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Title: Implication of the Statistical Review of the Side By-Side Comparison of DWPF's ICPS

Abstract

The Statistical Consulting Section (SCS) of the Savannah River National Laboratory received data from a series of side-by-side comparisons of two Inductively Coupled Plasma-Atomic Emission Spectrometers (ICPs) conducted by the Defense Waste Processing Facility Laboratory of Waste Laboratory Services. These two ICPs are designated as M-14, the current production ICP, and M-13, the new ICP being evaluated. The data received by SCS were outlined in the test plan [1] describing the series of tests, which involved three sample preparation methods, denoted as: ''cold chem,'' fusion, and mixed acid. A cold chemical (cold chem) preparation is used for samples of the Sludge Receipt and Adjustment Tank, SRAT, product. Fusion and mixed acid dissolutions are used to prepare samples of the Slurry Mix Evaporator, SME. For each of these three dissolution methods, several types of samples were prepared and measured (for chemical composition) by both ICPs. The samples included process samples (SRAT product for cold chem and SME product for fusion and mixed acid), blanks, check standards, and samples of the Analytical Reference Glass One, ARG-1. Groups of these samples were measured under 6 different calibrations of each of the two ICPs. The measurements of the process and ARG-1 samples were providedmore » by element (16 elements in all) as weight percent concentrations. For these samples the elemental concentrations were converted to their corresponding oxide concentrations by using the appropriate gravimetric factors. In addition to these measurements, data associated with the determinations of the limit of detection, LOD, and limit of quantification, LOQ, for each element of interest for each ICP were provided to SCS.« less

Authors:
Publication Date:
Research Org.:
Savannah River Site (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
833805
Report Number(s):
WSRC-TR-2004-00379
TRN: US0406800
DOE Contract Number:
AC09-96SR18500
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Jul 2004
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; CHEMICAL COMPOSITION; DETECTION; DISSOLUTION; GLASS; OXIDES; PRODUCTION; SAMPLE PREPARATION; SAVANNAH RIVER PLANT; SLUDGES; SPECTROMETERS; WASTE PROCESSING; WASTES; STATISTICS; SME; PCCS; SRAT

Citation Formats

EDWARDS, THOMASB. Implication of the Statistical Review of the Side By-Side Comparison of DWPF's ICPS. United States: N. p., 2004. Web. doi:10.2172/833805.
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EDWARDS, THOMASB. Implication of the Statistical Review of the Side By-Side Comparison of DWPF's ICPS. United States. doi:10.2172/833805.
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EDWARDS, THOMASB. Thu . "Implication of the Statistical Review of the Side By-Side Comparison of DWPF's ICPS". United States. doi:10.2172/833805. https://www.osti.gov/servlets/purl/833805.
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@article{osti_833805,
title = {Implication of the Statistical Review of the Side By-Side Comparison of DWPF's ICPS},
author = {EDWARDS, THOMASB.},
abstractNote = {The Statistical Consulting Section (SCS) of the Savannah River National Laboratory received data from a series of side-by-side comparisons of two Inductively Coupled Plasma-Atomic Emission Spectrometers (ICPs) conducted by the Defense Waste Processing Facility Laboratory of Waste Laboratory Services. These two ICPs are designated as M-14, the current production ICP, and M-13, the new ICP being evaluated. The data received by SCS were outlined in the test plan [1] describing the series of tests, which involved three sample preparation methods, denoted as: ''cold chem,'' fusion, and mixed acid. A cold chemical (cold chem) preparation is used for samples of the Sludge Receipt and Adjustment Tank, SRAT, product. Fusion and mixed acid dissolutions are used to prepare samples of the Slurry Mix Evaporator, SME. For each of these three dissolution methods, several types of samples were prepared and measured (for chemical composition) by both ICPs. The samples included process samples (SRAT product for cold chem and SME product for fusion and mixed acid), blanks, check standards, and samples of the Analytical Reference Glass One, ARG-1. Groups of these samples were measured under 6 different calibrations of each of the two ICPs. The measurements of the process and ARG-1 samples were provided by element (16 elements in all) as weight percent concentrations. For these samples the elemental concentrations were converted to their corresponding oxide concentrations by using the appropriate gravimetric factors. In addition to these measurements, data associated with the determinations of the limit of detection, LOD, and limit of quantification, LOQ, for each element of interest for each ICP were provided to SCS.},
doi = {10.2172/833805},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jul 01 00:00:00 EDT 2004},
month = {Thu Jul 01 00:00:00 EDT 2004}
}
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Technical Report:
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DOI:  10.2172/833805
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  • The measurements derived from samples taken during the processing of batches 19 through 30 at the Defense Waste Processing Facility (DWPF) affords an opportunity for review and comparisons. This report has looked at some of the statistics from these data. Only the data reported by the DWPF lab (that is, the data provided by the lab as representative of the samples taken) are available for this analysis. In some cases, the sample results reported may be a subset of the sample results generated by the analytical procedures. A thorough assessment of the DWPF lab's analytical procedures would require the completemore » set of data. Thus, the statistics reported here, specifically, as they relate to analytical uncertainties, are limited to the reported data for these samples, A fell for the consistency of the incoming slurry is the estimation of the components of variation for the Sludge Receipt and Adjustment Tank (SRAT) receipts. In general, for all of the vessels, the data from batches after 21 show smaller batch-to-batch variation than the data from all the batches. The relative contributions of batch-to-batch versus residual, which includes analytical, are presented in these analyses.« less

  • The measurements derived from samples taken during the processing of macro-batch 1 (MB1) at the Defense Waste Processing Facility (DWPF) have been reviewed and compared in this report. Batches 22 through 93 were the focal point of this study. Statistical control charts were developed for each analyte for each vessel to identify influential or exceptional results in the variation, central tendency, or both for the measurements. These charts should serve as a basis for observing the (expected) impact of some decisions made during the processing of this macro-batch.

  • The measurements derived from samples taken during the processing of batches 19 through 30 at the Defense Waste Processing Facility (DWPF) affords an opportunity for review and comparisons. This report has looked at some of the statistics from these data. Only the data reported by the DWPF lab (that is, the data provided by the lab as representative of the samples taken) are available for this analysis. In some cases, the sample results reported may be a subset of the sample results generated by the analytical procedures. A thorough assessment of the DWPF lab's analytical procedures would require the completemore » set of data. Thus, the statistics reported here, specifically, as they relate to analytical uncertainties, are limited to the reported data for these samples, A fell for the consistency of the incoming slurry is the estimation of the components of variation for the Sludge Receipt and Adjustment Tank (SRAT) receipts. In general, for all of the vessels, the data from batches after 21 show smaller batch-to-batch variation than the data from all the batches. The relative contributions of batch-to-batch versus residual, which includes analytical, are presented in these analyses.« less

  • The Statistical Consulting Section of the Savannah River National Laboratory has conducted a statistical evaluation of side-by-side measurement data generated at the Defense Waste Processing Facility, DWPF, using two Leeman Labs Inductively Coupled Plasma Atomic Emission Spectrometers, ICPs, the production ICP, designated as M-13, and a new Leeman ICP, designated as M-14. The purpose of this report is to document the implications of the statistical evaluation relative to the qualification of the M-14 for use at DWPF. While additional work is needed to fully integrate the M-14 and M-13 ICPs into DWPFs operational systems use of the M-14 ICP willmore » be adequate for sludge/frit blending and will lead to reliable SME acceptability decisions for product quality. For a sludge/frit system that is limited by a process property prediction such as viscosity or liquidus temperature as waste loading is increased, the SME blending strategy can be adjusted to lessen the impact of an incomplete definition of the M-14s measurement uncertainty on the PCCS acceptability decision until such time as the complete definition of that uncertainty can be determined for the M-14 as well as the M-13. A task is currently underway to address this issue. However, the evaluations presented in this report result in no changes, nor recommendations for changes, to PCCS.« less

  • ; ;
    The chemical composition of Missouri coals from active mining areas in northern and western Missouri has been investigated using X-ray fluorescence, optical emission, neutron activation, and wet chemical techniques including atomic absorption. Thirty complete, unweathered face channel samples were collected, representing 11 different coal beds of the Desmoinesian Series of the Pennsylvanian System of Missouri. Major and minor elements were determined. Ten major and minor elements and at least 20 trace elements in 20 coal samples representing 5 counties were grouped by geographic area and correlated using R-mode factor analysis. The mineral phases present in the coal and whether themore » elements show organic or inorganic affinity were inferred using this technique. The best statistical sorting was found in Henry County in western Missouri. Proximate (percent moisture, ash, volatile matter, and fixed carbon) and ultimate (percent carbon, oxygen, hydrogen, nitrogen, sulfur, and ash) analyses, Btu content, and forms of sulfur were also determined.« less