[Dsg-ft] nitrogen purge

[George Jacobs]

I would hope so. There is already a N2 purge setup for the SVT in the excepted pressure system folder. But, it's not exactly the same. 

George 


From: "Raffaella De Vita" <Raffaella.Devita at ge.infn.it> 
To: "Amrit Yegneswaran" <yeg at jlab.org>, "George Jacobs" <jacobsg at jlab.org>, dsg-ft at jlab.org 
Cc: "Raffaella De Vita" <Raffaella.Devita at ge.infn.it> 
Sent: Sunday, May 7, 2017 4:04:27 PM 
Subject: Re: [Dsg-ft] nitrogen purge 

Dear George and Amrit, 
thanks for the feedback. For the quick check we want to do, canned air 
maybe the way to go. We will try tomorrow. 
However to be able to operate the calorimeter for a more complete test, 
we would really need to restore the nitrogen purge. We will talk to Bob 
Miller tomorrow to see if we can have a DA assigned. Based on what you 
explained to us some time ago concerning pressure systems, if we use a 
bottle with a pressure regulator and an orifice, it should be reasonably 
simple to get the analysis done, right? 
Thanks again, 
Raffaella 


Amrit Yegneswaran wrote: 
> Hi, Perhaps we could use the compressed air line, unfortunately this 
> could contain moisture ,oil and junk.Or one could use canned air. 
> Amrit ----- Original Message ----- From: George Jacobs To: Raffaella 
> De Vita Cc: dsg-ft at jlab.org Sent: Fri, 05 May 2017 16:02:30 -0400 
> (EDT) Subject: Re: [Dsg-ft] nitrogen purge This will require a 
> pressure systems design authority (DA) to perform the analysis, fill 
> out the documentation, and make a determination if it can be used. 
> This will require a P&I diagram and a spreadsheet listing all 
> components to be used in the test setup, pressure and volume of gas, 
> etc. First you need to find a pressure systems DA and ask them if they 
> will be the DA for your test setup. I know it seems like much to do 
> about nothing, but our hands are tied. The ASME pressure system 
> requirements must be followed. George From: "Raffaella De Vita" To: 
> "George Jacobs" , dsg-ft at jlab.org Sent: Friday, May 5, 2017 12:11:40 
> PM Subject: nitrogen purge Dear George, we are in the process of 
> re-closing the forward tagger calorimeter to prepare for this summer 
> installation. We would like to test quickly the circuit for the 
> nitrogen purge using a nitrogen bottle in the EEL building. It would 
> be a very quick test just to make sure the circuit is mounted 
> correctly before proceeding with the rest of the assembly procedure. 
> Would it be possible to do it today? Sorry for the very short notice! 
> Best regards, Raffaella -- George Jacobs Physics Detector Support 
> Group Jefferson Lab 12000 Jefferson Ave. STE 12 Newport News, VA 23606 
> (office) 757-269-7115 (cell) 757-876-0480 (email) jacobsg at jlab.org 
> (website) https://userweb.jlab.org/~jacobsg 

-- 
George Jacobs 
Physics Detector Support Group 
Jefferson Lab 
12000 Jefferson Ave. 
STE 12 
Newport News, VA 23606 

(office) 757-269-7115 

(cell) 757-876-0480 

(email) jacobsg at jlab.org 

(website) https://userweb.jlab.org/~jacobsg 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/dsg-hallb_ft/attachments/20170508/46002a5b/attachment-0002.html>