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http://dx.doi.org/10.5000/EESK.2012.16.3.035

Uniform Hazard Spectrum Evaluation Method for Nuclear Power Plants on Soil Sites based on the Hazard Spectra of Bedrock Sites  

Hahm, Dae-Gi (한국원자력연구원)
Seo, Jeong-Moon (한국원자력연구원)
Choi, In-Kil (한국원자력연구원)
Rhee, Hyun-Me (한국원자력연구원)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.16, no.3, 2012 , pp. 35-42 More about this Journal
Abstract
We propose a probabilistic method to evaluate the uniform hazard spectra (UHS) of the soil of nuclear power plant(NPP) sites corresponding to that of a bedrock site. To do this, amplification factors on the surface of soil sites were estimated through site response analysis while considering the uncertainty in the earthquake ground motion and soil deposit characteristics. The amplification factors were calculated by regression analysis with spectral acceleration because these two factors are mostly correlated. The proposed method was applied to the evaluation of UHS for the KNGR (Korean Next Generation Reactor) and the APR1400 (Advanced Power Reactor 1400) nuclear power plant sites of B1, B4, C1 and C3. The most dominant frequency range with respect to the annual frequency of earthquakes was evaluated from the UHS analysis. It can be expected that the proposed method will improve the results of integrated risk assessments of NPPs rationally. We expect also that the proposed method will be applied to the evaluation of the UHS and of many other kinds of soil sites.
Keywords
Uniform hazard spectrum; Probabilistic seismic hazard assessment; Uncertainty; Site response analysis; Nuclear power plant sites;
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