Re: Disaster plans

rolf tschudin (tschudin@nih.gov)
Mon, 02 Feb 1998 10:04:29 -0500

At 11:59 AM 2/2/98 +0000, you wrote:
>Hi,
>
>On one occasion we had a blocked Liquid Nitrogen vent and it was
>recommended that we blow room temperature nitrogen gas (analaytical
>grade as used for routine filling) into the vent to melt the ice. It
>worked.

Snip,

Take a 2 ft length of copper, aluminum or brass rod, 1/4 " dia.
Attach a solid hoseclamp to the middle. Hold one end, heat the other
with a heat gun. Push the heated end into the port that's blocked.
(The hoseclamp prevents it from going too far or falling into the
magnet.)

Cheers Rolf

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Rolf Tschudin Tel. 1 301 496 2692
National Institutes of Health Fax 1 301 496 0825
Bldg. 5, Room B2-29
Bethesda MD 20892-0505 e-mail: tschudin@nih.gov
USA Compuserve: 71543,751
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