Not Trained to Run the Train

Trains Magazine General Discussion
41

I feature running with DPU in continuous rolling terrain is akin to playing three dimensional chess. What part of the train is going upgrade, what part is going downgrade and where is the DPU in that equation an don’t forget curvature within the train can have some effects too.

42

The multi-defect type of detectors on my territories only announce an entrance message. Otherwise they only talk if a defect is detected. If one is detected, they will give a defect tone, but won’t announce the type of defect or location until the train is clear of the detector or stopped on the detector. Once clear we are to stop and inspect for the given defect. If no specific information is given, the entire train needs to be inspected.

While a hot box/hot wheel detector may send specific axle temperature information to a central office, it does not give such specifics to train crews. If the parameters to trigger a defect alert to the crew is reached, the detector does so. If the parameters aren’t reached, the detector stays silent.

We also have specific dragging equipment only detectors. These tend to be at block signal locations where concrete ties have been installed. They talk on defect only. They will give a defect tone and announce a defect and the detector’s location. All detector locations are listed in the time table. One needs to know that the defect message is for them by keeping track of what mile post they are at. An immediate stop is required for dragging equipment, using good train handling techniques. There’s a good chance that dynamics are going to be used because it’s stressed so much that dynamics are the preferred method for slowing a train. (They have backed off in recent years, realizing that in some situations air brakes are needed. In both emergency and normal train operations.) Once stopped it will give an axle count to the defect.

Jeff

43

Probably not known but what number of defects have now been found causing mitigation measures?

44

I’d imagine that some amount of defects are a daily fact of life. I wonder if anyone actually tracks that.

45

I am certain such statistics exist - on each Class 1 carrier, however, it is most likely considered proprietary information and will never see the light of day in public world.

They may get discussed in generalities in specific trade group conferences.