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Shaking Table Tests of a Piping System With Viscoelastic Dampers Subjected to Severe Earthquake Motions

[+] Author Affiliations
Victor Kostarev, Frank Barutzki, Petr Vasilev

GERB GmbH & Co. KG, Berlin, Germany

Ichiro Tamura, Masashi Kuramasu

Chugoku Electric Power Co., Inc., Hiroshima, Japan

Yuji Enomoto

GERB Japan, Inc., Tokyo, Japan

Yoshio Namita

HITACHI, Ltd., Ibaraki, Japan

Shunsuke Okita, Yuki Sato

Hitachi-GE Nuclear Energy, Ltd., Ibaraki, Japan

Paper No. PVP2016-64004, pp. V008T08A005; 10 pages
doi:10.1115/PVP2016-64004
From:
  • ASME 2016 Pressure Vessels and Piping Conference
  • Volume 8: Seismic Engineering
  • Vancouver, British Columbia, Canada, July 17–21, 2016
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5046-6
  • Copyright © 2016 by ASME

abstract

In Shimane Nuclear Power Plant of the Chugoku Electric Power Co. located in the West Japan area, a number of safety improvements are planned to be implemented aiming at achieving the highest world level in nuclear safety. One of the new safety approaches for seismic protection of NPPs is the application of viscoelastic dampers for safety related piping, systems and components. This technology is widely spread in nuclear power since 80s of the last century, [1 and 2]. In order to investigate and check the actual behavior of viscoelastic dampers installed at piping systems and subjected to severe earthquake motions, a shaking table test with full-scale piping and viscoelastic dampers was carried out. The shaking table test was performed for two general conditions. One is without aseismic devices and the other one is with viscoelastic dampers. It was confirmed by comparing the test results of the above mentioned two conditions that viscoelastic dampers provide to piping systems very high overall damping and protect piping systems even against large earthquakes.

Copyright © 2016 by ASME

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