The new seismic design guideline for nuclear power plants, which was established in September 2006 in Japan, requires the consideration of residual risk for earthquakes beyond the design base. Seismic Probabilistic Safety Assessment (PSA) is the current available method to evaluate the residual risk of the nuclear power plant. Since 2002, Japan Nuclear Energy Safety Organization (JNES) has been carrying out seismic capacity tests for several types of equipment whose malfunction would significantly affect core damage frequency. The primary purpose of those tests is to obtain seismic capacity data and use them to increase the reliability of the seismic PSA. In this study, some elastic-plastic analyses considering the dynamic buckling behavior were performed to evaluate previous seismic capacity test results. The study confirmed that response displacement, residual deformation of the elephant-foot bulge (EFB) and local strain of tank after the EFB occurred could be evaluated analytically. Besides, a 3D FEM elastic-plastic buckling analysis using kinematic hardening law could simulate the behavior in the early stage of the dynamic buckling. In addition to those analyses, dynamic response reduction factor (Ds) of the actual material tanks, and influence of different materials on the energy absorption and seismic capacity were evaluated by using previous seismic capacity tests results.
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ASME 2009 Pressure Vessels and Piping Conference
July 26–30, 2009
Prague, Czech Republic
Conference Sponsors:
- Pressure Vessels and Piping
ISBN:
978-0-7918-4371-0
PROCEEDINGS PAPER
The Ultimate Strength of Cylindrical Liquid Storage Tanks Under Earthquakes: Evaluation of Dynamic Buckling Behavior of Tanks Used in PWR Plants
Toru Iijima,
Toru Iijima
Japan Nuclear Energy Safety Organization (JNES), Tokyo, Japan
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Kenichi Suzuki,
Kenichi Suzuki
Japan Nuclear Energy Safety Organization (JNES), Tokyo, Japan
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Hideyuki Morita,
Hideyuki Morita
Mitsubishi Heavy Industries, Ltd., Hyogo, Japan
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Koichi Tai
Koichi Tai
Mitsubishi Heavy Industries, Ltd., Hyogo, Japan
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Toru Iijima
Japan Nuclear Energy Safety Organization (JNES), Tokyo, Japan
Kenichi Suzuki
Japan Nuclear Energy Safety Organization (JNES), Tokyo, Japan
Hideyuki Morita
Mitsubishi Heavy Industries, Ltd., Hyogo, Japan
Koichi Tai
Mitsubishi Heavy Industries, Ltd., Hyogo, Japan
Paper No:
PVP2009-77065, pp. 309-317; 9 pages
Published Online:
July 9, 2010
Citation
Iijima, T, Suzuki, K, Morita, H, & Tai, K. "The Ultimate Strength of Cylindrical Liquid Storage Tanks Under Earthquakes: Evaluation of Dynamic Buckling Behavior of Tanks Used in PWR Plants." Proceedings of the ASME 2009 Pressure Vessels and Piping Conference. Volume 8: Seismic Engineering. Prague, Czech Republic. July 26–30, 2009. pp. 309-317. ASME. https://doi.org/10.1115/PVP2009-77065
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