E. P. Shine L. N. Oji M. S. Hay
Abstract The Savannah River National Laboratory (SRNL) was requested by Savannah River Remediation (SRR) to provide sample preparation and analysis of the Tank 6F final characterization samples to determine the residual tank inventory prior to grouting. Fourteen residual Tank 6F solid samples from three areas on the floor of the tank were collected and delivered to SRNL between May and August 2011. These Tank 6F samples were homogenized and combined into three composite samples based on a proportion compositing scheme and the resulting composite samples were analyzed for radiological, chemical and elemental components. Additional measurements performed on the Tank 6F composite samples include bulk density and water leaching of the solids to account for water soluble components. The composite Tank 6F samples were analyzed and the data reported in triplicate. Sufficient quality assurance standards and blanks were utilized to demonstrate adequate characterization of the Tank 6F samples. The main evaluation criteria were target detection limits specified in the technical task request document. While many of the target detection limits were met for the species characterized for Tank 6F some were not met. In a few cases, the relatively high levels of radioactive species of the same element or a chemically similar element precluded the ability to measure some isotopes to low levels. The isotopes whose detection limits were not met in all cases included Sn-126, Sb-126, Sb-126m, Eu-152, Cm- 243 and Cf-249. SRNL, in conjunction with the customer, reviewed all of these cases and determined that the impacts of not meeting the target detection limits were acceptable.
Keywords Bulk density
Evaluation
Floors
Gravity
Inventories
Leaching
Quality assurance
Radioactive waste management
Radioisotopes
Sample preparation
Savannah River Plant
Sensitivity
Storage tanks
Targets
Water

 
Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 77G - Radioactive Wastes & Radioactivity
Corporate Author Savannah River National Lab., Aiken, SC. Savannah River Nuclear Solutions.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1302
Contract Number DE-AC09-08SR22470

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