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JDR Vol.5 No.4 pp. 395-406
(2010)
doi: 10.20965/jdr.2010.p0395

Paper:

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Adjusting Fragility Analysis to Seismic Hazard Input

Jens-Uwe Klügel*, Richard Attinger*, and Shobha Rao**

*NPP Goesgen-Daeniken, CH 4658 Daeniken, Kraftwerkstrasse, Switzerland

**ABSG Consulting Inc., 300 Commerce Drive, Suite 200 Irvine, California 92602, U.S.A

Received:
March 15, 2010
Accepted:
May 20, 2010
Published:
August 1, 2010
Creative Commons License
Keywords:
seismic probabilistic risk assessment, probabilistic seismic hazard analysis
Abstract
This paper shows that the results of contemporary probabilistic seismic hazard analysis (PSHA), uniform hazard spectra, and hazard curves are inconsistent with the fragilitymethod used for seismic probabilistic risk assessment (PRA). The calculation used in PSHA is based on the evaluation of the probability of exceeding specified acceleration levels without considering the damaging effects of earthquakes. Empirical fragility of structures and components derived from field observations or qualification tests is conditioned to model large earthquakes, so fragility analysis must be adjusted to correspond with PSHA hazard estimates. Adjustment based on energy absorption principles is presented in the sections that follow, andmacroseismic information from intensity is used for verification. The procedure suggested was applied in seismic probabilistic risk assessment for the Goesgen, Switzerland, nuclear power plant (NPP).
Cite this article as:
J. Klügel, R. Attinger, and S. Rao, “Adjusting Fragility Analysis to Seismic Hazard Input,” J. Disaster Res., Vol.5 No.4, pp. 395-406, 2010.
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