Abstract
One of the safety measures to prevent possible post earthquake natural gas fires in Turkey is the use of gas shut-off valves in residential buildings. In this paper shake table tests on gas shut-off valves produced in Turkey were conducted to investigate the suitability of using the American standard ASCE25-06 gas actuation limits in the Turkish standard (TS12884). Furthermore as a part of the pipeline network health monitoring project for Istanbul gas distribution company IGDAS; a full scale natural gas district regulator controlled by SI intelligent sensor was tested under strong ground motions to examine its seismic performance. Results indicate that more than 50% of the valves actuate below the lower limits specified by ASCE25-06 .This may increase gas service costs even after small earthquakes. Furthermore results shows that the soil type conditions play an important role in specifying the upper limits of gas auction. At the end of tests even the regulator was tested under strong ground motions, its main system survived with no damage at all. Lastly; tests shows that the intelligent sensor is a vital device for gas safety.
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