동흡진기를 사용한 원전 배관계 내진성능 상향에 대한 연구 = A Study on Seismic Performance Improvement of Nuclear Piping System through Dynamic Absorber

다국어 초록 (Multilingual Abstract)

In this study, the dynamic absorber and the damper are applied to improve the seismic performance of the piping system, and their quantitative effects on the piping system performance are examined. For this purpose, the response performances of piping system applied with the dynamic absorber/damper are compared with those of the original piping system. Firstly, the frequency response analyses of the piping system with the presence or the absence of dynamic absorber/damper are performed and these results are compared. It has been shown that the maximum acceleration response per the frequency of the piping system is considerably reduced by installing the dynamic absorber and the damper. Secondly, the seismic responses of the piping systems with and without dynamic absorber/damper are compared. As a result of the numerical analyses, it is confirmed that key responses are reduced by 17%-63% due to the installation of the dynamic absorber and damper. Finally, as a result of the seismic performance evaluation, it is confirmed that the HCLPF (High Confidence of Low Probability of Failure) seismic performances are increased by 1.22 to 2.70 times with respect to the failure modes with an aid of the dynamic absorber and damper.

참고문헌 (Reference)

1 곽신영, "동흡진기를 사용한 원전 배관계 내진성능 상향에 대한 연구" 한국압력기기공학회 14 (14): 41-48, 2018

2 EPRI, "Methodology for Developing Seismic Fragilities" 1994

3 "KBC 2016, 건축구조기준"

4 Bezler, P, "Dynamic Analysis Independent Support Motion Response Spectrum Method, Vol. II" U.S. Nuclear Regulatory Commission 1985

5 Kwag, S, "Bayesian-based seismic margin assessment approach: Application to research reactor" 12 (12): 653-663, 2017

6 Kwag, S, "A Study on Application of Tuned Mass Damper to Piping System under Earthquake" 2018