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<p class="MsoNormal"><span style="color:#1F497D">Update on the end dish bellows: <o:p>
</o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">From Jay Benesch - A very old order of the bellows did not specify the forming fluid composition and one bearing chlorine was used by the vendor. These bellows developed leaks and should have been scrapped.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">We are sending the bellows found in inventory through Tom Prosper for a quick leak check. There is no visual indication of corrosion that would be present if the bellows were contaminated with chlorine and some
of the bellows are passing an initial leak check. Based on this, I think the bellows we have on hand have the potential to be usable for future C75 cryomodules. I will create a traveler for inspection of these bellows and recording the SNs into Pansophy
and Primes. This will also allow us to generate NCRs on the bellows that did not pass the initial leak check. I did not see an existing traveler that captured the inspection of just end dish bellows – there is an ER5C-INSP-ENDD for the inspection of an assembled
end dish and ER5C-FAB-ENDD for fabricating the end dish.<o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Tiffany Ganey<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> Tiffany Ganey <br>
<b>Sent:</b> Friday, April 14, 2023 9:22 AM<br>
<b>To:</b> Scott Williams <scott@jlab.org>; Gregory Grose <grose@jlab.org>; Danny Forehand <forehand@jlab.org>; Chris Dreyfuss <dreyfuss@jlab.org>; Alex Wildeson <wildeson@JLAB.ORG>; Ashley Mitchell <ashleya@JLAB.ORG>; Christiana Wilson <grenoble@jlab.org>;
George DeKerlegand <georged@jlab.org>; E. Anne McEwen <mcewen@JLAB.ORG>; Liang Zhao <lzhao@jlab.org><br>
<b>Cc:</b> Kirk Davis <kdavis@jlab.org>; Tony Reilly <areilly@jlab.org>; Mike Dickey <mdickey@JLAB.ORG><br>
<b>Subject:</b> CEBAF Cavity Pair End Dishes and Bellows<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There are some CEBAF Cavity Pair End Dish parts in inventory that we are trying to determine if they are usable for current C50 / C75 cavity pair assemblies. (Pictures of parts on shelf at the end of this email.)<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>4x end dish assemblies (11151-0219)<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo2">
<![if !supportLists]><span style="font-family:"Courier New""><span style="mso-list:Ignore">o<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>SN ED092: <a href="https://pansophy.jlab.org/pansophy/Travelers/TRAVELER_FORM.cfm?project=ER5C&area=ER5C&system=INSP&TRAV_ID=ER5C-INSP-ENDD&TRAV_REVISION=R1&page=1&maxpage=2&TRAV_SEQ_NUM=11&ncr_num=.&travstat=y&serialnum=ED092&SN=ED092&SNType=ENDDSN">
ER5C-INSP-ENDD #11</a>, no NCRs, no OoT, no leak check performed?<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo2">
<![if !supportLists]><span style="font-family:"Courier New""><span style="mso-list:Ignore">o<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>SN ED036: <a href="https://pansophy.jlab.org/pansophy/Travelers/TRAVELER_FORM.cfm?project=ER5C&area=ER5C&system=INSP&TRAV_ID=ER5C-INSP-ENDD&TRAV_REVISION=R1&page=1&maxpage=2&TRAV_SEQ_NUM=10&ncr_num=.&travstat=y&serialnum=ED036&SN=ED036&SNType=ENDDSN">
ER5C-INSP-ENDD #10</a>, no NCRs, True Position OoT, no leak check performed?<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo2">
<![if !supportLists]><span style="font-family:"Courier New""><span style="mso-list:Ignore">o<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>SN ED094 (in the traveler as ED094F?): <a href="https://pansophy.jlab.org/pansophy/Travelers/TRAVELER_FORM.cfm?project=ER5C&area=ER5C&system=INSP&TRAV_ID=ER5C-INSP-ENDD&TRAV_REVISION=R1&page=1&maxpage=2&TRAV_SEQ_NUM=19&ncr_num=.&travstat=y&serialnum=ED094F&SN=ED094F&SNType=ENDDSN">
ER5C-INSP-ENDD #19</a>, <a href="https://pansophy.jlab.org/pansophy/Travelers/TRAVELER_FORM.cfm?project=ER5C&area=ER5C&system=INSP&TRAV_ID=ER5C-NCR&TRAV_REVISION=R8&page=1&maxpage=4&TRAV_SEQ_NUM=78&travstat=y&serialnum=ED094F&NCRID=ER5C-INSP-ENDD-R1-19">
NCR # 78</a> closed without a disposition?, Parallelism and True Position OoT, Leak check OK.<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo2">
<![if !supportLists]><span style="font-family:"Courier New""><span style="mso-list:Ignore">o<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>SN ED093 (in the traveler as ED093F?): <a href="https://pansophy.jlab.org/pansophy/Travelers/TRAVELER_FORM.cfm?project=ER5C&area=ER5C&system=INSP&TRAV_ID=ER5C-INSP-ENDD&TRAV_REVISION=R1&page=1&maxpage=2&TRAV_SEQ_NUM=20&ncr_num=.&travstat=y&serialnum=ED093F&SN=ED093F&SNType=ENDDSN">
ER5C-INSP-ENDD #20</a>, <a href="https://pansophy.jlab.org/pansophy/Travelers/TRAVELER_FORM.cfm?project=ER5C&area=ER5C&system=INSP&TRAV_ID=ER5C-NCR&TRAV_REVISION=R8&page=1&maxpage=4&TRAV_SEQ_NUM=79&travstat=y&serialnum=ED093F&NCRID=ER5C-INSP-ENDD-R1-20">
NCR # 79</a> closed without a disposition?, Parallelism and Flatness OoT, Leak check Ok<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>~23x end dish bellows (11151-0216)<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>3x end head closure dish (11151-0217)?<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>~3x inner adapters<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">After talking to Danny, I think that a first step may be to get the 4 end dish assemblies on the CMM waitlist. The travelers I listed above for the assemblies are from 2013-2015 so I think that a re-inspection would be needed before we
had confidence in the parts. I would prioritize ED092, which did not have any recorded out of tolerances so it may be closest to being useable as a spare for the current pair assemblies. Two of the other end dish assemblies have out of tolerances of 0.001”
so maybe they can be easily fixed or accepted for use as-is?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We are still working to find any history on the bellows but I believe that if we think that they may be useable, we should plan to re-inspect them anyway. If someone is familiar enough with these bellows, it may be good to go look at them
in inventory to make sure there is no obvious reason that they would not be usable.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If we find that some (or all) of these parts are not useable for current CEBAF pair assemblies, I think we should determine if the parts need to be put in a long term storage or if they can be properly disposed of to free up space in inventory.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><img border="0" width="639" height="479" style="width:6.6562in;height:4.9895in" id="Picture_x0020_2" src="cid:image001.jpg@01D97134.D4391890"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><img border="0" width="639" height="479" style="width:6.6562in;height:4.9895in" id="Picture_x0020_1" src="cid:image002.jpg@01D97134.D4391890"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><img border="0" width="639" height="479" style="width:6.6562in;height:4.9895in" id="Picture_x0020_3" src="cid:image003.jpg@01D97134.D4391890"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Tiffany Ganey<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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