WP#6255 and WP#6293 completed  

0930 hrs. local -> Valved-in RGA turbo to RGA volume and energized filament.  

1130 hrs. local -> Took scans of the RGA volume with and without cal-gases -> isolated RGA turbo from RGA volume -> combined RGA volume with X-end volume and took scans of the X-end with and without calibration gases (inadvertently dumped ~5 x 10-4 torr*L of Krypton or 2 hrs accumulation @ 5 x 10-8 torr*L/sec into site) -> vented RGA turbo and removed from RGA hardware -> installed 1 1/2" UHV valve in its place -> Pumped volume between two 1 1/2" valves to 10-4 torr range before decoupling and de-energizing all pumps, controllers and noise sources with the exception of the RGA electronics which was left energized and with its fan running 24/7.

Leaving RGA exposed to X-end, filament off and cal-gases isolated.  Will post scan data as a comment to this entry within next 24 hrs..