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Reports until 15:02, Wednesday 05 July 2017
LHO VE
chandra.romel@LIGO.ORG - posted 15:02, Wednesday 05 July 2017 - last comment - 15:06, Wednesday 05 July 2017(37336)
HAM 11,12 outer o-ring leaks

After Kyle attempted to tighten HAM 11 and 12 south door bolts (they were already tight) last week, I leak checked the annulus again. Leak is still e-5 Torr-L/s of He range on HAM 11 south door. I didn't thoroughly check HAM 12 door again since background was high. Last week it measured e-7 Torr-L/s of He range. Connected aux cart and leak checker with hung turbos to HAM 11 and 12 and approached ~1e-5 Torr by noon. HAM 11 AIP still read overpressure with aux cart assistance. HAM 12 AIP read 6 mA range with assistance and 7 mA with aux carts valved out. I turned both AIPs off to preserve them, until we can vent the diagonal to remove and repair the door seals.

Comments related to this report
chandra.romel@LIGO.ORG - 15:06, Wednesday 05 July 2017 (37337)

Looks like we replaced HAM 11 AIP in May AND Nov. 2016?!

https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=31724

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