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Akademický článek

Shaking table test and numerical analysis of nuclear piping under low- and high-frequency earthquake motions

Autor: Shinyoung Kwag, Seunghyun Eem, Jinsung Kwak, Hwanho Lee, Jinho Oh, Gyeong-Hoi Koo, Sungjin Chang, Bubgyu Jeon

Publikováno v: Nuclear Engineering and Technology, Vol 54, Iss 9, Pp 3361-3379 (2022)

A nuclear power plant (NPP) piping is designed against low-frequency earthquakes. However, earthquakes that can occur at NPP sites in the eastern part of the United States, northern Europe, and Korea are high-frequency earthquakes. Therefore, this st

Externí odkaz: https://doaj.org/article/7ef883ec061f4845a9c7b74cccf7649e

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Akademický článek

Improvement on optimal design of dynamic absorber for enhancing seismic performance of nuclear piping using adaptive Kriging method

Autor: Shinyoung Kwag, Seunghyun Eem, Jinsung Kwak, Hwanho Lee, Jinho Oh, Gyeong-Hoi Koo

Publikováno v: Nuclear Engineering and Technology, Vol 54, Iss 5, Pp 1712-1725 (2022)

For improving the seismic performance of the nuclear power plant (NPP) piping system, attempts have been made to apply a dynamic absorber (DA). However, the current piping DA design method is limited because it cannot provide the globally optimum val

Externí odkaz: https://doaj.org/article/bf0e9e1c3cb947ea9511c324675c4e17

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Akademický článek

Mitigation of seismic responses of actual nuclear piping by a newly developed tuned mass damper device

Autor: Shinyoung Kwag, Seunghyun Eem, Jinsung Kwak, Hwanho Lee, Jinho Oh, Gyeong-Hoi Koo

Publikováno v: Nuclear Engineering and Technology, Vol 53, Iss 8, Pp 2728-2745 (2021)

The purpose of this study is to reduce seismic responses of an actual nuclear piping system using a tuned mass damper (TMD) device. A numerical piping model was developed and validated based on shaking table test results with actual nuclear piping. A

Externí odkaz: https://doaj.org/article/6d65cc2c374d48898fd06e0e2376ce9e

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Akademický článek

Enhancement in the Seismic Performance of a Nuclear Piping System using Multiple Tuned Mass Dampers

Autor: Shinyoung Kwag, Jinsung Kwak, Hwanho Lee, Jinho Oh, Gyeong-Hoi Koo

Publikováno v: Energies, Vol 12, Iss 11, p 2077 (2019)

In a nuclear power plant, it is essential to improve the seismic safety of the piping system for the coolant transfer to cool the high temperature caused by the nuclear reaction. Under this background, this study makes two major contributions. The fi

Externí odkaz: https://doaj.org/article/864022ed4826493da2542cc88b27185c

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