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<p>That is great- the system is safer in that configuration. If your
test apparatus works as intended, let Bob and I know when this is
ready to be installed in the hall. Bob, will Morgan be doing this
work?<br>
</p>
<div class="moz-cite-prefix">On 1/10/2019 10:12 AM, George Jacobs
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:DM6PR09MB3225C8BB6635C3B38DB211FDDA840@DM6PR09MB3225.namprd09.prod.outlook.com">
<div id="divtagdefaultwrapper" dir="ltr">
<p>Hi Bill,</p>
<p><br>
</p>
<p>I moved RV1 to just downstream of the 0-60 psi back up supply
PR in the P&I as you suggested. See attached P&I
diagram</p>
<p><br>
</p>
<p>We have successfully tested for proper pnuematic valve
operation. The equipment is now labeled and ready to install.</p>
<p><br>
</p>
<p>Thanks,</p>
<p>George<br>
</p>
<p><br>
</p>
<div id="Signature">
<meta content="text/html; charset=UTF-8">
<div id="divtagdefaultwrapper" dir="ltr">
<p><span id="ms-rterangepaste-start"></span></p>
<div>-- <br>
George Jacobs<br>
Jefferson Lab (TJNAF)<br>
STE 12<br>
12000 Jefferson Ave.<br>
Newport News, VA 23606<br>
<br>
(office) 757-269-7021<br>
<br>
(cell) 757-876-0480<br>
<br>
(email) <a class="moz-txt-link-abbreviated" href="mailto:jacobsg@jlab.org">jacobsg@jlab.org</a><br>
<br>
(website) <a class="moz-txt-link-freetext" href="https://userweb.jlab.org/~jacobsg">https://userweb.jlab.org/~jacobsg</a></div>
<span id="ms-rterangepaste-end"></span><br>
</div>
</div>
<br>
<br>
<div>
<hr tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><b>From:</b> William Crahen
<a class="moz-txt-link-rfc2396E" href="mailto:wcrahen@jlab.org"><wcrahen@jlab.org></a><br>
<b>Sent:</b> Tuesday, January 8, 2019 1:29 PM<br>
<b>To:</b> George Jacobs<br>
<b>Cc:</b> Bob Miller; David Kashy<br>
<b>Subject:</b> Re: [Dsg-rich] RICH N2 system automatic
backup
<div> </div>
</div>
<div>
<p>The new arrangement is okay and the relief valve is
properly sized. You can go ahead and test your desktop
arrangement, with a couple of additional comments- if the
relief is at the panel as indicated, you need to keep an
eye on the length of 1/2" Nylotube- keep it at 100' or
less. The reason is pressure drop at the relieving
condition-you may have 75 x 1.1=82.5 psig at the panel,
but the other end of the tube will be at a pressure =82.5
+ pipe loss value. You should consider moving the relief
to the supply end of things.<br>
</p>
<div class="x_moz-cite-prefix">On 1/7/2019 2:06 PM, George
Jacobs wrote:<br>
</div>
<blockquote type="cite">
<div id="x_divtagdefaultwrapper" dir="ltr">
<div id="x_divtagdefaultwrapper" dir="ltr">
<p>Hi Bill,</p>
<p><br>
</p>
<p>I have moved the relief valve as requested and
added a size 47 Okeefe orifice on the high pressure
side of the back up supply pressure regulator. I
have added the orifice to the P&I diagram and
componenets spreadsheet. See attachments.</p>
<p><br>
</p>
<p>The line length for the backup supply will depend
on where Hall B decides to locate the back up supply
gas bottles. A back up supply flow of 20 slm per
detector volume, 40 slm total, is the target back up
flow.<br>
</p>
<p><br>
</p>
Thanks,</div>
<div dir="ltr">George<br>
<p><br>
</p>
<div id="x_Signature">
<meta content="text/html; charset=UTF-8">
<div id="x_divtagdefaultwrapper" dir="ltr">
<p><span id="x_ms-rterangepaste-start"></span></p>
<div>-- <br>
George Jacobs<br>
Jefferson Lab (TJNAF)<br>
STE 12<br>
12000 Jefferson Ave.<br>
Newport News, VA 23606<br>
<br>
(office) 757-269-7021<br>
<br>
(cell) 757-876-0480<br>
<br>
(email) <a class="x_moz-txt-link-abbreviated
OWAAutoLink" href="mailto:jacobsg@jlab.org"
id="LPlnk995507" moz-do-not-send="true">
jacobsg@jlab.org</a><br>
<br>
(website) <a class="x_moz-txt-link-freetext
OWAAutoLink"
href="https://userweb.jlab.org/~jacobsg"
id="LPlnk802255" moz-do-not-send="true">
https://userweb.jlab.org/~jacobsg</a></div>
<span id="x_ms-rterangepaste-end"></span><br>
</div>
</div>
<br>
<br>
<div>
<hr tabindex="-1">
<div id="x_divRplyFwdMsg" dir="ltr"><b>From:</b>
William Crahen <a class="x_moz-txt-link-rfc2396E
OWAAutoLink" href="mailto:wcrahen@jlab.org"
id="LPlnk698677" moz-do-not-send="true">
<wcrahen@jlab.org></a><br>
<b>Sent:</b> Friday, January 4, 2019 4:19 PM<br>
<b>To:</b> George Jacobs<br>
<b>Cc:</b> Bob Miller; David Kashy<br>
<b>Subject:</b> Re: [Dsg-rich] RICH N2 system
automatic backup
<div> </div>
</div>
<div>
<p>George, before we do that, please see the
attached. We need to relocate RV1 so that it can
protect both PV1 and PT3- RV1 serves no purpose
in it's current location with respect to the
Dewar supply, as that is already limited by the
65 psig reliefs installed on the dewar. The
credible high pressure scenario is failure of
the N2 cyl bank regulator, which could dump 3000
psi into the nylon line leading to PT3. If RV1
is relocated as indicated and an orifice is
installed on the cylinder bank regulator (which
I am assuming is in the plans) then sizing the
orifice and including pipe pressure loss to RV1
for a flow of 70 SCFM or less will protect the
components.<br>
</p>
<div class="x_x_moz-cite-prefix">On 1/4/2019 2:32
PM, George Jacobs wrote:<br>
</div>
<blockquote type="cite">
<div id="x_x_divtagdefaultwrapper" dir="ltr">
<p>Hi William,</p>
<p><br>
</p>
<p>Can you give the DSG an estimate on when
the back up N2 supply will be ready for
testing and installation in Hall B?</p>
<p><br>
</p>
<p>Thanks,</p>
<p>George<br>
</p>
<p><br>
</p>
<div id="x_x_Signature">
<meta content="text/html; charset=UTF-8">
<div id="x_x_divtagdefaultwrapper" dir="ltr">
<p><span id="x_x_ms-rterangepaste-start"></span></p>
<div>-- <br>
George Jacobs<br>
Jefferson Lab (TJNAF)<br>
STE 12<br>
12000 Jefferson Ave.<br>
Newport News, VA 23606<br>
<br>
(office) 757-269-7021<br>
<br>
(cell) 757-876-0480<br>
<br>
(email) <a
class="x_x_moz-txt-link-abbreviated
x_OWAAutoLink"
href="mailto:jacobsg@jlab.org"
id="LPlnk903663"
moz-do-not-send="true">
jacobsg@jlab.org</a><br>
<br>
(website) <a
class="x_x_moz-txt-link-freetext
x_OWAAutoLink"
href="https://userweb.jlab.org/~jacobsg"
id="LPlnk111494"
moz-do-not-send="true">
https://userweb.jlab.org/~jacobsg</a></div>
<span id="x_x_ms-rterangepaste-end"></span><br>
</div>
</div>
<br>
<br>
<div>
<hr tabindex="-1">
<div id="x_x_divRplyFwdMsg" dir="ltr"><b>From:</b>
Dsg-rich <a
class="x_x_moz-txt-link-rfc2396E
x_OWAAutoLink"
href="mailto:dsg-rich-bounces@jlab.org"
id="LPlnk979335" moz-do-not-send="true">
<dsg-rich-bounces@jlab.org></a> on
behalf of George Jacobs <a
class="x_x_moz-txt-link-rfc2396E
x_OWAAutoLink"
href="mailto:jacobsg@jlab.org"
id="LPlnk811407" moz-do-not-send="true">
<jacobsg@jlab.org></a><br>
<b>Sent:</b> Monday, December 17, 2018
4:56 PM<br>
<b>To:</b> Bill Crahen; Tyler Lemon; Bob
Miller; dsg-rich<br>
<b>Subject:</b> Re: [Dsg-rich] RICH N2
system automatic backup
<div> </div>
</div>
<div dir="ltr">
<div id="x_x_x_divtagdefaultwrapper"
dir="ltr">
<p>Hi William,</p>
<p><br>
</p>
<p>Please find attached files; updated
and expanded components list, updated
P&I diagram, and annotated pic of
assembly (for ref)</p>
<p><br>
</p>
<p>Please let me know if you need any
additional info.</p>
<p><br>
</p>
<p>Happy Holidays!<br>
</p>
<p><br>
</p>
<div id="x_x_x_Signature">
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charset=UTF-8">
<div id="x_x_x_divtagdefaultwrapper"
dir="ltr">
<p><span
id="x_x_x_ms-rterangepaste-start"></span></p>
<div>-- <br>
George Jacobs<br>
Jefferson Lab (TJNAF)<br>
STE 12<br>
12000 Jefferson Ave.<br>
Newport News, VA 23606<br>
<br>
(office) 757-269-7021<br>
<br>
(cell) 757-876-0480<br>
<br>
(email) <a
class="x_x_moz-txt-link-abbreviated
x_OWAAutoLink"
href="mailto:jacobsg@jlab.org"
id="LPlnk185056"
moz-do-not-send="true">
jacobsg@jlab.org</a><br>
<br>
(website) <a
class="x_x_moz-txt-link-freetext
x_OWAAutoLink"
href="https://userweb.jlab.org/~jacobsg"
id="LPlnk781131"
moz-do-not-send="true">
https://userweb.jlab.org/~jacobsg</a></div>
<span
id="x_x_x_ms-rterangepaste-end"></span><br>
</div>
</div>
<br>
<br>
<div>
<hr tabindex="-1">
<div id="x_x_x_divRplyFwdMsg"
dir="ltr"><b>From:</b> William
Crahen <a
class="x_x_moz-txt-link-rfc2396E
x_OWAAutoLink"
href="mailto:wcrahen@jlab.org"
id="LPlnk591512"
moz-do-not-send="true">
<wcrahen@jlab.org></a><br>
<b>Sent:</b> Friday, December 14,
2018 2:43 PM<br>
<b>To:</b> George Jacobs; Tyler
Lemon; Bob Miller; dsg-rich<br>
<b>Subject:</b> Re: [Dsg-rich] RICH
N2 system automatic backup
<div> </div>
</div>
<div>
<p>George, I need more information
about this system- please provide
the following:</p>
<p>indicate line sizes and material
on the diagram. I also need the
corresponding attachment fittings
information, manufacturer and part
number. If the tubing is plastic,
part numbers for the tube inserts
if required by the manufacturer.
The same information is needed on
the parts list you provided- some
are listing manufacturer info
(Grainger is a distributor, not a
manufacturer).<br>
</p>
<p>there is a relief valve on this
system- where is the sizing
calculation?</p>
<p>what is the pressure system
number associated with this
system?</p>
<p>where is this system physically
located?</p>
<p>Are there actual mechanical
drawings of this system?<br>
</p>
<p><br>
</p>
<div class="x_x_x_x_moz-cite-prefix">On
12/14/2018 1:18 PM, George Jacobs
wrote:<br>
</div>
<blockquote type="cite">
<div
id="x_x_x_x_divtagdefaultwrapper"
dir="ltr">
<p>Please find attached files
for the RICH N2 purge back-up
supply.<br>
</p>
<p><br>
</p>
<div id="x_x_x_x_Signature">
<meta content="text/html;
charset=UTF-8">
<div
id="x_x_x_x_divtagdefaultwrapper"
dir="ltr">
<p><span
id="x_x_x_x_ms-rterangepaste-start"></span></p>
<div>-- <br>
George Jacobs<br>
Jefferson Lab (TJNAF)<br>
STE 12<br>
12000 Jefferson Ave.<br>
Newport News, VA 23606<br>
<br>
(office) 757-269-7021<br>
<br>
(cell) 757-876-0480<br>
<br>
(email) <a
class="x_x_x_x_moz-txt-link-abbreviated
x_x_x_OWAAutoLink"
href="mailto:jacobsg@jlab.org"
id="LPlnk785596"
moz-do-not-send="true">
jacobsg@jlab.org</a><br>
<br>
(website) <a
class="x_x_x_x_moz-txt-link-freetext
x_x_x_OWAAutoLink"
href="https://userweb.jlab.org/~jacobsg"
id="LPlnk897214"
moz-do-not-send="true">
https://userweb.jlab.org/~jacobsg</a></div>
<span
id="x_x_x_x_ms-rterangepaste-end"></span><br>
</div>
</div>
<br>
<br>
<div>
<hr tabindex="-1">
<div
id="x_x_x_x_divRplyFwdMsg"
dir="ltr"><b>From:</b>
Dsg-rich <a
class="x_x_x_x_moz-txt-link-rfc2396E
x_x_x_OWAAutoLink"
href="mailto:dsg-rich-bounces@jlab.org"
id="LPlnk944441"
moz-do-not-send="true">
<dsg-rich-bounces@jlab.org></a> on behalf of Tyler Lemon <a
class="x_x_x_x_moz-txt-link-rfc2396E
x_x_x_OWAAutoLink"
href="mailto:tlemon@jlab.org"
id="LPlnk566255"
moz-do-not-send="true">
<tlemon@jlab.org></a><br>
<b>Sent:</b> Friday,
December 14, 2018 12:40 PM<br>
<b>To:</b> Bob Miller; Bill
Crahen; dsg-rich<br>
<b>Subject:</b> Re:
[Dsg-rich] RICH N2 system
automatic backup
<div> </div>
</div>
<div dir="ltr">
<div
id="x_x_x_x_x_divtagdefaultwrapper"
dir="ltr">
<p>Hello George,</p>
<p><br>
</p>
<p>Can you send Bob Miller
and Bill Crahen the
drawing, pressure
systems numbers and any
other documentation you
have on the RICH N2
automatic back up?</p>
<p><br>
</p>
<p>Bill will be the DA for
it.<br>
</p>
<p><br>
</p>
<p><br>
</p>
<p>Best regards,</p>
<p>Tyler<br>
</p>
<br>
<br>
<div>
<hr tabindex="-1">
<div
id="x_x_x_x_x_divRplyFwdMsg"
dir="ltr"><b>From:</b>
Bob Miller <a
class="x_x_x_x_moz-txt-link-rfc2396E
x_x_x_OWAAutoLink"
href="mailto:rmiller@jlab.org"
id="LPlnk81985"
moz-do-not-send="true">
<rmiller@jlab.org></a><br>
<b>Sent:</b> Friday,
December 14, 2018 9:25
AM<br>
<b>To:</b> Tyler Lemon<br>
<b>Cc:</b> Bill
Crahen; Amrit
Yegneswaran<br>
<b>Subject:</b> Fwd:
Re: [Dsg-rich] RICH N2
system automatic
backup
<div> </div>
</div>
<div>
<p>Hi Tyler,</p>
<p><br>
</p>
<p>Please send the
drawings, pressure
systems number, and
whatever
documentation you
have to Bill Crahen
and myself.</p>
<p><br>
</p>
<p>Bill will be the DA
on this project.</p>
<p><br>
</p>
<p>Regards,</p>
<p>Bob<br>
</p>
<div
class="x_x_x_x_x_x_moz-forward-container"><br>
<br>
-------- Forwarded
Message --------
<table
class="x_x_x_x_x_x_moz-email-headers-table">
<tbody>
<tr>
<th
nowrap="nowrap">Subject:
</th>
<td>Re:
[Dsg-rich]
RICH N2 system
automatic
backup</td>
</tr>
<tr>
<th
nowrap="nowrap">Date:
</th>
<td>Wed, 12
Dec 2018
19:39:33 -0500</td>
</tr>
<tr>
<th
nowrap="nowrap">From:
</th>
<td>Amrit
Yegneswaran <a
class="x_x_x_x_x_x_moz-txt-link-rfc2396E x_x_x_x_x_OWAAutoLink"
href="mailto:yeg@jlab.org"
id="LPlnk406820" moz-do-not-send="true">
<yeg@jlab.org></a></td>
</tr>
<tr>
<th
nowrap="nowrap">To:
</th>
<td>Marco
Contalbrigo <a
class="x_x_x_x_x_x_moz-txt-link-rfc2396E x_x_x_x_x_OWAAutoLink"
href="mailto:mcontalb@fe.infn.it"
id="LPlnk22469" moz-do-not-send="true">
<mcontalb@fe.infn.it></a>, Patrizia Rossi <a
class="x_x_x_x_x_x_moz-txt-link-rfc2396E
x_x_x_x_x_OWAAutoLink" href="mailto:rossi@jlab.org" id="LPlnk718032"
moz-do-not-send="true">
<rossi@jlab.org></a>, Bob Miller <a
class="x_x_x_x_x_x_moz-txt-link-rfc2396E
x_x_x_x_x_OWAAutoLink" href="mailto:rmiller@jlab.org" id="LPlnk5137"
moz-do-not-send="true">
<rmiller@jlab.org></a></td>
</tr>
<tr>
<th
nowrap="nowrap">CC:
</th>
<td>dsg-rich <a
class="x_x_x_x_x_x_moz-txt-link-rfc2396E x_x_x_x_x_OWAAutoLink"
href="mailto:dsg-rich@jlab.org"
id="LPlnk700658" moz-do-not-send="true">
<dsg-rich@jlab.org></a></td>
</tr>
</tbody>
</table>
<br>
<br>
<div
id="x_x_x_x_x_x_divtagdefaultwrapper"
dir="ltr">
<p>bob,</p>
<p>please assign a
design authority
for the analysis
and approval of
the system.</p>
<p>thanks <br>
</p>
<p>amrit<br>
</p>
<br>
<br>
<div>
<hr
tabindex="-1">
<div
id="x_x_x_x_x_x_divRplyFwdMsg"
dir="ltr"><b>From:</b>
Dsg-rich <a
class="x_x_x_x_x_x_moz-txt-link-rfc2396E
x_x_x_x_x_OWAAutoLink" href="mailto:dsg-rich-bounces@jlab.org"
id="LPlnk967199"
moz-do-not-send="true">
<dsg-rich-bounces@jlab.org></a> on behalf of Marco Contalbrigo <a
class="x_x_x_x_x_x_moz-txt-link-rfc2396E x_x_x_x_x_OWAAutoLink"
href="mailto:mcontalb@fe.infn.it"
id="LPlnk455803" moz-do-not-send="true">
<mcontalb@fe.infn.it></a><br>
<b>Sent:</b>
Wednesday,
December 12,
2018 3:33 PM<br>
<b>To:</b>
Patrizia Rossi<br>
<b>Cc:</b>
dsg-rich<br>
<b>Subject:</b>
Re: [Dsg-rich]
RICH N2 system
automatic
backup
<div> </div>
</div>
<div
class="x_x_x_x_x_x_BodyFragment"><span>
<div
class="x_x_x_x_x_x_PlainText">Dear
Tyler,<br>
thank to DSG
for this nice
upgrade!<br>
Marco.<br>
<br>
On Wed, 12 Dec
2018, Patrizia
Rossi wrote:<br>
<br>
> Very
appreciated
Christmas
gift!! Thank
you Tyler and
DSG people!!<br>
> Patrizia <br>
> <br>
> Sent from
my iPhone<br>
> <br>
> On Dec
12, 2018, at
3:13 PM, Tyler
Lemon <a
class="x_x_x_x_x_x_moz-txt-link-rfc2396E
x_x_x_x_x_OWAAutoLink" href="mailto:tlemon@jlab.org" id="LPlnk671870"
moz-do-not-send="true">
<tlemon@jlab.org></a> wrote:<br>
><br>
>
Hello,<br>
> <br>
><br>
> DSG
has developed
a system to
automatically
switch RICH to
a back up<br>
>
bank of
nitrogen in
the event that
Hall B's main
nitrogen
supply is<br>
>
stopped.<br>
> <br>
><br>
> The
system is
designed to
use a
pneumatic
valve operated
using the<br>
><br>
>
pressure from
the main N2
supply line
that will open
if that supply<br>
>
pressure
drops. The
open pneumatic
valve will
then allow N2
to flow to<br>
>
RICH from a
bank of
nitrogen
bottles.
Attached is a
revised RICH<br>
>
nitrogen
system diagram
showing the
new automatic
switch-over<br>
>
components.<br>
> <br>
><br>
>
George has
assembled the
new components
and DSG would
like to test
them<br>
> at
the beginning
of next year
after the
holidays. To
be able to do
any<br>
>
sort of
testing, the
components and
test procedure
will need to
undergo<br>
> a
pressure
systems
analysis by a
Design
Authority
(DA).<br>
> <br>
><br>
> DSG
will provide
the necessary
documentation
to the DA once
one is<br>
>
requested and
assigned.<br>
> <br>
><br>
>
Best regards,<br>
><br>
>
Tyler<br>
><br>
>
<RICH-N2-valve
panel-REV2..pdf><br>
><br>
>
_______________________________________________<br>
>
Dsg-rich
mailing list<br>
> <a
class="x_x_x_x_x_x_moz-txt-link-abbreviated x_x_x_x_x_OWAAutoLink"
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Dsg-rich@jlab.org</a><br>
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id="LPUrlAnchor_15446615018720.4533420414911362"
href="https://mailman.jlab.org/mailman/listinfo/dsg-rich"
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<div
id="LPMetadata_15446615018720.6502693213462405">mailman.jlab.org</div>
<div
id="LPDescription_15446615018720.8376964516236814">Mailing
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B RICH.
Members of
mailing list
are DSG, INFN
collaborators,
and other JLab
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with RICH. To
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collection of
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visit the
Dsg-rich
Archives..
Using Dsg-rich</div>
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