RESULTS OF THE EXAMINATION OF ELECTROCHEMICAL NOISE PROBE SPECIMENS REMOVED FROM TANK 241-AN-107 JUNE 2010

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An Integrated Multi-function Corrosion Probe (IMCP) was installed in Tank 241-AN-107 on September 20, 2006. A portion of the probe was retrieved on June 8, 2010 and the sections holding the detectors were delivered to the 222-S Laboratory for analysis. The examination and disassembly of the probe sections encountered a number of challenges. However, disassembly and relevant analyses were successfully completed. The following summarizes our observations. Brittle failure of the fiberglass probe in the middle of detector 2 resulted in the recovery of only three vapor space C-rings and six supernatant bullet specimens. The design of the bullets and how ... continued below

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GA, COOKE; RB, WYRWAS & JB, DUNCAN November 11, 2010.

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  • Hanford Site (Wash.)
    Publisher Info: Hanford Site (HNF), Richland, WA (United States))
    Place of Publication: Richland, Washington

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Description

An Integrated Multi-function Corrosion Probe (IMCP) was installed in Tank 241-AN-107 on September 20, 2006. A portion of the probe was retrieved on June 8, 2010 and the sections holding the detectors were delivered to the 222-S Laboratory for analysis. The examination and disassembly of the probe sections encountered a number of challenges. However, disassembly and relevant analyses were successfully completed. The following summarizes our observations. Brittle failure of the fiberglass probe in the middle of detector 2 resulted in the recovery of only three vapor space C-rings and six supernatant bullet specimens. The design of the bullets and how they were attached to the probe made the recovery of the components more difficult. The use of glue/epoxy on the bullets and the attachment of the flat bottom of the bullets to the curved surface of the fiberglass probe body meant that weight loss on cleaning and surface area of the specimens could not be determined with acceptable accuracy. Macrophotography of all specimens reveals that corrosion was slight in the vapor space and extremely slight in the supernatant. The one pre-cracked C-ring recovered from the vapor space still had the stress bulge visible on the polished surface, indicating that crack propagation had not occurred in the tank. No photographs were taken of the C-ring before deployment. No further analysis was conducted on this specimen. A detailed discussion and photographic documentation are provided in this report.

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  • Report No.: LAB-RPT-10-00011 Rev 0
  • Grant Number: DE-AC27-08RV14800
  • DOI: 10.2172/1000336 | External Link
  • Office of Scientific & Technical Information Report Number: 1000336
  • Archival Resource Key: ark:/67531/metadc845764

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  • November 11, 2010

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Sept. 1, 2016, 1:28 p.m.

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GA, COOKE; RB, WYRWAS & JB, DUNCAN. RESULTS OF THE EXAMINATION OF ELECTROCHEMICAL NOISE PROBE SPECIMENS REMOVED FROM TANK 241-AN-107 JUNE 2010, report, November 11, 2010; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc845764/: accessed November 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.