Demands placed on waste package performance testing and modeling by some general results on reliability analysis

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Waste packages for a US nuclear waste repository are required to provide reasonable assurance of maintaining substantially complete containment of radionuclides for 300 to 1000 years after closure. The waiting time to failure for complex failure processes affecting engineered or manufactured systems is often found to be an exponentially-distributed random variable. Assuming that this simple distribution can be used to describe the behavior of a hypothetical single barrier waste package, calculations presented in this paper show that the mean time to failure (the only parameter needed to completely specify an exponential distribution) would have to be more than 10{sub 7} ... continued below

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10 p.

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Chesnut, D.A. September 1, 1991.

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Waste packages for a US nuclear waste repository are required to provide reasonable assurance of maintaining substantially complete containment of radionuclides for 300 to 1000 years after closure. The waiting time to failure for complex failure processes affecting engineered or manufactured systems is often found to be an exponentially-distributed random variable. Assuming that this simple distribution can be used to describe the behavior of a hypothetical single barrier waste package, calculations presented in this paper show that the mean time to failure (the only parameter needed to completely specify an exponential distribution) would have to be more than 10{sub 7} years in order to provide reasonable assurance of meeting this requirement. With two independent barriers, each would need to have a mean time to failure of only 10{sup 5} years to provide the same reliability. Other examples illustrate how multiple barriers can provide a strategy for not only achieving but demonstrating regulatory compliance.

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10 p.

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INIS; OSTI as DE92016156

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  • Focus `91: nuclear waste packaging, Las Vegas, NV (United States), 29 Sep - 4 Oct 1991

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  • Other: DE92016156
  • Report No.: UCRL-JC--106758
  • Report No.: CONF-910945--15
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 140750
  • Archival Resource Key: ark:/67531/metadc628039

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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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  • September 1, 1991

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 18, 2016, 12:20 p.m.

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Chesnut, D.A. Demands placed on waste package performance testing and modeling by some general results on reliability analysis, article, September 1, 1991; California. (digital.library.unt.edu/ark:/67531/metadc628039/: accessed April 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.