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rob, Sun 1 Apr 2001, 1:00)
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It's used a lot in food packaging IIRC(, Fri 11 Jun 2010, 14:57, 2 replies, latest was 16 years ago)
It isI think I'm right in saying that gaseous nitrogen is less of a problem, say, if you have a leaking cylinder, because it won't expand that much when released. Liquid nitrogen, on the other hand, expands to something like 700 times its volume when it boils, which is why it drives all the oxygen out of the room. And all the while, you don't feel a thing, apparently.
(, Fri 11 Jun 2010, 14:59, Reply)
Depends on how big the leak isIf there's enough escaping, it'll displace the air. Remember a new cylinder is at 230 bar, so will produce 230 times its own volume when it's at 1 atmosphere, or thereabouts.
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K2k6 has a proper job these days, Fri 11 Jun 2010, 15:00,
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In small quantities, and its not like you are inside a bag of crispy salad.I've seen it used to purge gas pipelines, and they clear the site while it goes on.
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Bartleby A dead man on vacation, Fri 11 Jun 2010, 15:01,
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How can you be sure he's not inside a bag of crispy salad?He might like it in there.
(, Fri 11 Jun 2010, 15:05, Reply)
So how do frogs sometimes survive in those packs?(
Naked Ape call me Caitlyn, Fri 11 Jun 2010, 15:08,
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Their lungs don't need oxygendue to all of the Gauloises
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K2k6 has a proper job these days, Fri 11 Jun 2010, 15:10,
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I suspected as muchbut written down, it could easily be mistaken for a donkey braying
(, Fri 11 Jun 2010, 15:16, Reply)
That's less to do with the nitrogen itselfand more to do with the hazards of pressurised gas tanks and the original contents of the pipe systems having to be vented/ flared etc.
Crashingly dull post, sorry.
(, Sun 13 Jun 2010, 21:42, Reply)
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