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Reports until 16:53, Tuesday 17 March 2015
LHO VE
kyle.ryan@LIGO.ORG - posted 16:53, Tuesday 17 March 2015 (17313)
Replaced HAM1 and HAM2 annulus ion pumps
Kyle, Gerardo

Legacy pumps long past their nominal life expectancy -> Damaged knife edge of 2 1/2" O-ring isolation valve at HAM2 ion pump attempting to align flanges which were kept sprung misaligned by rigid non-perpendicular piping -> Had to remove damaged valve and replaced it with an elbow (will repair valve in house and keep as spare) -> Leak tested new joints -> Will now need to pump with pump carts for a few more days before energizing new ion pumps.  

Note: HAM1/HAM2 annulus volume was fully vented for a period of time -> no pressure change in Corner Station
Displaying report 1-1 of 1.