Reports until 17:21, Thursday 20 October 2011
LHO VE
kyle.ryan@LIGO.ORG - posted 17:21, Thursday 20 October 2011 (1596)
Gross leak found on BSC 8 feedthrough

Kyle, Gerardo

Found gross leak at electrical feedthrough ( > 1 x 10-3 torr*L/sec, can't measure directly as it is off of the usuable scale on the leak detector!) on the middle 12"/4.5" flange cluster on the south side of BSC8 -> Covered with tape and the YBM pressure fell off a factor of 10 and then assumed a nominal slope -> Bench tested a proposed replacement part and it was OK -> We may perform a round of sensitive testing tomorrow with the gross leak taped off and vent on Monday to replace the bad part.