FIRE SAFETY CHARACTERISTICS OF INTERIOR MATERIALS OF KOREAN RAILWAY VEHICLES

초록

We compared the previous Korean fire safety regulation for the interior finishing materials of subway vehicles with those of advanced railway countries to establish new effective testing methods and material requirement levels of Korea subway vehicles. Materials satisfying the Korean Standard (KS) and Korea Railroad Standard (KRS) were used for the vehicle. We carried out fire tests of the interior finishing materials. ASTM E 662, ISO 4589-2, ISO 5658-2, BS 6853 Annex B.2 and ISO 5660-2 tests methods were applied. From the fire testing results, we could assess the fire safety of our railway vehicles. To know what causes the fire to grow so fast, we also simulated the fire performance of the vehicle based on the data of specimen tests. Our simulation is different from others in the view of using the real data for input. The conditions of the simulation were set to be same as the real state of the fire accident in Daegu. From the result of the simulation, we found out the car burned out unbelievably fast. We also investigate the fire characteristics of some other materials for the enhancement of fire safety of new Korean subway vehicle, and compared with those of used materials. At the fire performance simulation of the new vehicle made of new materials, the fire stops by itself in a few minutes. We could compare the fire safety of the existing vehicle and the modified vehicle.