Gamma-ray imaging as a tool for uranium processing plants

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Gamma-radiation is frequently used as an analysis and characterization signal to monitor material in the nuclear fuel processing cycle. The selection as a diagnostic is self-evident since the radiation is ubiquitous, characteristic of the isotopes present, and sufficiently penetrating so that measurements may be made remotely. However, save through detector proximity or minimal collimation, the directional nature of the radiation is generally not used in traditional nondestructive assay (NDA) measurements. To demonstrate the additional information available, we used GRIS, the Gamma-Ray Imaging Spectrometer, at the K-25 and Portsmouth gaseous diffusion plants. In this facility, UF{sub 6} gas is enriched in ... continued below

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6 p.

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Ziock, K.P.; Madison, L. & McGinnis, B.R. August 3, 1995.

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Description

Gamma-radiation is frequently used as an analysis and characterization signal to monitor material in the nuclear fuel processing cycle. The selection as a diagnostic is self-evident since the radiation is ubiquitous, characteristic of the isotopes present, and sufficiently penetrating so that measurements may be made remotely. However, save through detector proximity or minimal collimation, the directional nature of the radiation is generally not used in traditional nondestructive assay (NDA) measurements. To demonstrate the additional information available, we used GRIS, the Gamma-Ray Imaging Spectrometer, at the K-25 and Portsmouth gaseous diffusion plants. In this facility, UF{sub 6} gas is enriched in heated equipment and piping which run inside an insulated housing. Occasionally, the process develops uranium deposits due to leakage of wet air or environmental changes within the housing that cause solidification of the process gas. When such deposits occur, traditional NDA techniques frequently require costly and time-consuming entry within the heat shielding to obtain precise information on the deposit unavailable from outside the shielding. In this paper we discuss GRIS, the gamma-ray imaging technique it uses, and present the results of measurements obtained on fuel processing equipment.

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6 p.

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OSTI as DE95017280

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  • 36. annual meeting of the Institute for Nuclear Materials Management, Palm Desert, CA (United States), 9-12 Jul 1995

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  • Other: DE95017280
  • Report No.: UCRL-JC--121598
  • Report No.: CONF-950787--80
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 102371
  • Archival Resource Key: ark:/67531/metadc624294

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

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  • August 3, 1995

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 16, 2016, 7:24 p.m.

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Ziock, K.P.; Madison, L. & McGinnis, B.R. Gamma-ray imaging as a tool for uranium processing plants, article, August 3, 1995; California. (digital.library.unt.edu/ark:/67531/metadc624294/: accessed November 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.