2018 Cyclotron lid up problem. Station #9 was  found to  have the motor wires along the beam plain had damaged wire insulation. There were bare wires in the conduit resulting in the wires shorting out. The wires were repaired with a quick short replacement. Lid went up for in tank work. After lid down the problem was investigated. We checked the radiation levels   at all  of the stations to come up with a plan to determine witch of the stations had the highest levels. We found that stations 1,3,5,7,9, and 11 had the highest levels. Station 1 was inspected and all wires were replaced to the T elbow. Station 3 all wires were replace to the T elbow. Station 5 all wires were replaced  to the T elbow. Station 7 all wires were inspected and were in good condition and put back into place. Station 9 all wires including syncro were replaced all the way to the junction box. Station 11 motor wires were good, but the jog wires and the syncro were replaced to the pull box. All of the jog switches on stations 1,3,5,7,9,and 11 were falling apart when wires were inspected.  New switches were ordered and assembled. At the start of 2019 shutdown all jog switches were replaced on stations 1,3,5,7,9, and 11. After all the jack work was finished the jog switches were check and were working well.

I have refilled the water package on T1 with DI water. The Expansion Tank is at 37cm. This may change when pump is turned on.

I have filled the water package on T2 with DI water. The expansion tank is at 38.1cm. This may change when the pump is turned on.

On Sep. 3^rd during the 6 hr maintenance day, Doug Preddy & I went into the 1A tunnel under “controlled access” to investigate a water leak that triggered the Water Detection Sensors.  It was also noticed that the Cu-ALCW tank level was losing water.

Water was found to be leaking down the south wall chase where the T2 water package goes up the wall. Drip rate was ~1 drip every 15 seconds.

In the late afternoon of Sep. 9^th;

Day one of the 1.5 day maintenance, the tunnel was surveyed by Fiona H. see RPG for field map & floor swipe results. 

Doug, John McKinnon & I set up a plastic sheet with a funnel connected to a 8ft. lg. poly-flow tubing to direct leaking water from the T2 into the south gutter.  This set up was left over night for the floor to dry up and resume the water leak investigation. See photos.

On Sep. 10^th;

@ 08:30 about 70% of the 1A tunnel floor had dried up and the diverted water into the south side gutter had travelled to the T1 area.

The T2 cooling package was then turned off followed by valving off the Cu-ALCW feeding the T2 cooling package. A few more strips of red tuck tape were added to secure the temporary plastic diversion sheet.

@ 11:30 the x-strip graph (T/W  MS 230) of the Cu-ALCW tank level showed that the leak had stopped and leveled off.

@ 13:15 the 1A tunnel floor had dried up with no water seen dripping from the vertical chase.  Doug also mentioned that the “water sensors” that were activated reflected this. The Cu-ALCW was then valved back on to the T2 cooling package and within 3 minutes water began dripping from the south wall vertical service chase which now appeared to about  1 drip/sec.

Fiona took a water sample (20 ml vial) from the drips and also found ~ 1000 c/m (44-2 monitor) on the tacky mat just on the inside of 1A tunnel door.  The 1A Tunnel and South TNF were then locked-up by Derek H., Violeta T. & Doug.   The T2 cooling package was turned back on ok.  Will try to repair this water leak during the Oct. mini shutdown.

On Oct 7^th, during the Mini Shutdown, the T2 cooling package was uncovered to investigate the Cu-ALCW water leak dripping into the 1A Tunnel.

The Target shield block was lifted and found that top of the monolith was dry.  Uncovering the east side of the cooling package directly above the vertical services on the south wall revealed a pin hole leak at a 1/2” 45^o copper elbow on the return line circuit of the T2 cooling package.

The cooling package was turned off followed by valving off the Cu-ALCW service lines leading up to the cooling package to let the Tunnel floor dry over night.

On Oct 8^th, the Tunnel floor was dry and Cu-ALCW service lines feeding the cooling package were drained from the Tunnel by placing a 5 gallon pail under the drain lines filling it about 1/3 full until it stopped.

Mel Good was brought in to replace the faulty elbow.  The Cu-ALCW was then turned back on with no obvious leaks.  At 16:00 approximately 1.5 hours after the repair, I went into the 1A tunnel to inspect for water leaks at the isolation valves and saw water dripping down the vertical piping on the south wall again.   

Another leak was found on the 90^o elbow just ahead of the replaced 45^o elbow. There appeared to 2-3 fine mists spraying out towards the adjacent copper elbow (look at the end of the cable tie on the following photos).

The Cu-ALCW lines leading up to cooling package were again valved off to let the Tunnel floor dry up over night.

On Oct 9^th, the Cu-ALCW lines leading up to the cooling package were again drained followed by replacing the faulty 90^o elbow. The elbow was fitted with new pieces to improve the configuration. We noticed that old copper pieces were worn thin. These damaged parts measured 20,000 c/m on the 44-2 and 40 c/m on the RM-14 monitors and were taken to the RH H/cell lab for inspection.

The T2 cooling package turned on ok about 1.5 hours after repairing the 2^nd water leak.

Mel Good received 0.03mSv over the two day repair. 

I received 0.10 mSv over three days, picking up 0.05mSv on Oct 7^th in the Tunnel where the fields were 200-300uSv/Hr by the isolation valves.  The next the day levels dropped to 40uSv/Hr.  There was no contamination found on the Tunnel floor, however 80,000 c/m on the RM14  and 50,000 c/m on the 44-2 monitors were found on the swipes taken at the bottom edge of the concrete shield blocks.

NOTE: the Cu-ALCW service lines leading up to the T2 cooling package feeds the following 4 devices; Collimator A, Collimator B, the T2 monolith cooling and the Target water heat exchanger.

On 14Oct2014, the 1AT2 Collimator B water outlet temperature rose to 100^o C. 

Summary: Clarification of T2 water temperature readouts

Detail: This e-log entry by Doug Preddy is being made to clarify the T2 water package temperature read outs. The temperature read outs on the T2 water package have been switched. The read out for inlet temperature is actually the outlet temperature and the read out for outlet temperature is actually the inlet temperature. On Sunday Oct 19 2014 at 19:45, the T2 water outlet Temp (T2) started to climb giving warning messages at 20:05. Operators tried to decrease the BL1A current, but the temp. continued to climb and eventually tripped the beam off. Operators defined BL1A OFF, and continued to inject to BL2A only. They tried to contact I. Earle, but were unable to. They left message with D. Preddy. The T2 temp. stayed at 45 deg., operators tried to reset the water package and start it, but it tripped almost right away, and increased the temp. by 0.5 deg. Beam was left off. On Monday Oct. 20 Ron Kuramoto found a replacement thermister. It was wired in to the BOP over the south catwalk. The T2 outlet temperature immediately dropped to ambiant. From this test it was concluded that the installed thermistor on the T2 outlet water pipe had failed. The wiring was restored to the original configuration. It was decided to switch T2 Water Inlet Temp and Outlet Temp sensors at the T2 electronics rack to provide a trip on the Inlet Water temperature instead of the outlet Water Temperature. As the T2 water package runs in a closed loop, the outlet temperature signal has been swapped with the inlet temperature by Doug P. and Tony T. This will provide thermal protection (trip at 45C) in addition to the T2 Target high limit bit (trip at 60C). The water flow to this circuit is also monitored and will trip if the flow drops. This action was approved in a meeting with Doug Preddy, Ron Kuramoto, Grant Minor, Yuri Bylinski, Lia Merminga, and Bob Laxdal present on Monday Oct 20th. There is a second, redundant temperature sensor on the outlet of the target water which was installed recently as a safety upgrade to protect the heat exchanger and meet CSA pressure vessel code, see dwg TBP0902. There is a controller for this sensor with a hard-trip switch for the cyclotron, and a temperature read-back display on the Meson Hall mezzanine racks. This read-back should be monitored by operations once per shift while beam is on target to ensure that outlet water temperature is stable and at an expected value. Sensor cabling swapped at Meson Hall, south mezzanine, bay 1, B.O.P. #3. Sensor T1, cable #12102 moved to TB1, terminals 3 & 4. Sensor T2, cable #12105 moved to TB1, terminals 1 & 2. Defeat #7131 removed. Defeat# 7133 Fault report #7722   Will look into replacing the faulty Thermister in the 2015 major shutdown.

Today the T1MK2 target was moved from Position 4 to Position 0 to lower the Rad fields for the 1AM7 repair in the 1A Tunnel. The Rad levels were still to high only dropping by 1000uSv/Hr to 5000uSv/Hr, so the 1AM7 repair is planned for next Tuesday's maintenance day on Oct 6th.  1A will be off till then giving a longer cool down. 

The target was then moved moved back to Position 4 with the Pot ratio reading 0.699. The target was moved using the portable Control box.  The "power on light" on the Control box needs to be replaced.

Note: The MS connector on the 1AT2 cable needs to be tighten before using.  It became loose when swapping the portable Control box cable to the 1AT1 cable.

The cooling package turned on ok after the vacuum was established.

Don Jackson assisted me with this operation and was appriciated....

 A 4” Marmon aluminum blank-off flange and o-ring were replaced on the south port of the T1 target monolith vacuum vessel. This port was accessed from the 1A Service Tunnel were the repair took place.

See the attached pdf file “1AT1 Vacuum Leak Repair-Feb2020” for a summary of the repair.

Feb 1 2024

Hand Pump observed to be losing pressure at full extension of cylinder, seals likely blown. Due to Enerpac P84 being an obsolete model, a newer model hand pump was ordered.

Feb 15 2024

Hand pump (Enerpac P84 Ultima) installed at Indium Extruder Station, observed to work properly in both directions of flow, deemed operational. 

 March 29 Monday

- moved T1-MK1 target from beamline to hotcell  (field from target 15mSv/hr @ 0.5m)

- flushed water through position 4

- flushed air through all positions

- left air running @ 5psi overnight through position 5

- potentiometer reading "O/L" at position 3, all other positions OK

- all micro switches OK

- removed the left plug (when facing ladder) at position 1 , but after reading elogs it was found that the right plug at position 1 was having issues. Will have to replug left with new plug

March 30 Tuesday

- pumped down with cold trap, started at 10:00

- test port 2.0 E-1 Torr after 1 hour

- cold trap removed, cleared, dried, refilled

- 11:10, started pumping, found leak at lab vac tubing joint. Fixed.

- 11:16, started pump again

- 11:24, 1.0 E-3 Torr TPP, 1.4 E-9 L/s leak rate

- preformed leak check, no response at all locations

- position 4 Be target removed (required hammering). Damaged spot, potential start of hole observed at center of beam spot (see attached photos)

- position 5 graphite target removed (required hammering)

- New 12 mm Be target #108 installed at position 4

- New 12 mm Be target #109 installed at position 5

- leaving position 3 plugged as the potentiometer is reading "O/L" as indicated from the multimeter 

- New plug installed on left side of position 1

- 15:47, stated leak check pump down

- 15:57, 2.0 E-3 Torr 

leak check results

All positions were no response (NR) except

Position 1, Right side plug) 5.9 E-8 Torr

Position 3, Left side fitting) 5.3 E-9 Torr

Position 4, Left side fitting) 4.2 E-9 Torr

All locations should be H2O tight

March 31 Wednesday

- took vertical and horizontal measurements of the new position of 4 and 5 targets (updated elevations PDF sheet included)

tested profile monitor activation

- started moving at 15 psi 

- reached limit at 35 psi

- both limit switches OK

- Cleaned base of vacuum flange and top of support ring

- prepared target ready for transport with flask (ladder in position 0)

- contacted MCR to update XTPAGE 7L target details

- emailed Tony Tateyama to have PLC lookup tables updated with new target info

With the assistance of Maico we changed the paddle wheel, o ring, and shaft in the Collimator A flow meter (Q4) at the T2 package.

Flow meter was wiped clean to ensure o ring surface was clean.

Everything was changed without incident, and ops confirmed that the flow rate is now normal.

 this Work was done on 09 Dec 2021.

Since Isaac Earle was leaving Triumf he was giving us (maico, chad, adam, and myself) a demonstration of how to remove targets, protect monitor, and wire scanner. During the removal it was noticed that one of the pins for the wire scanner was bent and it would not be possible to reattach without straightening the pins.

Luckily the fields from the ladder were low enough (374 uSv/h) and we were able to retrieve the wire scanner and manually bend the pins back. The wire scanner was reattached without incident, and now will need diagnostics to check on the target ladder to ensure all is operational.

 The T1/T2 water packages were drained into the B1AAWHT (280L), the water was sampled and tested by RPG, results included in elog.

Once given the all clear myself and Maico released the water from the B1AAWHT (300L). 

It was discovered that the solenoid valve SV1 which is located in the RH lab beside the sump, is broken and will need replacing, picture included in elog.

Having the solenoid broken caused the draining to go slower then normal.

Today myself and Adam Newsome started the leak detection steps for a target exchange and notice that the Helium line was not connected/broken from inside the hotcell.

A new line will need to be installed and the line attached to the helium wand.

This will need to be done when the target has been removed.

We will be installing a temporary line so that we can complete the target exchange first.

The temporary line will be put through the tool port as this seems the most practical and least likely to interfere with operations.

After will will have to schedule some time to install a permanent helium line with some newer flexible tubing. 

Also notice at the operator side that there is a small oil leak that appears to be coming from the hotcell window oil.

We have added an indicator(tape with pen marking) to the oil level to see how much we are loosing.

We will have to check the torques of the window bolts to ensure they are adequate.

If there is still an issue we may have to look at replacing the window seal.

Also Chad Fisher was consulted about the possible solutions 

The T2-MK2 target was transported from the east hot cell to the storage pit at position 3.

As was noted in the past, position 3 is difficult to align. The flask alignment pins prevent the flask from positioning in the correct location, and it is required to have the flask just above the pins to ensure that the pins did not restrict the flask movement.

It is recommended to install a camera system to assist with the target placement and retrieval, which will help reduce the amount of dose one receives during this operation.

The T2 heat exchanger secondary side solenoid failed on July 9 at approximately 19:30 (EPICS ID: B1A:T2CS:SVSEC).  The valve was replaced with a spare and the cooling package is now running normally.

The valve at this location also failed in November 2016:  https://elog.triumf.ca/TIS/RH-Meson+Hall/211  Further investigation will be attempted to determine if there is a root cause to the failure, or if it is a coincidence.

The attached OneNote PDF contains details of the work.  Cyclotron Fault #10119 has been returned.

test 2

On 23rd October we restarted the T1 and T2 water packages after the mini shutdown and after the site power outage. The rotary collimator was reporting no water flow and it was assumed the valve coil (B1A:T1:SVCOL) had failed again. T1 water package was uncovered the next day (24th) and we went to change the coil. Water flow was returned to the collimator and T1 water package was re-covered.

During the replacement, one of the nearby pressure sensor wires accidentally made contact with a nearby paddle wheel sensor shorting out the output connectors and making the flow read between 8 to 1999 GPM. The offending wire was observed and removed after going back down to have a closer look.

It is not believed the coil failed from the site power outage on the 19th. The water packages had been left off since the beginning of the mini shutdown (2nd of October?).

Randomly checked on the nuclear ventilation for the Meson Hall Hotcells and discovered they were not running again (both magnahelic gauges displayed zero). Attempted to restart the fan manually and the control box seems to not be working. Matt McClean has been contacted and they will look into the problem.

The nuclear ventilation is currently not running in the RHMH hot cells.