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

[Probir Ghoshal]

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.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/dsg-hallb_magnets/attachments/20210422/3b21c088/attachment.html>