corey.gray@LIGO.ORG - posted 09:48, Saturday 01 July 2023 - last comment - 10:11, Saturday 01 July 2023(70997)
Possible Power Glitch At 1622utc
While dealing with rung up violins, we had a lockloss at 16:22:16utc which tripped EX & EY HEPI & ISIs, but at the same time I also noticed a flash in the Control Room lights (kind of similar to Ryan C's experience (alog70829) 5-days ago.
Attaching a look at the EX MAINS (need to find EY & CY....I couldn't find those channels when I swapped EX for those building) :0/
But the EX MAINS step at 16:22:16utc, does not seem too out of the ordinary and occurs every few hours. At any rate, I will work on restoring next.
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Richard phoned in to confirm a power glitch because he received a notice of a quick switch to UPS power for the MSR.
What Else:
- DIAG MAIN says: EX (&EY) pressure is out of range.
- I'm in contact with Jim (he is now my "buddy")
- Jim has logged into both end stations and confirmed they (HEPI computers?) are down, so I will need to go down to each end station to hit a RESET button.