Two changes have been made to the control system to the South Hot Cell:

1. Addition of two emergency stop buttons: one located in the Target Hall on the wall adjacent to the hot cell, and one located on the control panel adjacent the operator station.
2. Addition of limit switches to the turntable's vertical drive system to prevent over-travel at both the upper and lower limits.

The emergency stops will both stop all turntable motion: vertical and rotational.

An update to operating procedures: in order for the vertical motion system to function, the limit switch cable must be plugged in. When plugging in the vertical drive motor to the wall outlet as per normal operating procedure, it is now required to also connect the limit switch (which is mounted near the motor on the driveshaft) to the cable coming from the appropriately labelled junction box on the South wall (M12 connector).

These changes are based on electrical drawings IRH2083 - IRH2085 and mechanical assembly drawing ITA6739. The changes have been commissioned according to commissioning plan Document-218490. The commissioning report will be uploaded to DocuShare. The work permit for this upgrade was I2022-02-15--3.

The annual inspection of the mini-storage vault was performed today. The following items were checked:

• Cabling and cable management
• Connectors
• Controls box - internal wiring and components, functionality
• Limit switches - functionality, wiring, mounting
• Motor
• Bearings
• Set screws
• Miscellaneous fasteners (some loose, but were tightened)

Everything appears to be in good working order.

Note: in the near future, the bearings should be greased. This is planned to take place during the next inspection of the main storage vault.

The motor cable for the storage vault was replaced as the old one was showing signs of wear. The U-track that the old cable ran through was also bent as a result of being hit.

In the process of replacing the cable, an e-chain was installed for cable management purposes. Mounting brackets were modified and a new U-track was installed as well. The new hardware is more robust than what was previously installed.

The vault door was opened and closed multiple times while observing the e-chain - everything behaved as expected. The system is operational.

Solidworks model IRH0189 is updated to show the changes

A modification was made to integrate the hot cell's lift table into the E-stop circuit. See work permit I2022-10-07-1

The E-stop mounted on the right side of the small enclosure adjacent to the operator station will now serve to stop the lift table's up and down motion, as well as the turntables up/down and CW/CCW motions. Functionality was checked by B. Webster (electrical services) and A. Newsome.

Note: it is recommended next time there is a hot cell entry to inspect whether or not the limit switch specified in the schematic is actually installed. The schematic should be updated to match the drawing.

Redlined electrical drawing photo attached to this e-log, and the paper drawing is left inside the lift table's control box. The schematic will be revised based on the redline updates, likes as part of work request #6342 (to integrate this drawing into the turntable controls drawing package).

TM4 was moved from ITE to NHC with C#4.

TM4 was moved from the North Hot Cell to the Target Conditioning Station with UCx#41.

C#4 spent target was moved to the storage vault, in pail 277. Dose rate at approximately 1 m when leaving the hot cell was 164 mSv/h. The pail has been placed in vault location 4C. See updated vault layout attached.

TM4 was moved from the Conditioning Station to the East Target Station with C#4.

The following five pails were moved to the mini-storage vault today under work permit I2022-12-16-1:

• #239 (formerly vault location 7A): 1.38 mSv/h @ 1m
• #245 (formerly vault location 6B): 1.56 mSv/h @ 1m
• #264 (formerly vault location 6A): 748 uSv/h @ 1 m
• #267 (formerly vault location 1C): 708 uSv/h @ 1 m
• #268 (vault location 7C): 809 uSv/h @ 1 m

The mini-storage vault is now full and ready for transfer to F-308 flasks.

The following measurements were made on other pails:

• #211 (vault location 3C): 4.21 mSv @ 1 m
• #217 (vault location 3A): 1.05 mSv/h @ 1 m
• #246 (vault location 6C): 1.98 mSv/h @ 1m
• #274 (vault location 1A): 4.78 mSv/h @ 1 m
• #228 (vault location 1B): 3.86 mSv/h @ 1 m
• #256 (vault location formerly 7A, now 7B): 3.60 mSv/h @ 1 m
• #260 (vault location 5B): 1.46 mSv/h @ 1 m

The target index spreadsheet has been updated to reflect these changes. See attached PDF print.

[edit 2023-01-03] The crane was powered back on this morning - there do not appear to be any faults and it seems that the crane was unaffected by the power outage.

The ISAC target hall overhead crane was powered off for the holidays. Note that this may result in the commonly observed PLC battery failure issue when the crane is powered back on in the new year.

The following three pails were moved from the main storage vault to the mini-storage vault:

1. #211, Ta#58 (formerly vault location 3C)
2. #217, ZrC#8 (formerly vault location 3A)
3. #228, UC#37 (formerly vault location 1B)

The target index spreadsheet has been updated.

The linear actuator used for the Y-motion motor assistance on the spare telemanipulator was replaced and tested. It was observed around September 2021 that the former one which was installed was causing fuses to blow for the main 120 VAC power supply in the control box. After some troubleshooting, it was determined that the linear actuator itself did not operate smoothly - it was suspected that this caused motor overload due to additional friction. This suspicion was confirmed by operating the linear actuator independently with a power supply and measuring current draw. The part has been replaced by Thomson PPA90-58B65-08NXXX. Note: this part took over 1 year to arrive since it was first ordered. The spare telemanipulator is confirmed operational.

Update 2024-09-11: noting that this was for serial number 9351

The spent target assaying turntable was repaired. It was tested today with a load exceeding the maximum it would need to handle during rotation (100 kg). It works as expected and is ready for operation.

The pail handling tool which is used to move 5 gallon pails around the target hall was inspected by A. Newsome, N. Jorgenson, and E. Lahe. The main tool as well as spare were checked for the following items. The tools are in good, working condition. It is noted that some fasteners on the hook assembly were slightly loose, but have been tightened.

• 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
• 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.

 The emergency close mechanism for the Storage Vault door was tested by Travis Cave, Nadia Jorgenson, Adam Newsome, and Jason Zhang. The door was opened to its fully open limit, then closed with the emergency system. 

The test was successful.

Based on a request from CNL (attached), modifications were made to the wire ropes protruding through the tops of F-308s to add a crimped loop which acts as a lifting feature. Tests were performed (report attached) on 10 sample units to validate the strength of these loops, since each loop could not be tested in-situ once the pails were already packed in F-308s. CNL has reviewed and approved the test report.

Wire ropes within the following F-308s, which were staged for shipping as of June 20, 2023, were modified to include the lifting loop:

1. 06
2. 13
3. 15
4. 16
5. 19
6. 20
7. 21
8. 22

Each lifting loop was:

• Crimped according to the same procedure, using the same parts and tools, as the 10 sample units
• Measured using a tape measure to confirm the 3" size specified by CNL
• Checked using a go/no-go gauge provided from the crimp tool manufacturer
• "Pull tested" by hand as a quick check to confirm the crimps were successful (not a quantitative and official test, but a secondary qualitative "feel good" check)

As of the time of writing this e-log, TRIUMF believes these F-308s to be ready to ship.

An annual electrical and mechanical inspection was performed on the SMP today by Adam Newsome, Travis Cave, Eric Lahe, Maico Dalla Valle, Antoniette Yap, and Jason Zhang as per Work Permit I2023-06-21-4. The following items were checked:

• Check condition of wiring for physical/radiation/UV damage
  • OK, no signs of significant damage
• Check for cable tray debris or damage
  • There were multiple items in the cable tray which do not belong there - misc. pieces of wood and metal... these items were not disposed of but should be in the near future
• Check inside control panel: components and wiring, labeling
  • Labeling intact, components in good condition
  • Misc. random wires pulled to check... one ground wire was loose - it was tightened
• Verify camera views
  • This was not inspected in detail but signal status was checked, and is checked prior to remote operation
• Check connectors for damage
  • All connectors OK
• Check pendant for damage and verify labeling intact
  • Pendant OK
• Lid open/close test
  • Lid was opened and close multiple times - smooth operation, no concern
  • Lid close logic was checked - OK
• Vessel rotation and limit switch check
  • Both CW and CCW limits were checked, functioning
  • No concern on rotation - chain drive, rotary limit switch, and cable reel all functioning normally
• Lubricate chains
  • Not done - should be done next year
• Inspect tensioners
  • Done - OK
• Tighten fasteners
  • Not all fasteners were checked - washers will be replaced soon so this was not deemed necessary
  • Approximately 50 washers are missing for socket head screws in slotted parts. Not safety critical but they should be replaced soon.
• Visual inspection
  • All OK

Overall the inspection was successful.

Bearings for the main storage vault door were lubricated on 2023-07-28. It is unknown when this was last done. It is suggested that this be a recurring maintenance task every two years.

The bearings on the mini storage vault were lubricated. It is suspected that this has never been done. It is suggested that this be performed every two years.

A draft procedure will be created for this job, but at a high level, this process involves:

• Opening the door fully
• Disconnection of the motor, limit switches, and cable management system
• Attachment of a lifting magnet to the door itself
• Raising the door
• Lubricating bearings
• Reversing the process to re-assemble

The entire job took less than 1 hour to complete.

In an effort to clean up the camera installation on top of the ISAC target hall crane to resolve a fault, the position measuring tape and its associated camera were removed from the target hall crane on July 31, 2023.

Still to do: clean up power bar installation.