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

[Brad Sawatzky]

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 <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 <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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-- 
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