The NPE gas tracer test and the development of on-site inspection techniques

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Tracer gases emplaced in or near the detonation cavity of the 1-kiloton NonProliferation Event required 1.5 and 13.5 months for sulfur hexaflouride and helium-3, respectively, to reach the surface of Rainier Mesa from an emplacement depth of 400 meters. The sites that first produced tracer gases are those located in known faults and fractures. Numerical modeling suggests that transport to the surface is accomplished within this time frame through atmospheric pumping along high permeability pathways such as fractures. The difference in travel time between the two tracers is due to differences in gas diffusivity and can also be explained by ... continued below

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9 p.

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Carrigan, C.; Heinle, R. & Zucca, J.J. April 13, 1995.

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Description

Tracer gases emplaced in or near the detonation cavity of the 1-kiloton NonProliferation Event required 1.5 and 13.5 months for sulfur hexaflouride and helium-3, respectively, to reach the surface of Rainier Mesa from an emplacement depth of 400 meters. The sites that first produced tracer gases are those located in known faults and fractures. Numerical modeling suggests that transport to the surface is accomplished within this time frame through atmospheric pumping along high permeability pathways such as fractures. The difference in travel time between the two tracers is due to differences in gas diffusivity and can also be explained by our numerical modeling.

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9 p.

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OSTI as DE95011693

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  • Other Information: PBD: 13 Apr 1995

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  • Other: DE95011693
  • Report No.: UCRL-ID--120931
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/72736 | External Link
  • Office of Scientific & Technical Information Report Number: 72736
  • Archival Resource Key: ark:/67531/metadc709213

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Office of Scientific & Technical Information Technical Reports

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  • April 13, 1995

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  • Sept. 12, 2015, 6:31 a.m.

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  • Feb. 17, 2016, 2:52 p.m.

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Carrigan, C.; Heinle, R. & Zucca, J.J. The NPE gas tracer test and the development of on-site inspection techniques, report, April 13, 1995; California. (digital.library.unt.edu/ark:/67531/metadc709213/: accessed December 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.