[labnetwork] Liquid Nitrogen Vacuum Jacketed Line Maintenance Question

[Yakimov, Michael]

Rich,


I assume you're talking VBC system?

We have such a system for many years. Other than regular oil changes and pump service, only thing I encounter was a totally flattened viton gasket in a vacuum bellow jumper. It didn't leak, but it really looked like a washer, not as an o-ring. I am thinking about doing wholesale o-ring change on our system as such o-rings are just waiting to leak.


Thanks


Mike

_______________________


Michael Yakimov
Research Scientist

State University of NY
SUNY Polytechnic Institute
251 Fuller rd
Albany NY 12203

myakimov at sunypoly.edu
Phone:518-229-9561 cell
Phone 518-437-8609 lab




________________________________
From: labnetwork-bounces at mtl.mit.edu <labnetwork-bounces at mtl.mit.edu> on behalf of Harlan, Richard D <rharlan at purdue.edu>
Sent: Tuesday, February 16, 2021 4:30 PM
To: labnetwork at mtl.mit.edu
Subject: [labnetwork] Liquid Nitrogen Vacuum Jacketed Line Maintenance Question

Greetings All,
Our facility is now 15 years old and starting to require more preventative maintenance. The vacuum jacketed liquid nitrogen line was showing an increased leak rate for a short period of time. It has since stabilized, but has raised questions about potential leaks in the system.
Have any of your facilities experienced this type of problem and what PM's have you put in place to address the LN2 and vacuum jacketed line integrity?
Thank you in advance for the feedback.

Thanks,
Rich Harlan
Research Engineering
Birck Nanotechnology Center | Room 2287C
Office: 765.494.6697 | Email: rharlan at purdue.edu<mailto:rharlan at purdue.edu>
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