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Mitigation of Sliding Motion of a Cask-Canister by Fluid-Structure Interaction in an Annular Region

[+] Author Affiliations
Tomohiro Ito, Yoshihiro Fujiwara, Atsuhiko Shintani, Chihiro Nakagawa, Kazuhisa Furuta

Osaka Prefecture University, Sakai, Osaka, Japan

Paper No. ICEM2011-59208, pp. 1151-1157; 7 pages
  • ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management
  • ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management, Parts A and B
  • Reims, France, September 25–29, 2011
  • Conference Sponsors: Nuclear Engineering Division and Environmental Engineering Division
  • ISBN: 978-0-7918-5498-3
  • Copyright © 2011 by ASME


The cask-canister system is a coaxial circular cylindrical structure in which several spent fuels are installed. This system is a free-standing structure thus, it is very important to reduce sliding motion for very large seismic excitations. In this study, we propose a mitigation method for sliding motion. Water is installed in an annular region between a cask and a canister. The equations of motion are derived taking fluid-structure interaction into consideration for nonlinear sliding motion analyses. Based on these equations, mitigation effects of sliding motions are studied analytically. Furthermore, a fundamental test model of a cask-canister system is fabricated and shaking table tests are conducted. From the analytical and test results, sliding motion mitigation effects are investigated.

Copyright © 2011 by ASME



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