Chloride content of dissolver solution from Rocky Flats scrub alloy ninth and tenth campaigns following head end treatment

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F-Canyon continues to obtain excellent chloride removal from Rocky Flats scrub alloy (RFSA) dissolver solution during head end treatment. One single batch of solution from the ninth RFSA campaign, dissolved in January and February of this year, and two batches from the tenth campaign, dissolved in February, have been successfully processed. Following dissolution in Tank 6.4D, chloride was precipitated with mercurous ion added as the nitrate. The precipitate, Hg{sub 2}Cl{sub 2}, was concurrently removed with the gelatin floc via centrifugation. For each of these three batches processed, a set of duplicate samples was obtained from Tank 11.2 or from Tank ... continued below

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6 p.

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Holcomb, H.P. March 8, 1988.

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Description

F-Canyon continues to obtain excellent chloride removal from Rocky Flats scrub alloy (RFSA) dissolver solution during head end treatment. One single batch of solution from the ninth RFSA campaign, dissolved in January and February of this year, and two batches from the tenth campaign, dissolved in February, have been successfully processed. Following dissolution in Tank 6.4D, chloride was precipitated with mercurous ion added as the nitrate. The precipitate, Hg{sub 2}Cl{sub 2}, was concurrently removed with the gelatin floc via centrifugation. For each of these three batches processed, a set of duplicate samples was obtained from Tank 11.2 or from Tank 13.3, containing the head end product. The samples were preanalyzed by Laboratories Department for density and acidity to ensure them to be representative of the tank`s contents prior to chloride analysis by the Separations Technology Laboratory. Previous work indicated that in order to protect downstream canyon equipment from chloride attack, the chloride content of RFSA solutions should be less than 100 ppm. All batches from these two RFSA campaigns meet this criterion.

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6 p.

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OSTI as DE98007421

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  • Other Information: PBD: 8 Mar 1988

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  • Other: DE98007421
  • Report No.: DPSPU--88-272-33
  • Grant Number: AC09-89SR18035;AC09-76SR00001
  • DOI: 10.2172/665992 | External Link
  • Office of Scientific & Technical Information Report Number: 665992
  • Archival Resource Key: ark:/67531/metadc710444

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  • March 8, 1988

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  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 19, 2015, 1:03 p.m.

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Holcomb, H.P. Chloride content of dissolver solution from Rocky Flats scrub alloy ninth and tenth campaigns following head end treatment, report, March 8, 1988; United States. (digital.library.unt.edu/ark:/67531/metadc710444/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.