Preclosure safety analysis for a prospective Yucca Mountain conceptual design repository

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A preliminary probabilistic risk assessment was performed for the prospective Yucca Mountain conceptual design repository. A new methodology to quantify radioactive source terms was developed and applied in the analysis. The study identified 42 event trees comprising 278 accident scenarios. The maximum offsite dose evaluated in this study is about 1000 mrem. For the majority of the accident scenarios, either the offsite dose is less than 100 mrem or the probability of occurrence is less than 1 {times} 10{sup {minus}9}/yr. Only 11 accident scenarios with a dose larger than 100 mrem and an associated probability greater than 1 {times} 10{sup ... continued below

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11 p.

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Ma, C.W. & Jardine, L.J. December 1, 1989.

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  • Ma, C.W. Bechtel National, Inc., San Francisco, CA (USA)
  • Jardine, L.J. Lawrence Livermore National Lab., CA (USA)

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Description

A preliminary probabilistic risk assessment was performed for the prospective Yucca Mountain conceptual design repository. A new methodology to quantify radioactive source terms was developed and applied in the analysis. The study identified 42 event trees comprising 278 accident scenarios. The maximum offsite dose evaluated in this study is about 1000 mrem. For the majority of the accident scenarios, either the offsite dose is less than 100 mrem or the probability of occurrence is less than 1 {times} 10{sup {minus}9}/yr. Only 11 accident scenarios with a dose larger than 100 mrem and an associated probability greater than 1 {times} 10{sup {minus}9}/yr were identified. A more detailed follow-on analysis for seismic events of various severity was also performed, and similar results were obtained. Therefore, based on the results of this analysis, no significant risk to the general public was identified during the preclosure period for the conceptual repository design. 13 refs., 4 figs., 2 tabs.

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11 p.

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INIS; OSTI as DE90015613

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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: DE90015613
  • Report No.: UCRL--102115
  • Report No.: CONF-900406--72
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 137793
  • Archival Resource Key: ark:/67531/metadc618635

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  • December 1, 1989

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 17, 2016, 3:32 p.m.

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Ma, C.W. & Jardine, L.J. Preclosure safety analysis for a prospective Yucca Mountain conceptual design repository, article, December 1, 1989; California. (digital.library.unt.edu/ark:/67531/metadc618635/: accessed December 11, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.