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<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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</blockquote>
<br>
<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">sandro.tomassini@lnf.infn.it</a>
<a class="moz-txt-link-freetext" href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.lnf.infn.it_&d=DwMCaQ&c=lz9TcOasaINaaC3U7FbMev2lsutwpI4--09aP8Lu18s&r=9YtCiIg5kE6YCo5iFAyFiMgzNCONVcBowotEOgGZ4Co&m=CGc8MNWKw9JWrZ1CHvjLbNXv3h3tebPBmmxTR1x1GI4&s=moLBtGB94NrqoISGh1qJhSn9xbO6JomCEi_uSlU89Gw&e=">http://www.lnf.infn.it/</a>
-----------------------------------------
-- </pre>
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