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Sweet, Thanks.<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Marc Mcmullen <mcmullen@jlab.org><br>
<b>Sent:</b> Friday, June 19, 2020 11:29 AM<br>
<b>To:</b> Bob Miller <rmiller@jlab.org>; Brian Eng <beng@jlab.org>; Morgan Cook IV <mcookiv@jlab.org><br>
<b>Cc:</b> Denny Insley <dinsley@jlab.org>; dsg-hallb_dc@jlab.org <dsg-hallb_dc@jlab.org><br>
<b>Subject:</b> Re: DC gas mix restart</font>
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Thanks Bob<br>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Bob Miller <rmiller@jlab.org><br>
<b>Sent:</b> Friday, June 19, 2020 11:22 AM<br>
<b>To:</b> Brian Eng <beng@jlab.org>; Morgan Cook IV <mcookiv@jlab.org>; Marc Mcmullen <mcmullen@jlab.org><br>
<b>Cc:</b> Denny Insley <dinsley@jlab.org><br>
<b>Subject:</b> Re: DC gas mix restart</font>
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<p>All,</p>
<p><br>
</p>
<p>I set the rotameters in the Hall for each R3 chamber to 8 lpm and now the MFC shows it is flowing 35 lpm.</p>
<p><br>
</p>
<p>So, I don't think there is a problem, the rotameters were restricting the flow, and the MFC is probably more accurate than the rotameters.</p>
<p><br>
</p>
<p>Thanks</p>
<p>Bob<br>
</p>
<p><br>
</p>
<div class="x_x_moz-cite-prefix">On 6/18/2020 11:23 AM, Brian Eng wrote:<br>
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The R3 supply MFC started acting funny a bit before 6/14 and couldn't even maintain 12 slm prior to resumption of normal flow numbers, see attached plots.</div>
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<br>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Also, I'm not sure if that Mix #1 tank<span style="color:rgb(0,0,0); font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt"> pressure reading is to believed? Did a RV blow or was that just from switching valves around?</span></div>
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<br>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
I would disconnect the tubing directly after the R3 MFC so it's venting to the atmosphere and see if it can flow properly, that would at least let us know if the problem was downstream of the MFC or the MFC itself.</div>
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<br>
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<div id="x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Brian Eng
<a class="x_x_moz-txt-link-rfc2396E" href="mailto:beng@jlab.org"><beng@jlab.org></a><br>
<b>Sent:</b> Thursday, June 18, 2020 9:47 AM<br>
<b>To:</b> Morgan Cook IV <a class="x_x_moz-txt-link-rfc2396E" href="mailto:mcookiv@jlab.org">
<mcookiv@jlab.org></a>; Marc Mcmullen <a class="x_x_moz-txt-link-rfc2396E" href="mailto:mcmullen@jlab.org">
<mcmullen@jlab.org></a><br>
<b>Cc:</b> Denny Insley <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dinsley@jlab.org">
<dinsley@jlab.org></a>; Bob Miller <a class="x_x_moz-txt-link-rfc2396E" href="mailto:rmiller@jlab.org">
<rmiller@jlab.org></a>; <a class="x_x_moz-txt-link-abbreviated" href="mailto:dsg-hallb_dc@jlab.org">
dsg-hallb_dc@jlab.org</a> <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dsg-hallb_dc@jlab.org">
<dsg-hallb_dc@jlab.org></a><br>
<b>Subject:</b> Re: DC gas mix restart</font>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
BTW, I changed the setpoint on R3 to 20 so the Mix #1 Ar and CO2 wouldn't keep overfilling the tank as it was already at 100 psi.</div>
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<br>
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<div id="x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Brian Eng
<a class="x_x_moz-txt-link-rfc2396E" href="mailto:beng@jlab.org"><beng@jlab.org></a><br>
<b>Sent:</b> Thursday, June 18, 2020 9:41 AM<br>
<b>To:</b> Morgan Cook IV <a class="x_x_moz-txt-link-rfc2396E" href="mailto:mcookiv@jlab.org">
<mcookiv@jlab.org></a>; Marc Mcmullen <a class="x_x_moz-txt-link-rfc2396E" href="mailto:mcmullen@jlab.org">
<mcmullen@jlab.org></a><br>
<b>Cc:</b> Denny Insley <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dinsley@jlab.org">
<dinsley@jlab.org></a>; Bob Miller <a class="x_x_moz-txt-link-rfc2396E" href="mailto:rmiller@jlab.org">
<rmiller@jlab.org></a>; <a class="x_x_moz-txt-link-abbreviated" href="mailto:dsg-hallb_dc@jlab.org">
dsg-hallb_dc@jlab.org</a> <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dsg-hallb_dc@jlab.org">
<dsg-hallb_dc@jlab.org></a><br>
<b>Subject:</b> Re: DC gas mix restart</font>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
The MFCs needed to be reinitialized after pulling the power on the MFC (that's all the big connector is used for). So now the cRIO is communicating with the MFC again.</div>
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<br>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
It still only has ~20 slm flowing through it though when set to 36. However, when I changed the setpoint to 6 it flowed that just fine. So I don't think it is the MFC itself.</div>
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<br>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Is there a valve somewhere that didn't get opened up all the way? Is the supply pressure to the MFC high enough?</div>
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<br>
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<div id="x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Morgan Cook IV
<a class="x_x_moz-txt-link-rfc2396E" href="mailto:mcookiv@jlab.org"><mcookiv@jlab.org></a><br>
<b>Sent:</b> Thursday, June 18, 2020 9:03 AM<br>
<b>To:</b> Brian Eng <a class="x_x_moz-txt-link-rfc2396E" href="mailto:beng@jlab.org">
<beng@jlab.org></a>; Marc Mcmullen <a class="x_x_moz-txt-link-rfc2396E" href="mailto:mcmullen@jlab.org">
<mcmullen@jlab.org></a><br>
<b>Cc:</b> Denny Insley <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dinsley@jlab.org">
<dinsley@jlab.org></a>; Bob Miller <a class="x_x_moz-txt-link-rfc2396E" href="mailto:rmiller@jlab.org">
<rmiller@jlab.org></a><br>
<b>Subject:</b> Re: DC gas mix restart</font>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Brian and Marc,<br>
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<br>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
We've lost control of the R3 supply MFC. As noted below, it was showing 22 lpm yesterday. This morning, Bob noted that it was full open, 95%, but still only flowing 22 lpm. When he increased the supply pressure, the flow increased to 40 lpm but the MFC didn't
change. I had him pull the big connector, which closed the MFC, but it still isn't responding. He said the green LED is solid instead of blinking like the others. Will on of y'all look into it? Bob's onsite until about 10 am if you need him to do anything.<br>
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<br>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Thanks,</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Morgan<br>
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<div id="x_x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Morgan Cook IV
<a class="x_x_moz-txt-link-rfc2396E" href="mailto:mcookiv@jlab.org"><mcookiv@jlab.org></a><br>
<b>Sent:</b> Wednesday, June 17, 2020 1:00 PM<br>
<b>To:</b> Brian Eng <a class="x_x_moz-txt-link-rfc2396E" href="mailto:beng@jlab.org">
<beng@jlab.org></a>; Bob Miller <a class="x_x_moz-txt-link-rfc2396E" href="mailto:rmiller@jlab.org">
<rmiller@jlab.org></a><br>
<b>Cc:</b> Denny Insley <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dinsley@jlab.org">
<dinsley@jlab.org></a><br>
<b>Subject:</b> Re: DC gas mix restart</font>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Hi Brian,</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
So Bob's brought Mix 1 and Mix 2 back online and zero'd the mixing MFCs. However the R3 setpoint isn't correct. He set it to 36 lpm, but it's only showing 22 lpm in epics. It looks like the ratios of both Mix1 and Mix 2 are right, but could you take a look
at it when you get a minute?</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Thanks,</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Morgan<br>
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<div id="x_x_x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri,
sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Brian Eng
<a class="x_x_moz-txt-link-rfc2396E" href="mailto:beng@jlab.org"><beng@jlab.org></a><br>
<b>Sent:</b> Thursday, June 11, 2020 9:00 AM<br>
<b>To:</b> Morgan Cook IV <a class="x_x_moz-txt-link-rfc2396E" href="mailto:mcookiv@jlab.org">
<mcookiv@jlab.org></a>; Bob Miller <a class="x_x_moz-txt-link-rfc2396E" href="mailto:rmiller@jlab.org">
<rmiller@jlab.org></a><br>
<b>Cc:</b> Denny Insley <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dinsley@jlab.org">
<dinsley@jlab.org></a><br>
<b>Subject:</b> Re: DC gas mix restart</font>
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</div>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
No worries, I did the exact same thing.</div>
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<br>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
As soon as you change any of the parameters that are currently set now it should take it out of the MEDCON6 mode and flow normally.</div>
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<br>
</div>
<div>
<ul>
<li><font face="Calibri, Arial, Helvetica,
sans-serif" color="#000000"><span style="">Manual Mode</span></font></li><li><font face="Calibri, Arial, Helvetica,
sans-serif" color="#000000"><span style="">Both Mixes set to pressure control</span></font></li><li><font face="Calibri, Arial, Helvetica,
sans-serif" color="#000000"><span style="">Mix #1 AR + CO2 + Mix #2 CO2 set to zero</span></font></li></ul>
<div><font face="Calibri, Arial, Helvetica,
sans-serif" color="#000000"><span style="">All of those must be met to have it flow like it is now.</span></font></div>
</div>
<div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
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<div id="x_x_x_x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri,
sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Morgan Cook IV
<a class="x_x_moz-txt-link-rfc2396E" href="mailto:mcookiv@jlab.org"><mcookiv@jlab.org></a><br>
<b>Sent:</b> Thursday, June 11, 2020 8:42 AM<br>
<b>To:</b> Brian Eng <a class="x_x_moz-txt-link-rfc2396E" href="mailto:beng@jlab.org">
<beng@jlab.org></a>; Bob Miller <a class="x_x_moz-txt-link-rfc2396E" href="mailto:rmiller@jlab.org">
<rmiller@jlab.org></a><br>
<b>Cc:</b> Denny Insley <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dinsley@jlab.org">
<dinsley@jlab.org></a>; dsg-dc <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dsg-dc@jlab.org">
<dsg-dc@jlab.org></a><br>
<b>Subject:</b> Re: DC gas mix restart</font>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Brian,</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Cancel this request. I misread our proposed July start date as June. With that timeline, we'll just bring both mix 1 and mix 2 systems back online and let them work their magic. Sorry for my confusion.<br>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Thanks.</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Morgan<br>
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<div id="x_x_x_x_x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri,
sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Morgan Cook IV
<a class="x_x_moz-txt-link-rfc2396E" href="mailto:mcookiv@jlab.org"><mcookiv@jlab.org></a><br>
<b>Sent:</b> Wednesday, June 10, 2020 9:43 AM<br>
<b>To:</b> Brian Eng <a class="x_x_moz-txt-link-rfc2396E" href="mailto:beng@jlab.org">
<beng@jlab.org></a>; Bob Miller <a class="x_x_moz-txt-link-rfc2396E" href="mailto:rmiller@jlab.org">
<rmiller@jlab.org></a><br>
<b>Cc:</b> Denny Insley <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dinsley@jlab.org">
<dinsley@jlab.org></a>; dsg-dc <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dsg-dc@jlab.org">
<dsg-dc@jlab.org></a><br>
<b>Subject:</b> Re: DC gas mix restart</font>
<div> </div>
</div>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Brian,</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Yes, I want to use the Mix#2 mixing system to supply Ar/CO2 to all regions. Friday would be good since we're supposed to get a get a gas delivery then.</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Thanks,</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Morgan<br>
</div>
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<div id="x_x_x_x_x_x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Brian Eng
<a class="x_x_moz-txt-link-rfc2396E" href="mailto:beng@jlab.org"><beng@jlab.org></a><br>
<b>Sent:</b> Tuesday, June 9, 2020 2:35 PM<br>
<b>To:</b> Morgan Cook IV <a class="x_x_moz-txt-link-rfc2396E" href="mailto:mcookiv@jlab.org">
<mcookiv@jlab.org></a>; Bob Miller <a class="x_x_moz-txt-link-rfc2396E" href="mailto:rmiller@jlab.org">
<rmiller@jlab.org></a><br>
<b>Cc:</b> Denny Insley <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dinsley@jlab.org">
<dinsley@jlab.org></a>; dsg-dc <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dsg-dc@jlab.org">
<dsg-dc@jlab.org></a><br>
<b>Subject:</b> Re: DC gas mix restart</font>
<div> </div>
</div>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Morgan,</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<span style="color:rgb(0,0,0); font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt">If I'm understanding what you want basically you'd like the current setup (all regions supplied from Mix #2), but to add in Mix #2 CO2 as one of the things that goes
up and down based on tank pressure in addition to Mix #2 Ar?</span><br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
If so, yes that can be done. Is there a time frame when that should go live?</div>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
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<div id="x_x_x_x_x_x_x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Morgan Cook IV
<a class="x_x_moz-txt-link-rfc2396E" href="mailto:mcookiv@jlab.org"><mcookiv@jlab.org></a><br>
<b>Sent:</b> Tuesday, June 9, 2020 2:15 PM<br>
<b>To:</b> Brian Eng <a class="x_x_moz-txt-link-rfc2396E" href="mailto:beng@jlab.org">
<beng@jlab.org></a>; Bob Miller <a class="x_x_moz-txt-link-rfc2396E" href="mailto:rmiller@jlab.org">
<rmiller@jlab.org></a><br>
<b>Cc:</b> Denny Insley <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dinsley@jlab.org">
<dinsley@jlab.org></a>; dsg-dc <a class="x_x_moz-txt-link-rfc2396E" href="mailto:dsg-dc@jlab.org">
<dsg-dc@jlab.org></a><br>
<b>Subject:</b> DC gas mix restart</font>
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Hi Brian,</div>
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I'd like to use this interim to re-establish the gas mix in the 2000 L tank we've been using and then start purging the DCs, before bringing the rest of the system online. Can the current script be changed to allow us to add CO2 back into mix2 for whenever
we get a CO2 delivery? <br>
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-Morgan<br>
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<pre class="x_x_moz-signature" cols="72">--
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 822-9586
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