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iocsl22rffcc5 restored
COMMENT ON Glycol Leak Response and Repair (after action ATLis entry)
9/25: repaired and system re-filled - operational ~10pm. System DP, temperature, and flow at setpoint. Environmental cleanup from ditches in process.
9/26: on-call tech checks and confirms system is performing as normal. System DP meeting 18 PSID setpoint and pump suction remains positive. Verified piping repairs in pit remain leak free. Environmental cleanup from ditches complete. Sandbags, temporary dams, etc. removed and normal flow in stormwater ditches restored.
iocsl22rfhtr restored
COMMENT ON 26/27 SAM Power Supply Flushing
MOLLER install 09/25/2026
ATLis Comments Daily Digest
COMMENT ON Vacuum Activities CEBAF 9/09/2026 through 12/31/26 (SAM26)
ACG Report
The RF Captain and Tools screens, the cryo and ops heater screens, the JMenu 1L08 combo entry, and the turbo mode script now reference 1L08 as an RF 3.0 zone. The snap files for the new 1L08 heater IOC are staged.
EPICS Vacuum readbacks and commands for NL15 upgrade are checked out and operational
ABIL replaced with new version.
EM3A circuit 35 unpowered
The scroll pumps for CMs 2L07 and 2L09 tripped off ~0600 Friday even though they were plugged into an emergency loop circuit, #35. #33 is still powered so I moved the plugs and restarted the pumps. I don't know what else may be affected.
2L07, 2L09 scroll pumps were off
After reading the linked entry and looking at the insulating vacuum screen, I deduced that the scroll pumps at 2L07 and 2L09 were off. I took a walk through the tunnel. I found the scroll pumps plugged into EM-3A 35. When I moved the plugs to EM-3A 33, the scroll pumps came back on. I completed my circuit: no other scroll pumps were off. 2L08 was already plugged into 33. Figure 1 was taken after I returned. 2L09 VTP (figure 2) was in "waiting" mode when I left my office so it recovered once the scroll pump came back on.
VTP2L07 will not recover
Liquid level is coming back up and JT valve is starting to come off the rail, but I can't get the turbo pump to stay on. Last time something like this happened, guidance (https://logbooks.jlab.org/entry/4089482) was to leave the pump off until an investigation could be conducted, so leave it off I shall. Foreline pressure is deteriorating, though it is much lower than it was all day. Out of an abundance of caution I'm notifying I&C via text in case this needs attention before Monday.
2L07 is recovering
Liquid level is recovering.
I tried once to turn the turbo pump on normally, leading to the sharp rise in pressure. Found guidance (linked entry) and tried again using Soft Start. I didn't see a difference in startup behavior with Soft Start on vs off. I'll try one more time to bring the pump online but if that fails I'm going to leave it off and notify I&C (following the linked log again).
Follow-up Re: Foreline pressure tripping turbo pump on 2L07
Foreline pressure tripping turbo pump on 2L07
Received a call from Cryo about liquid level dropping with JT valve pinned open in 2L07, roughly coincident with the power outage Friday morning. Found the turbo pump trying and failing to spin itself back up, so I turned it off. Foreline pressure is recovering on its own at the moment; I will give it a little more time before trying to turn it back on.
I also changed the JT max from 85 to 90, then to 95. It's too soon to tell whether the liquid level is turning around just yet but it looks promising. Updates to follow.
Follow-up Re: 2L07 losing liquid level & JT opened
2L07 losing liquid level & JT opened
COMMENT ON Install Honeywell EBI Virtual Servers (EBIhbm600 and EBIrps600) Microsoft Patches
COMMENT ON 2026 SAM LCW Controls Calibrations
Building 38 South Access calibration is almost complete and will resume Tuesday 9/29/26. Once the South Access calibration is complete, calibration will move to Buildings 82 (W1) and 68 (W2). Once W1 and W2 are complete, calibration will move to either Building 92 or Building 200 depending on which systems Accelerator OPS recommends being completed first.










