Aggregator
Downtime Incident CLOSED: Building 40 (W4) temperature exceeds 88 F
Downtime Incident CLOSED: Building 39 (E2) temperature exceeds 88 F
Downtime Incident CREATED: Building 40 (W4) temperature exceeds 88 F
1L21-4 BLVF/FSD preventing HV
Dropped zone to null after several attempts to turn cav4 on with instant drop back once in HV. Reset after reboot of cav 4 but zone wouldn't even attempt to go into HV after all back into filaments. Noticed that filaments were all low after complete filament counts. Came onsite and didn't see anything at all so I cycled the CPS a/c overcurrent and control power and successfully got zone back into HV and RF. Restored Cav 4 to ODVH= 8.9 Mv/m. Checked out cav. 7 and it does have low drive out but will have to check RFCM out before I can say it's a 2.5w amp. Handing back to OPS.
Downtime Incident CREATED: Building 39 (E2) temperature exceeds 88 F
The following cavity histories have been updated: 1L09-2
The following cavity histories have been updated:
1L09-2
Username: yoon
Date/Time: 06-11-26_18:54:06
RF Status: Bad
Tuner Status: Good
Comment: C75 Bypassed - raising the mod anode voltage did not fix the mod anode current high fault this cavity is having
Special Instructions:
Maintenance Tag: Component: Other
1L09 zone dropped HV after bringing cavity 2 back up
tried to bring cavity 2 back up (from bypass) after RF increased the mod anode voltage, but cavity still tripping on mod anode current high fault, brought the zone out of HV and I'm unable to recover it, so going to re-bypass this cavity
The following cavity histories have been updated: 1L09-2
The following cavity histories have been updated:
1L09-2
Username: yoon
Date/Time: 06-11-26_18:45:54
RF Status: Good
Tuner Status: Good
Comment: C75 Unbypassed - mod anode voltage has been raised
Special Instructions:
Maintenance Tag: Component: Other
"Weekly MCC source checks complete"
Down due to RF, ramping down box supplies to reduce building heat load
Currently down due to 1L21-4 keeping the zone out of HV. RF on call is enroute and estimates that it could be several hours to swap out an RFCM. We are ramping down the box supplies to reduce the heat load in the buildings with temperature alarms (Facilities is supposed to be addressing that problem but we haven't had an update yet). Fig. 1: building temperatures (red horizontal line is 88 degrees F).
We took a ZPOS before things went sideways, so (fingers crossed) we shouldn't have too much difficulty getting orbits back to where we were.
Box Supplies Were Turned Off
The following box supplies were TURNED OFF by version 2-16 of the Box Supply Cycling Script:
ARC1A Ramp Rate = 7.954 A/s
ARC2A Ramp Rate = 7.217 A/s
ARC3A Ramp Rate = 10.099 A/s
ARC4A Ramp Rate = 11.344 A/s
ARC5A Ramp Rate = 10.435 A/s
ARC6A Ramp Rate = 9.571 A/s
ARC7A Ramp Rate = 10.231 A/s
ARC8A Ramp Rate = 12.289 A/s
ARC9A Ramp Rate = 9.911 A/s
ARCAA Ramp Rate = 12.626 A/s
DOG1E Ramp Rate = 3.809 A/s
DOG2E Ramp Rate N/A
DOG3E Ramp Rate N/A
DOG4E Ramp Rate N/A
DOG5E Ramp Rate N/A
DOG6E Ramp Rate N/A
DOG7E Ramp Rate N/A
DOG8E Ramp Rate N/A
DOG9E Ramp Rate N/A
LAM1C
Downtime Incident CLOSED: 1L09-2 Bypass
Bypassing 1L09-2
The following cavity histories have been updated: 1L09-2
The following cavity histories have been updated:
1L09-2
Username: yoon
Date/Time: 06-11-26_18:08:53
RF Status: Bad
Tuner Status: Good
Comment: C75 Bypassed - cavity caused zone to drop out of HV twice
Special Instructions:
Maintenance Tag: Component: Other










