Unnamed Administration sources reported that Chris Kilbourn said: > > > In the past few years on NANOG, I've noticed a strong correlation between > train derailments and network outages. (Not to discount the backhoe > correlation in any way of course...) > > The question I have is this: > > If fiber runs are trenched into the railbed, and we know that trains > go off of the tracks every now and then, what, if anything, is being > done to harden the conduit?
Conduit? What's THAT ;-? Only exposed (bridge crossing, etc) parts are in conduit. > Would trenching it deeper help? Has encasing the conduit in a > steel-reinforced channel been examined? Or is there something about > laying conduit next to track and the accident modalities that I am > just missing here? A) There's limited right-of-way. Who are you already next to? ATT? MCI? Sprint? B) There's limited ACCESS to A). You either must shutdown the rail line or follow a rigorous safety program to ensure you don't have a piece of whatever sticking out across the track when that train goes by. C) How deep do you want it? ATT put their #5 TCC cable down 4'; no easy task. {But then, we paid for it...}. Will that help when a locomotive lands on it? If it doesn't... it's much harder to fix. D) There's limited money. -- A host is a host from coast to [EMAIL PROTECTED] & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433