The performance assessment impacts of disposal of high-moisture, low-level radioactive waste at the Nevada Test Site

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A panel of independent scientists was convened by the Department of Energy to assess the performance impacts of disposal of low-level radioactive waste from the Fernald Environmental Management Project. This waste stream was involved in a transportation incident in December 1997. A resulting outgrowth of investigations of the transportation incident was the recognition that the waste was transported and disposed in stress-fractured metal boxes and some of the waste contained excess moisture (high volumetric water contents). The panel was charged with determining whether disposal of this waste in the Area 5 radioactive waste management site on the Nevada Test Site ... continued below

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16 p.

Creation Information

Crowe, B.M.; Hansen, W.; Hechnova, A.; Jacobson, R.; Voss, C.; Waters, R. et al. March 1, 1999.

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  • Crowe, B.M.
  • Hansen, W. Los Alamos National Lab., NM (United States)
  • Hechnova, A. Univ. of Nevada, Las Vegas, NV (United States). Harry Reid Center of Environmental Studies
  • Jacobson, R. Desert Research Inst., Reno, NV (United States)
  • Voss, C. Golder Associates, Inc. (United States)
  • Waters, R. Sandia National Labs., Albuquerque, NM (United States)
  • Sully, M.
  • Levitt, D. Bechtel Nevada, Las Vegas, NV (United States)

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Description

A panel of independent scientists was convened by the Department of Energy to assess the performance impacts of disposal of low-level radioactive waste from the Fernald Environmental Management Project. This waste stream was involved in a transportation incident in December 1997. A resulting outgrowth of investigations of the transportation incident was the recognition that the waste was transported and disposed in stress-fractured metal boxes and some of the waste contained excess moisture (high volumetric water contents). The panel was charged with determining whether disposal of this waste in the Area 5 radioactive waste management site on the Nevada Test Site has impacted the conclusions of the completed performance assessment. Three questions were developed by the panel to assess performance impacts: (1) the performance impacts of reduced container integrity, (2) the impact of reduced container integrity on subsidence of waste in the disposal pits and (3) the performance impacts of excess moisture. No performance or subsidence impacts were noted from disposal of the Fernald waste. The impacts of excess moisture were assessed through simulation modeling of the movement of moisture in the vadose zone assuming high water contents (wet waste) for different percentages of the waste inventory. No performance impacts were noted for either the base-case scenario (ambient conditions) or a scenario involving subsidence and flooding of the waste cells. The absence of performance impacts results form the extreme conservatism used in the Area 5-performance assessment and the robust nature of the disposal site.

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16 p.

Notes

INIS; OSTI as DE99001992

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  • Waste management `99 symposium, Tucson, AZ (United States), 28 Feb - 4 Mar 1999

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  • Other: DE99001992
  • Report No.: LA-UR--99-284
  • Report No.: CONF-990201--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 329492
  • Archival Resource Key: ark:/67531/metadc682727

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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.

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Creation Date

  • March 1, 1999

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • May 20, 2016, 1:40 p.m.

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Crowe, B.M.; Hansen, W.; Hechnova, A.; Jacobson, R.; Voss, C.; Waters, R. et al. The performance assessment impacts of disposal of high-moisture, low-level radioactive waste at the Nevada Test Site, article, March 1, 1999; New Mexico. (digital.library.unt.edu/ark:/67531/metadc682727/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.