[Dsg-rich] RICH N2 system automatic backup
Amrit Yegneswaran
yeg at jlab.org
Fri Dec 14 21:31:37 EST 2018
george,
thanks for addressing the matter so promptly.
goodnight and godbless
________________________________
From: Dsg-rich <dsg-rich-bounces at jlab.org> on behalf of George Jacobs <jacobsg at jlab.org>
Sent: Friday, December 14, 2018 4:52 PM
To: Bill Crahen; Tyler Lemon; Bob Miller; dsg-rich
Subject: Re: [Dsg-rich] RICH N2 system automatic backup
Hi William,
I will mark up the line sizes and materials on the diagrams as requested. I will also xref the granger part numbers with the manufacturer part numbers listed and supply those to you ASAP.
This is an add-on for the pre-existing RICH N2 purge panel on top of the Fwd carriage in Hall b. This permits using a back up gas supply in the event of loss of gas from the normal source. This will connect between the Hall B N2 gas supply system at MV17 and the RICH N2 gas panel.
I do not know if the RICH N2 gas panel has a pressure systems number or drawing number assigned. Bob Miller is the system owner, he may have that information.
The relief valve installed on the test setup is the same one that is used on the main panel. Please feel free to replace it with one of your preferance. The relief valve used on the test setup is only used for the bench leak and pnuematic valve operation test.
The only diagrams of these systems that I am aware of, are the one I have made. The N2 supply diagram, PS-PHY-17-001, B00000-10-00-0100, is attached to this email. Any changes made to the system after 21 Feb 2017 will not be shown on the diagram.
--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
(office) 757-269-7021
(cell) 757-876-0480
(email) jacobsg at jlab.org
(website) https://userweb.jlab.org/~jacobsg
________________________________
From: William Crahen <wcrahen at jlab.org>
Sent: Friday, December 14, 2018 2:43 PM
To: George Jacobs; Tyler Lemon; Bob Miller; dsg-rich
Subject: Re: [Dsg-rich] RICH N2 system automatic backup
George, I need more information about this system- please provide the following:
indicate line sizes and material on the diagram. I also need the corresponding attachment fittings information, manufacturer and part number. If the tubing is plastic, part numbers for the tube inserts if required by the manufacturer. The same information is needed on the parts list you provided- some are listing manufacturer info (Grainger is a distributor, not a manufacturer).
there is a relief valve on this system- where is the sizing calculation?
what is the pressure system number associated with this system?
where is this system physically located?
Are there actual mechanical drawings of this system?
On 12/14/2018 1:18 PM, George Jacobs wrote:
Please find attached files for the RICH N2 purge back-up supply.
--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
(office) 757-269-7021
(cell) 757-876-0480
(email) jacobsg at jlab.org<mailto:jacobsg at jlab.org>
(website) https://userweb.jlab.org/~jacobsg
________________________________
From: Dsg-rich <dsg-rich-bounces at jlab.org><mailto:dsg-rich-bounces at jlab.org> on behalf of Tyler Lemon <tlemon at jlab.org><mailto:tlemon at jlab.org>
Sent: Friday, December 14, 2018 12:40 PM
To: Bob Miller; Bill Crahen; dsg-rich
Subject: Re: [Dsg-rich] RICH N2 system automatic backup
Hello George,
Can you send Bob Miller and Bill Crahen the drawing, pressure systems numbers and any other documentation you have on the RICH N2 automatic back up?
Bill will be the DA for it.
Best regards,
Tyler
________________________________
From: Bob Miller <rmiller at jlab.org><mailto:rmiller at jlab.org>
Sent: Friday, December 14, 2018 9:25 AM
To: Tyler Lemon
Cc: Bill Crahen; Amrit Yegneswaran
Subject: Fwd: Re: [Dsg-rich] RICH N2 system automatic backup
Hi Tyler,
Please send the drawings, pressure systems number, and whatever documentation you have to Bill Crahen and myself.
Bill will be the DA on this project.
Regards,
Bob
-------- Forwarded Message --------
Subject: Re: [Dsg-rich] RICH N2 system automatic backup
Date: Wed, 12 Dec 2018 19:39:33 -0500
From: Amrit Yegneswaran <yeg at jlab.org><mailto:yeg at jlab.org>
To: Marco Contalbrigo <mcontalb at fe.infn.it><mailto:mcontalb at fe.infn.it>, Patrizia Rossi <rossi at jlab.org><mailto:rossi at jlab.org>, Bob Miller <rmiller at jlab.org><mailto:rmiller at jlab.org>
CC: dsg-rich <dsg-rich at jlab.org><mailto:dsg-rich at jlab.org>
bob,
please assign a design authority for the analysis and approval of the system.
thanks
amrit
________________________________
From: Dsg-rich <dsg-rich-bounces at jlab.org><mailto:dsg-rich-bounces at jlab.org> on behalf of Marco Contalbrigo <mcontalb at fe.infn.it><mailto:mcontalb at fe.infn.it>
Sent: Wednesday, December 12, 2018 3:33 PM
To: Patrizia Rossi
Cc: dsg-rich
Subject: Re: [Dsg-rich] RICH N2 system automatic backup
Dear Tyler,
thank to DSG for this nice upgrade!
Marco.
On Wed, 12 Dec 2018, Patrizia Rossi wrote:
> Very appreciated Christmas gift!! Thank you Tyler and DSG people!!
> Patrizia
>
> Sent from my iPhone
>
> On Dec 12, 2018, at 3:13 PM, Tyler Lemon <tlemon at jlab.org><mailto:tlemon at jlab.org> wrote:
>
> Hello,
>
>
> DSG has developed a system to automatically switch RICH to a back up
> bank of nitrogen in the event that Hall B's main nitrogen supply is
> stopped.
>
>
> The system is designed to use a pneumatic valve operated using the
>
> pressure from the main N2 supply line that will open if that supply
> pressure drops. The open pneumatic valve will then allow N2 to flow to
> RICH from a bank of nitrogen bottles. Attached is a revised RICH
> nitrogen system diagram showing the new automatic switch-over
> components.
>
>
> George has assembled the new components and DSG would like to test them
> at the beginning of next year after the holidays. To be able to do any
> sort of testing, the components and test procedure will need to undergo
> a pressure systems analysis by a Design Authority (DA).
>
>
> DSG will provide the necessary documentation to the DA once one is
> requested and assigned.
>
>
> Best regards,
>
> Tyler
>
> <RICH-N2-valve panel-REV2..pdf>
>
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