<html><body><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000"><div>Hello,<br></div><div><br data-mce-bogus="1"></div><div>As George mentioned in his email below from Monday, he completed the full-scale flow test for the upgraded RICH nitrogen panel. In the Hall B Gas Shed, he was able to achieve ~60 slm flow on both channels for a total of ~120 slm for the entire panel. By George's experience, he anticipates that the flow we will be able to get in Hall B on the forward carriage will be ~ 40 slm per channel (~80 slm total) because of the back pressure caused by the supply line between the dewar and hall.<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>At this point, the panel is ready to be installed on the Forward Carriage. After it is moved into place, the old panel can be removed and the upgraded panel connected in its place in a few minutes to prevent any long stoppage of nitrogen flow. After the panel is installed, DSG will run a cable for the new pressure transducer on the panel and also make the required changes to the LabVIEW hardware interlock system.<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>In addition to the upgraded panel, DSG has ready an easidew hygrometer to measure the water concentration of RICH's nitrogen volume. This sensor will be place on one of RICH's nitrogen exhaust lines. For its installation, DSG will run a cable from the hygrometer to the N2 Vol cRIO for monitoring.<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>Best regards,<br data-mce-bogus="1"></div><div>Tyler</div><div><br></div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"George Jacobs" <jacobsg@jlab.org><br><b>To: </b>"Denny Insley" <dinsley@jlab.org>, "Tyler Lemon" <tlemon@jlab.org><br><b>Cc: </b>"Dave Kashy" <kashy@jlab.org>, "Robert Miller" <rmiller@jlab.org>, "dsg-rich" <dsg-rich@jlab.org><br><b>Sent: </b>Monday, July 16, 2018 10:20:39 AM<br><b>Subject: </b>Re: [Dsg-rich] RICH N2 panel flow test<br></div><div><br></div><div data-marker="__QUOTED_TEXT__">Hi All,<br>
<br>
The new RICH N2 purge supply panel was connected to the 96B gas shed
N2 supply to verify proper gas flow. N2 gas supply pressure is 35
psi.<br>
<br>
Using both 0-60 slm capacity flow meters at the same time, flows
> 60 slm per channel were achieved with the pressure regulator
output as low as 5 psi.<br>
<br>
Thanks,<br>
George<br>
<br>
<div class="moz-cite-prefix">On 7/13/2018 1:01 PM, Denny Insley
wrote:<br>
</div>
<blockquote cite="mid:D45C34D6-039B-4387-B931-FD38EF0AC986@jlab.org">
Good afternoon
<div><br>
</div>
<div> The panel is now in the gas shed. Contact</div>
<div>Todd Ewing when your ready to start hooking it up.</div>
<div><br>
</div>
<div>Thanks </div>
<div>Denny<br>
<br>
<div id="AppleMailSignature">Sent from my iPhone</div>
<div><br>
On Jul 13, 2018, at 12:01 PM, Tyler Lemon <<a href="mailto:tlemon@jlab.org" target="_blank">tlemon@jlab.org</a>>
wrote:<br>
<br>
</div>
<blockquote>
<div>
<div style="font-family: times new roman,new
york,times,serif; font-size: 12pt; color: #000000">Hi
Dave,<br>
<br>
Thank you for checking the panel.<br>
<br>
Once the panel is moved, DSG will set up the test,
following your instruction to pipe the flow outside.<br>
<br>
Best regards,<br>
Tyler<br>
<br>
<hr id="zwchr">
<div><b>From: </b>"Dave Kashy" <<a href="mailto:kashy@jlab.org" target="_blank">kashy@jlab.org</a>><br>
<b>To: </b>"Robert Miller" <<a href="mailto:rmiller@jlab.org" target="_blank">rmiller@jlab.org</a>>,
"Denny Insley" <<a href="mailto:dinsley@jlab.org" target="_blank">dinsley@jlab.org</a>><br>
<b>Cc: </b>"Tyler Lemon" <<a href="mailto:tlemon@jlab.org" target="_blank">tlemon@jlab.org</a>>,
"dsg-rich" <<a href="mailto:dsg-rich@jlab.org" target="_blank">dsg-rich@jlab.org</a>>,
"George Jacobs" <<a href="mailto:jacobsg@jlab.org" target="_blank">jacobsg@jlab.org</a>><br>
<b>Sent: </b>Friday, July 13, 2018 8:26:49 AM<br>
<b>Subject: </b>Re: [Dsg-rich] RICH gas system updates<br>
</div>
<br>
<div>Hi Bob and Denny,<br>
George borrowed our gauge and tightened the fittings on
the gas panel. This morning I checked them all and found
1 that I tigtened 1/4 turn more. They are all now
properly set and verified proper compression using the
Swagelock gage. Please transport the panel out to the
gas shed. I think it should be put it inside. The DSG
folks will then make some temporary connections to do
the flow tests on it. They should pipe the exhaust out
of the shed or have the overhead door full open while
testing and remove all temporary tubing before closing
the overhead door.<br>
<br>
Dave<br>
<br>
<br>
----- Original Message -----<br>
From: "George Jacobs" <<a href="mailto:jacobsg@jlab.org" target="_blank">jacobsg@jlab.org</a>><br>
To: "kashy" <<a href="mailto:kashy@jlab.org" target="_blank">kashy@jlab.org</a>>, "Tyler
Lemon" <<a href="mailto:tlemon@jlab.org" target="_blank">tlemon@jlab.org</a>><br>
Cc: "dsg-rich" <<a href="mailto:dsg-rich@jlab.org" target="_blank">dsg-rich@jlab.org</a>>,
"Robert Miller" <<a href="mailto:rmiller@jlab.org" target="_blank">rmiller@jlab.org</a>><br>
Sent: Wednesday, July 11, 2018 5:14:19 PM<br>
Subject: Re: [Dsg-rich] RICH gas system updates<br>
<br>
Hi Dave, <br>
<br>
I will pick up the gauge in the morning. <br>
<br>
Please find attached diagram of proposed N2 valve panel
flow test configuration. This uses one of the N2 utility
connections in 96B as the gas supply. <br>
<br>
Thanks, <br>
George <br>
<br>
On 7/11/2018 4:00 PM, Dave Kashy wrote: <br>
<br>
<br>
<br>
Tyler,<br>
In order to save time I have a fitting gage on my desk.<br>
You or someone else can come over to borrow it. Please
return it upon finishing the work.<br>
<br>
Thanks<br>
Dave<br>
<br>
<br>
----- Original Message -----<br>
From: "Tyler Lemon" <<a href="mailto:tlemon@jlab.org" target="_blank">tlemon@jlab.org</a>> To:
"dsg-rich" <<a href="mailto:dsg-rich@jlab.org" target="_blank">dsg-rich@jlab.org</a>> ,
"kashy" <<a href="mailto:kashy@jlab.org" target="_blank">kashy@jlab.org</a>> ,
"Robert Miller" <<a href="mailto:rmiller@jlab.org" target="_blank">rmiller@jlab.org</a>> Sent:
Wednesday, July 11, 2018 3:57:37 PM<br>
Subject: RICH gas system updates<br>
<br>
Hello, <br>
<br>
In regards to the upgraded RICH N2 panel and the email
this morning, George has ordered a Swagelok gauge for
ensuring the fittings are properly tightened. Once he
receives the gauge, we will check the panel and tighten
the necessary connections. After the panel is checked,
the panel will be moved over to the Hall B Gas Shed for
the full-scale flow test. DSG will need assistance from
Hall B Engineering to move the panel as we do not have
the transportation equipment necessary. Before the
full-scale flow test, George will generate a diagram
showing the panel connected to the nitrogen supply line.
<br>
<br>
DSG also has on hand a Easidew moisture transducer and
fittings that will allow the transducer to be connected
to RICH's nitrogen exhaust line. This moisture
transducer is on RICH and is not part of the RICH
pressure transducer. It is separate from the nitrogen
panel upgrade. Installation of the moisture transducer
would not take long. The plan is to get all parts ready,
remove the existing gas line, and quickly install the
moisture transducer to limit the chances moisture enters
RICH. This sensor will be read by RICH's N2 cRIO and
will only be monitored; no interlocks will be on the
sensor. <br>
<br>
If there are any questions on the nitrogen panel upgrade
or the Easidew moisture transducer, please let us know.
<br>
<br>
Best regards, <br>
Tyler<br>
_______________________________________________<br>
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<br>
<br>
<br>
<br>
-- <br>
George Jacobs<br>
Jefferson Lab (TJNAF)<br>
STE 12<br>
12000 Jefferson Ave.<br>
Newport News, VA 23606<br>
<br>
(office) 757-269-7115<br>
<br>
(cell) 757-876-0480<br>
<br>
(email) <a href="mailto:jacobsg@jlab.org" target="_blank">jacobsg@jlab.org</a> (website)
<a href="https://userweb.jlab.org/%7Ejacobsg" target="_blank">https://userweb.jlab.org/~jacobsg</a><br>
</div>
</div>
</div>
</blockquote>
</div>
</blockquote>
<br>
<pre class="moz-signature">--
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" target="_blank">jacobsg@jlab.org</a>
(website) <a class="moz-txt-link-freetext" href="https://userweb.jlab.org/~jacobsg" target="_blank">https://userweb.jlab.org/~jacobsg</a><br data-mce-bogus="1"></pre><br></div></div></body></html>