Reports until 12:34, Saturday 02 December 2023
H1 General (SEI, SUS)
anthony.sanchez@LIGO.ORG - posted 12:34, Saturday 02 December 2023 (74545)
Saturday Day shift Large Earthquake Recovery Report

Ok First thing I did is start trying to get things into a safe state.
ETMX was in a bad SEI State, due to ISI being tripped and HEPI being tripped.
Simply resetting the watchdog on the HEPI didnt work because the Hardware WatchDog was tripped:  H1:SUS-ETMX_HWWD_TTF_MIN
This also stopped me from untripping the following:
H1:IOP-SUS_ETMX_DACKILL_STATE
H1:IOP-SEI_ETMX_DACKILL_STATE

While talking with Dave, Jim, And Fil about the Sequence that these things need to be turned back on.
noticed that the DCPD screen was showing an increase in light on the PDs. I snapped a before picture of the DCPD screen.
I went down to the End station to Reset the Hardware Watchdog while on teamspeak with Dave.

I took pictures of the Hardware Watchdog and the CoilDriver chassis before I touched anything.
Simply pushing and holding the Fault Reset button resets the Hardware watchdog. 
From there, I could reset the ISI and then the HEPI.
Coming back to the control room the ring up had been stopped.


Over the course of the morning 12 earthquakes have rolled through. 3 of which have been over 6.0 Magnitude.
 

Images attached to this report