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Reports until 11:34, Tuesday 21 March 2023
H1 TCS
camilla.compton@LIGO.ORG - posted 11:34, Tuesday 21 March 2023 - last comment - 11:33, Monday 10 April 2023(68091)
TCS Chiller Water Level Top-Off - FAMIS 21117 - Bi-weekly

Closes FAMIS 21117. Last done in alog 67829 where Austin had to adjust the TCSX flow straighter and sock and add 850mL. 

  TCS X TCS Y
Previous Level 20.8 9.8
New Level 30.0 10.0
Water added 2500 mL (!!!) 50 mL

The Dixie cup had no signs of water in it.

CO2X chiller reservoir was nearly down to it's minium level!! I walked the chiller lines in the mechanical room and LVEA and saw no signs of a leak.

We'll check this chiller again this week and early next week. Could this be related to the power jump in CO2X from 35 to 49W (alog67787)?

Comments related to this report
thomas.shaffer@LIGO.ORG - 15:53, Thursday 23 March 2023 (68137)

Added another 550mL to get our level gauge from 28.5 to 30.0.

This seems like we are having to add too much water for what I'd expect after a chiller swap. It'd be worth opening the table and the chiller to look for leaks there.

camilla.compton@LIGO.ORG - 08:56, Thursday 30 March 2023 (68277)

On Monday TJ added 500ml and today I added 800ml. I opened the side of the CO2X chiller and couldn't see any sign of a new water leak. We'll plan to check the TCSX table for leaks on Tuesday. 

camilla.compton@LIGO.ORG - 11:33, Monday 10 April 2023 (68545)

Last week I checked on table (68356) and Ryan S walked the lines again, no sign of water. Corey added 700ml last Tuesday (68435) and today the level had not changed since. The issue seems to have resolved itself, maybe there was just a large bubble in the line... 

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