[Pansophy] Fw: C75 Pair 4 decsision

[Valerie Bookwalter]

________________________________
From: E. Anne McEwen <mcewen at jlab.org>
Sent: Tuesday, September 29, 2020 9:11 AM
To: George DeKerlegand <georged at jlab.org>; Earl Mosby <mosby at jlab.org>
Cc: Liang Zhao <lzhao at jlab.org>; Valerie Bookwalter <bookwalt at jlab.org>; Jacob Harris <jharris at jlab.org>
Subject: C75 Pair 4 decsision




Hi Aaron & Earl



FYI- The conclusion was to tear down the Pair 4 which was leaking (some quick photos  attached from this mornings 8:30 meeting )



The project will be interested to get the flange flatness and other measurements once it is apart



There are a few theories – however the discussion mainly was that the bolts torque now might be too high now – so it will be an engineering decision  (see “bright “ areas in photos at the flanges Bolts)



I am sure there will be more to come – however when Pair 4 arrives to the CMM – it should be treated as a high priority



“Stay Tuned” …..     Thanks Anne

_______________________________________________________________________________

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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