Seismic margins assessment of the plutonium processing facility Los Alamos National Laboratory

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Results of the recently completed seismic evaluation at the Los Alamos National Laboratory site indicate a need to consider seismic loads greater than design basis for many structures systems and components (SSCs). DOE Order 5480.28 requires that existing SSCs be evaluated to determine their ability to withstand the effects of earthquakes when changes in the understanding of this hazard results in greater loads. In preparation for the implementation of DOE Order 5480.28 and to support the update of the facility Safety Analysis Report, a seismic margin assessment of SSCs necessary for a monitored passive safe shutdown of the Plutonium Processing ... continued below

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12 p.

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Goen, L.K. & Salmon, M.W. December 1, 1995.

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  • Goen, L.K. Los Alamos National Lab., NM (United States)
  • Salmon, M.W. EQE International, Irwine, CA (United States)

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Description

Results of the recently completed seismic evaluation at the Los Alamos National Laboratory site indicate a need to consider seismic loads greater than design basis for many structures systems and components (SSCs). DOE Order 5480.28 requires that existing SSCs be evaluated to determine their ability to withstand the effects of earthquakes when changes in the understanding of this hazard results in greater loads. In preparation for the implementation of DOE Order 5480.28 and to support the update of the facility Safety Analysis Report, a seismic margin assessment of SSCs necessary for a monitored passive safe shutdown of the Plutonium Processing Facility (PF-4) was performed. The seismic margin methodology is given in EPRI NP-6041-SL, ``A Methodology for Assessment of Nuclear Power Plant Seismic Margin (Revision 1)``. In this methodology, high confidence of low probability of failure (HCLPF) capacities for SSCs are estimated in a deterministic manner. For comparison to the performance goals given in DOE Order 5480.28, the results of the seismic margins assessment were used to estimate the annual probability of failure for the evaluated SSCs. In general, the results show that the capacity for the SSCs comprising PF-4 is high. This is to be expected for a newer facility as PF-4 was designed in the early 1970`s. The methodology and results of this study are presented in this paper.

Physical Description

12 p.

Notes

INIS; OSTI as DE96003148

Source

  • 5. Department of Energy (DOE) natural phenomena hazards mitigation symposium, Denver, CO (United States), 13-17 Nov 1995

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  • Other: DE96003148
  • Report No.: LA-UR--95-40027
  • Report No.: CONF-9511128--11
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 148690
  • Archival Resource Key: ark:/67531/metadc622000

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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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  • December 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Feb. 29, 2016, 7:25 p.m.

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Goen, L.K. & Salmon, M.W. Seismic margins assessment of the plutonium processing facility Los Alamos National Laboratory, article, December 1, 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc622000/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.