Reports until 09:09, Tuesday 13 August 2024
LHO VE
david.barker@LIGO.ORG - posted 09:09, Tuesday 13 August 2024 - last comment - 12:58, Tuesday 13 August 2024(79529)
Tue CP1 Fill. Late start, only TC-A functioning

During the Tuesday maintenance reboots, zotvac0 did not shutdown properly, meaning the regular 08:00 did not run. Erik got the machine back and I rescheduled today's fill for 08:20

Tue Aug 13 08:29:17 2024 INFO: Fill completed in 9min 13secs

Gerardo confirmed a good fill curbside.

7min 20sec into the fill (1min 48sec before fill completion) TC-B failed. Its temperature reading went from  -52C to +1372C

The fill completed using TC-A. In the attachment, the TC-B line disappears due to it being an inverted log plot.

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david.barker@LIGO.ORG - 11:50, Tuesday 13 August 2024 (79532)
travis.sadecki@LIGO.ORG - 12:58, Tuesday 13 August 2024 (79534)

TC-B was replaced following this failure.  One of the leads was broken and the other had very little insulation remaining, so it was swapped with a new one.  I wrapped TC-A together with TC-B with electrical tape in the most damage-prone area at the bend entering the exhaust line.  

I also closed FRS 30032 which requested that this TC be swapped.

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