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

[Jack Segal]

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
> 

-- 
John(Jack) Segal
Halls A and C Spectrometer Support Manager
Thomas Jefferson National Accelerator Facility
12000 Jefferson Avenue
Suite 12
Newport News, VA 23606-4486
Phone: (757) 269-7242
Cell: (757) 320-9977