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<span>Hall B's 4 atm flow was uninterrupted and our systems have recovered. </span></div>
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<div id="divRplyFwdMsg" dir="ltr"><font color="#000000" face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b> Esr-users <esr-users-bounces@jlab.org> on behalf of Jonathan Creel <creel@jlab.org><br>
<b>Sent:</b> Saturday, February 6, 2021 11:21 AM<br>
<b>To:</b> Steven Lassiter <lassiter@jlab.org>; Chris Perry <cperry@jlab.org>; esr-users@jlab.org <esr-users@jlab.org><br>
<b>Subject:</b> Re: [Esr-users] High back pressure on warm return</font>
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<div style="color:rgb(0,0,0); background-color:rgb(255,255,255)" dir="ltr">Facilities is investigating to determine what happened.</div>
<div style="color:rgb(0,0,0); background-color:rgb(255,255,255)" dir="ltr">J</div>
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<div class="x_ms-outlook-ios-signature">Get <a href="https://aka.ms/o0ukef">Outlook for iOS</a></div>
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<div id="x_divRplyFwdMsg" dir="ltr"><font color="#000000" face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b> Esr-users <esr-users-bounces@jlab.org> on behalf of Steven Lassiter <lassiter@jlab.org><br>
<b>Sent:</b> Saturday, February 6, 2021 11:20:37 AM<br>
<b>To:</b> Chris Perry <cperry@jlab.org>; esr-users@jlab.org <esr-users@jlab.org><br>
<b>Subject:</b> Re: [Esr-users] High back pressure on warm return</font>
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looks likes it happened twice</div>
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Not too bad on the back pressure</div>
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Steven</div>
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<div id="x_x_divRplyFwdMsg" dir="ltr"><font color="#000000" face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b> Esr-users <esr-users-bounces@jlab.org> on behalf of Chris Perry <cperry@jlab.org><br>
<b>Sent:</b> Saturday, February 6, 2021 10:59 AM<br>
<b>To:</b> esr-users@jlab.org <esr-users@jlab.org><br>
<b>Subject:</b> [Esr-users] High back pressure on warm return</font>
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At about 7:13 am, the ESR Instrument Air compressors tripped off, this led to the depressurization of the air system and caused PV60DLP to go to its failed closed position, this shut off the flow path to recovery from warm return, causing the halls to pressurize.
Warm return has been switched to the ESR main compressor suction which allows an open path to recovery suction. We will stay in this configuration until the air compressor issue has been remedied.</div>
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-Chris Perry<br>
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