A Study on Seismic Intensity Index Used for Shutdown Trigger Level and Location of Seismometer

—A Study for Petroleum Refinery Facility—

Abstract

Concerning a petroleum refinery facility which consists of various structures, the shutdown trigger level should be evaluated by seismic intensity index correlated with actual facility damage. In addition, it is necessary to decide where to place seismometers in the site of facility. The optimal index and place are detected by the investigation of correlation between ground motion and response of structures according to various seismic waves. The above mentioned correlation is reflected in the seismic loss based on the probabilistic methodology. The shutdown trigger level is evaluated, comparing seismic loss between with shutdown and without one.