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Hi All,</div>
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Please check your systems to verify that they stay above 1 atmosphere to ensure that no lines are plugged due to moisture condensing from back flowing vent lines.</div>
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Brendan,</div>
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Do you know when the last time the O-rings at the N2 vent check valves at ESR were replaced? Might this be a maintenance item to put on a schedule?</div>
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Dave</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Esr-users <esr-users-bounces@jlab.org> on behalf of Brendan White via Esr-users <esr-users@jlab.org><br>
<b>Sent:</b> Wednesday, September 18, 2024 11:57 AM<br>
<b>To:</b> esr-users@jlab.org <esr-users@jlab.org><br>
<b>Subject:</b> [Esr-users] Nitrogen Supply Shutoff Friday 9-20-24</font>
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<p class="x_MsoNormal">Good morning,</p>
<p class="x_MsoNormal">At 0830 on Friday, 9-20-24, Cryo will be tying in the new nitrogen dewar via u-tubes. The nitrogen to ESR and the halls will be shut off for about 30 minutes during this operation. If there are any issues regarding this plan, please email
me.</p>
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<p class="x_MsoNormal">Brendan White</p>
<p class="x_MsoNormal">Cryogenics Electrical Engineer</p>
<p class="x_MsoNormal">Thomas Jefferson National Accelerator Facility</p>
<p class="x_MsoNormal">(757) 269-6070</p>
<p class="x_MsoNormal">brendanw@jlab.org</p>
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