[Dsg-hallb_magnets] [New Logentry] Hall B LCW turned off; cannot perform interlock checks until flow restored

[Bob Miller]

Hi Probir,


The LCW work has been delayed until Wednesday, April 28th.  I will let 
you know as soon as it is on line.


Thanks

Bob



On 4/22/2021 2:04 PM, Probir Ghoshal wrote:
> Bob and Team,
>
> Since we have not heard anything about the LCW been restored in the hall.
> We are not planning any diagnostic test this week and postpone till I 
> hear from you all.
> Please let me know by Friday afternoon 1500 hrs if we can plan to come 
> over to carry out the diagnostic and checks that was planned this week 
> for the SC magnets.
> I will accordingly co-ordinate with the DSG team to help depending on 
> their availability next week.
> DSG - thanks for your help, will let you know the forward plan once i 
> hear from Bob M.
>
> Regards
> Probir
>
>
>
> ------------------------------------------------------------------------
> *From:* Probir Ghoshal <ghoshal at jlab.org>
> *Sent:* Wednesday, April 21, 2021 2:28 PM
> *To:* Tyler Lemon <tlemon at jlab.org>; Bob Miller <rmiller at jlab.org>; 
> Krister Bruhwel <bruhwel at jlab.org>
> *Cc:* Magnet Group <magnetgroup at jlab.org>; Marco Battaglieri 
> <battagli at jlab.org>; dsg-hallb_magnets at jlab.org 
> <dsg-hallb_magnets at jlab.org>; Patrizia Rossi <rossi at jlab.org>; Calvin 
> Mealer <mealer at jlab.org>; Denny Insley <dinsley at jlab.org>
> *Subject:* Re: [Dsg-hallb_magnets] [New Logentry] Hall B LCW turned 
> off; cannot perform interlock checks until flow restored
> Thanks Tyler, Pablo for coming in the hall and did the best you can do.
> The controlled power on Solenoid is in place and will be in place till 
> we complete the solenoid checks first.
> Once we are satisfied and completed, we shall move the controller 
> power to the torus MPS (Krister will do that when we complete the work 
> on Solenoid).
> The MPS (both) are locked and tagged by Krister. He will be available 
> to do that independent of us.
> I will let you know once we are ready to start checks. You can 
> remotely clear the interlocks before you start from home just to check.
>
> Bob, Krister, Calvin - I will wait to hear from either of you once the 
> LCW is restored in the hall and we can do the checks as required 
> clearing the faults.
>
> Regards
> Probir
>
> *Probir K Ghoshal*, PhD.
> Senior Magnet Engineer
> Magnet Group, Experimental Nuclear Physics
> /Jefferson Lab
> 600 Kelvin Drive, Suite #3, 55C
> Room #2531, Newport News, VA 23606 (USA)/
>
> Telephone: 757 269 6702 (office)
> Mobile: 518 334 3289
> email: ghoshal at jlab.org
>
>
>
> ------------------------------------------------------------------------
> *From:* Dsg-hallb_magnets <dsg-hallb_magnets-bounces at jlab.org> on 
> behalf of tlemon at jlab.org <tlemon at jlab.org>
> *Sent:* Wednesday, April 21, 2021 2:10 PM
> *To:* dsg-hallb_magnets at jlab.org <dsg-hallb_magnets at jlab.org>
> *Subject:* [Dsg-hallb_magnets] [New Logentry] Hall B LCW turned off; 
> cannot perform interlock checks until flow restored
>
>
>   Hall B LCW turned off; cannot perform interlock checks until flow
>   restored <https://logbooks.jlab.org/entry/3874360>
>
>   * Edit
>     <https://logbooks.jlab.org/entry/3874360/edit?destination=email/send>
>   * Delete
>     <https://logbooks.jlab.org/entry/3874360/delete?destination=email/send>
>
> Lognumber 3874360 <https://logbooks.jlab.org/entry/3874360>. Submitted 
> by tlemon <https://logbooks.jlab.org/user/tlemon> on Wed, 04/21/2021 - 
> 14:09 
> <https://logbooks.jlab.org/entries?start_date=1619024972&end_date=1619032172&book=DSGLOG&book=HBSOLENOID>. 
>
>
> Logbooks: 	DSGLOG <https://logbooks.jlab.org/book/dsglog> HBSOLENOID 
> <https://logbooks.jlab.org/book/hbsolenoid>
> Entry Makers: 	campero, ghoshal
>
> Hall B LCW is turned off for work on the system.
>
> Without LCW flow, internal MPS interlocks cannot be cleared. This 
> interlock is internal to the MPS and cannot be bypassed. The interlock 
> checkout procedure requires all interlocks to be clear before starting 
> the checks.
>
> Interlock checkout will be continued once LCW flow is restored.
>
-- 
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 822-9586

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