several episodes that began as early as Salado time and recurred in later Permian, Triassic, and Cenozoic times. Natural dissolution of salt occurred in the vicinity of the Wink Sink in. The original cavity developed in the Permian Salado Formation salt beds more than 400 m (1,300 ft) below ground level. The Wink Sink, in Winkler County, Texas, is a collapse feature that formed in June 1980 when an underground dissolution cavity migrated upward by successive roof failures until it breached the land surface. The remaining accident simulation used actual plant data. The initial Browns Ferry fire data were produced by performing a MAAP run to simulate the accident. To perform this benchmark, a simulated set of plant data was constructed based on actual report data containing the information necessary to initialize MARS and keep track of plant system status throughout the accident progression. MARS uses a limited set of plant data to initialize and track the accidnt progression. The MRS software uses the Modular Accident Analysis Program (MAAP) code as its basis to calculate plant response under accident conditions. with the available reactor pressure vessel (RPV) pressure and level data from the Browns Ferry fire. To demonstrate the reliability of the MARS code in simulatng a plant transient, MARS is being benchmarked. The MAAP Accident Response System (MARS) is a userfriendly computer software developed to provide management and engineering staff with the most needed insights, during actual or simulated accidents, of the current and future conditions of the plant based on current plant data and its trends.

Finally, the power failures would be causative of the fire accident. The deteriorated arresters could lead power failures, such as line to ground fault by a thermal runaway resulting from the increases in leakage current even in a nominal power system voltage. However, the arresters are deteriorated by commercial overvoltages and/or lightning one. ZnO arresters are widely used to protect DC electric traction vehicles against overvoltages caused by lightning or switching surges. vehicles be assumed that electric sparks had been produced between the pantagraph and the power line conductor by repetitively making contact and separation, maybe if some material like branches get in between connecting rod it makes progress line to ground fault. From analysis results, the cause of fire on power line turned out line to ground fault between a feeder of electric power services(pantagraph) and DC electric traction vehicle roof.

We investigated fire scene of power line for DC electric traction vehicles. This paper describes a cause of fire accidents on power system fire DC electric traction vehicles.

Jack by Liesl Shurtliff