Seismic Fragility Evaluation of Main Steam Piping of Isolated APR1400 NPP Considering the Actual Failure Mode

Bub-Gyu Jeon, Sung-Wan Kim, Da-Woon Yun, Daegi Hahm and Seunghyun Eem
Additional contact information
Bub-Gyu Jeon: Seismic Research and Test Center, Pusan National University, Yangsan-si 50612, Korea
Sung-Wan Kim: Seismic Research and Test Center, Pusan National University, Yangsan-si 50612, Korea
Da-Woon Yun: Seismic Research and Test Center, Pusan National University, Yangsan-si 50612, Korea
Daegi Hahm: Advanced Structures and Seismic Safety Research Division, Korea Atomic Energy Research Institute, Daejeon 37224, Korea
Seunghyun Eem: Department of Convergence & Fusion System Engineering, Kyungpook National University, Sangju 41566, Korea

Sustainability, 2022, vol. 14, issue 14, 1-15

Abstract: An isolation system installed in a nuclear power plant (NPP) could increase seismic safety during seismic events. On the other hand, a more significant relative displacement may occur due to the isolation system. The seismic risk could be increased in the case of an interface piping system that connects isolated and nonisolated structures. Therefore, it is necessary to consider the piping systems when evaluating the safety of isolated-NPPs. This study performed seismic fragility analysis with isolated APR1400 nuclear power plants with the main steam piping. The main steam piping is the interface pipe connecting the isolated auxiliary building and the turbine building. The failure mode for seismic fragility analysis was defined as cracks caused by leakage. The experimental and numerical analysis results quantified the leak-through crack point as a damage index. The seismic fragility curves are suggested based on peak ground acceleration and the relative displacement between the isolated and nonisolated buildings.

Keywords: base isolation; interface pipe; fragility analysis; seismic performance (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/2071-1050/14/14/8315/pdf (application/pdf)
https://www.mdpi.com/2071-1050/14/14/8315/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:14:y:2022:i:14:p:8315-:d:857634

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().