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Reports until 17:35, Wednesday 21 August 2024
LHO VE
janos.csizmazia@LIGO.ORG - posted 17:35, Wednesday 21 August 2024 - last comment - 17:37, Wednesday 21 August 2024(79637)
8-21 vent vacuum diary
Today's activities:

- The large LVEA turbos (OMC, X-manifold, Y-manifold) have been valved out
- The large Gate Valves (GV5 and GV7) have been opened
- The large turbos have been switched off - see their statistics in the comments
- The HAM6 RGA bakeout is being ramped down. Tomorrow it should be ready to be valved in, and make the 1st scan.

Tomorrow the whole FCT will be valved together with the corner, so everything will go back to normal. The reason why it will only be done tomorrow is that the pressures of the corner need some time to catch up with HAM7

The pressures:
Corner (PT-120 and PT131): 7.5E-8 Torr
HAM6: 2.5E-7 Torr
HAM7: 7.45E-8 Torr
CP1: ~3E-8 Torr
CP2: ~5E-8 Torr
Comments related to this report
janos.csizmazia@LIGO.ORG - 17:37, Wednesday 21 August 2024 (79638)
LVEA Turbos:

OMC Turbo station
Turbo hours: 6320
Scroll pump hours: 6274
Bearing life: 100%


X-manifold Turbo station
Turbo hours: 2348
Scroll pump hours: 2346
Bearing life: 100%


Y-manifold Turbo station
Turbo hours: 1791
Scroll pump hours: 3118
Bearing life: 100%
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