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Good Luck!</div>
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Dave<br>
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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 Joe Wilson <jwilson@jlab.org><br>
<b>Sent:</b> Wednesday, August 3, 2022 7:49 AM<br>
<b>To:</b> Esr-users@jlab.org <esr-users@jlab.org><br>
<b>Cc:</b> Will Oren <oren@jlab.org>; Shawn Frierson <frierson@jlab.org><br>
<b>Subject:</b> [Esr-users] ESR emergency repair</font>
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Hello ESR Users:</p>
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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. </p>
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Reference: CTLis 107240 ESR Cold box DP / Vacuum issue </p>
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Thanks! </p>
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<p style="margin:0px 0px 10.66px; line-height:105%"><span style="margin:0px; line-height:105%; font-family:"Times New Roman",serif; font-size:12pt">-----------------</span></p>
<p style="margin:0px"><b><span style="margin:0px; font-family:"Times New Roman",serif; font-size:12pt">Joe D. Wilson, Jr.</span></b></p>
<p style="margin:0px"><span style="margin:0px; font-family:"Times New Roman",serif; font-size:12pt">Cryogenic Operations Engineer</span></p>
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