In 2016, an earthquake occurred at Gyeongju, Korea. At the Wolsong site, the observed peak ground acceleration was lower than the operating basis earthquake (OBE) level of Wolsong nuclear power plant. However, the measured spectral acceleration value exceeded the spectral acceleration of the operating-basis earthquake (OBE) level in some sections of the response spectrum, resulting in a manual shutdown of the nuclear power plant. Analysis of the response spectra shape of the Gyeongju earthquake motion showed that the high-frequency components are stronger than the response spectra shape used in nuclear power plant design. Therefore, the seismic performance evaluation of structures and equipment of nuclear power plants should be made to reflect the characteristics of site-specific earthquakes. In general, the floor response spectrum shape at the installation site or the generalized response spectrum shape is used for the seismic performance evaluation of structures and equipment. In this study, a generalized response spectrum shape is proposed for seismic performance evaluation of structures and equipment for nuclear power plants. The proposed response spectrum shape reflects the characteristics of earthquake motion in Korea through earthquake hazard analysis, and it can be applied to structures and equipment at various locations.

A B S T R A C T
1. 서 론
2. 확률론적 지진재해도 평가
3. 원자력발전소의 지진응답해석
    3.1 입력지진
    3.2 원자력발전소의 지진응답해석
4. 한계성능평가를 위한 응답스펙트럼 형상
5. 결 론
REFERENCES

• 임승현(경북대학교 융복합시스템공학부 플랜트시스템전공) | Eem Seung-Hyun (Major in Plant System Engineering, School of Convergence & Fusion System Engineering, Kyungpook National University) Corresponding author
• 최인길(한국원자력연구원 기계‧구조안전연구부) | Choi In-Kil (Mechanical and Structural Safety Research Division, Korea Atomic Energy Research Institute)