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Norfolk Southern NS 4096 GE AC44C6M
Norfolk Southern NS 4096 GE AC44C6M DC to AC Rebuilt (C40-9), NS 1844 EMD SD70ACU DC to AC Rebuilt (SD70), and NS 1068 EMD SD70ACe Erie Heritage Unit with NS 224 a daily Louisville to St. Louis train waiting on 77J a Duke Energy coal train from the Charger mine at HBD-DED Ayrshire in Winslow, Indiana to pass. After 77J clears 224 will head to Princeton for a crew change on May 1, 2021.
HBD, Hot boxes or Hot Bearing Detectors are used to measure the temperature of the journal bearings of a train. They typically consist of two infrared eyes on each side of the tracks looking up at the train's bearings. They register the radiation from every journal that passes over them. If a bearing reaches the maximum temperature for safe travel, the detector will flag and count it as a defect.
DED, A column of cones sits across the whole width of the railroad (just like a cross tie) attached to a switch. Anything dragging from the train will hit this cone, thus pushing it back, thus breaking a contact. It then returns to its normal position to prepare for anything else that might be dragging under the train. The detector will register this action and flag it as a defect. Brittle bars are still used elsewhere, but still have to be repaired. Over time, dragging equipment detector's metal flaps need to be replaced because of extensive damage to them. Single use systems typically involve a frangible engagement bar or a stainless steel wire/braid strung between the rails and typically outside the rails as well, fastened to the sleepers. If the bar or braid is hit by something, it breaks, and the circuit break alerts that there is a dragging item. Auto-resetting systems typically involve a pivot pin system to allow the target to reset itself after a hit. Wikipedia, the free encyclopedia
Norfolk Southern NS 4096 GE AC44C6M
Norfolk Southern NS 4096 GE AC44C6M DC to AC Rebuilt (C40-9), NS 1844 EMD SD70ACU DC to AC Rebuilt (SD70), and NS 1068 EMD SD70ACe Erie Heritage Unit with NS 224 a daily Louisville to St. Louis train waiting on 77J a Duke Energy coal train from the Charger mine at HBD-DED Ayrshire in Winslow, Indiana to pass. After 77J clears 224 will head to Princeton for a crew change on May 1, 2021.
HBD, Hot boxes or Hot Bearing Detectors are used to measure the temperature of the journal bearings of a train. They typically consist of two infrared eyes on each side of the tracks looking up at the train's bearings. They register the radiation from every journal that passes over them. If a bearing reaches the maximum temperature for safe travel, the detector will flag and count it as a defect.
DED, A column of cones sits across the whole width of the railroad (just like a cross tie) attached to a switch. Anything dragging from the train will hit this cone, thus pushing it back, thus breaking a contact. It then returns to its normal position to prepare for anything else that might be dragging under the train. The detector will register this action and flag it as a defect. Brittle bars are still used elsewhere, but still have to be repaired. Over time, dragging equipment detector's metal flaps need to be replaced because of extensive damage to them. Single use systems typically involve a frangible engagement bar or a stainless steel wire/braid strung between the rails and typically outside the rails as well, fastened to the sleepers. If the bar or braid is hit by something, it breaks, and the circuit break alerts that there is a dragging item. Auto-resetting systems typically involve a pivot pin system to allow the target to reset itself after a hit. Wikipedia, the free encyclopedia