chandra.romel@LIGO.ORG - posted 11:24, Friday 04 May 2018 (41843)
Three corner purge air ports decoupled
The only purge air pathway now is the one near HAM 4 on OMC. I decoupled those on XBM, YBM, and IMC - they are blanked off and the metal valve is open and ready for rough pump down.