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

[Ezekiel Wertz]

Hi Brad,

That's a good point. But I did know that Jack had found partials a while
ago. I did check the Hall A gas shed and it looks like everything that had
Holly's name on it got moved. So at first glance it seems like the correct
bottles were moved. But I'll get with someone who has access to 90A and
look at those bottles. I'm just curious how premix was ordered and we got
just Argon.

Zeke

On Mon, Dec 6, 2021 at 4:05 PM Brad Sawatzky <brads at jlab.org> wrote:

> 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
>
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