Alpha contamination assessment for D&D activities: Monitoring pipe interiors

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Description

We have developed a prototype instrument capable of assessing alpha-emitting contamination on interior surfaces of ducts, pipes, tanks, and other enclosed volumes without inserting a probe. Air is drawn through the potentially contaminated volume and then through a detection grid, where ions created in the air by alpha particles are collected and the resulting charge measured with a sensitive electrometer. A filter at the intake end of the contaminated volume excludes externally created ions, so only ions generated inside the volume are detected. We have studied the response of this prototype in initial experiments using calibrated alpha sources with various ... continued below

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11 p.

Creation Information

Rawool-Sullivan, M.W.; Conaway, J.G.; MacArthur, D.W. & Vaccarella, J. February 1, 1996.

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Description

We have developed a prototype instrument capable of assessing alpha-emitting contamination on interior surfaces of ducts, pipes, tanks, and other enclosed volumes without inserting a probe. Air is drawn through the potentially contaminated volume and then through a detection grid, where ions created in the air by alpha particles are collected and the resulting charge measured with a sensitive electrometer. A filter at the intake end of the contaminated volume excludes externally created ions, so only ions generated inside the volume are detected. We have studied the response of this prototype in initial experiments using calibrated alpha sources with various pipe diameters and configurations, air flows, and source locations in the pipes. The results of these experiments indicate that this method can be an effective approach to assessing internal contamination.

Physical Description

11 p.

Notes

INIS; OSTI as DE96006237

Source

  • Other Information: PBD: Feb 1996

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  • Other: DE96006237
  • Report No.: LA--13063-MS
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/219422 | External Link
  • Office of Scientific & Technical Information Report Number: 219422
  • Archival Resource Key: ark:/67531/metadc672555

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • February 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Feb. 29, 2016, 8:23 p.m.

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Rawool-Sullivan, M.W.; Conaway, J.G.; MacArthur, D.W. & Vaccarella, J. Alpha contamination assessment for D&D activities: Monitoring pipe interiors, report, February 1, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc672555/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.