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

[Brad Sawatzky]

Thanks Holly.  Sounds good.

On Sat, 04 Dec 2021, Holly Szumila-Vance wrote:

> I’ll order 8 premix now to tie us over until we can set up a mixing system. 
> 
> > On Dec 3, 2021, at 6:50 PM, Brad Sawatzky <brads at jlab.org> wrote:
> > 
> > I think a premix system for EEL/125 is definitely the way to go.
> > 
> > In the near term we have enough premix to cover us through December
> > (with a little stretching).
> > 
> > We'll need premix to cover us in January until the mixing system is
> > ready.  Unless there is an order already in the queue (Holly?), I think
> > that means we should order another 6--8 premix bottles now so they have
> > a chance of showing up late-Dec / early-Jan.
> > 
> > Even if the mixing system for the EEL can be online by January, it is
> > may be a good idea to have 6--8 bottles of premix in reserve either way?
> > 
> > -- Brad
> > 
> >> On Fri, 03 Dec 2021, Jack Segal wrote:
> >> 
> >> I was under the impression we would set up a mixing system in the EEL?
> >> 
> >>> On 12/2/2021 5:21 PM, Brad Sawatzky 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

-- 
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