ITW gas lines pumped down to 2e-3Torr on leak detector with leak rate in the low e-7 atm-cc/s. Gas bottles opened at 3psi and labels in epics changed to reflect correct setup. switch box set to cathode mode, checked that anode wire was at HV common.

note ballast is removed from ITW now to be used in ITE so that line is blanked off.

Broken TM2:TP2 has been replaced otday by a new TV-1001 nav pump supplied by vacuum group. replaced pump seris number:201281. new pump series number:IT23431008. TPs replacement history sheet will be updated by Frank. I will put comment on this e fault and let operator to close it.

ISAC Storage Vault Door Re-alignment (April-May 2024) 

Issue

• Rollers gouging and marking on roller supports, testing shows door shifts at least 185 thou on structural beam when fully open vs. fully closed
• door misaligned: 1/4" laterally, slight rotation (~1/16" difference across closed door gap).

Repair

• Moved left structural beam (facing front of door) inward 1/4" at post.
• Loosened drive system to shift door over via crane to average laterally (1/8" shift) towards center,
• Attempted to fix door rotation with crane, door would not settle down perfectly flush, but got slight improvement 
• Adjusted limit switches for fully open and closed (due to the adjustments made previously, needed to realign limit switches) - adjusted flag for final close back by ~1/4"; adjusted limit switch at back of vault forward ~1/4" 

Verification 

• Unloaded vault door actuation tested multiple times with no issues, door returned to same position every cycle, no interferences during travel
• Vault Door actuation tested with trays 4 and 6 engaged, no issues
• All pails accessible when open
• Tested open and closed limit switches: the open limit switches are working properly; the closing soft and hard limit switches are slightly close together, causing the door to just "bump" the vault when closing, The scale of this is OK for current operation, will be adjusted when the ISAC Target Hall Controls Overhaul is done
• Tested and reset Emergency override mechanism - works properly

Outstanding Tasks

• Will paint marks on structural supports to track if problem reoccurs - update ELog when complete 

System State: Operational

See attached file for details

The ITW Faraday Cage has been cleaned, this is part of Winter Shut Down job happens in ISAC-1 Electric maintenance room annually.

 F308 Inspection and service complete on #06, #08, #13, #15, #16, #19, #20, #21, #22.

All in good condition with new gasket material installed on #20.

Prepped for move to ISAC B3 for storage.

MCR Travis Curucz and I finished BL2A MAA ASU test per document 154779. everything works fine. Travis kept  the test document.

TM2 was moved from silo to TCS yesterday morning. The move is smooth.    TCS vacuum system was started after. TCS and TM2 pumping down is ok so far.

refilled TCS:TK2 to 27.4 inches to compensate water lost during THC filters change.

TCS water system  five filters were changed yesterday by plant group Dan.T. Service labels on filters are updated.  No water leak after job.

TM2 is moved from TCS to silo this morning. The move is smooth.

  couple of E-8 to low E-7 atm.cc/sec leak were found on TM2 service cap top air to vacuum  o rings.  Replaced these leak o ring seals including o ring on IG1 and steerer service panel,o rings on MSP, EE, D blue nylon and copper feed through, and o ring on a round blank off beside MSP terminal on second row. 

2024-july-03 update: TM2 was leak checked again at TCS. no air to vacuum leak on module top. i helium pressure tested(60psi) all water cooling lines (except HS) . They are leak free.

IG1S elbow o ring seal and a blank off cap o-ring seal beside the elbow were replaced on ITE entrance module top last Friday. IG1s has a higher than normal reading so i leak checked entrance module top last Thursday and found leaks to 5x E-8 atm.cc/sec leak on one of (or both of )these two o-rings seals. they are too close to identify exactly on which one was leaking so both o rings were replaced.  other air to vacuum seal on entrance module are leak free. 

Tm3 electrical check without target is done. Everything is good including 2 x 5 pin connectors( all OL at 250 V to 60 KV and each other)  see attachment.

The annual inspection of the main storage vault will be skipped this year since extensive inspection and testing was performed during the re-alignment job in May (see this e-log for details: e-log 2584). This included successful testing of the emergency close mechanism.

The mini storage vault was informally inspected by Adam Newsome on 2024-06-18. The following was checked:

• Cabling and cable management
• Connectors (note: the strain relief for the remote control input cable was loose - it was tightened)
• Controls box - external connectors and wiring
• Limit switches - wiring, mounting
• Motor visual check
• Drive wheels visual check
• Drive track visual check (note: the track had small pieces of metal shavings on it which were wiped off)
• Bearings visual check
• Miscellaneous fasteners visual check

Photos can be found in G:\remote handling\Facilities and Projects\ISAC\Mini Storage Vault\Inspections

The inspection was generally successful. No areas of concern. Regular inspection will resume next year.

The pail handling tool which is used to move 5 gallon pails around the target hall was inspected by A. Newsome. The main tool was checked, but not the spare as it is currently in a disassembled and unusable state. The tool appears to be in good, working condition. The following items were checked.

• Inspect structural integrity of long tube - check for bending, warpage, dents, cracks, rust/corrosion
• Inspect structural integrity of hook assembly - check for bending, warpage, dents, cracks, rust/corrosion
• Inspect fasteners - check all fasteners installed as per drawings, fasteners are tight (note: one fastener on crane interface subassembly was loose - all fasteners in these subassembly were tightened as a precautionary measure)
• Inspect crane interface assembly - check for damage and wear where the tool connects to the crane
• Check alignment - verify the tool connects to the crane and hangs vertically with no major misalignment (this step was not done - alignment is regularly checked during operations, and there was no concern as the tube was straight)

 Note: these tools are being inspected monthly by D. Wang and F. Song.

Photos can be found in G:\remote handling\Facilities and Projects\ISAC\Pail Handling Tool\Inspections\June 2024

IMPORTANT: the maximum load capacity and lifter tag for the tool are not present. There is a plan in place to affix these two labels in the very near future.

 5 gallon spent target pail, lifting long pole and hook assembly load test was done by Rupan, Keyur ,and David.  Load in pail 101 lbs, test time 10 minutes. No deform on pail( pail OD 29.8mm is not changed before and after test.  The test passed. Also 50 lbs load test on empty tray transit frame was done. The frame is good on test.  Rupan will have a test report on this job.

TM3 has been moved  from SHC to TCS.The move is smooth.

Tm2 has been successfully moved from SW silo to TCS.

 5 shielding blocks have been moved from ITW to ITE, MAA area has been secured.

Tm2 has been moved from TCS to SW silo. the move is smooth.