<html><body><div style="font-family: tahoma,new york,times,serif; font-size: 14pt; color: #009900"><div>hi george,<br></div><div>thanks for the exceptionally clear write up.<br data-mce-bogus="1"></div><div>i have a few questions and comments.<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>questions<br data-mce-bogus="1"></div><ol style="list-style-type: undefined;"><li>if the DA ascertains that some components of the distribution system, in the boxes marked MVT/FT, needs replacing; do we have a plan of action?<br data-mce-bogus="1"></li><li>does the eel system have to be pressure tested? or can it be considered legacy?<br data-mce-bogus="1"></li><li>what are the plans regarding the flammable gas in the gas shed? must the gas shed system have a flammable gas review? how about in the hall?<br data-mce-bogus="1"></li><li>if the gas system is ready by Sep. 30, are two weeks adequate for testing the detectors?<br data-mce-bogus="1"></li></ol><div>comments<br data-mce-bogus="1"></div><ol style="list-style-type: undefined;"><li>since the sum total of our concerns, questions, comments, and our contributions regarding the FT/MVT gas system has been disseminated to FT, MVT and Hall B, i suggest at this point we wait for requests from them.</li><li> the work on the solenoid will be conducted during the same period, so our (dsg) contribution to the gas system <em>could be limited</em> by a shortage of manpower; if such a situation should arise, i'll ask for patrizia's advise on priorities. <em><br data-mce-bogus="1"></em></li><li>i suggest we come up with a deadline by which if we don't have the components, we can unequivocally say that we'll not be able complete the work in time. <br data-mce-bogus="1"></li></ol><div>amit<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></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>"Amrit Yegneswaran" <yeg@jlab.org>, dsg-mvt@jlab.org, dsg-ft@jlab.org, "Volker Burkert" <burkert@jlab.org>, "Bob Miller" <rmiller@jlab.org>, "Mac Mestayer" <mestayer@jlab.org>, "Maxime Defurne" <mdefurne@jlab.org><br><b>Cc: </b>"Patrizia Rossi" <rossi@jlab.org>, "Matt Marchlik" <marchlik@jlab.org>, "Doug Tilles" <tilles@jlab.org>, "Stepan Stepanyan" <stepanya@jlab.org><br><b>Sent: </b>Wednesday, April 26, 2017 4:09:07 PM<br><b>Subject: </b>Re: [Dsg-mvt] Emailing - Requirements to complete gas service for the MVT to CLAS12.pdf<br></div><div><br></div><div data-marker="__QUOTED_TEXT__">There are 3 different pressure systems to look at for this. We should discuss them independently to avoid confusion.<br> <br> #1 -------- MVT Test Setup in EEL rm124 --------<br> <br> The 1st is the test setup for MVT in EEL rm 124. This uses pre-mixed cylinders of 10% C4H10 in argon gas. This is needed by 29 May. See the attached files MVT-P&I-EEL-0404-2017.pdf ( P&I diagram) and MVT-EEL-04-04-2017.xlsx (Components spreadsheet) This is needed in 30 days.<br> <br> The P&I diagram shows the test setup we plan to use. <b>There are unknown components contained in the box labeled MVT</b>. This contains the Saclay gas distribution piping, flow control, and of course the detector. The DA must have the details of what will be used. The DA requires all component information to make his assessment. <br> <br> #2 -------- FT Test Setup in Hall B -------<br> <br> Once the FT tracker is installed in Hall B, it will require gas for testing. This test setup will supply gas from the Hall B target gas pad behind the counting house into the hall using pre-existing gas lines. This uses pre-mixed cylinders of 10% C4H10 in argon gas. This will be needed once the FT is installed in July. See attached files FT-P&I-Hall-04-04-2017-Model.pdf (P&I diagram) and FT-Hall-04-04-2017.xlsx (Components spreadsheet)<br> <br> The P&I diagram shows the test setup we plan to use. <b>There are unknown components contained in the box labeled FT</b>. This contains the Saclay gas distribution piping, flow control, and of course the detector. The DA must have the details of what will be used. The DA requires all component information to make his assessment. <br> <br> #3 ------- MVT Gas Mixing and Supply in 96B Gas Shed ------<br> <br> For an overview of the mixing system, I have attached the powerpoint file MVT-GasMixingSystem-7-1-2016.pptx<br> <br> There are 2 gas mixtures required (1) 10% C4H10 in argon and (2) 10% CF4 10% C4H10 in argon. The two gas mixtures will be produced in the gas shed by the mixing system. The gas will flow from the gas shed to hall B in 2 pre-existing temperature controlled lines. The attached files; MVT-MIXING-10-25-2016.pdf, MVT Gas Mixing System Operators Manual Appendix.pdf, and MVT Gas Mixing System Operators Manual.pdf describe the system function and operation. This system will be required to be fully operational prior to 30 Sept 2017.<br> <br> The very basic P&I diagram, MVT-MIXING-10-25-2016.pdf, shows all the planned system components in 96B. The gas flows from 96b to the hall in 2 pre-existing 1/2" OD SS lines, ~ 300" in length. These lines end ~ 1/2 point of the South side of the space frame. From there, a 1/4" OD copper lines will connect to the MVT and FT gas distribution boxes, which distribute the gas to the individual detector locations. <b>There are unknown components contained in the FT and MVT gas distribution boxes that this mixing system supplies. </b>This contains the Saclay gas distribution piping, flow control, and of course the detector. The DA must have the details of what will be used. The DA requires all component information to make his assessment. <br> <br> Nothing has been purchased for this system, no money has been made available. Certain items tend to have longer lead times than others. MKS mass flow controllers and pressure transducers may require up to 4-6 weeks to arrive. Time must be allocated for pressure system evaluation, pressure test planning, OSP writing process, leak checking, and pressure testing. The system should be completely assembled no later than 30 Aug in order for testing to be completed by 30 Sept. All components should be in hand by 15 July.<br> <br> The critical path includes the following;<br> •Purchase Components<br> •Fabricate and Install Gas Shed Valve Panel<br> •Fabricate and Install scales and regulators for the C4H10 and CF4 Cylinders<br> •Fabricate and Install Controls Chassis and Cables<br> •Run tubing in Gas Shed to Connect Valve Panel to Temperature Controlled lines to Hall B<br> •Run tubing in Hall B to Connect Temperature Controlled lines to the MVT and FT Gas Panels<br> •Develop cRio Controls<br> •Test cRio Controls<br> •Test with Saclay and FT Gas Distribution Systems<br> <br> <br> <br><div class="moz-cite-prefix">On 4/26/2017 9:18 AM, Amrit Yegneswaran wrote:<br></div><blockquote cite="mid:608359539.1369579.1493212734231.JavaMail.zimbra@jlab.org"><div style="font-family: tahoma,new york,times,serif; font-size:
14pt; color: #009900" data-mce-style="font-family: tahoma,new york,times,serif; font-size: 14pt; color: #009900;"><div>so marc,<br></div><div>you are implying that <em>all needed components must be in hand by 6/15 to be ready for the 10/17 run.</em><br></div><div>so, guessing that the lead time to procure typical (usual, common, and reasonable) components is about 2 weeks, the DA should finish his initial analysis by 5/31.<br></div><div><br></div><div>DA initial analysis must finish by <strong><span style="color: rgb(255, 0,
0);" data-mce-style="color: #ff0000;">5/31.</span></strong><br></div><div>procure components <strong><span style="color: rgb(255, 0, 0);" data-mce-style="color: #ff0000;">6/1---6/15</span></strong><br></div><div>fabricate, install and test <strong><span style="color: rgb(255, 0,
0);" data-mce-style="color: #ff0000;">6/16-- 10/15</span></strong><br></div><div><strong><span style="color: rgb(255, 0, 0);" data-mce-style="color: #ff0000;"><br> </span></strong></div><div><span style="color: rgb(0,
0, 0);" data-mce-style="color: #000000;">could george and you please improve upon the time line, and e-mail the groups.</span></div><div><span style="color: rgb(0,
0, 0);" data-mce-style="color: #000000;">amrit </span></div><div><span style="color:
rgb(255, 0, 0);" data-mce-style="color: #ff0000;"><br> </span></div><div><span style="color: rgb(0,
0, 0);" data-mce-style="color: #000000;"><br> </span></div><div><br></div><hr id="zwchr"><div><b>From: </b>"Marc Mcmullen" <a class="moz-txt-link-rfc2396E" href="mailto:mcmullen@jlab.org" target="_blank" data-mce-href="mailto:mcmullen@jlab.org"><mcmullen@jlab.org></a><br> <b>To: </b><a class="moz-txt-link-abbreviated" href="mailto:dsg-mvt@jlab.org" target="_blank" data-mce-href="mailto:dsg-mvt@jlab.org">dsg-mvt@jlab.org</a>, <a class="moz-txt-link-abbreviated" href="mailto:dsg-ft@jlab.org" target="_blank" data-mce-href="mailto:dsg-ft@jlab.org">dsg-ft@jlab.org</a>, "Volker Burkert" <a class="moz-txt-link-rfc2396E" href="mailto:burkert@jlab.org" target="_blank" data-mce-href="mailto:burkert@jlab.org"><burkert@jlab.org></a>, "Bob Miller" <a class="moz-txt-link-rfc2396E" href="mailto:rmiller@jlab.org" target="_blank" data-mce-href="mailto:rmiller@jlab.org"><rmiller@jlab.org></a>, "Mac Mestayer" <a class="moz-txt-link-rfc2396E" href="mailto:mestayer@jlab.org" target="_blank" data-mce-href="mailto:mestayer@jlab.org"><mestayer@jlab.org></a>, "Maxime Defurne" <a class="moz-txt-link-rfc2396E" href="mailto:mdefurne@jlab.org" target="_blank" data-mce-href="mailto:mdefurne@jlab.org"><mdefurne@jlab.org></a><br> <b>Cc: </b>"Patrizia Rossi" <a class="moz-txt-link-rfc2396E" href="mailto:rossi@jlab.org" target="_blank" data-mce-href="mailto:rossi@jlab.org"><rossi@jlab.org></a><br> <b>Sent: </b>Wednesday, April 26, 2017 9:02:21 AM<br> <b>Subject: </b>[Dsg-mvt] Emailing - Requirements to complete gas service for the MVT to CLAS12.pdf<br></div><div><br></div><div>Good Morning,<br> <br> Attached are the requirements to complete the gas service for the MVT to <br> operate in Hall B. Additionally, preliminary cost estimates for the gas <br> system and controls have been attached.<br> <br> Regards,<br> <br> <br> -- <br> Marc McMullen<br> Detector Support Group<br> 757-269-7738<br> <br> <br> _______________________________________________<br> Dsg-mvt mailing list<br> <a class="moz-txt-link-abbreviated" href="mailto:Dsg-mvt@jlab.org" target="_blank" data-mce-href="mailto:Dsg-mvt@jlab.org">Dsg-mvt@jlab.org</a><br> <a class="moz-txt-link-freetext" href="https://mailman.jlab.org/mailman/listinfo/dsg-mvt" target="_blank" data-mce-href="https://mailman.jlab.org/mailman/listinfo/dsg-mvt">https://mailman.jlab.org/mailman/listinfo/dsg-mvt</a><br></div></div><br><fieldset class="mimeAttachmentHeader"></fieldset><br><pre>_______________________________________________
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</pre></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" data-mce-href="mailto:jacobsg@jlab.org">jacobsg@jlab.org</a>
(website) <a class="moz-txt-link-freetext" href="https://userweb.jlab.org/~jacobsg" target="_blank" data-mce-href="https://userweb.jlab.org/~jacobsg">https://userweb.jlab.org/~jacobsg</a><br data-mce-bogus="1"></pre><br></div></div></body></html>