Comparison of Dynamic Characteristics of Fukushima Nuclear Power Plant Containment Building Determined From Tests and Earthquakes (NUREG/CR-4432, ANL-85-67)

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Publication Information

Manuscript Completed: September 1985
Date Published: October 1985

Prepared by:
M.G. Srinivasan, C.A. Kot, and B.J. Hsieh

Argonne National Laboratory
9700 South Cass Avenue
Argonne, IL 60439

NRC Job Code A2217

Prepared for:
Division of Engineering Technology
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington DC 20555-0001

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Abstract

Modal parameters determined from response measured in dynamic tests and from analytical models for Simulating the tests and two subsequent earthquakes experienced by the containment building of Unit 1 of the Fukushima Power Station complex in Japan are compared for the purpose of evaluating the effectiveness of the dynamic tests in earthquake response prediction. The tests are found to have led to the correct identification of a fundamental frequency. The lack of agreement between test- and earthquake-determined modeshapes and damping is attributable more to the shortcomings of the simulation models than to differences in actual behavior.