Advertisement

Reliability Data Required for a Seismic Risk Assessment

  • J. E. Wells

Abstract

The seismic risk methodology developed in the Seismic Safety Margins Research Program (SSMRP) [1] was demonstrated by its application to the Zion nuclear power plant [2], a pressurized water reactor (PWR). A detailed model of Zion, including plant logic models (initiating events, events trees, and fault trees), SSI and structure models, and piping models, was developed and analyzed. At the request of the U.S. Nuclear Regulatory Commission, the Lawrence Livermore National Laboratory (LLNL) developed a simplified seismic risk assessment methodology [3]. The purpose of this methodology is to reduce cost while adequately assessing the seismic risk from a nuclear power plant. The simplified methodology was used to assess the seismic risk from the Zion nuclear power plant. These results were then compared with the results from the detailed analysis. It was found that the simplified method generally provides more conservative results than the detailed one. To demonstrate its applicability, and to provide a basis of comparison of seismic risk between a PWR and a BWR when analyzed with comparable methodology and assumptions, a seismic risk analysis is being performed on the LaSalle County Station nuclear power plant.

Keywords

Seismic Response Seismic Risk Fragility Curve Fault Tree Lawrence Livermore National Laboratory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Smith, P. D., R. D. Dong, D. L. Bernreuter, M. P. Bohn, T. Y. Chuang, G. E. Cummings, J. J. Johnson, R. W. Mensing, and J. E. Wells, “Seismic Safety-Margins Research-Phase I Final Report”, Lawrence Livermore National Laboratory, Livermore, California, UCRL-53021, NUREG/CR-2015, 1981–84.Google Scholar
  2. [2]
    Bohn, M. P., L. C. Shieh, J. E. Wells, L. C. Cover, D. L. Bernreuter, J. C. Chen, J. J. Johnson, S. E. Bumpus, R. W. Mensing, W. J. O’Connell, and D. A. Lappa, “Applications of the SSMRP Methodology to the Seismic Risk at the Zion Nuclear Power Plant”, Lawrence Livermore National Laboratory, Livermore, California, UCRL-53483, NUREG/CR-3428, 1984.Google Scholar
  3. [3]
    Shieh, L. C., J. J. Johnson, J. E. Wells, J. C.Chen, and P. D. Smith, “Simplified Seismic Probabilistic Risk Assessment: Procedures and Limitations”, Lawrence Livermore National Laboratory, Livermore, California, UCID-20468, NUREG/CR-4331, 1985.Google Scholar
  4. [4]
    Bernreuter, D. L., J. B. Savy, R. W. Mensing, J. C. Chen, and B. C. Davis, “Seismic Hazard Characterization of the Eastern United States, Vol. 1: Methodology and Results for Ten Sites and Vol 2: Questionnaires”, Lawrence Livermore National Laboratory, Livermore, California, UCID-20421, 1985.Google Scholar
  5. [5]
    “PRA Procedures Guide”, U. S. Nuclear Regulatory Commission, NUREG/CR-2300, Vol. 1, 1983.Google Scholar
  6. [6]
    Kolb, G. J., D. J. Alpert, D. L. Berry, R. G. Easterling, F. E. Haslain, J. W. Hickman, J. L. Sprung, D. W. Stack, M. W. McCann, J. W. Reed, and K. G. Murphy, “Risk Methods Integration and Evaluation Program Plan”, Sandia National Laboratories, Albuquerque, New Mexico, 1984.Google Scholar
  7. [7]
    Barlow, R. E. and Lambert, H. E., “Introduction to Fault Tree Analysis”, Reliability and Fault Tree Analysis, SIAM, Philadelphia, Pennsylvania, 1985.Google Scholar
  8. [8]
    Wells, J. E., “SEISIM: A Probabilistic Risk Assessment Tool Used in Evaluating Seismic Risk”, Proceedings of the Conference on Seismic Risk and Heavy Industrial Facilities, San Francisco, California, 1983.Google Scholar
  9. [9]
    Johnson, J. J., G. L. Goudreau, S. E. Bumpus, and O. R. Maslenikov, “SSMRP Phase I Final Report-SMACS-Seismic Methodology Analysis Chain with Statistics (Project VIII)”, Lawrence Livermore National Laboratory, Livermore, California, UCRL-53021, Vol. 9, NUREG/CR-2015, Vol. 9, 1981.Google Scholar
  10. [10]
    Johnson, J. J., R. D. Campbell, P. S. Hashimoto, O. R. Maslenikov, L. W. Tiong, “LaSalle Seismic Probabilistic Risk Assessment: Responses and Fragilities”, NTS/Structural Mechanics Associates, San Ramon, CA, NTS/SMA 12211.21 (DRAFT), October 1985.Google Scholar
  11. [11]
    Cover, L. E., M. P. Bohn, R. D. Campbell, and D. A. Wesley, “Handbook of Nuclear Power Plant Seismic Fragilities”, Lawrence Livermore National Laboratory, Livermore, California, UCRL-53455, Rev. 1, NUREG/CR-3558, 1984.Google Scholar

Copyright information

© Springer-Verlag Berlin, Heidelberg 1986

Authors and Affiliations

  • J. E. Wells
    • 1
  1. 1.Lawrence Livermore National LaboratoryLivermoreUSA

Personalised recommendations