[dsg-hallb_rich] [EXTERNAL] 1 MAJOR alarm(s): GAS (fwd)

[Marco Contalbrigo]

Dear Tyler and Bob,
thank you. I assume HV and LV was also off at
that time. Then everything should be ok.
Have a nice Christmas time, Marco.

On Tue, 21 Dec 2021, Bob Miller wrote:

> The RICH compressor has been turned off for the break.
> 
> Bob
> 
> _______________________________________________________________________________________________________________________________
> From: Tyler Lemon <tlemon at jlab.org>
> Sent: Tuesday, December 21, 2021 10:03 AM
> To: Marco Contalbrigo <mcontalb at fe.infn.it>; Bob Miller <rmiller at jlab.org>
> Cc: dsg-hallb_rich at jlab.org <dsg-hallb_rich at jlab.org>; Mirazita Marco <marco.mirazita at lnf.infn.it>
> Subject: Re: [EXTERNAL] 1 MAJOR alarm(s): GAS (fwd)  
> Hi Marco,
> 
> It looks like the air-cooling compressor was turned off since both airflow values and the pressure in the buffer tank have all
> dropped to ~zero. I'm guessing/hoping that this was done intentionally since from logbook entries, physics data taking has
> concluded in preparation for the Christmas shutdown.
> 
> As a side note, I can see that everything else is still working right, and that RICH is still getting ~40 slm of nitrogen.
> 
> Hi Bob,
> Has the RICH compressor been turned off? If this isn't intentional, do you have any news as to the cause?
> 
> Thanks!
> Tyler
> 
> 
> _______________________________________________________________________________________________________________________________
> From: Marco Contalbrigo <mcontalb at fe.infn.it>
> Sent: Tuesday, December 21, 2021 9:54 AM
> To: Tyler Lemon <tlemon at jlab.org>
> Cc: dsg-hallb_rich at jlab.org <dsg-hallb_rich at jlab.org>; Mirazita Marco <marco.mirazita at lnf.infn.it>
> Subject: [EXTERNAL] 1 MAJOR alarm(s): GAS (fwd)  
> Ciao Tyler,
> if I am not mistaken, Valery is on vacation. I and
> Marco are travelling today. May you (or DSG) follow
> the issue with the RICH interlock ?
> Thanks, Marco.
> 
> ---------- Forwarded message ----------
> Date: Tue, 21 Dec 2021 09:00:24 -0500
> From: clas12-alarm-notifier at jlab.org
> To: mcontalb at fe.infn.it
> Subject: 1 MAJOR alarm(s): GAS
> 
> PV: B_DET_RICH_INTLK_AIRFLOW2 - Description: MAJOR alarm: B_DET_RICH_INTLK_AIRFLOW2 - Alarm Time: 2021/12/21 09:00:23.981 -
> Current Severity: MAJOR - Current Status: LOLO_ALARM - Alarm Severity: MAJOR - Alarm Status: LOLO_ALARM - Alarm Value:
> 199.9060156932005
> 
> 
>