原文传递
Federal Railroad Administration, Office of Safety Headquarters Assigned Accident Investigation Report HQ-2006-25: Union Pacific (UP), Elm Creek, Nebraska, April 27, 2006.
| 题名： | Federal Railroad Administration, Office of Safety Headquarters Assigned Accident Investigation Report HQ-2006-25: Union Pacific (UP), Elm Creek, Nebraska, April 27, 2006. |
| 关键词： | *Accident-investigations; *Railroad-trains; *Railroad-passenger-service; *Nebraska-.;Commuter-transportation; Derailment-. |
| 摘要： | On April 27, 2006, at 4:45 a.m. central daylight time (CDT), eastward UP loaded unit coal Train Symbol 3 CNANW 25, consisting of two Head-end locomotives and one distributed power (DPU) locomotive on the rear of the train, 134 loaded coal cars, and operating at a recorded speed of 37 mph (maximum authorized timetable speed is 70 mph with a restriction for loaded coal trains of 50 mph) derailed the two Head-end locomotives and 29 cars beginning with the first head car through the 29th head car. The method of operation is by a traffic control system (TCS) supplemented by automatic cab signal (ACS) on triple main track. All three main tracks were blocked during clean-up. The incident occurred at Simonds, Nebraska, a station location about 4 miles west of Elm Creek, Nebraska, in Dawson County at milepost 208.2 on the UP's Kearney Subdivision of the North Platte Service Unit . The train was traveling eastward on main Track No. 3 and negotiating through a No. 20 left hand turnout from main Track No. 3 crossing over to main Track No. 2 when the derailment occurred. The weather conditions at the time of the derailment were clear, dark and the temperature was about 43 degrees FDG. Damages are estimated at $2.8 million. The two member train crew under went toxicology testing under FRA post accident testing requirements. There were no injuries reported and no hazardous materials were released from the rail equipment; however, the derailment caused a gas leak in an underground line that provides natural gas to local switch heaters. The supply valve to the gas line was closed, stopping the gas flow and no injuries resulted from the leak. In the area of the incident, the railroad is triple main track with a minus 0.13 percent grade at milepost 209.8 ascending to a plus 0.34 percent grade in a eastward direction at milepost 209.1. Through the area of the derailment and continuing eastward, the grade is relatively level gradually descending to a plus 0.28 percent grade at milepost 207.4. The track is tangent constructed with concrete crossties placed on 24-inch centers. The rail is 133-lbs continuous welded rail. The probable cause of the derailment was determined to be, loose or missing bolts securing the short point of the moveable point frog. The preliminary findings identified the point of the derailment at a moveable point frog at milepost 208.2 at the west end turnout from main Track No. 3 crossing over to main Track No. 2. The short point of the moveable point frog on the south rail apparently opened due to broken or loose securement bolts allowing the lead locomotive to climb and split the switch. |
| 报告类型： | 科技报告 |
相关文献
- Federal Railroad Administration, Office of Safety Headquarters Assigned Accident Investigation Report HQ-2006-75, Union Pacific, Redlands, California, August 27, 2006.
- Federal Railroad Administration, Office of Safety Headquarters Assigned Accident Investigation Report HQ-2006-19, Union Pacific, Higginson, Arizona, April 5, 2006.
- Federal Railroad Administration, Office of Safety Headquarters Assigned Accident Investigation Report HQ-2006-38, Union Pacific (UP), San Antonio, Texas, May 27, 2006.
- Federal Railroad Administration, Office of Safety Headquarters Assigned Accident Investigation Report HQ-2006-67, Union Pacific (UP), Champlin, Utah, July 27, 2006.
- Federal Railroad Administration, Office of Safety Headquarters Assigned Accident Investigation Report HQ-2006-69, Union Pacific, Chiloquin, Oregon, July 27, 2006.
- Federal Railroad Administration, Office of Safety Headquarters Assigned Accident Investigation Report HQ-2006-33, Union Pacific (UP), Queen Creek, Arizona, May 22, 2006.
检索历史
应用推荐
