 Tuesday, May 12, 2015, 21:20, Grant Minor, Standard Operation, Target 1, Target, T1 & T2 Targets moved from pos. 0 to pos. 4
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Grant moved the T1 and T2 targets from position 0 to position 4 this evening at around 9pm.
The position 4 selector button on the T1 rack was not working. The manual control box had to be used with the adapter cable and military
connectors for both T1 and T2 to achieve position 4 on both targets. |
Thursday, December 17, 2015, 13:31, Grant Minor, Development, Other, Target, T1/T2 Target Cassette - window / end cap manufacturing change (WO 41527) 
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Isaac Earle has recently been managing the fabrication of some new Be target cassettes for the T1 / T2 Meson Hall target ladders (WO 41527).
The machine shop has outsourced the cassette tubes to an external shop for wire EDM cutting, as it produces a much more repeatable and consistent |
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Tuesday, October 17, 2023, 10:16, Eric Lahe, Maintenance, Other, Active Sump, Testing the Remote Handling Lab Active Sump Level Sensor
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The level sensor for the active sump in the RH lab was tested.
The level sensor is working properly and is operational.
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Wednesday, February 01, 2023, 14:23, Albert Kong, Maintenance, Target 1, Cooling, T1 Cooling Package: flow test after resin exchange / valve leak check / faulty(?) dial pressure gauge
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Maico/Eric/Albert:
The expansion tank in T1 was filled to ~36cm in the morning.
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Thursday, February 02, 2023, 10:35, Albert Kong, Maintenance, Target 1, Cooling, T1 Cooling Package Draining (Prep for Valve Replacement)
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Water reservoir in T1 started draining at ~7.30 am, will leave till tomorrow or overnight to fully drain.
(Preparation to replace all leaky valves).
Drained water samples collected for RPG. |
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Thursday, February 02, 2023, 15:14, Albert Kong, Maintenance, Target 1, Cooling, T1 Cooling Package: Leaked Valve Inspection
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A 0.75" SwageLok ball valve that was taken out from the T1 cooling package was inspected (SS-45S12).
All valves in the T1/T2 cooling packages likely leaked due to damage to plastic/rubber sealing components.
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Friday, February 17, 2023, 14:36, Albert Kong, Repair, Other, Water Leak, T1/T2 Water Cooling Package Ball Valve Replacement
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5 and 3 Swagelok ball valves were replaced from the T1 and T2 cooling packages respectively.
These are compression fit valves, 1/2" or 3/4" size.
1 valve in T2 was replaced previously, bringing the total # of replaced valves in T2 to 4. |
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Tuesday, February 21, 2023, 16:56, Albert Kong, Maintenance, Target 2, Other, M20 BB moved to meson hall hot cell roof
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The M20 beam blocker was moved from the T2 monolith to the meson hall hot cell with the remote handling flask (completed ~4pm).
This operation was performed in preparation for M20 maintenance (main shaft o-ring replacement + air cylinder re-lubrication).
RPG surveyors measured 20,000 CPM from swiping the surface of the beam blocker shaft, and measured 25 mSv/hr on contact with the beam blocker. |
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Wednesday, March 01, 2023, 13:10, Albert Kong, Maintenance, Other, Cooling, T1/T2 Water Cooling Package Heat Exchanger Ball Valve Replacement
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3x 3/4" swagelok ball valves (2x at T2 and 1x at T1) were replaced after the water cooling line was shut off at the BL1A tunnels late yesterday.
We were able to relieve pressure from the T2 water cooler + M8 colA/B (they are the same line) at the BL1A tunnel through a drain port but no such
port exists for the T1 heat exchanger line in BL1A. |
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Friday, March 03, 2023, 16:00, Albert Kong, Maintenance, Target 2, Other, M20 Return to T2 Monolith + Vaccum Leak / T1-T2 Valve Re-inspection
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We moved M20 back to the T2 monolith and re did the connections for air + limit switches + T2 profile monitor air.
Note: T2 profile monitor electronics sparked when we moved M20 out initially. (Update: Shengli Liu from probes group performed a test on the T2 |
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Monday, March 06, 2023, 16:58, Albert Kong, Repair, Target 2, Cooling, M20 O-Ring Replacement and Valve Replacement Leak Check
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We replaced tha O-ring on M20 at T2 and brought the target station down to vacuum, which allowed the target water pump to be turned on.
After turning the pump on, we inspected the replaced valves for any leaks and found none - the flow on the demineralizing line was adjusted to
1.2GPM (also done at T1) by turning the needle valve. |
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Wednesday, March 15, 2023, 15:56, Albert Kong, Maintenance, Target 2, Controls, T2 - M9 and M20 beam blocker actuation and vacuum test 6x
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We tested the actuation of the M9/M20 beam blockers on the T2 monolith (3-4pm).
Vacuum levels remained steady throughout so the M20 o-ring replacement that was performed this shutdown was successful (see strip of 1ACG4 - vacuum
gauge for T2 systems interlock). |
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Thursday, March 30, 2023, 13:17, Albert Kong, Maintenance, Other, Target, Air Amplifier Testing: M9 BB (AKA T2 blocker), M20 BB, T2 MK1 prof. monitor, T1 MK1 prof. monitor actuation
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We tested the air amplifiers by actuating the beam blockers and profile monitors on the T1 and T2 target stations.
The blockers and profile monitors were each actuated (brought up/out and down/in fully) > 5 times and vacuum remained stable throughout (see
attached). |
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Thursday, April 06, 2023, 13:35, Albert Kong, Maintenance, Target 1, Controls, T1 Motor Controller Hearbeat Trip (+T2 Heartbeat Trip)
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The T1 motor controller hearbeat tripped (noticed this morning).
This does not seem prevent beam delivery or target ladder actuation (see screenshot, target still ready for beam).
An improperly functioning hearbeat led on a controller may indicate that the controller is beginning to fail. |
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Tuesday, June 06, 2023, 15:42, Albert Kong, Standard Operation, Target 1, Cooling, T1 Heat Exchanger Low Flow Diagnostics
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On May 31, the low active water in BL1A was turned off briefly and upon re-starting, the flow to the T1 heat exchanger was very close to the reported
warn limit (~6 gpm).
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Thursday, August 03, 2023, 10:33, Albert Kong, Repair, Target 2, Cooling, T2 Expansion Tank Water Level Low (Leak Identified) 7x
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The water level in the T2 cooling system expansion tank dropped to below the trip treshold of 20 cm (ref Cyclotron fault #16123), requiring the beam
to be 'defined' off (see attached image).
Some calculations (see attached .html) show that over the period in which the tank level was dropping (from July 12 - Aug03, 2023) approximatley |
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Tuesday, October 17, 2023, 14:25, Albert Kong, Maintenance, Other, Other, T1/T2 Air Amplifier Spool O-Ring Servicing
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Today we re-lubricated the o-rings on the top air amplifier for T1/T2, and replaced the o-rings on the bottom air amplifier with new and also lubricated
o-rings.
We used Haskel lubricant #50866. |
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Monday, December 04, 2023, 09:22, Albert Kong, Standard Operation, Target 2, Cooling, T2 TGT Low Flow
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See Cyclotron fault 16553.
"B1A:T2CS:FGTGT readback is toggling at the warn limit of 3.0 GPM and over the last week has started crossing over the trip threshold of 2.8
GPM, tripping off the water package. Initial Action Taken: 1A is scheduled to take beam on December 13." |
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Wednesday, January 10, 2024, 12:25, Albert Kong, Standard Operation, Other, Cooling, T1/T2 cooling packages drained
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Jan 10, 2024:
The cooling packages for T1/T2 was drained this morning. ~150 L from each of the cooling package reservoirs + expansion tank was drained to the
BL1A holding tank. The holding tank held ~400 L initially and is therefore now filled to ~700 L (out of a 800 L capacity). We will likely drain the holding |
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Wednesday, January 10, 2024, 12:47, Albert Kong, Standard Operation, Target 1, Target, T1 target ladder exchange (T1-MK1 to hot cell roof, T1-MK2 from pit to station)
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T1-MK1 was moved from the target station to the hot cell roof.
Radiation surveys report 140 mSv/hr at 0.5m for the bare T1-MK1 target ladder.
On the hot cell roof, fields are 220uSv/h at 0.5m. |
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