[Esr-users] ESR emergency repair

[David Kashy]

Good Luck!
Dave
________________________________
From: Esr-users <esr-users-bounces at jlab.org> on behalf of Joe Wilson <jwilson at jlab.org>
Sent: Wednesday, August 3, 2022 7:49 AM
To: Esr-users at jlab.org <esr-users at jlab.org>
Cc: Will Oren <oren at jlab.org>; Shawn Frierson <frierson at jlab.org>
Subject: [Esr-users] ESR emergency repair


Hello ESR Users:

We (Cryo) need to take action to prevent an uncontrolled extended shutdown of ESR in the middle of the night or on a weekend. On 3Aug22, we need to investigate a potential problem with the diffusion pump (DP) that maintains the insulating vacuum for ESR Cold Box. The risk is not zero to ESR operations. We have no choice but to investigate before further degradation in ESR DP performance.



Reference: CTLis 107240 ESR Cold box DP / Vacuum issue

Thanks!



-----------------

Joe D. Wilson, Jr.

Cryogenic Operations Engineer




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