SEISMIC SHUTOFF CHARACTERISTICS OF INTELLIGENT GAS METERS BASED ON SHAKING TABLE TESTS AND ACTUAL EARTHQUAKE DATA

Abstract

Intelligent gas meters that stop gas supply during an earthquake are deployed for individual customers in the area where Tokyo Gas Co., Ltd. provides the service. However, there still remains unclear points in the seismic shutoff characteristics of gas meters. In this study, to reveal the shutoff characteristics under seismic motion, shaking table tests were conducted. In addition that, the relationship between the earthquake motion and gas meters' shutoff rate was investigated using about 200,000 monitored archive data that shows the shutoff situations under actual seismic motions.