Experimental Study on Seismic Reduction Effectiveness of Main Control Room in N.P.P using 3-Directional Isolation System

摘要

The main control room of a nuclear power plant operates many important NPP facilities such as NSSS, so it is highly recommended to secure seismic safety of main control room during and after earthquakes. A number of isolation systems installed between equipment and foundation have been widely studied. In this study, 3-Directional isolation systems was used which are consist of a FPS(Friction Pendulum System), an air spring and a viscous damper. A FPS is resistant to horizontal motion and an air spring is resistant to vertical motion and a viscous damper is resistant to rocking motion and excessive displacement. In this study, two types of main control floor systems were taken into account and a number of shaking table tests with or without isolation system were conducted to evaluate 3D isolation reduction effectiveness.