We are told to not use rubber for LN2 transfer because of the safety issue.
We were thinking that on the exhaust it wouldn’t shatter because it
was not under any stress. We have now proven that assumption wrong.
On Sep 3, 2024, at 12:32 PM, dennisonpr via groups.io wrote:
I used latex tubing inside foam insulation tubing. The insulation leads to
a more efficient transfer, and contains the broken latex when the tubing fails.
Phil Dennison.
On 20240903 12:01, Perry Pellechia wrote:
I have been using a stainless steel line for over 30 years without any issues.
Anyone that says rubber or plastic is better is putting their magnets safety
above their people’s safety.
Perry.
--
Perry J. Pellechia
Director of NMR Services
Research Professor
University of South Carolina
Department of Chemistry and Biochemistry
On Sep 3, 2024, at 2:44 PM, Alex Paterson via groups.io wrote:
I second the point from Gary. The wisdom I’ve received from multiple
magnet engineers is that steel reinforced nitrogen transfer lines are more
trouble than they’re worth: low risk of serious consequences.
We use natural latex rubber or Teflon tubing for all of our nitrogen transfers,
both for supply and exhaust. Yes, they wear out, but they’re inexpensive
to replace and provide a comparatively safe point of failure: moderate risk of
low consequences.
Regards,
Alex
Alexander Paterson, PhD
The National Magnetic Resonance Facility at Madison (NMRFAM)
University of Wisconsin-Madison
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Received on Tue Sep 03 2024 - 14:40:49 MST