The effect of power transmission network on fire risk analysis of buried fuel pipelines

Since the behavior of buried fuel pipelines are complicated against the potential earthquakes there would be high possibility of direct and indirect losses in those networks. Therefore، seismic performance analysis of buried pipelines، which are amongst the main infrastructures and lifelines in urban areas، is of great importance. In this respect،Kermanshahcity، with three buried fuel pipelines، is selected as the case study and the probable seismic damages to its buried pipelines are analyzed by using a program posted to GIS software. The program automatically calculated the regional seismicity parameters (PGA and PGV)، the number of leaks and failures، number of ignition، area that can be affected by fire and explosion، total population at risk، and the number of units at risk of explosion after earthquake. Using the mentioned program، risk map of the area in connection with three kinds of failures in suspending power lines under two scenarios were analyzed and the results were compared with each other in both quantitative and graphic manners. In the risk map، impacts of the electrical power network were found quite evident and responsible for the amount of the damages. According to the results، by retrofitting the power network، the number of ignition on the fuel pipelines ofKermanshahcan be reduced from 21 to 2 in scenario 1 and from 2 to zero in scenario 2.