Kyle, Gerardo 

~1000 - 1315 hrs. local 

~1540 - 1720 hrs. local 

Sprayed CF flanges between Y-1 and Y-2 excluding GV9,10,11 and 12 lead screw nipples (purposefully excluded lead screw bellows too)

SETUP
Y-mid turbo backed by LD (QDP80 running but valved-out) 6 x 10-8 torr*L/sec external calibrated leak measured 7 x 10-8 torr*L/sec  - 4-5 LPM helium flow for 25 - 100 second dwell - indicated Helium background initially at 9 x 10-9 torr*L/sec fell steadily during testing eventually going off scale < 10-11 torr*L/sec.  

RESULTS
Looked like a response when spraying near closed vent/purge valve (high pressure, O-ring side) but couldn't duplicate after lunch.  Soft-cycled IP9 isolation valve - pressure went up when closed.

Shut down pumps and leak detector - Leaving turbo controller on overnight to ensure rotor stays levitated until at rest