Reports until 16:59, Tuesday 21 August 2018
LHO VE
kyle.ryan@LIGO.ORG - posted 16:59, Tuesday 21 August 2018 - last comment - 13:38, Friday 11 January 2019(43571)
IP1 installed today but has air leak

Mark D., Tyler G., Chris S., Gerardo M., Kyle R.  

Gerardo M. and I leak tested the new CFF joints after the installation was done this morning and measured a 1.7 x 10-8 torr*L/sec helium leak at the Gate valve to chevron baffle spool joint ->  This joint is visibly "gappy" for a portion of its periphery even after subsequent re-torques -> looks like the gasket may have been out-of-round -> I shut down the pumps and leak detector but left everything in place.  We will redo this joint during the Aug. 28th maintenance period. 

 NOTE -  We will need to soft-close GV5 and GV7 and, thus, interrupt the IFO during the Aug. 28th maintenance day.  We will also need the South Crane for a few hours and will need to coordinate with the people who will be on site  doing the annual crane inspection during that day. 

Comments related to this report
stephen.appert@LIGO.ORG - 15:43, Thursday 10 January 2019 (46348)

Leak resolved in aLOG 43718

Did anyone track the serial number of the nipple or the baffle?

 

gerardo.moreno@LIGO.ORG - 13:38, Friday 11 January 2019 (46369)VE