[Esr-users] Halls Helium outages

[Dave Kashy]

Hi Steve,
The planned work is for three day shifts and will shutdown all Supply Helium so all 3 Halls will be shut off at the same time each day.
Please make plans to have acceptable impact on Hall C. I am willing to help in any way I can including coming in or staying late to help or to help by remote login if you show me how.

Thanks
Dave


----- Original Message -----
From: "Steve Lassiter" <lassiter at jlab.org>
To: "kashy" <kashy at jlab.org>
Cc: "jwilson" <jwilson at jlab.org>, "esr-users" <esr-users at jlab.org>, "Christopher Perry" <cperry at jlab.org>
Sent: Friday, June 8, 2018 1:16:12 PM
Subject: Re: Halls Helium outages

Hi, 

Hall C has magnets running off of the HXs to keep their temps below 100K. Turning off and on the 300K for 8 hours for three days straight will be rather bothersome as this would require stopping and starting the HXs each day. It may be better to keep the 300K off for the whole duration, but three days is a long period. 
Is it that each hall will only be turned off one of the three days? If this is the case, then it is not a problem to HallC. 

Steven 


----- Original Message -----

From: "Dave Kashy" <kashy at jlab.org> 
To: "Christopher Perry" <cperry at jlab.org>, lassiter at jlab.org 
Cc: "Joe Wilson" <jwilson at jlab.org>, esr-users at jlab.org 
Sent: Friday, June 8, 2018 11:59:24 AM 
Subject: Re: Halls Helium outages 

Hi Chris 
I know Halls B and C are using 4 atm helium. 

Hall B can go for the 3 days with out 4atm helium. 
Will we be able to float on recovery? 

Steve 
Will you want to go on and off or just 
Float like B? 

Dave 

Sent from my iPhone 

> On Jun 8, 2018, at 11:09 AM, Christopher Perry <cperry at jlab.org> wrote: 
> 
> Dave, 
> We will be performing work on the mass-in and mass-out valves at ESR which will result in 3 separate 8 hour disruptions in the 4 atm helium flow to the halls. The first 4 atm outage will occur Tuesday morning (June 12th) at 8:00 am. The following outages will occur on Wednesday (June 13th) at 8:00 am, and Thursday (June 14th) at 8:00 am. 
> 
> 
> Chris Perry 
> Mechanical Engineer 
> Cryogenics Group 
> Thomas Jefferson National Accelerator Facility 
> 12000 Jefferson Ave, Newport News, VA 23606 
> cperry at jlab.org 
> (757) 269-6157