The installation of the upper bearing fall protection equipment was completed last week by Dan and Maico.

- Full safety platform assemblies (ref. TRH1217) were installed on stations 1, 6, 7, 11, 12

- Short safety platform assemblies (ref. TRH1248) were installed on stations 2 and 8 to avoid interference with the lights

- Inboard anchors and SRL (self retracting lifeline) units were installed on 1, 2, 6, 7, 8, 11, 12, to permit the setup of the inboard railings at each station

- Outboard anchors were drilled and installed at all stations, using either D-ring swivel loops or Saf-Lok wedge anchors (both DBI Sala products), to allow safe setup of the outboard railings at each station

Also note:

- One railing at Station 1 had to be shortened to avoid interference with the guardrail of the aluminum stairs at that station, see attached photo.

- The beam clamp for the horizontal lifeline at Station 1 has an extension that protrudes into the working area.  This extension has been marked with pink flagging tape.

- It was noted that one more horizontal lifeline and two more beam clamps are needed to permit safe access to a station.  Grant will ask the equipment provider if they can make a shorter beam clamp to use at station 1, then transfer that longer standard clamp to the station that requires it (along with another new longer clamp).

- It was noted that we were short 2 carabiners.  Grant will order extra.

 Annual Jack Inspection: The annual elevation system inspection has been completed (Jan 31,2023).

At station 1, Highfield gear Jack 13R needs a coupler seal replacement. It is ok for this shutdown, but should be replaced before next shutdown.

During the lift, station 7, Right Highfield was running a little rough - should also be checked before next shutdown. 

All motor and gearbox temperatures recorded during lift were consistent to temperatures recorded in the past. 

The full service to two jacks are not being completed this year. 

 The annual elevating system maintenance for the 2023-2024 shutdown following Document-220322, 

Work done after electrical lockout of elevating system and motors electrically disconnected: 

Work done on Station #1: 

• Note readings on station counter (71) and gap clearance on yoke (5/8" wrench thickness) 
• Remove all spares(#13)  from station 1 (two jacks, two highfield gear reducers and one electric motor) 
• Reinstall complete serviced original station into station 1
• Set yoke gap and counter to same as previously recorded

Work done on Station #7: 

• Note readings on station counter (71) and gap clearance on yoke (9/16" wrench thickness) 
• Remove originals from station (two jacks, two highfield gear reducers and one electric motor) 
• Install Spare elevating system (station #13) into station #7 
• Set yoke gap and counter to same as previously recorded 
• Inspected and serviced upper bearing: OK 
• the removed originals are taken to the Remote Handling Active Machine shop where each component will be inspected and serviced to be reinstalled next shutdown

Electric motors have been reconnected at stations #1 and #7.

All control to the video trolley was lost during remote photographing of components in the cyclotron. The control system and cameras on the trolley were still operational leading to the suspicion that a power cable was broken either on the trolley or the bridge festooning. Two trips into the tank were made to evaluate the problem and attempt to push the trolley out of the tank. Pushing the trolley only managed to move the trolley a few feet before jamming. A lift mechanism was used to raise the drive wheel without any success. This device was modified and used successfully to remove trolley completely from the tank.

In tank survey completed.  A few items of interest were found.  Ladders need to moved manually outboard to #5 resonators and the items noted in attached document need to be addressed.

Lower resonator trolley radial motor overcurrent was causing control system to drop out momentarily.  All controlled devices acted as expected and reverted to their fail-safe mode.  When system restarted 1-2 seconds later, all solenoids returned to their previous positions.

The cause was eventually traced to an unusual operation of the trolley.  In an attempt to limit trolley motion the drive switch on the control panel was repeatedly “tapped” in a rapid fashion.  This did not allow the motor to slow down enough to allow the starter winding to kick in which allowed large in-rush current.  The current was enough to load down the entire system including the power supply for the trolley controls, which caused the controls drop-out.

Later the same effect was observed to a lesser extent on the upper resonator trolley which used identical motors and controls.

Proposed solution is to either to limit large inrush current or preferably to replace the existing motor with a DC motor and controller.  A DC motor has the added benefit of now allowing true speed control.

No attempt is being made to modify the system until after the shutdown.  All trolley operators are being instructed to not use this method to attempt to control positioning of the trolley.  It is unlikely that it would help in positioning even if the system could handle the current overload.

Noticed oil leaking out of reduction box, scan and swipe, disconnect e motor and all related cables from bridge, remove motor and reduction box assembly with over head crane, disassemble reduction box, grease broken down and separated likely cause of leak. Inspect bearings and internals for wear -all good

re assemble with new grease and gaskets (we added two grease nipples to the bearing housing to aid lubrication), test e motor on its own- good. Mount motor and box as unit adjust chain for tension and final test - good

Cyclotron lid down was successfully completed on July 2 2014. Lid went partially down before jack nine had to be jogged to catch up to system. After thirty min of continual system trips Maico Dalla Valle and I Jogged all stations to 42745. Still encountering continual system trips Gord Roy and Dan Louie removed and reset all relays in system, lid proceeded to lower with out problem. Final jack position recording done at 19:45.

Routine maintenance as per Mike Gallop's written procedure took place in December with the only non routine service being the changing of shaft seals on Vacuum trolley drive reduction box.

Trolleys maintained - Lift trolley

                                     - Vacuum trolley / Tool trolley

                                     - Camera trolley

                                     - Upper resonator trolley

Lid up recap for  March 26th 2015.

Start time 14:50        Master- 33                               Finish 15:25        Master -47413             Zero jogs to system.

• 1- 36                                                                47386                                                          
• 2-38                                                                 47378
• 3-33                                                                 47374                                                       
• 4-36                                                                 47382
• 5-36                                                                 47394
• 6-36                                                                 47385
• 7-37                                                                 47398
• 8-33                                                                 47373
• 9-38                                                                 47395
• 10-38                                                               47395
• 11-38                                                               47395
• 12-36                                                               47393

Lid down Start at 11:17, lid went down without any issues or stop's. Lid finish at 11:45

Start count              Finish count

1- 47386                   47

2- 47378                   49

3- 47374                   45

4- 47382                   46

5- 47394                   47

6- 47385                   48

7- 47398                   49

8- 47375                   45

9- 47395                   50

10- 47395                 49

11- 47395                  51

12- 47393                 49

Serviced the Camera trolley this morning as per Mike Gallops service outline.

Lid up procedure Started at  12:00pm. Initial numbers. # 1-47,2-49,3-45,4-47,5-47,6-47,7-49,8-45,9-50,10-50,11-51,12-49. After a number of unsuccessful attempts at jogging the system and trouble shooting it was decided to suspend operations record numbers  and resume on Feb 2nd. Final numbers for Feb 1st #1-1289,2-1297,3-1288,4-1295,5-1283,6-1298,7-1287,8-1289,9-1290,10-1296,11-1287,12-1296.

Feb 2nd commence lid up operations at 11:30 am .When Maico Dalla Valle and my self arrived Dan Louie and Arther Leung had attempted to trouble shoot elevating issues and lowered the lid in hopes that raising would be smoother . The counter numbers on our arrival where as follows station   # 1-2856,2-2858,3-2848,4-2857,5-2855,6-2861,7-2856,8-2857,9-2852,10-2862,11-2860,12-2859. After Discussion between Grant Minor, Dan Louie and all involved it was decided to lower the lid re gap the yokes and reset counters to base numbers ensuring they correlated with master synchro. lowered lid numbers #1-55,2-59,3-55,4-57,5-57,6-54,7-50,8-54,9-59,10-59,11-58,12-59.

At this point we re gapped to .250" with counters at #1-119,2-177,3-123,4-144,5-137,6-120,7-123,8-111,9-127,10-148,11-128,12-117. After comparison with Dan L and the Master Synchro, stations #2,3,4,5,10 where jogged to better match the average on the counters and synchro these stations where put at 120 on the station counters. Once this was completed we started final lid up operations stopping at 5" to check tank seal, once it was confirmed the seal was not sticking we continued uninterrupted  to final lid up position. #1-16947,2-47366,3-47351,4-47365,5-47362,6-47365,7-17495,8-47358,9-47360,10-47366,11-47362,12-47363. Counters #1 #7 appear to be failing, they will be changed out and indexed to match as needed.

Lid down Started at 12:15, station and count numbers. Lid went down with out incident as station 1 and 7 show the counters will need replacing. We are going to change counters before the end of this shutdown to ensure proper orientation in case of emergency lid up scenario. 

Start          12:15                   Finish    13:15                 Master #47383   Master final 38

1-16047                    76303

2-47366                           44

3-47351                          41  

4-47365                          43

5-47362                          42

6-47365                          43

7-17495                  49568

8-47358                         40

9-47360                          44

10-47366                       44

11-47362                        45

12-47393                      43

Maintenance has been performed on the lift trolley, re sealed the main drive gear box it was quite dry inside and in need of new seals and lubrication. Inspected the vertical gear box and resealed it, re tensioned  the vertical drive chain after removing gear box and finding since last year the chain had become somewhat slack causing it to rub on the frame. Purchased a new LED light bar to replace the aging and failing flourescent light that was in place. greased all pillow block bearings and replaced old Zerk ( grease nipple) on some bearings to allow for easier lubrication.

Annual jack maintenance : Jack 10b upon inspection it was found that the output shaft seal on 10b was in need of replacement. In past years RH personal had to remove a LoveJoy coupling which required cutting of the coupler due to galling and possible interference tolerances being out. We sourced sample split seals from Motion Canada that can be installed with out coupling removal we will install and monitor to determine the effectiveness and the possibility of converting all jack stations to this seal design . Attached are pictures of old seal style, new style seal, worm, wheel housing, current coupling on shaft, old coupling that has been cut off and various components. The jack components appear to be in good working order, no extra ordinary maintenance needs to be performed besides seal replacement. 

Prior to commencing work on jacking stations we installed a wall mounted come along plate as per Jason kapalkas instructions   Completed spare jack swap on station 11 and 12, station 11 was swapped with spare set # 13 and station 12 now has # 14 jack set in its place. Once jack stations where swapped we proceeded to clean, inspect and re grease 11-12 upper bearings.

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.

Upper and lower resonator trolleys received mounting plates and brackets to accommodate DC motor controls for updated drive motors.