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Post-Closure Performance Assessment for Deep Borehole Disposal of Cs/Sr Capsules

Author

Listed:
  • Geoff A. Freeze

    (Sandia National Laboratories, Albuquerque, NM 87185, USA)

  • Emily Stein

    (Sandia National Laboratories, Albuquerque, NM 87185, USA)

  • Patrick V. Brady

    (Sandia National Laboratories, Albuquerque, NM 87185, USA)

Abstract

Post-closure performance assessment (PA) calculations suggest that deep borehole disposal of cesium (Cs)/strontium (Sr) capsules, a U.S. Department of Energy (DOE) waste form (WF), is safe, resulting in no releases to the biosphere over 10,000,000 years when the waste is placed in a 3–5 km deep waste disposal zone. The same is true when a hypothetical breach of a stuck waste package (WP) is assumed to occur at much shallower depths penetrated by through-going fractures. Cs and Sr retardation in the host rock is a key control over movement. Calculated borehole performance would be even stronger if credit was taken for the presence of the WP.

Suggested Citation

  • Geoff A. Freeze & Emily Stein & Patrick V. Brady, 2019. "Post-Closure Performance Assessment for Deep Borehole Disposal of Cs/Sr Capsules," Energies, MDPI, vol. 12(10), pages 1-15, May.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:10:p:1980-:d:233716
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    References listed on IDEAS

    as
    1. Neil A. Chapman, 2019. "Who Might Be Interested in a Deep Borehole Disposal Facility for Their Radioactive Waste?," Energies, MDPI, vol. 12(8), pages 1-13, April.
    2. G. Holland & B. Sherwood Lollar & L. Li & G. Lacrampe-Couloume & G. F. Slater & C. J. Ballentine, 2013. "Deep fracture fluids isolated in the crust since the Precambrian era," Nature, Nature, vol. 497(7449), pages 357-360, May.
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    Cited by:

    1. Dirk Mallants & Karl Travis & Neil Chapman & Patrick V. Brady & Hefin Griffiths, 2020. "The State of the Science and Technology in Deep Borehole Disposal of Nuclear Waste," Energies, MDPI, vol. 13(4), pages 1-7, February.
    2. Geoff A. Freeze & Emily Stein & Patrick V. Brady & Carlos Lopez & David Sassani & Karl Travis & Fergus Gibb & John Beswick, 2019. "Deep Borehole Disposal Safety Case," Energies, MDPI, vol. 12(11), pages 1-21, June.
    3. Guido Bracke & Wolfram Kudla & Tino Rosenzweig, 2019. "Status of Deep Borehole Disposal of High-Level Radioactive Waste in Germany," Energies, MDPI, vol. 12(13), pages 1-15, July.

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