Reports until 12:08, Tuesday 18 February 2020
LHO VE
kyle.ryan@LIGO.ORG - posted 12:08, Tuesday 18 February 2020 - last comment - 12:44, Tuesday 18 February 2020(55158)
HAM7/8 septum plate removed

Chris S., Bubba G., Scott L., Tyler G., Kyle R.

Purge air at maximum flow (dew point < -26C), crane hook used as fall protection tie-off when standing, rigid aluminum "shipping covers" installed on both HAM7 (O-rings) and HAM8 (no O-rings) flanges with C-3 soft covers used over the "capped" assembly to ensure dust protection -> note that the Class-B aluminum shipping covers only had provisions for every 3rd flange bolt.  This differs from the 84" shipping covers used on HAM11/12 which had provisions for every flange bolt.  O-rings which had been in septum flange were kept clean, bagged, labeled and stored.  O-rings in HAM7 flange were left in place. 

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chandra.romel@LIGO.ORG - 12:44, Tuesday 18 February 2020 (55159)

Good work, guys! With holes every third bolt, does it look like the shipping cover seals against the o-ring in all places?