I noticed that the pressure in the LVEA spiked up several hours ago, see attachment, typical behavior of a turbo pump turning off.  Drove to the site and found the output tube main turbo pump off, this system was isolated from the main volume first, then the turbo system was restored; scroll pump running, small turbo up to speed, and main turbo pump up to speed, only then the turbo system was valved in to the main volume.  Nothing out of the ordinary was found or noted.  As of now no power glitches have been reported.