[Dsg-rich] RICH aerogel dry-box moved to EEL 124, will be purged with N2 during power outage

[Tyler Lemon]

Hello Marco, 

Since the power came back some time in the middle of the night, we were not able to see what the internal humidity of the dry-boxes were at that time. 

When I came in this morning to move the aerogel back to the small cleanroom, the small dry-boxes were at 0.5% and the large one in EEL 124 was at 4.5% according to their front displays. 

All tiles have been placed back into the small dry-box in the gowning room of the DSG small cleanroom. The internal humidity is at 0.5%. 

The gas bottle we used overnight has also been disconnected and moved back to EEL 125. 

Best regards, 
Tyler 


From: "Marco Contalbrigo" <mcontalb at fe.infn.it> 
To: "Tyler Lemon" <tlemon at jlab.org> 
Cc: "dsg-rich" <dsg-rich at jlab.org> 
Sent: Wednesday, May 9, 2018 4:27:20 AM 
Subject: Re: [Dsg-rich] RICH aerogel dry-box moved to EEL 124, will be purged with N2 during power outage 

Hi Tyler, 
thanks for the care. If possible, I suggest you check the humidity 
level of the small dry-boxes at restart (should be visible from the 
display). This will give us an idea of their condition stability 
during power outgaes. 
Thanks, Marco. 

On Tue, 8 May 2018, Tyler Lemon wrote: 

> Hello, 
> 
> As noted in the email below from Facilities Management, there will be a planned 
> power outage in the EEL from Tuesday May 8 at 5:30PM to Wednesday May 9 at 3:30AM. 
> 
> To make sure that the aerogel tiles we have on hand for RICH are kept in a low 
> humidity environment, all tiles have been moved to the large dry box in EEL 124 and 
> are being purged with nitrogen from a gas bottle. 
> 
> Wednesday morning, the tiles will be moved back to the small dry-boxes in the small 
> cleanroom. 
> 
> Best regards, 
> Tyler 
> 
> ___________________________________________________________________________________ 
> From: "JLab Communications Office" <JLAB_Communications-office at jlab.org> 
> To: tlemon at jlab.org 
> Sent: Thursday, May 3, 2018 1:08:28 PM 
> Subject: JLab Power Outage Planned for May 8; No Building Access During Outage 
> 
> JLab Power Outage Planned for May 8; No Building Access During Outage 
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> SUBJECT: JLab Power Outage Planned for May 8; No Building Access During Outage 
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