North American Network Operators Group
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RE: If you were in a government Cyber-warning center

  • From: Randy Neals
  • Date: Sat Apr 27 00:08:09 2002 
>Conduit? What's THAT ;-? Only exposed (bridge crossing, etc)
>parts are in conduit.


Conduit is typically used along the entire length of most railway builds I
have seen.

Most recent railway builds have been multi conduit projects with up to 12 x
1.5 inch HDPE conduits plowed in by rail mounted cable plow. Your correct
that steel conduit is used at bridge crossing or other exposed locations.

I understand that when railway routes became popular some years ago for
telecom that some railway/telecom companies did some research to understand
where to place the cable with respect to the rail to minimize damage in a
derailment.

Apparently by placing the conduit 3-4' down and relatively close to the rail
(ie: 2-3' from the rail) the steel rail will act somewhat as a shield to
minimize exposure of the cable in a derailment. (ie: the car has to rip up
the trackage and move the dirt to get to the cable)

-Randy