During the electrical test the was no contact.  To help investigate further the Montitor box was removed from the Cyclotron. It was found to have zero counts. The issue is believed to have to do with the fit of the box but confirmation of the writing harness continuity needs to be completed. This will continue on Monday. 

Bevan Moss wrote:

One of the beam spill monitor boxes was removed and placed into a lead coffin. The fields around the coffin prior to the monitor being placed in were 145 uSv/hr just above the box and 33.5 uSv/hr inside of it. A swipe was taken inside the box at this time and a count of zero was found. The tray for the monitor box was then placed into the coffin and the monitor removed from the cyclotrons. The field above the coffin with the monitor box was 1.0 Sv/hr. Safety hinted that it may be possible to put this in the decay storage tunnel. The copper block was then returned to the coffin. The fields above the the coffin were now 9 Sv/hr. The lid was returned to the coffin and returned to it storage place. The new monitor box was then installed into the Cyclotron. The box only hung up on the pins once and there was some slight difficulties unlatching. From previous experience once fully unlatched a slight tap in the latch direction seems to allow it to release easier.  Overall the installation was considered very smooth.

Tool Trolley:

The connector faceplate was replaced with a new version to allow for more space for service, and consolidate video lines into a single 9-pin CPC connector. A model and drawing were created and are part of the overall tool trolley assembly (to be added to PDM later): TRH1394

Air tubing that previously ran to the connector faceplate on the tool trolley was replaced as it was very old. New tubing is in 3 different colours for easy identification: blue, black, green.

Fittings were replaced with more modern push-connect style (1/4" tube).

Outrigger 2 vertical drive repair is complete - ball screws were replaced to resolve a jamming issue (this work was done in the summer).

The outrigger has been recalibrated and all limit switches and feedback signals tested. All ranges of motion were tested multiple times as well.

It has been reinstalled on the bridge and is ready for service for 2020 shutdown.

The pendant used for controlling the orbital motion of the bridge mockup was upgraded. Features of the new pendant include:

• One cable to controller (formerly two cables required)
• Ergonomic and robust form factor of pendant
• Easily modifiable button/contact setup, with spare button space
• Extended cable to reach anywhere in the room

Pictures attached show before and after.

A new remote crane pendant was installed to replace the existing wired pendant on the B1 level of Remote Handling building (electrical lab). Two remote pendants exist (spare). The previously used pendant will be kept, at least temporarily, as a backup if needed.

The pendant was installed by M. Faragher, and tested by M. Faragher, A. Newsome, and T. Cave. It is fully functional.

TRIUMF Work Request 5684 describes the upgrade in more detail.

A new remote crane pendant was installed to replace the existing wired pendant on the B2 level of Remote Handling building (basement area - vault access). Two remote pendants exist (spare). The previously used pendant will be kept, at least temporarily, as a backup if needed.

The pendant was installed by M. Faragher, and tested by M. Faragher and T. Cave. It is fully functional.

TRIUMF Work Request 5684 describes the upgrade in more detail.

All shadow shields which are remotely placed inside the cyclotron during shutdown were inspected by Adam Newsome and Chris Peterson on Jan. 13, 2021.

The inspection consisted of:

• Verifying feet were damage-free, welds intact (note: only outer feet were checked due to the large amount of effort that would be involved in shuffling shields around to check each foot)
• Inspection of lifting eyes
• Tightening all critical bolts - many of these bolts were slightly loosened from years of vibration (approx. 1/4 turn)
• General check for other miscellaneous damage

It is believed that all shields are fully acceptable for use, except ones which are clearly marked otherwise from previous years.

The inspection was prompted by a shield which had significant damage last year which could have resulted in a high-dose scenario if it were to get stuck inside the cyclotron. That shield has since been repaired. It is suggested that this inspection take place once every year or two years.

The lid up operation took place on Jan. 22, 2021.

The system was not energized well ahead of time to allow to "warm up", as is usually done.

Starting Master Synchro value: 44

After gap set on all jacks, master synchro: 131

Notes on Jacks: Watch Jack 11, cause a few trips during lid down but was able to run again without jogging synchros

Jack 5 and 11 had spikes early but no trips

Jack 2 and 3 lagged early and caused trips (but no spikes)

After jogged 2 and 3 back, still had issues with 7,9,11

7, 9, 11 were jogged to match and then ran for half an inch, then 1, 5, 11 showed some spread

Lowered all the way down and spread was much improved (starting Master Synchro reading: 3)

Started raising again and went much smoother

Jacks 7 and 11 showed some occasional noise on readback

stopped to inspect vacuum seal (12:30 - Master Synchro 7016)

No trips on second attempt going up until 40"

Jack 1 kept falling behind, causing Jack 2 to trip

Finished at 2:03PM, Master Synchro at 47406

Meter stick did not reach ceiling (off by 1/4")

The meter stick versus limit switch discrepancy could be due to the stick shifting slightly by accident (due to vibrations or accidentally being bumped by someone). The limit switches were trusted as it would be highly unlikely for them to both disagree with the meter stick simultaneously if there was an adjustment setting issue with them.

The newly developed Ladder Handling Tool (TRH1401), which is used to move the maintenance ladders from the #5 resonator area closer to the centre post, was tested inside the cyclotron tank to perform the actual operation. This is a task that was historically performed by operators, resulting in dose received (typically 0.1 - 0.3 mSv for two people, twice per annual shutdown). This tool completely eliminates the need for people to receive this dose - only a small fraction of this dose is involved for one person in setting up the tool for use.

Overall, the test was deemed successful; both ladders were successfully moved which validated the functionality of the tool. There was difficulty in unlatching the lifting eye interlock for the first ladder (this was expected) but it was eventually achieved without human intervention. After the first ladder was moved, the entire tool was brought out of the tank, and some minor adjustments were made (ex. clutch adjusted). An attempt was then made to move the second ladder, and it was a significant improvement over the first attempt.

Feedback was obtained from this test and work will be performed to improve some aspects of the design (mechanical, viewing, procedural). The tool will be tested at least once more before the end of 2021 shutdown, and we will aim to have the important feedback items implemented by then.

Old fittings and broken pneumatic tubing on the FTRF jig have been replaced with new push-connect fittings and polyurethane tubing. The jig was previously not in a functioning state due to damaged tubing. A pneumatic diagram was created in the process of the upgrade. The tubing will be cleaned up within the next few days and the jig tested.

On Feb. 24 while practising a training exercise, the lower resonator trolley unexpectedly experienced a radial drive failure. The trolley did not move in either radial direction (this occurred after approx. 5 minutes in the tank, near the centre post, with FTRF jig installed). The trolley was retrieved from the tank manually for investigation. Upon retrieval and testing on the mockup, the radial drive began to work again.

Investigation consisted of:

• Verifying controls signals reaching motor controller
• Verifying power to motor
• Verifying all connectors and cables intact
• Verifying drive components installed and free of damage (shafts, keys, set screws, etc.)
• Disassembly and inspection of gearbox
• Running the motor for approximately 3 hours with no load to verify no issues

The cause of the issue cannot be found, however it is suspected a thermal shutdown of the motor or motor controller may have occurred, and after a short delay, the circuit was reset back to a functioning state on its own.

In the future prior to using this trolley it is recommended to test run it, with load, in the mockup to verify radial drive functionality.

The vault shield door has been closed and seal inflated. The operation was performed with no issue.

An emergency trolley rescue winch (TRH1527) was developed for the purposes of retrieving trolleys from the cyclotron tank whose radial drive have failed.

This winch was tested today on the carrier in mockup setting with success by Adam Newsome, Dan McDonald, and Travis Cave. The following is a summary of the test:

• Lower resonator trolley was used with additional 1200 lb loading (total weight: approximately 2900 lb)... this represents the worst-case scenario for rescue
• The drive mechanism was bypassed so wheels could freely rotate (this is standard rescue procedure)
• The winch was mounted so that the alignment angle of the cable was close to 0 degrees
• The winch successfully pulled the entire assembly with no issue – it was pulled approximately 5 metres

An ECO will be released for the drawings for mounting components - no redlines were required.

The following outlets were installed by Electrical Services Group in order to facilitate upgrading power supplies for Cyclotron Remote Handling, as per Work Request 5289:

• 2x 15 Amp outlets
• 2x 20 Amp outlets

The four breakers for these outlets are located in the panel adjacent to the main entry door to the electrical lab. The outlets are located in behind the control console.

The following items from Phase 1 of 2 of Bridge Lift Mechanism Refurbishment (O504) are complete:

• Replacement of pneumatic tubing
• Replacement of hydraulic cylinders for lifting, and procurement of spare

The newly refurbished system has been tested by Dan McDonald (June 16, 2021) and verified as functioning.

Phase 2 of the refurbishment will include replacement of the hydraulic pump and creation of pneumatic/hydraulic drawings. This is expected to be complete by end of 2022.

[Edit 2024-10-16]: Phase 2 has been completed. See e-log 191

The two support fingers on the upper resonator trolley were bent due to excessive loading during cylinder toggling.

Fingers were bent back into position such that they are vertical when the cylinder is retracted.

The cylinders used to actuate these fingers were replaced (one was leaking) - replacement allowed for the opportunity for upgrade. The following changes were made:

• Changing reverse spring-return cylinders to double-acting cylinders (formerly American Cylinder 750RVS-2.00, replaced with SMC NCDMB075-0200C)
• Addition of in-line flow controls for both extension and retraction motions
• Tuning of flow control to achieve smooth operation and prevent further damage to the fingers during actuation

 The new finger configuration has been tested and is working.