At tank Low Activity Feed Homogeneity Analysis Verification

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Description

This report evaluates the merit of selecting sodium, aluminum, and cesium-137 as analytes to indicate homogeneity of soluble species in low-activity waste (LAW) feed and recommends possible analytes and physical properties that could serve as rapid screening indicators for LAW feed homogeneity. The three analytes are adequate as screening indicators of soluble species homogeneity for tank waste when a mixing pump is used to thoroughly mix the waste in the waste feed staging tank and when all dissolved species are present at concentrations well below their solubility limits. If either of these conditions is violated, then the three indicators may ... continued below

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42 pages

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DOUGLAS, J.G. September 28, 2000.

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Description

This report evaluates the merit of selecting sodium, aluminum, and cesium-137 as analytes to indicate homogeneity of soluble species in low-activity waste (LAW) feed and recommends possible analytes and physical properties that could serve as rapid screening indicators for LAW feed homogeneity. The three analytes are adequate as screening indicators of soluble species homogeneity for tank waste when a mixing pump is used to thoroughly mix the waste in the waste feed staging tank and when all dissolved species are present at concentrations well below their solubility limits. If either of these conditions is violated, then the three indicators may not be sufficiently chemically representative of other waste constituents to reliably indicate homogeneity in the feed supernatant. Additional homogeneity indicators that should be considered are anions such as fluoride, sulfate, and phosphate, total organic carbon/total inorganic carbon, and total alpha to estimate the transuranic species. Physical property measurements such as gamma profiling, conductivity, specific gravity, and total suspended solids are recommended as possible at-tank methods for indicating homogeneity. Indicators of LAW feed homogeneity are needed to reduce the U.S. Department of Energy, Office of River Protection (ORP) Program's contractual risk by assuring that the waste feed is within the contractual composition and can be supplied to the waste treatment plant within the schedule requirements.

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42 pages

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INIS; OSTI as DE00804787

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  • Other Information: PBD: 28 Sep 2000

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  • Report No.: RPP-7029, Rev.0
  • Grant Number: AC27-99RL14047
  • DOI: 10.2172/804787 | External Link
  • Office of Scientific & Technical Information Report Number: 804787
  • Archival Resource Key: ark:/67531/metadc737800

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  • September 28, 2000

Added to The UNT Digital Library

  • Oct. 18, 2015, 6:40 p.m.

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  • April 21, 2016, 4:44 p.m.

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DOUGLAS, J.G. At tank Low Activity Feed Homogeneity Analysis Verification, report, September 28, 2000; United States. (digital.library.unt.edu/ark:/67531/metadc737800/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.