[Sbs_gems] [EXTERNAL] Re: Re: Re: Argon/Carbon Dioxide gas cylinders to move to to gas shed 90A

[Brad Sawatzky]

Hi Zeke,

Just don't get fooled by the rack of partially full bottles in the Hall
A racks.
>  I don't think there are any more (useful) premix bottles in the
>  Hall A racks.  Those that are left are partials -- I checked a
>  few of them and they only have 400--500psi in them.  Hardly
>  worth the effort to move them given the GEM gas consumption
>  rate.

If someone can do a count and perhaps send a photo of the bottles
in the Test Lab rack we can get the Techs to help move them over.
(I can do this tomorrow, as long as I know what I'm allowed to grab.)

-- Brad

On Mon, 06 Dec 2021, Ezekiel Wertz wrote:

> I'll check the Hall A gas shed when I go over for the RC meeting. To
> see if any are there.
>
> Zeke
>
> On Mon, Dec 6, 2021 at 2:35 PM Holly Szumila-Vance <[1]hszumila at jlab.org>
> wrote:
> 
>   Yes there's several in the test lab rack. Maybe like 4 or 6 (can't
>   remember off the top of my head).
> 
>   However, we need to see what is over at the Hall-there should be more
>   premix over there.
> 
>   From: Brad Sawatzky <[2]brad at swatter.net>
>   Reply-To: "[3]brad at swatter.net" <[4]brad at swatter.net>
>   Date: Monday, December 6, 2021 at 2:34 PM
>   To: John Boyd <[5]jab7bp at virginia.edu>, Brad Sawatzky <[6]brads at jlab.org>
>   Cc: Holly Szumila-Vance <[7]hszumila at jlab.org>, Mark Jones
>   <[8]jones at jlab.org>, Jack Segal <[9]segal at jlab.org>,
>   "[10]sbs_gems at jlab.org" <[11]sbs_gems at jlab.org>
>   Subject: [EXTERNAL] Re: [Sbs_gems] Re: Argon/Carbon Dioxide gas cylinders
>   to move to to gas shed 90A
> 
>   I don't think there are any additional premix near the Hall A gas shed,
>   other than the partials...
> 
>   Holly, are there more in a test lab rack?
> 
>   On December 6, 2021 11:23:38 AM EST, John Boyd <[12]jab7bp at virginia.edu>
>   wrote:
> 
>     I went to grab some gas from 90A and I realized that of the 6 cylinders
>     we moved into 90A on Friday, only 2 of them were pre-mix. The other 4
>     were pure Argon. I'm hoping that there are still 4 pre-mix cylinders
>     over at Hall A and that these 4 argon bottles were brought just
>     accidentally in place of them.
> 
>     Please let me know how to confirm this and proceed.
> 
>     Best,
> 
>     John
> 
>     On Thu, Dec 2, 2021 at 6:24 PM Brad Sawatzky <[13]brads at jlab.org> wrote:
> 
>       I moved six 75:25 premix cylinders to the EEL gas racks this
>       afternoon.
>       There are another 2--3 premix cylinders in EEL/125.  That is perhaps
>       ~2 weeks worth of gas for the SBS GEMs -- probably enough to cover
>       December.
> 
>       I don't think there are any more (useful) premix bottles in the Hall A
>       racks.  Those that are left are partials -- I checked a few of them
>       and
>       they only have 400--500psi in them.  Hardly worth the effort to move
>       them given the GEM gas consumption rate.
> 
>       * Holly or Jack:  I will leave it you two to coordinate and purchase
>           more premix if needed.  I think we all got the recent email from
>           Purchasing that the (official) lead-time is now 21 days for most
>           premix.  If we want premix gas for January, we should probably
>           order ASAP.  (Unless there are orders that just haven't shown up
>           yet?)
> 
>       The current plan is to switch to nitrogen over the holiday
>       break.  That may require one person to come on-site at the end
>       of Dec to swap a bottle.  John will contact Mark, et to ensure
>       at least he and one other GEM expert are on the 'Holiday access
>       list' so they can take care of this.
> 
>       -- Brad

-- 
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