Remote Handing is ready for January, 8 2018 Cyclotron lid up. Elevating system service has been completed.

A Cyclotron Lid raise was attempted on Monday, January 8 at 12:00, however this attempt was aborted after lifting the lid several millimeters due the motor
brake on Station #9 that would not release properly. After troubleshooting the elevating system for several hours, motor brake wires were disconnected from
the motor terminal block at the station and pulled through the vertical conduit down the B2 level below the Cyclotron for further inspection. The inspection
showed severe damage to the wire insulation and conductor over an 18" interval, which corresponded to the position directly across the mid-plane of the
cyclotron. New wires were spliced to the existing wires at the bottom of the vertical conduit section, which were run through the conduit and reconnected to
the motor terminal block.

The motor drive wires on Station #9 were also removed for inspection, which revealed major damage to the wire insulation over the same 18" interval;
however, the conductor remained intact and was covered in electrical tape and re-run through the conduit vertical and reconnected to the terminal block. The
elevating system was then tested and the motor brake on Station #9 released as expected.

The Cyclotron Lid was successfully raised on Monday, January 8 at 20:00. The initial station readings are shown below:

00075 - Master
00045 - Station #1
00044 - Station #2
00042 - Station #3
00045 - Station #4
00044 - Station #5 
00044 - Station #6
00045 - Station #7
00044 - Station #8
00044 - Station #9
00047 - Station #10
00048 - Station #11
00045 - Station #12

The final lid-up station readings are shown below:

47422 - Master
- Station #1
- Station #2
- Station #3
- Station #4
- Station #5 
- Station #6
- Station #7
- Station #8
- Station #9
- Station #10
- Station #11
- Station #12


The Cyclotron Lid was lowered on Tuesday, February 20, between 11:30 and 12:00. The final station readings are shown below:

00081 - Master
00086 - Station #1
00089 - Station #2
00054 - Station #3
00016 - Station #4
00087 - Station #5
00087 - Station #6
00085 - Station #7
00083 - Station #8
00086 - Station #9
00087 - Station #10
00089 - Station #11
00088 - Station #12

While lowering the lid, the following observations were made:

- The left High Field gear reducer on Station #1 made noise intermittently during the middle of the lid lowering operation
- The right High Field gear reducer on Station #2 made noise intermittently during the end of the lid lowering operation
- The right High Field gear reducer on Station #11 made noise intermittently during the beginning of the lid lowering operation

2018-01-09
07:00-10:00 - Pre-job meeting, informed main control room of operation startup, lowered inflector (Operations 
Group)
10:00-12:00 - Connected cable chain rail, installed service bridge into tank, ran video trolley onto service 
bridge, performed initial circumnavigation of service bridge in tank, made contact with newly installed cable 
bracket (Probes Group) near jack station #9, assessed damage to cable and bracket (service bridge OK) 
12:00-13:00 - Performed photo survey of HE1 probe / 2A extraction foil / 1A extraction foil w/ Probes Group 
representative
13:00-14:30 - Performed photo survey of center post / lower and upper D-gaps / lower outer perimeter
14:30-15:00 - Powered down service bridge control room, informed main control room of job progress

2018-01-10
07:00-07:30 - Pre-job meeting, powered up SBCR, informed MCR, troubleshot video trolley
07:30-09:00 - Performed video survey of two cryovac modules / upper and lower RF booster / 2A exit port / 2x 
lower and upper scraper foils
09:00-10:00 - Removed video trolley and installed lift trolley onto carrier
10:00-12:00 - Removed 7x copper blockers from tank and placed into 4x coffins
12:00-12:45 - Removed lift hook extension and installed radiation meter onto lift trolley
12:45-13:45 - Calibrated radiation meter
13:45-15:00 - Post-job meeting and preparation for in-tank radiation survey, informed MCR

2018-01-11
07:00-07:30 - Pre-job meeting, powered up SBCR, informed MCR
07:30-08:00 - Calibrated radiation meter w/ Safety Group representative
08:00-10:30 - Performed in-tank radiation survey w/o lead shields (27 circumnavigation passes inside tank 
from 350" to 80" radial position)
10:30-11:00 - Removed radiation meter from lift trolley
11:00-14:30 - Installed 200 & 400 series lead shields
14:30-15:00 - Powered down SBCR, informed MCR

2018-01-12
07:00-07:30 - Pre-job meeting, powered up SBCR, informed MCR
07:30-09:30 - Installed 600 & 500 series lead shields
09:30-14:30 - Installed 700 series lead shields
14:30-15:00 - Powered down SBCR, informed MCR

2018-01-15
07:00-15:30 - Pre-job meeting, powered up SBCR, informed MCR, installed 700 series shields, installed ladders,
installed port hole covers, powered down SBCR, informed MCR

2018-01-16
07:00-15:30 - Pre-job meeting, powered up SBCR, informed MCR, calibrated radiation meter w/ Safety Group
representative, powered down SBCR, informed MCR

2018-01-17
07:00-15:30 - Prepared for upper resonator 2C Extraction Probe

 All cyclotron in tank work has been completed.

 The HE1 probe was removed from the cyclotron today using the procedure in Document 126165.  The reason for removal is so that Probes Groups can attempt to repair a problem with stuck probe head drive.  Due the failure, the probe head was almost at the inboard travel limit (towards cyclotron center post) at the time of removal. Additional cut-outs were added to the HE probe frame to accommodate the probe head and ribbon cable wheel which were not at the normal position.

Location of the frame below the probe was done according to the procedure.  While moving the frame up some resistance was encountered about 1" from contact between the frame upper surface and the base of the probe.  After some investigation with outrigger cameras and direct viewing from the tank edge it was determined that the probe head was interfering slightly with the removal frame.  The probe head was driven completely to the inboard limit (a small amount of travel was still possible).  After moving the probe head the frame could be raised up to the probe without issue, and then it was removed from the tank as per the procedure.

The probe is scheduled to be reinstalled next week after the repair is complete.

 HE1 probe was reinstalled in the cyclotron this morning as per the procedure in Document 126165.  Hardware for the probe head motion had been repaired/replaced by Probes Group, so the probe head could be put in the fully retracted position.  The job went smoothly and nothing unusual was encountered.

 The Blue Shield Door on the B2 level of the RH building has been closed.

Lid up operations took place on January 21st starting at 10:25 lid went up without issue. Couple things to note are station 11 had a number of spikes in the first ten inches of travel and number five had a couple in the first five inches of travel. We will monitor these stations and perform maintenance as needed. Station three which has spares #13 saw above normal heat generation in the right side High field gear box, we will investigate next week.

Lid down operations for 2019/2020 shutdown went ahead as planned on March 10th 2020 with Dan Louie and Arthur Leung absent due to a conference. Please see attached file for station counter numbers. Station two right side Highfield gear box was making intermittent growling from outboard bearing, this station is next on scheduled maintenance and will be inspected post removal next shutdown. Station 3 has spare jack set 13 in place, using Operations thermal camera we where able  to observe higher than normal running temperatures from right side gear box. Upon removal next year we will investigate bearing end play tolerances as this is the suspected cause of heat.

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.

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.

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

The lid up operation took place on Feb. 4, 2022.

The system was not energized well ahead of time to allow to "warm up", as is usually done. Upon starting, brakes were not energized - this was because of the master synchro position - once it was adjusted, interlocks for motor brakes toggled as expected.

Starting Master Synchro value: 61

Minor issue when first starting: after a few attempts to raise, jack 12 needed to be manually jogged to adjust its synchronicity with the others. After it was adjusted, the entire operation went smoothly and the system did not automatically stop again.

The system was stopped at approx. 3 inches of travel to inspect the seal, etc. Everything OK.

No major issues with any jacks. No overheating observed.

Jack 11 showed occasional noise spikes on readback (this happened in 2021 as well - suggest replacing this station's synchro next).

Meter stick hit the ceiling and bent slightly. 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 limit switches toggled as expected, and the gap was measured at 46.5" (correct value).

Ending Master Synchro value: 47387

Total time to raise was approx. 40 minutes.

Doses:
Arthur: #150, 0
Dan L: #310, 0.02
Dan M: #819, 0.04
Nadia: #868, 0.02
Adam: #862, 0.014
Kyle: #111, 0.09
Ryan: #115, 0.05
Chris: #840, 0.043

When attempting to perform the radiation survey, the program displayed an error at startup stating that the software was not able to keep up with the incoming hardware samples, and suggested to increase sampling rate or buffer size. The default sampling rate of 500 ms was not used - rather, 100 ms was used. No issues were observed with this rate. As far as I am aware, this issue had not occurred in the past, and the cause is unknown.

The lid down operation took place on Apr. 27, 2022.

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

Starting Master Synchro value: 47387

Upon startup, the system worked fine and lowered the lid.

After some time, jack station 12 became out of sync with the master synchro. It needed to be manually jogged to adjust its synchronicity. After it was adjusted, the entire operation went smoothly and the system did not automatically stop again.

No major issues with any jacks. No overheating observed.

The rope and pulley system that is used to raise the festooning rail across the vault shield door has been re-routed. It now makes use of all three pulleys and is easier to raise and lower without interference. 

 We removed the left bushing that is around the air cylinder on the festooning rail, right outside the cyclotron. It was cracked. Will need to replace next year when the vault door opens again.