[Pansophy] Fw: Mixed work centers : SNSPPU Pressure Relief Plate Assy traveler

[Valerie Bookwalter]

FYI
________________________________
From: E. Anne McEwen <mcewen at jlab.org>
Sent: Monday, November 7, 2022 9:21 AM
To: Michelle Oast <weinmann at jlab.org>; Ashley Anderson Mitchell <ashleya at jlab.org>
Cc: Valerie Bookwalter <bookwalt at jlab.org>; Jacob Harris <jharris at jlab.org>
Subject: Mixed work centers : SNSPPU Pressure Relief Plate Assy traveler


Hello All



Recently Earl brought to my attention another traveler where there are mixed work centers in the same traveler – while I realize PPU may be getting close to the end, it would never the less be nice if we could get this problem fixed, and come up with a systematic approach so that work centers are no longer being mixed  .  I agree completely with him that this is a problem when the work of other work centers is mixed into inspection work – we have no way to track parts once they leave our work center . He is correct this problem seems to be re-occurring  - we find mixed work centers on Inspection travelers quite often for other projects as well , so this problem is not limited to PPU



I am including Ashley in this discussion since she is the Project Co-coordinator for PPU   .  Do you think it is possible to put the leak/pressure test into a different traveler ?  I don’t mind to go through all the other projects & travelers and look for where we have mixed work centers occurring  in Inspection , of course this will then mean a new traveler will be needed for leak test



Thanks Anne





On 10/27/22, I emailed Michelle Oast about a potential problem in the SNSPPU Pressure Relief Plate Assy traveler for SN016. I started this traveler left it open

because there was a STEP2, "Adjust the PRPA to relieve at 1 psig." The inspection for me is visual and surface finish. The pressure test is performed by a

different department. The test did not get performed. I let Michelle know that I think the pressure test should have its own Traveler. This was my quote in the

email:

"This is an issue I have brought up before. I believe that putting a pressure sequence in the inspection traveler can cause issues.

1) The pressure setting can be overlooked and the part installed without the plate being set properly.

2) One traveler with 2 or more departments performing work is an issue if other departments don't fill out the traveler after the work is completed. This happens

a lot.



_______________________________________________________________________________

E. Anne McEwen

JSA / Jefferson Lab

SRF Institute

Newport News, VA 23606

Office: +1 (757) 269-5539

Email:   mcewen at jlab.org<mailto:mcewen at jlab.org>


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