[Dsg-mvt] Going through mixing system to flush all detectors with argon during christmas holidays

[Marc McMullen]

Hi Maxime, 

You would need to talk with Todd and Bob, I don't know what the on-call situation is during the shutdown. 

If you decide to run the system with Argon, you might want to meet with Todd and make sure everything is hooked up to the tanks, he may have been trying to purge the c4h10 mfc. I would valve off the C4H10 mfcs, since we suspect the mix 1 may have been exposed to condensed gas. It may not be able to close all the way. The automatic controls are set to stop flow if the pressure in the tanks exceeds 20psi, however, if the c4f10 mfc still trickles through Argon then the hardware relief would be the only protection. Bob and Todd will know how this works. 

So I would not flow gas without discussing it with them first, and understanding the holiday shutdown protocol. 



Marc McMullen 
Physics Division 
Detector Support Group 
7738 


From: "mdefurne" <mdefurne at jlab.org> 
To: dsg-mvt at jlab.org 
Sent: Wednesday, December 20, 2017 6:07:33 PM 
Subject: [Dsg-mvt] Going through mixing system to flush all detectors with argon during christmas holidays 

Hi Marc, 

Can I use the "mixing" system but only with Argon to flush all detectors 
during Christmas holidays? 

Again merry christmas, 

Maxime 

_______________________________________________ 
Dsg-mvt mailing list 
Dsg-mvt at jlab.org 
https://mailman.jlab.org/mailman/listinfo/dsg-mvt 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/dsg-hallb_mvt/attachments/20171221/4c633c53/attachment-0002.html>