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<p style="margin-top:0;margin-bottom:0">good work pablo.</p>
<p style="margin-top:0;margin-bottom:0">thank you for the detailed explanation.</p>
<p style="margin-top:0;margin-bottom:0">amrit<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Dsg-hallb_magnets <dsg-hallb_magnets-bounces@jlab.org> on behalf of Pablo Campero <campero@jlab.org><br>
<b>Sent:</b> Wednesday, December 5, 2018 9:58:46 AM<br>
<b>To:</b> dsg-hallb magnets<br>
<b>Subject:</b> [Dsg-hallb_magnets] Solenoid MPS water flow operations</font>
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<div style="font-family:georgia,serif; font-size:12pt; color:#000000">
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<div>Dear Dr. Rossi,</div>
<br>
<div>With regards to the safety operation concerns/questions with the Solenoid MPS, after investigations I can mention the following:</div>
<br>
<div><strong>1.</strong> Recommended water supply flows and <span style="color:rgb(0,0,0); font-family:georgia,serif; font-size:16px; font-style:normal; font-variant-ligatures:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; orphans:2; text-align:start; text-indent:0px; text-transform:none; white-space:normal; widows:2; word-spacing:0px; background-color:rgb(255,255,255); text-decoration-style:initial; text-decoration-color:initial; display:inline!important; float:none">ÄP</span>
by Danfysik are:</div>
<div> <strong>1.1. </strong>Flow has to be < 180 [l/min] At ÄP<span style="font-size:10pt"> (Sup-Ret)</span> = 6 [Bar].</div>
<div> <strong>1.2. </strong>Flow has to be < 115 [l/min] at <span style="color:rgb(0,0,0); font-family:georgia,serif; font-size:16px; font-style:normal; font-variant-ligatures:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; orphans:2; text-align:start; text-indent:0px; text-transform:none; white-space:normal; widows:2; word-spacing:0px; background-color:rgb(255,255,255); text-decoration-style:initial; text-decoration-color:initial; display:inline!important; float:none">ÄP
<span style="font-size:10pt">(Sup-Ret)</span> = 3 [Bar].</span></div>
<br>
<div><strong>2.</strong> Danfysik performed a pressure test for the Solenoid MPS water cooling system at 31 [Bar] for 1 [min], during factory acceptance test protocol on 14/04/2015.</div>
<br>
<div><strong>3.</strong> The max absolute pressure rated by Danfysik = 12 [Bar].</div>
<br>
<div><strong>4.</strong> The table below shows a summary of the values for MPS internal flows recommended and the actual flows as of now:<br>
</div>
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<table cellpadding="3px" border="1px" style="width:479px; table-layout:fixed">
<tbody>
<tr>
<td style="text-align:left">
<div><strong><br>
</strong></div>
<div><strong>Flow Switch </strong></div>
<div><strong><br>
</strong></div>
</td>
<td style="text-align:left"><strong>Flow Transmitter Dynamic Range [l/min]</strong></td>
<td style="text-align:left"><strong>Recommended Flows by Danfysik [l/min]</strong></td>
<td style="text-align:left"><strong>Measured Flows [l/min]</strong></td>
</tr>
<tr>
<td>FSW1</td>
<td style="text-align:center"> 1-80</td>
<td style="text-align:center">50</td>
<td style="text-align:center">67</td>
</tr>
<tr>
<td>FSW2</td>
<td style="text-align:center"> 1-15</td>
<td style="text-align:center">8.22</td>
<td style="text-align:center">8.5</td>
</tr>
<tr>
<td>FSW3 </td>
<td style="text-align:center"> 1-80</td>
<td style="text-align:center">50</td>
<td style="text-align:center">71.87</td>
</tr>
<tr>
<td>FSW4</td>
<td style="text-align:center"> 1-15</td>
<td style="text-align:center">1.45</td>
<td style="text-align:center">1.65</td>
</tr>
<tr>
<td>FSW5</td>
<td style="text-align:center"> 1-15</td>
<td style="text-align:center">1.45</td>
<td style="text-align:center">1.55</td>
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<td><span style="font-size:10pt"><span style="color:rgb(0,0,255)">Total Flow </span></span></td>
<td style="text-align:center">--</td>
<td style="text-align:center"><span style="font-size:10pt"><span style="color:rgb(0,0,255)">111.12</span></span></td>
<td style="text-align:center"><span style="font-size:10pt"><span style="color:rgb(0,0,255)">150.57</span></span></td>
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</table>
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<br>
<div>Since actual measured supply flow is <strong>150.57 [l/min] </strong>at<strong> </strong><span style="color:#000000; font-family:georgia,serif; font-size:16px; font-style:normal; font-variant-ligatures:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; orphans:2; text-align:start; text-indent:0px; text-transform:none; white-space:normal; widows:2; word-spacing:0px; background-color:#ffffff; text-decoration-style:initial; text-decoration-color:initial; display:inline!important; float:none"><strong>ÄP
<span style="font-size:10pt">(Sup-Ret)</span> = 5.17 [Bar] </strong></span>within the recommended operational values, <span style="color:#000000; font-family:georgia,serif; font-size:16px; font-style:normal; font-variant-ligatures:normal; font-variant-caps:normal; font-weight:400; letter-spacing:normal; orphans:2; text-align:start; text-indent:0px; text-transform:none; white-space:normal; widows:2; word-spacing:0px; background-color:#ffffff; text-decoration-style:initial; text-decoration-color:initial; display:inline!important; float:none">we
can say that </span>the MPS water cooling pressure and flow are safe. </div>
<div>The MPS will not be damaged.</div>
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<br>
<br>
<div>Best Regards,<br>
</div>
<div>Pablo</div>
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