Hi,
I loose one in about 5 years. It usually cracks full length but this
last one(red) shattered. I think that it would be smart of me to enclose
it in a plastic netting. Also seems to happen more during the summer.
Jim
Emidio V. L. da Cunha wrote:
> Hello all,
> With the history was a bit different. It was spectacular. Although the
> tubing was not latex, but a kind of synthetic blue plastic. It
> virtualy exploded during the transfer. There was a sharp bang and
> the thing became hundred of small pieces, but we just closed the tap
> and replaced the tubing and continued the transfer. It was such a
> fright for me that was just beggining at the time.
> Best wishes,
> Emidio V. L. da Cunha
>
>
> ----- Original Message -----
> From: Guillermo Moyna <mailto:g.moyna_at_usip.edu>
> To: ammrl_at_chemnmr.colorado.edu <mailto:ammrl_at_chemnmr.colorado.edu>
> Sent: Wednesday, June 18, 2003 5:20 PM
> Subject: Anectdotal - Latex tubing crack...
>
> Howdy,
>
> This one is just an anecdote that some people may find
> interesting. Although I never heard of anyone having problems with
> latex tubing during liquid N2 transfers, I always knew that they
> could break. After more than two years of service, our latex tube
> did crack the other day. It wasn't spectacular at all when it
> happened, just a sharp 'snap!' and that's it. Since we had the
> tube covered with armaflex insulation, there was not much liquid
> N2 spewing all over the place. We just closed the N2 tap, replaced
> the tube with an identical 'new' tube that we always had as a
> backup, and kept going.
>
> What was interesting was how the tube cracked. Initially I noticed
> a longitudinal crack at the tip we plug into the magnet fill port.
> After I took it out of the armaflex, I saw that the crack went
> from end to end of the tube (almost six feet). That was pretty
> 'cool' as one of my students put it. The whole 6 foot crack
> appeared in one instant. Neat.
>
> As I said, just an anecdote for your Wednesday afternoon. I plan
> to keep using these things (covered with armaflex). $20 bucks for
> two years of service ain't bad...
>
> Guillermo
>
> +==================-------------- --- -- - - - -
> Guillermo Moyna, PhD
> Assistant Professor of Chemistry
> Department of Chemistry & Biochemistry
> University of the Sciences in Philadelphia
> 600 South 43rd Street
> Philadelphia, PA 19104-4495
>
> "The only existing things are atoms and empty space.
> All else is mere opinion" - Democritus, 370 B.C.
>
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> http://www.usip.edu/chemistry/faculty/moyna.asp
>
> - - - - -- --- -----------=================+
>
--
My primary website: http://www.uvm.edu/~jbreeyea
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Received on Fri Jun 20 2003 - 12:13:12 MST