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Entry  Friday, January 31, 2014, 10:07, Travis Cave, Cyclotron, Standard Operation, 2C removal 

2C has been successfully removed from the cyclotron and is now currently sitting in the B2 level of the RH building. A tank access was needed to feel the stuck QDL.

Entry  Wednesday, February 04, 2015, 13:57, Travis Cave, Cyclotron, Standard Operation, 2C removal 

2C has been removed from the cyclotron.

Entry  Friday, February 07, 2014, 10:50, Travis Cave, Cyclotron, Standard Operation, 2C install 

2C has been installed into the cyclotron.

Entry  Tuesday, February 28, 2017, 15:45, Jason Kapalka, Cyclotron, Standard Operation, 2C extraction probe removal and reinstallation 
2C extraction probe was removed from cyclotron tank on 2017-02-07 by RH and Probes group members with service
bridge, upper resonator trolley, and 2C attachment. Three QDLs were disengaged remotely, while one had to be
disengaged locally in the tank (just like in 2013, 2014, 2015, and 2016).

Probes group performed annual PMs on EX2C.

EX2C was reinstalled in tank on 2017-02-28 by RH and Probes group members using service bridge, upper resonator
trolley, and 2C attachment. On first installation run, an intermittent failure occurred on one QDL actuator
solenoid. Trolley was driven off service bridge, a faulty solenoid was bypassed and an alternate solenoid on
EX2C attachment was connected, and trolley was driven onto service bridge. On second installation run, a
minor misalignment issue occurred between LRZ interface between EX2C probe and drive motor on the upper tank,
even though all four QDLs were correctly aligned; this issue was resolved with finesse (micro-adjustments) and
patience (multiple engagement attempts). Probes group performed a successful continuity check on EX2C. Service
bridge was pulled from tank.
Entry  Tuesday, February 14, 2012, 15:40, Grant Minor, Trolley, Standard Operation, 2C Removal - all 4 QDLs were actuated remotely this year! 2C_probe_Feb_14_2012_labelled.JPG2C_probe_solenoid_5_Feb_14_2012_labelled.JPG

Today Remote Handling staff (Maico Dalla Valle, Travis Cave) used the Remote Handling 2C probe removal trolley to remove the probe assembly from inside the Cyclotron.  This is a regular yearly MRO task that is done every shutdown.

This task involves lining up the 2C trolley on the service bridge with the 2C probe assembly remotely with cameras, using a set of alignment markings on the trolley and probe assembly.  Once the trolley is lined up with the probe assembly, a set of solenoids are fired to disengage a corresponding set of four QDLs (quick disconnect latches) at different locations on the probe assembly.  A complete procedure is documented by Remote Handling staff.

The four QDLs are actuated by a set of four solenoid actuators on the 2C removal trolley, numbered 3, 4, 5, and 8.

Traditionally in the past, the QDL actuated by solenoid 8 has  jammed and does not automatically disengage when hit with the solenoid actuator.  A member of Probes or Remote Handling has had to suit up with a respirator, run into the Cyclotron tank, and tap this QDL by hand to free it from it's jammed state.  This has been done every year for quite some time, as long as Don Jackson can remember (around 30 years)!

However, today, Remote Handling staff (Travis and Maico) were able to disengage all four QDLs remotely using the solenoid actuators on the trolley!

 

A few things were done differently this year compared to previous years, which may have contributed to this success:

a.  The centre post bearing on the service bridge was disassembled, cleaned, and lubricated (see previous e-log from this shutdown)

b.  The "AXIAL A" alignment tab on the 2C removal trolley was intentionally misaligned with the felt pen markings on the 2C assembly (see attached picture that points out this "gap").

c.   The solenoids were fired in the following order: 8 (no success on disengagement), 5 (success), 4 (success), 3 (success), then 8 again (success).

 

After all four QDLs were disengaged, and the probe assembly was lowered away from its fixture points, it was observed that the assembly moved slightly laterally, indicating a slight stress or misalignment between all four QDL pins and their corresponding receptacles in the Cyclotron tank. The "gap" labelled in the attached picture, shrunk a small amount after this lateral movement.

Don Jackson remarked that in his entire tenure here, he had never witnessed successful remote disengagement of all four QDLs!  This is quite a positive result, as it lowers the expected dose and time required to remove the 2C probe assembly.  This approach to the task should be repeated next year and video documented (unfortunately we were not video recording the successful attempt this year).

Cheers,

Grant Minor, Remote Handling

 

Entry  Tuesday, February 17, 2015, 11:28, Travis Cave, Cyclotron, Standard Operation, 2C Installation 

2C extraction probe has been re-installed in the cyclotron. After some problems on the first install attempt, do to a busted micro-switch that was causing the 24 Volt DC system to short out.

Entry  Monday, February 06, 2017, 20:32, Jason Kapalka, Elevation Jack, Maintenance, 2017 Cyclotron Elevating System Maintenance  Cyclotron_Elevation_Maintenance_Rotation_Record_20170829.xlsx
The Cyclotron Elevating System planned maintenance work this year was performed on Jack Station #3, #8, #9, and #10.

Start date: January 10, 2017
End date: January 23, 2017

Lockout procedure
 - Performed electrical lockout of Cyclotron Elevating System

Jack Station #10
 - Disconnected power from electric motor
 - Noted initial station counter reading and yoke gap
 - Removed limit switch
 - Removed complete spare set #14 from station (2x Duff-Norton screw jacks, 2x Highfield gear reducers, and 1x electric 
motor)
 - Installed complete original set #10 onto station (2x screw jacks, 2x Highfield gear reducers, and 1x electric motor)
 - Installed limit switch
 - Set yoke gap and station counter reading according to initial values
 - Reconnected power to electric motor


Jack Station #9
 - Noted initial station counter reading and yoke gap
 - Removed 2x screw jacks from original set #9 for early inspection
 - Lifted 2x screw jacks to RH active shop
 - Broke-out worm-screw from screw jack #9R
 - Inspected worm-screw and worm-gear surfaces: observed discoloured grease, similar to that found while servicing this 
screw 
jack in 
September 
2015
 - Decided not to reinstall screw jacks from original set #9 so that they can be serviced again after shutdown
 - Installed 2x screw jacks from spare set #14
 - Set yoke gap and station counter reading according to initial values

Jack Station #8
 - Disconnected power from electric motor
 - Noted initial station counter reading and yoke gap
 - Removed complete original set #8 from station (2x screw jacks, 2x Highfield gear reducers, and 1x electric motor)
 - Installed complete spare set #13 onto station (2x Duff-Norton screw jacks, 2x Highfield gear reducers, and 1x electric 
motor)
 - Set yoke gap and station counter reading according to initial values
 - Reconnected power to electric motor
 - Lifted complete original set #8 to RH active shop for inspection and servicing
 - Inspected and serviced upper bearing: ok

Jack Station #3
 - Unable to remove screw jacks from original set #3 for inspection and servicing since there no remaining spare screw 
jacks 
available
 - Decided to postpone removal of complete original set #3 until January 2018
 - Inspected and serviced upper bearing: ok

Pre lid-up preparations
 - Tested Jack Station #8 and #10 to verify correct motor phasing
 - Indexed all jack stations to 0.25"
Entry  Wednesday, January 27, 2016, 10:51, maicodallavalle, Elevation Jack, Maintenance, 2016 Cyclotron Elevation System Maintenance  

The Cyclotron Elevating System Shut Down  work done this year was done on Station #9 and Station #10.

 

 Work done on Station #9

                       - note the readings on the Station counter and the gap clearance on the Yoke.

                       - Remove all the spares from Station #9 Elevating system (Spares are made up of two Jacks, two Highfield gear reducers,and one electric motor)

                       - Reinstall the complete serviced original Station into Station #9.

                       - Set the noted gap on the Yoke and the same readings on the Station counter.

                      - Station #9  Jacks were found to have some discoloration on the worm and worm gear. Next shut down they will be taken out and inspected and reinstalled.

 

Work done on Station #10

 

                        - Note the readings on the Station counter and the gap clearance on the Yoke.

                        - Remove the complete Station #10 Elevating system.

                        - Install the complete Spare Elevation system(Station#14) into Station #10.

                        - Set the noted gap on the Yoke and the same reading on the Station counter.

                        - The complete original Station #10 is taken to the Remote Handing Active Machine shop where each component will be inspected and serviced.(This Station will be ready to be reinstalled during next years Shut Down)

 

 

 Electric Motors have been reconnected on Station #9 and #10. We have not been able to test them until all the Interlocks have been satisfied. This may happen on Monday February 1st. 

 

 

 

 

Entry  Friday, January 23, 2015, 10:27, maicodallavalle, Elevation Jack, Maintenance, 2015 Jack Maintenance - Stations #4 and Station #9 

The Cyclotron Elevating System Shut Down  work done this year was done on Station #4 and Station #9.

 

 Work done on Station #4

                       - note the readings on the Station counter and the gap clearance on the Yoke.

                       - Remove all the spares from Station #4 Elevating system (Spares are made up of two Jacks, two Highfield gear reducers,and one electric motor)

                       - Reinstall the complete serviced original Station into Station #4.

                       - Set the noted gap on the Yoke and the same readings on the Station counter.

 

 

Work done on Station #9

 

                        - Note the readings on the Station counter and the gap clearance on the Yoke.

                        - Remove the complete Station #9 Elevating system.

                        - Install the complete Spare Elevation system in Station #9.

                        - Set the noted gap on the Yoke and the same reading on the Station counter.

                        - The complete original Station #9 is taken to the Remote Handing Active Machine shop where each component will be inspected and serviced.(This Station will be ready to be reinstalled during next years Shut Down)

 

 

 Electric Motors have been reconnected on Station #9 and #4. We have not been able to test then until all the Interlocks have been satisfied. This may happen on Monday January 26th.

 

The Upper Bearing are needed to be serviced on Station #5 and #10. We wound like to do this work this Shut Down.This work can be done after the Cyclotron lid has come back down after service and maintenance has been done inside the Cyclotron.

 

 

 

 

 

 

Entry  Tuesday, September 25, 2012, 08:57, maicodallavalle, Elevation Jack, Maintenance, 2012 Service Maintance of #4 Station Jacking System  

Shut down work for 2012.Replaced serviced Jacking Station #6. Tapered alignment pins were damaged. They were skimmed and checked and installed. Station #4 was removed and the spare Station was put in its place.Station # 4 Upper Bearing was inspected and serviced.Station #4 had a problem with the Jack on the right side.The coupling hub than joins the Jack to the High Field was installed backwards.(Not sure how long the hub has been like this maybe 15-20 years?). The coupling and hub had to be cut/split apart to get them off of the Jacks shaft. A new coupling and hub was machined and installed. Anew shaft seal was installed next to the new coupling hub. All the old grease was removed from the Jack. The Jack was inspected and then new grease was replaced. The left Jack was also serviced. It was taken apart and the old grease was removed. The Jack was inspected. The shaft seal on the other side of the coupling hub was replaced. New grease was replaced. The two High Fields had the oil drained. They were inspected and new oil was replaced. #4 Stations motor has four mounting bolt holes and two tapered pin holes for alignment. The one tapered pin hole in the front right side of the motor had a small hairline crack. The paint was removed in the area where the crack was so it could be welded.(The motor base is made of Cast Iron). The crack was  welded with 309L SS welding rod. After welding the tapered pin hole was checked with the tapered pin.(It was OK). The #4 motor was bolted to the service area work bench. An Electrician hooked the motor up for testing. The motor was greased  and then  it was  started.  It ran nice and smooth.           

Entry  Tuesday, May 07, 2024, 09:35, Adam Newsome, Elevation Jack, Standard Operation, Lid down operation (third) - 2024  Motor_Contactor_6_-_2024.PNGElevation_System_Checklist_-_2024_Lid_down_-_third.pdf

A third lid down operation took place over May 6-7, 2024.

The system was energized a few minutes ahead of time.

Starting master synchro value: 47387 (after it was jogged up slightly prior to starting).

Upon startup on May 6 at 14:42, the system worked fine and lowered the lid. The lowering was paused at 15:28 (master synchro value of 17593).

Jack 6 exhibited issues similar to previous lid up (see e-log 166). It was likely due to an issue with a motor contactor. Electricians were contacted but could not work on the issue until the following day so the lowering was paused.

 

At 07:30 on May 7, electrician Randy Boehm determined that a cable connector on the motor contactor was loosened. After tightening the cable, jogging motor 6 was tested - OK.

 

Lid down commenced again at 08:10. Master synchro: 1915.

The lowering was stopped at approximately 1" gap as per standard procedure for Operations to perform checks. The lowering was stopped again multiple times to check resonator latching - OK.

End time: 08:37

Ending master synchro value: 59

Jogged master synchro value to 2, adjusted station 12 to match.


Notes: It was observed that at lid down Jack 12 did not have any gap. Jack 12 was jogged to match synchro values with the master synchro but still exhibited a 0.125” gap instead of the ideal 0.25” gap. It is recommended to keep an eye on Jack #12 during the next operation and check the motor contactors for loose fittings. In the before and after photos of the motor contactor it looks like the fitting on the bottom right corner of the motor contactor could have either come loose from the vibrations or the screw was sheared off. Further investigation is required.

See attached summary.

 

Entry  Thursday, February 02, 2023, 07:05, maicodallavalle, Service Bridge, Repair, Hinged Festoon Rail at Cyclotron  

The Hinged section of the festoon rail at Cyclotron has a piston to keep rail in the up position for shutdown work (Bridge and Trolley in tank work).

A plastic liner for the piston has fallen apart and needs to be replace.

A spare one has been temporarily put into  place until another one has been machined and reinstalled.

 

Entry  Wednesday, October 16, 2024, 11:37, Adam Newsome, Service Bridge, Development, Bridge Lift Mechanism Refurbishment (Phase 2 of 2) - Complete  6x

See previous e-log for phase 1: e-log 134

 

Phase 2 of the bridge lift mechanism refurbishment was completed. The scope of work for this phase includes replacement of the hydraulic pump (including dump valve) and associated controls hardware, plus some portion of the hydraulic tubing which interfaces with the pump itself. Work was completed by Hyseco under work permit C2024-10-02-2.

The pump was integrated such that existing operator control functionality was maintained, except for one difference: with the new system, the pump does not run all the time when the operator turns the "pump on" switch on. Rather, the pump is turned on during the action of raising/lowering. This was deemed acceptable by operators.

During installation, flow rates were adjusted by Hyseco techs to achieve the desired performance in terms of raising and lowering speed. It has been noted that raised appears to be slightly more smooth and even than previously. Lowering behaves similarly to previous. Furthermore, the new pump is much quieter.

Due to the relative simplicity of this system, a full commissioning report was not created, but the following commissioning tests were performed multiple times between 2024-10-14 and 2024-10-15:

  • Turn pump enable on
  • Raise bridge to maximum upper limit and confirm it stops automatically
  • Lower bridge to rest on centre post support stand
  • Dump to fully disengage cylinders

These tests were successfully completed and witnessed by A. Newsome, T. Cave, R. Sykes, J. Zhang, N. Jorgenson, M. Dalla Valle, and the Hyseco techs. Therefore, the system is considered commissioned and operational. Some minor wiring cleanup remains to be done and the system will be tested again multiple times prior to shutdown. A maintenance manual will be requested from the vendor.

The old pump will be kept for ~3 years as a spare.

 

Update 2024-10-21 [AN]:

For reasons unknown, the system is no longer functioning. There are two issues, which may be related or may not be:

1. Previously during the aforementioned testing the hydraulic pump motor was powered via 120 VAC wall outlet. Now it is being powered from our Carrier (ultimately from the blue power supply box in B2 level). There are large line losses associated with this. We measure approximately 35 VAC drop at the input to the pump when attempting to run the system. Because of this, the 24V supply located in the pump's control box used for enabling the motor and for the relays is dropping out, which turns the pump off immediately and causes chattering. When this 24VDC supply is separately powered from wall outlet, it does not drop out, but still the large line loss voltage issue remains for the pump motor. Based on an estimate of around 100 ft long wiring, the line losses measured suggest an inrush current of approximately 50A. This seems relatively high given the pump's FLA of 10A. This should be investigated further. Perhaps it is related to the second issue listed below, or perhaps the motor should be switched to 240 VAC, or perhaps the wiring should be changed from 14 AWG to 10 AWG to reduce losses.

2. When pressing the "down" button, the system moves up. There is no way to move down aside from dumping. Even when disconnecting the control signals entirely from the valves and manually pushing them in, both valves cause upward motion. Suspect an issue with hydraulic line plumbing or the valves themselves.

Hyseco engineer will be contacted and further troubleshooting will take place this week. This log will be updated accordingly.


Update 2024-10-29 [NJ]

The issue of the system moving up when pressing down is resolved. Hyseco engineer returned to repair. It was determined the the relief valves by nature have some leakage and because the flow control valves were so tight more fluid was travelling through the leakage than the control valve. The relief valve was moved to be before the flow control valve, which seemed to resolve the issue.  Additionally one of the pressure gauges was replaced.

 

 

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