FPS로 면진된 원전 주제어실의 내진 성능 평가

Seismic Performance Evaluation for MCR of Nuclear Power Plant Isolated by FPS

The objective of this study is to investigate the seismic performance for a seismically isolated main control room (MCR) of nuclear power plant. MCR was isolated by spherically shaped friction pendulum system (FPS). The FPS provided the simplest means of achieving long period in the isolation system under low gravity load. Some parametric studies were conducted with different properties of FPS. When the coefficient of friction in the sliding surface of FPS is low, the seismic performance of MCR was satisfactory However, the lateral displacement in the isolation level was rather large. To restrict this displacement into adequate range, a fluid viscous dampers were used.