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Reports until 15:09, Friday 12 December 2025
LHO VE
jordan.vanosky@LIGO.ORG - posted 15:09, Friday 12 December 2025 (88499)
GV5 & GV7 Hard Closed

Per WP 12926

GV-7 & GV-5 hard closed at 14:16 PST and 14:34 PST respectively. Metal valve to gate annulus opened as well.

PT-114 and PT-134 pirani interlocks tripped while I was nearby opening the annulus valves. I have re-renabled them from the control room.

FC-V3 (BSC3) and FC-V4 closed as well to isolate the FCT.

Plot of PT-120B (BSC2), PT-124B (CP-1) and PT-144B (CP-2) during valve closure attached.

Images attached to this report
Displaying report 1-1 of 1.