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Hi Dave,<br>
<br>
The MV4 is for an alternate N2 supply in case it is needed due to
N2 system maintenance or outage.<br>
<br>
If the sensor requires removal or replacement, the gas supply can be
isolated for a minute or two while it is removed and the connection
plugged. <br>
<br>
Thanks,<br>
George<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 7/11/2018 3:47 PM, Dave Kashy wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1439820699.7159275.1531338451388.JavaMail.zimbra@jlab.org">
<pre wrap="">Hi George,
What is the purpose of MV4?
If it is for venting and checking calibration of the PT, should there not be a manual valve to isolate the PT from the system so operation can continue while doing the calibration?
Thanks
Dave
----- Original Message -----
From: "George Jacobs" <a class="moz-txt-link-rfc2396E" href="mailto:jacobsg@jlab.org"><jacobsg@jlab.org></a>
To: "dsg-rich" <a class="moz-txt-link-rfc2396E" href="mailto:dsg-rich@jlab.org"><dsg-rich@jlab.org></a>, "kashy" <a class="moz-txt-link-rfc2396E" href="mailto:kashy@jlab.org"><kashy@jlab.org></a>
Sent: Wednesday, July 11, 2018 3:31:06 PM
Subject: N2 panel P&I update
Hi Dave,
I have updated the P&I for this panel, see attached file.
Thanks,
George
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
(office) 757-269-7115
(cell) 757-876-0480
(email) <a class="moz-txt-link-abbreviated" href="mailto:jacobsg@jlab.org">jacobsg@jlab.org</a>
(website) <a class="moz-txt-link-freetext" href="https://userweb.jlab.org/~jacobsg">https://userweb.jlab.org/~jacobsg</a></pre>
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