The HE2 probe was removed from the cyclotron today following the procedure in Document #126165.  An orbital bridge position of 247.35° provided better alignment than 247.2 from the procedure.  The probe signal head was intentionally left in the "up" position by Diagnostics Group which did not cause any issues with removal.  Trolley elevation when the frame contacted the base of the probe was 53.8".  No major issues were encountered. The probe will be returned to the tank of Diagnostics Group have converted the radial drive to a bellows feedthru.

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"

200, 400, 500, 600, and a pallet of 700 series of shield have been installed in the cyclotron.

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. 

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.

The shield door on the B2 level of the RH building has been closed.

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

The new EX4N housing assembly drawing TEC0071 (unfinished) was installed and connected to the EX4 tank side port flange over a 3 day period from Feb29 – Mar 2, 2016. This was a hands on installation spread amongst 5 people with the total accumulated dose was 2.97 mSv.  See W/P C2016-02-29-5
 

Attached are;

- Rad field survey map.
- Updated installation procedure (rev4) with additional notes/comments during the installation  Revisions in Red.  Competed steps in Green. 
- Photo of the EX4N housing assembly.

Recent photos, are on Dimo's S drive :S\dyosifov\Extraction 4\Photos 2016

EX 2C has been installed back into the cyclotron.

Ex 2C has been removed from the cyclotron. A trip into the tank was needed to free the probe, hung up on the usual spot.

 The HE1 Probe was reinstalled into the cyclotron this morning following Section 3.2 in Document-126165 (to be reviewed and released after camera view screen captures added).  The procedure took approximately 1 hour from when the trolley was moved into the cyclotron tank until when it was removed.  Camera view screenshots were captured throughout the procedure and the probe head was inspected with the left outrigger camera after installation to check for abnormalities - none found.

In Step 3.2.7 of the procedure view #6 was checked to ensure the inner-member was fully retracted before actuating the stop tab - consensus was reached among Remote Handling and Probes Group personnel that the inner-member was fully retracted, but in fact what appeared to be the pulleys at the end of the inner-member in the camera view was actually part of the inner member frame.  The stop tab hit the inner-member when it was actuated pushing it backwards.  No damage was caused, but a note will be added to the procedure to avoid this in the future.  Other than this the installation went smoothly and there were no deviations from the procedure.

The HE1 Probe was removed from the cyclotron this morning following the procedure in Document-126165 (currently in draft status, to be released after the probe has been reinstalled).  The procedure took approximately 2 hours from when the trolley was put into the tank until when it was removed from the tank with the probe.  The procedure took from 8am - noon including putting the bridge into the cyclotron, and removing the probe from the trolley into the Probes Group work area on the B2 level.

No major surprises were encountered during the procedure.  Camera view screen captures were taken at each step to be added to the procedure.

Possible improvements to the procedure and equipment include:
1. A flow restrictor should be added to the inner-member stop tab air line to slow movement
2. The inboard guide views on both sides (camera views #7 and #8) would be more useful if they were more zoomed in
3. It would be useful to be able to turn off the trolley fluorescent light at the inboard end once the bridge is in the tank (it caused glare in some views)
4. The opposite side latch camera view (camera view #5) seems to not be secure enough and was bumped slightly out of position during trolley move, try to secure better
5. In Section 1 of the report it would be better for a final check of each view with the probe mockup to be done after the trolley has been lowered to the bridge
6. The probe didnt lower freely immediately after unhooking the outboard latch.  After slight lowering of the frame and a few up and down movements it became free.  It is suspected this is because of too much upward force on the probe from the frame due to the inboard tip being tilted too high.  Steps have been added to the procedure to prevent this in the future.  Another possible improvement to the equipment would be load cells on the trolley or between the trolley and frame

All cyclotron in tank work is completed.

All shadow shields have been installed. Ladders, the pothole covers and the second rad survey will be done tomorrow.

outrigger 1 had a power failure, bridge was removed power restored and outrigger parked, outrigger will be looked at once the shield are done hopefully.

all 200, 400, 500, 600, and some 700 series of shield are in.

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.

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. 

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.

The shield door on the B2 level has been opened.