Bell Atlantic Liquid Nitrogen

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Michael David Jones

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Jan 14, 1999, 3:00:00 AM1/14/99
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hig...@netcom.com (John Higgins) writes:
>OK, it's like 10 degrees outside, but those ppor guys from Bell Atlantic
>are across the street, in a tunnel fixing something or other. But they
>have a giant tank of liquid nitrogen on the sidewalk. I see these things
>all over. What do they do with it? Isn't it cold enough down there today??

Cables are pressurized with nitrogen to reduce corrosion and prevent
combustion. They transport it as liquid because they can get more of
it in a tank that way.

Mike Jones | jon...@rpi.edu

It's a wierd scene. You win a few baseball games and all of a sudden
you're surrounded by reporters an TV men with cameras asking you about
Viet Nam and race relations.
- Vida Blue, 1971

John Higgins

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Jan 15, 1999, 3:00:00 AM1/15/99
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Chris Mauritz

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Jan 15, 1999, 3:00:00 AM1/15/99
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If I'm not mistaken, it's used to pressurize important fiber and cable
conduits to keep out the elements. Various alarms go off when the conduits
depressurize, alerting them to a crack/break in the system.

C

--
Christopher Mauritz
ri...@mordor.net

John Higgins

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Jan 18, 1999, 3:00:00 AM1/18/99
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Chris Mauritz (ri...@newritz.mordor.net) wrote:
: If I'm not mistaken, it's used to pressurize important fiber and cable

: conduits to keep out the elements. Various alarms go off when the conduits
: depressurize, alerting them to a crack/break in the system.

I chatted up a smoking tech today who said that they blow it down the
lines when they get wet, generally from condensation. Works for half a
block or so aparently.

danny burstein

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Jan 18, 1999, 3:00:00 AM1/18/99
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>Chris Mauritz (ri...@newritz.mordor.net) wrote:
>: If I'm not mistaken, it's used to pressurize important fiber and cable
>: conduits to keep out the elements. Various alarms go off when the conduits
>: depressurize, alerting them to a crack/break in the system.

It's a uniquely NYC problem, and we generally keep it under wraps because
the tourists, well, just wouldn't understand.

It has to do with the alligators in the sewers who sometimes get a bit
adventurous and wander out of their normal havens...
--
_____________________________________________________
Knowledge may be power, but communications is the key
dan...@panix.com
[to foil spammers, my address has been double rot-13 encoded]

Mattison

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Jan 28, 1999, 3:00:00 AM1/28/99
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'Nite'
Sometimes they ask 4 the moon & u can give them the stars.
Mattison Fitzgerald
Artist
Aster*Risk on Screen
5" x 8"
1999
http://www.rhinodev.com/M

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