TITLE: 12/05 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 147Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:

IFO is in NLN and OBSERVING (~11 hr lock).

1:23 UTC - Alarms going off on the EX and EY Chillers despite systems looking normal. This is potentially as a cause of a recent chiller temp issue, though the alarms persist since the temperature recovery. Keeping an eye on it (no alarms from my workstation). Due to the temperature fluctuating at the alarm threshold degree for the EX chiller supply, Dave changed the threshold from 50F to 55F (alog 74587). The same problem happened at EY and called Richard multiple times. The temperature is sitting between 49F and 50F (and triggering alarms it seems as it crosses). Dave later changed this to 55 too (alog 74589)

1:45 UTC - Jenne finished touching PR3 to address the clipping issues (alog 74581)

IY CHILLER 36 Hr Trend (screenshots).

Per alog 74563 (and other associated alogs), the screenshot shows a 36 hr trend of IY Chiller flow rates and process pressures. There don’t seem to be significant changes to the trends shown with the exception of IY CO2 Flowrate (green). There is a sharp peak that occured at around 6:45 UTC for only 2 seconds. The counts during this peak iincreased from 2.9 to 4.7 (~160%). The second and third screenshots illustrate how this peak looks compared to surrounding noise. There were no other significant deviations (from what I could tell). Tagging TCS.

LOG: