Fire Safety Science Digital Archive

Full-scale fire suppression tests of an indoor-power-transformer are carried out with water mist systems in view of fire extinguishment. Fire incidents are carefully investigated with the analysis of cause in order to make the most realistic test procedures. Based on that, six fire test scenarios are built. All the tests are performed with two kinds of water mist systems, the low and high pressure system. Test results show dramatic difference in oxygen decrease between both systems. In general the high pressure system demonstrates obviously the better performance in fire extinguishments.