[Sbs_gems] [EXTERNAL] Re: EEL Closure for the Following Two Weekends

[Brad Sawatzky]

Hi Walt,

Will the temp/humidity be monitored?  (How aggressive will the venting be?)

For example, it got down to 40F last night -- not freezing, but
certainly a larger temperature swing than I would prefer to expose
our detectors to in EEL/125.

How will the grinding dust be controlled?  I don't want it escaping
EEL/124 and plating out on the GEM layers in EEL/125 (for example).

-- Brad

On Wed, 03 Nov 2021, Walt Akers wrote:

> Good Morning:
> 
> During the next two weekends, Facilities will be grinding and refinishing
> the floor in the EEL cleanroom.  Because of the chemicals being used,
> the workers will be wearing full-face respirators and the building will be
> closed to staff and users.
> 
> The closure will be from 6:00 PM on November 5th to 6:00 AM on
> November 8th, and from 6:00 PM on November 12th to 6:00 AM on
> November 15th.
> 
> During that time there will be NO ACCESS to the building.
> 
> If there is a physical emergency that requires access to the building,
> please contact the guards at 269-5822.
> 
> If there is a technical emergency that requires access to the building
> (i.e., critical systems are offline, beam operations are halted and you
> have to access the EEL to resolve the issue) contact Walt Akers at
> 757/846-4810 or Bob Sperlazza at 757/310-4390.
> 
> Note:  The materials that are being used are standard two-part
> epoxies and Industrial Hygiene is exercising an abundance of caution.
> The building will be continuously vented and there should be no
> impact to sensitive equipment. Having said that, the building
> temperature is likely to vary in the Target Group high bay --- so
> temperature sensitive equipment should be safeguarded.
> 
> If you have questions...  send me an email.
> 
> As always, thanks for your patience.
> 
> Walt
> 

-- 
Brad Sawatzky (he/him), PhD <brads at jlab.org> -<>- Jefferson Lab/ Hall C/C111
Ph: 757-269-5947  -<>-  Fax: 757-269-5235  -<>- Pager: brads-page at jlab.org
The most exciting phrase to hear in science, the one that heralds new
  discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov