why does a leaking gas pipe freeze?
why does a leaking gas pipe freeze?
(OP)
I am completely new to this site, so first of all I'd like to say hi!
I am currently putting together some training information for new Engineers who have joined our valve servicing company who have little or no previous petrochemical experience.
The idea is to give them some basic information that they would not normally know so they can adapt to the new industry quickly.
One of the subjects my boss has asked me to go into is something i know very little about, he wants me to explain why leaking natural gas pipes/valves freeze.
It's something I've always accepted but never really known why. It might sound quite dumb to most people but I guess you either know or you don't....and I don't.
Cheers in advance, Matt (stiffler)
I am currently putting together some training information for new Engineers who have joined our valve servicing company who have little or no previous petrochemical experience.
The idea is to give them some basic information that they would not normally know so they can adapt to the new industry quickly.
One of the subjects my boss has asked me to go into is something i know very little about, he wants me to explain why leaking natural gas pipes/valves freeze.
It's something I've always accepted but never really known why. It might sound quite dumb to most people but I guess you either know or you don't....and I don't.
Cheers in advance, Matt (stiffler)





RE: why does a leaking gas pipe freeze?
The opposite occurs on a liquid line when a thread leak or a packing leak dribbles water from a pressurized line to atmosphere and the water evaporates leaving the dissolved solids to form a crust (and sometimes a stalactite) around the valve.
David Simpson, PE
MuleShoe Engineering
www.muleshoe-eng.com
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RE: why does a leaking gas pipe freeze?
I have seen this happen frequently with pneumatic mining drills running on air that contained water vapor. Ice would form around the drill exhaust. Mine air systems are not the driest of compressed air systems.
Ted
RE: why does a leaking gas pipe freeze?
I'd suggest looking at this thread: http://www.eng-tips.com/viewthread.cfm?qid=207371
RE: why does a leaking gas pipe freeze?
now I know its's called Adiabatic expansion I can also look at what wikipedia has to say about it.
Thanks again,
Matt
RE: why does a leaking gas pipe freeze?
So gas in a line at 1000 psig venting to atmospher will drop 7 * 1000 / 100 or 70 F.
RE: why does a leaking gas pipe freeze?
David
RE: why does a leaking gas pipe freeze?
RE: why does a leaking gas pipe freeze?