Evaluation of the post-emplacement environment of high level radioactive waste packages at Yucca Mountain, Nevada

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Evaluation of the post-emplacement environment around high level radioactive waste containers is required by federal regulations. The information derived from this evaluation will be used to determine the service performance of the waste containers, the chemical and hydrological conditions that may influence radionuclide release and transport if containers are breached, and retrievability of the waste containers prior to closure of the repository. Laboratory studies, numerical simulations, and field experiments and tests are used to provide data necessary for this evaluation. Results obtained to date demonstrate that the post-emplacement environment in the welded tuff at Yucca Mountain, Nevada maintains relatively benign ... continued below

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16 p.

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Glassley, W. March 1989.

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Description

Evaluation of the post-emplacement environment around high level radioactive waste containers is required by federal regulations. The information derived from this evaluation will be used to determine the service performance of the waste containers, the chemical and hydrological conditions that may influence radionuclide release and transport if containers are breached, and retrievability of the waste containers prior to closure of the repository. Laboratory studies, numerical simulations, and field experiments and tests are used to provide data necessary for this evaluation. Results obtained to date demonstrate that the post-emplacement environment in the welded tuff at Yucca Mountain, Nevada maintains relatively benign chemical features (i.e., near neutral pH, low concentrations of dissolved species) for most scenarios. The hydrological environment appears to be one of low flow volume and rates for the expected condition of an unsaturated medium. Emplacement borehole stability will be a function of fracture density and orientation, which may be influenced by microcrack development. Field studies and numerical simulations are in progress that will extend the results of laboratory studies to long time periods. The extent to which chemical, hydrological and mechanical processes can be adequately coupled through numerical simulations remains a matter of concern. 18 refs., 4 figs., 1 tab.

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16 p.

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INIS; OSTI as DE90002816

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  • Waste management `89, Tucson, AZ (United States), 1 Mar 1989

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  • Other: DE90002816
  • Report No.: UCRL--100603
  • Report No.: CONF-8903112--5
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 137551
  • Archival Resource Key: ark:/67531/metadc623124

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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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  • March 1989

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  • June 16, 2015, 7:43 a.m.

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  • April 11, 2016, 2:11 p.m.

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Glassley, W. Evaluation of the post-emplacement environment of high level radioactive waste packages at Yucca Mountain, Nevada, article, March 1989; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc623124/: accessed December 9, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.