J. Kissel, J. Rollins, S. Dwyer, A. Staley While Sheila and Alexa began to lock PRMI on carrier, the HAM2 and HAM3 HEPI and ISIs tripped for an unknown reason. We'll leave this to people offline to figure out what happened. See attached actuator trip plots from the ISIs.
Again with the tripping. Only HEPIs this time. Only in the vertical direction.
Now can't bring up HAM2 or HAM3 HEPIs with out tripping. Took a look at HEPI pump controller -- the screen's not very non-expert friendly, but there's a red light at the pressure indicator ...
Pump System is fine--80psi at the output.
Sorry about the medm--been waiting for the long promised Beckoff system to upgrade channels etc. The Red light is the reservoir level, not pressure; the level switch is not hooked up to system.
This issue was (sadly) resolved with a restart of front-end processes; see LHO aLOG 13858. If DetChar's bored they can help CDS trace the problem by grabbing the exact time of failure. SEI Team -- is the CDS state word used in computing the "you have the ability to drive" outer ring of green?
Jeff--The first step of the out ring of the HEPI medm not being green is to go orange or something like that. This means only that the HEPI L4C have seen some saturations and the counter is no longer zero. The system is still operating normally even though the medm perimeter is not green.
I don't think this is used to calculate the ODC state bit--I'll investigate.--Jeff, I'm not sure what the CDS state words is. The ODC state word is green now on ITMX HEPI where the outer perimeter is orange and the Isolation loops are closed.