A gas-flow source term from a nuclear waste container in an unsaturated medium

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The potential nuclear waste repository at Yucca Mountain is to be in partially saturated rock. Released radioactive gases would have a direct pathway to the biosphere. The entry of air into spent fuel would promote the oxidation of uranium matrix to more soluble forms. For licensing, the waste package must provide for substantially complete containment of radionuclides, including gases, for 300 to 1000 years. For safety assessment, a gaseous source term is needed. Thus it is important to study gas flow into and out of nuclear waste containers. This paper presents some initial analyses of gas flow into and out ... continued below

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Pages: (11 p)

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Zwahlen, E.D.; Pigford, T.H.; Chambre, P.L. & Lee, W.W.L. August 1, 1989.

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Description

The potential nuclear waste repository at Yucca Mountain is to be in partially saturated rock. Released radioactive gases would have a direct pathway to the biosphere. The entry of air into spent fuel would promote the oxidation of uranium matrix to more soluble forms. For licensing, the waste package must provide for substantially complete containment of radionuclides, including gases, for 300 to 1000 years. For safety assessment, a gaseous source term is needed. Thus it is important to study gas flow into and out of nuclear waste containers. This paper presents some initial analyses of gas flow into and out of nuclear waste containers, through holes of specified timing and sizes. Also, we predict the release rate of selected volatile species. We investigate the effect of initial temperature and pressure of the container gas and consider the definition of container failure proposed in the Site Characterization Plan.

Physical Description

Pages: (11 p)

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OSTI; NTIS; INIS; GPO Dep.

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  • 1. international topical meeting on high-level radioactive waste management, Las Vegas, NV (United States), 8-12 Apr 1990

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  • Other: DE92010304
  • Report No.: LBL-27734
  • Report No.: CONF-900406--89
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 5649575
  • Archival Resource Key: ark:/67531/metadc1093476

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  • August 1, 1989

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • April 25, 2018, 6:02 p.m.

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Zwahlen, E.D.; Pigford, T.H.; Chambre, P.L. & Lee, W.W.L. A gas-flow source term from a nuclear waste container in an unsaturated medium, article, August 1, 1989; [Berkeley,] California. (digital.library.unt.edu/ark:/67531/metadc1093476/: accessed December 9, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.