[Dsg-ft] [Dsg-mvt] Emailing - Requirements to complete gas service for the MVT to CLAS12.pdf

Fri Apr 28 11:04:40 EDT 2017

Marc,

My hope is that the MVT supply box components will be approved for use before arrival. Stephan supplied us with the info, I need to finish reviewing it to determine this. 

A leak test of the EEL supply portion of the system alone will be done after DSG assembles it. Another leak test of the EEL supply system connected to the MVT portion after installation/connection will be done as well. No analysis of the MVT supply box is required on arrival.

Matt

----- Original Message -----
From: "Marc McMullen" <mcmullen at jlab.org>
To: dsg-mvt at jlab.org, dsg-ft at jlab.org, "Volker Burkert" <burkert at jlab.org>, "Bob Miller" <rmiller at jlab.org>, "Mac Mestayer" <mestayer at jlab.org>, "Matthew Marchlik" <marchlik at jlab.org>
Cc: "Patrizia Rossi" <rossi at jlab.org>
Sent: Friday, April 28, 2017 10:34:30 AM
Subject: Re: [Dsg-mvt] Emailing - Requirements to complete gas service for the MVT to CLAS12.pdf

Hi Matt, 

I know you and Bob were planning to have a phone conference with Stephan Aune concerning the pressure systems analysis. In Georges' section #1 of the email attached, he refers to the Saclay distribution system (in bold print). Will this portion system be approved for gas flow upon arrival, or will there have to be an analysis done when it arrives. This info is critical with respect to the time frame of the Saclay scheduled activities/tests. DSG will be providing the premixed source of gas to the Saclay distribution, as long as the requirements have been met. 

Thanks, 

Marc 

On 4/26/2017 4:09 PM, George Jacobs wrote: 

There are 3 different pressure systems to look at for this. We should discuss them independently to avoid confusion. 

#1 -------- MVT Test Setup in EEL rm124 -------- 

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. 

The P&I diagram shows the test setup we plan to use. There are unknown components contained in the box labeled MVT . 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. 

#2 -------- FT Test Setup in Hall B ------- 

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) 

The P&I diagram shows the test setup we plan to use. There are unknown components contained in the box labeled FT . 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. 

#3 ------- MVT Gas Mixing and Supply in 96B Gas Shed ------ 

For an overview of the mixing system, I have attached the powerpoint file MVT-GasMixingSystem-7-1-2016.pptx 

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. 

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. There are unknown components contained in the FT and MVT gas distribution boxes that this mixing system supplies. 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. 

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. 

The critical path includes the following; 
•Purchase Components 
•Fabricate and Install Gas Shed Valve Panel 
•Fabricate and Install scales and regulators for the C4H10 and CF4 Cylinders 
•Fabricate and Install Controls Chassis and Cables 
•Run tubing in Gas Shed to Connect Valve Panel to Temperature Controlled lines to Hall B 
•Run tubing in Hall B to Connect Temperature Controlled lines to the MVT and FT Gas Panels 
•Develop cRio Controls 
•Test cRio Controls 
•Test with Saclay and FT Gas Distribution Systems 

On 4/26/2017 9:18 AM, Amrit Yegneswaran wrote: 

BQ_BEGIN

so marc, 
you are implying that all needed components must be in hand by 6/15 to be ready for the 10/17 run. 
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. 

DA initial analysis must finish by 5/31. 
procure components 6/1---6/15 
fabricate, install and test 6/16-- 10/15 

could george and you please improve upon the time line, and e-mail the groups. 
amrit 

From: "Marc Mcmullen" <mcmullen at jlab.org> 
To: dsg-mvt at jlab.org , dsg-ft at jlab.org , "Volker Burkert" <burkert at jlab.org> , "Bob Miller" <rmiller at jlab.org> , "Mac Mestayer" <mestayer at jlab.org> , "Maxime Defurne" <mdefurne at jlab.org> 
Cc: "Patrizia Rossi" <rossi at jlab.org> 
Sent: Wednesday, April 26, 2017 9:02:21 AM 
Subject: [Dsg-mvt] Emailing - Requirements to complete gas service for the MVT to CLAS12.pdf 

Good Morning, 

Attached are the requirements to complete the gas service for the MVT to 
operate in Hall B. Additionally, preliminary cost estimates for the gas 
system and controls have been attached. 

Regards, 

-- 
Marc McMullen 
Detector Support Group 
757-269-7738 

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-- 
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606

(office) 757-269-7115

(cell)   757-876-0480

(email) jacobsg at jlab.org (website) https://userweb.jlab.org/~jacobsg 

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BQ_END

-- 
Marc McMullen
Detector Support Group
757-269-7738