[Pansophy] FW: LCLS-II-HE: Work Pause on Cryomodule Production at JLab and FNAL

[Valerie Bookwalter]

FYI

From: Adam Grabowski <adamg at jlab.org>
Sent: Wednesday, October 11, 2023 8:31 AM
To: Tony Reilly <areilly at jlab.org>; Mike Bevins <mbevins at jlab.org>
Cc: Andrei Seryi <seryi at jlab.org>; Kirk Davis <kdavis at jlab.org>; Philip Denny <denny at jlab.org>; John Fischer <fischer at jlab.org>; Michael Drury <drury at jlab.org>; E. Anne McEwen <mcewen at jlab.org>; Mike Spata <spata at jlab.org>; Valerie Bookwalter <bookwalt at jlab.org>
Subject: Re: LCLS-II-HE: Work Pause on Cryomodule Production at JLab and FNAL

Tony,

That is correct.


Adam Grabowski

SRF Test Engineer, L2HE Project CAM

Jefferson Lab
600 KELVIN DR Suite # 8

Mail Stop 55H
Newport News, VA 23606

O: 757-269-7665

C: 360-320-7003

E: adamg at jlab.org<mailto:adamg at jlab.org>

________________________________
From: Tony Reilly <areilly at jlab.org<mailto:areilly at jlab.org>>
Sent: Wednesday, October 11, 2023 7:37 AM
To: Mike Bevins <mbevins at jlab.org<mailto:mbevins at jlab.org>>; Adam Grabowski <adamg at jlab.org<mailto:adamg at jlab.org>>
Cc: Andrei Seryi <seryi at jlab.org<mailto:seryi at jlab.org>>; Adam Grabowski <adamg at jlab.org<mailto:adamg at jlab.org>>; Kirk Davis <kdavis at jlab.org<mailto:kdavis at jlab.org>>; Philip Denny <denny at jlab.org<mailto:denny at jlab.org>>; John Fischer <fischer at jlab.org<mailto:fischer at jlab.org>>; Michael Drury <drury at jlab.org<mailto:drury at jlab.org>>; E. Anne McEwen <mcewen at jlab.org<mailto:mcewen at jlab.org>>; Mike Spata <spata at jlab.org<mailto:spata at jlab.org>>; Valerie Bookwalter <bookwalt at jlab.org<mailto:bookwalt at jlab.org>>
Subject: Re: LCLS-II-HE: Work Pause on Cryomodule Production at JLab and FNAL

Mike, Adam,

I am taking this stoppage to affect all work centers with the exception of the ongoing work in the LERF.

Please correct me if I am wrong.

Thanks,
Tony
________________________________
From: Mike Bevins <mbevins at jlab.org<mailto:mbevins at jlab.org>>
Sent: Wednesday, October 11, 2023 7:06 AM
To: Stuart Henderson <stuart at jlab.org<mailto:stuart at jlab.org>>
Cc: Tony Reilly <areilly at jlab.org<mailto:areilly at jlab.org>>; Andrei Seryi <seryi at jlab.org<mailto:seryi at jlab.org>>; Adam Grabowski <adamg at jlab.org<mailto:adamg at jlab.org>>
Subject: Fwd: LCLS-II-HE: Work Pause on Cryomodule Production at JLab and FNAL

Stuart
Please see below the email received last night from SLAC.  I expect to learn more this am and will report back.
Regards
Mike




Michael E. Bevins, PE

JLab LCLSII-HE Senior Team Lead

(757) 269-7728 office

(757) 407-0238 cell

mbevins at jlab.org<mailto:mbevins at jlab.org>



Thomas Jefferson National Accelerator Facility

Newport News, Virginia USA

________________________________
From: Garcia, Fernanda G. <fgarcia at slac.stanford.edu<mailto:fgarcia at slac.stanford.edu>>
Sent: Tuesday, October 10, 2023 8:20 PM
To: Tug T Arkan <arkan at fnal.gov<mailto:arkan at fnal.gov>>; Mike Bevins <mbevins at jlab.org<mailto:mbevins at jlab.org>>
Cc: Hogan, John <jhogan at slac.stanford.edu<mailto:jhogan at slac.stanford.edu>>; Joshua Kaluzny <kaluzny at fnal.gov<mailto:kaluzny at fnal.gov>>; Adam Grabowski <adamg at jlab.org<mailto:adamg at jlab.org>>; Checchin, Mattia <mattiac at slac.stanford.edu<mailto:mattiac at slac.stanford.edu>>; Garcia, Fernanda G. <fgarcia at slac.stanford.edu<mailto:fgarcia at slac.stanford.edu>>; Fitzpatrick, Jarrod <jarrod at slac.stanford.edu<mailto:jarrod at slac.stanford.edu>>; Hays, Greg <haysgr at slac.stanford.edu<mailto:haysgr at slac.stanford.edu>>
Subject: [EXTERNAL] LCLS-II-HE: Work Pause on Cryomodule Production at JLab and FNAL


Dear Tug and Mike,

I am writing to inform you that I have declared a work pause on cryomodule assembly lines at both JLab and FNAL, effective immediately. This work pause does not impact cryomodules that are currently undergoing testing at LERF (JLab) or CMTF (FNAL).

Please ensure that before pausing work, all workstations are put in a safe condition. Please follow the safety procedures that are specific to your laboratory/workstation.

I am declaring this work pause because we have had four cryomodules that have required rework in the past few months:

  *   F26 - chipped ceramic
  *   F29 - beamline bellows damage
  *   J22 - vacuum leak - beamline and possible He process line (although not confirmed at CMTS)
  *   J23 - required warm-up while testing at LERF to mechanically repair a few components identified during the 2K testing at LERF - thermal cycle and retest required.

I believe that a work pause and a workshop are necessary to discuss the common themes and share the experiences from both production lines that have emerged from these issues. I have charged John Hogan to organize a one-day workshop with both partner labs and the SLAC team to come together, discuss the issues, and collectively find a path forward. I am strongly encouraging in-person attendance for this meeting, as it will allow for more productive and collaborative discussions. However, if necessary, a Zoom link will be made available for those who are unable to attend in person.

The work pause will remain in effect until the workshop has been held and a plan has been developed to address the root causes of the rework issues.

I understand that this work pause will be disruptive, but I believe it is necessary to ensure the quality and reliability of our cryomodule production.

Sincerely,

Fernanda G. Garcia




-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/pansophy/attachments/20231011/d4abd635/attachment-0001.html>