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Hi Sandro,<br>
<br>
I think the simplest solution is to replace the metric tubing with
1/2" OD nylon tubing to route the air from the patch panel to the
air distribution manifold. Then use 1/2" SS tube for the manifolds.
These materials are in house.<br>
<br>
George<br>
<br>
<div class="moz-cite-prefix">On 9/21/2017 11:02 AM, Sandro Tomassini
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:b2d20f09-4ac5-2b2a-ea7b-bfe2c6f0da7d@lnf.infn.it">
<meta http-equiv="Context-Type" content="text/html; charset=utf-8">
<p>Hi Jeorge,</p>
<p>you mentioned the two 10 mm ID internal supply lines and
distribution manifolds internal to the detector, unfortunately
the OD for these lines is 10 mm and not the ID.</p>
<p>Best regards</p>
<p>Sandro<br>
</p>
<br>
<div class="moz-cite-prefix">Il 21/09/2017 16:54, George Jacobs ha
scritto:<br>
</div>
<blockquote type="cite"
cite="mid:933c2230-14c6-769c-8168-02085e306858@jlab.org"> Hi
Bob,<br>
<br>
The RICH air cooling pressure system does not include the air
supply line from the valve panel to the RICH or the distribution
manifolds inside the electronics module installed inside the
RICH. Pressure in the internal distribution manifold could be as
high as 60 psi at full design air flow. Assuming a worse case
scenario of the supply pressure regulator failure, it could be
as high as 90 psi.<br>
<br>
Plan is to run two 1" OD, 0.813" ID nylon tubes from the panel
to the detector, L=60 ft each, to supply the two 10 mm ID
internal supply lines and distribution manifolds internal to the
detector, L=16 ft each. see attached diagram.<br>
<br>
The distribution manifold was designed by INFN and produced by a
3D printer. These manifolds are questionable at best. I have
suggested that these be replaced with a section of SS tubing
that has the 2mm holes, orifices, drilled in it.<br>
<br>
The 1" OD Nylotube is rated at 230 psi. The 10mm ID tubing and
10mm SS tubing are rated > 120 psi. All components have
pressure rating greater than the worse case failure scenario.<br>
<br>
Due to the accelerated schedule, we should quickly determine a
way forward to complete any remaining pressure system
requirements.<br>
<br>
Thanks,<br>
George<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" moz-do-not-send="true">jacobsg@jlab.org</a>
(website) <a class="moz-txt-link-freetext" href="https://userweb.jlab.org/%7Ejacobsg" moz-do-not-send="true">https://userweb.jlab.org/~jacobsg</a></pre>
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<pre class="moz-signature" cols="72">--
-----------------------------------------
Dr. Eng. Sandro Tomassini
Istituto Nazionale di Fisica Nucleare
Laboratori Nazionali di Frascati
---Research Division---
P.O.Box 13 00044 Frascati (RM) Italy
Tel. office: +39 06 9403 2919/8089
Fax: +39 06 94032256
e-mail: <a class="moz-txt-link-abbreviated" href="mailto:sandro.tomassini@lnf.infn.it" moz-do-not-send="true">sandro.tomassini@lnf.infn.it</a>
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<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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