Abstract
This report is a summary of an earthquake measurement result at July 23, 2005, and disaster activity that used the record of this result. We understood little damage, based on forecasting pipeline-damage. Because we collected an earthquake measurement result from 3, 800 seismograph arranged in metropolitan area. Moreover we forecasted the number of telephone-call about the Intelligent gas-meter, then we set up the system for prevention of secondary disaster and assembled the necessary personnel.