Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
권호 표지
DOI QR코드

DOI QR Code

Study on the Performance Improvement of an EQS Device Applied Nuclear Power Plant

원전 EQS 면진장치의 성능개선을 위한 연구

  • Received : 2014.06.24
  • Accepted : 2014.08.11
  • Published : 2015.01.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents the performance improvement of an EQS (Eradic Quake System) device applied to a nuclear power plant. For the nuclear facility, the EQS device needs to be ensured to have high quality, flexibility of design and reliability. To improve the reliability of the design, the hysteresis of the device must be exactly predicted. The friction coefficient of PTFE (PolyTetraFluoroEthylene) and the stiffness of the MER-Spring are considered as the factors influencing the hysteresis curve. In this paper, those factors are analysed to predict the behavior of the device and to improve the equipment of the EQS device. The results of the improved EQS device have been verified via a tests to be comparable with the predicted results. The estimation results indicate that considering those factors is more appropriate than the results of the previous design and method.

Keywords

References

  1. Nam HW. Status of Domestic and Global earthquake 2012. Korea Meteorological Administration Press Release; c2012.
  2. Choi IG. Safety of Nuclear Power Plant for Earthquake. Korea Atomic Energy Research Institute.
  3. Kim SH. Base Isolation Device for Preventing Earthquake-Device. v 13. Korea Society of Seismic isolation and Vibration Control;. c2011.
  4. Ha JJ. Niigata Earthquake and Seismic design of Nuclear power plant. Korea Atomic Energy Research Institute.
  5. Park HG, Lee YI, Jung DY. Experimental and Analytical Study on Dynamic Behavior of Polyurethane Spring Restroing Disk Bearing. Proceddings of Earthquake Engineering Society of korea. 2011; 15(2):61-69.
  6. Dolce M , Cardone D, a nd C roatto F . Frictional b ehavior o f steel-PTFE interfaces for seismic isolation. Bulletin of earthquake ngineering. 2005;3(1):75-99. https://doi.org/10.1007/s10518-005-0187-9
  7. Lee YI, Ji YS, Han WJ, Kim KI, Lee HP, Cho MS. Analysis for Dynamic Non-Linear characteristics of Polyurethane Spring Restoring Disk Bearing Using Matlab. Proceedings of Computational Structural Engineering institute of Korea; p.118-121.
  8. Biswas S.K and Vijayan K. Friction and wear of PTFE-a review. An international journal on the science and technology of friction, lubrication and wear. 1992;158(1):193-211.
  9. Shim HH, Kwon OK. Friction and Wear Characteristics of PTFEPolyimide Composite. Journal of the Korean Society of Tribologists and Lubrication Engineers. 1995;11(4):28-34.

Cited by

  1. Seismic Responses of Seismically Isolated Nuclear Power Plant Structure Considering Post-Yield Stiffness of EQS Bearing vol.20, pp.5, 2016, https://doi.org/10.5000/EESK.2016.20.5.319