 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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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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Thursday, March 02, 2023, 07:04, maicodallavalle, Maintenance, Target 2, Cooling, Refilled Expasion Tank
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| 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. |
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Thursday, March 02, 2023, 06:59, maicodallavalle, Maintenance, Target 1, Cooling, Refilled Expasion Tank
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| 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. |
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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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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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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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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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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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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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Tuesday, January 17, 2023, 13:49, Adam Newsome, Repair, Other, Active Sump, Active Sump - Valve V6 Leaking
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It was noticed today (2023-01-17) that the valve V6, used in draining the BL1A Holding Tank to the Active Sump, was leaky. This valve should be replaced
as soon as possible. It has been added to the MS
Planner maintenance tasks list. |
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Tuesday, January 17, 2023, 13:46, Adam Newsome, Maintenance, Other, Active Sump, Filter Change: RH Active Sump and BL1A Holding Tank Drain Output
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The CUNO filters were changed 2023-01-17 for:
BL1A Holding Tank drain output, adjacent to the pump
RH Active Sump, adjacent to the V2 valve
Both of
these filters are in-line with the drainage lines from the BL1A holding tank to the active sump. It was suspected that they have not been changed in many |
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Monday, January 16, 2023, 15:06, Adam Newsome, Repair, Other, Active Sump, RH Active Sump - draining flow rate sensor repair
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The flow rate sensor used to monitor the drain rate from BL1A holding tank to active sump, located in the active sump area, was repaired. The paddle
wheel, o-ring, and shaft were replaced. This part was significantly worn prior to replacement.
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Monday, January 16, 2023, 15:04, Adam Newsome, Maintenance, Target 2, Cooling, T2 Cooling Package MRO - 2023 Shutdown
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T2 Cooling Package MRO began Jan. 16, 2023.
The following maintenance tasks have been completed for T2 (this list will be updated as work progresses): |
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Monday, January 16, 2023, 15:01, Adam Newsome, Maintenance, Target 1, Cooling, T1 Cooling Package MRO - 2023 Shutdown
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T1 Cooling Package MRO began Jan. 16, 2023.
The following maintenance tasks have been completed for T1 (this list will be updated as work progresses): |
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Monday, January 16, 2023, 09:54, Adam Newsome, Standard Operation, Other, Cooling, T1 and T2 - Cooling Package Drained
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On Jan. 13, the T1 and T2 cooling package water reservoirs were drained to the BL1A holding tank. Water samples were obtained for each system and provided
to RPG for analysis.
Prior to starting draining, the BL1A holding tank water level was approximately 330L. After draining, the water level was approximately 550L (checked |
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Thursday, January 12, 2023, 10:36, Adam Newsome, Maintenance, Target 1, Water Leak, T1 and T2 - Cooling Package Water Leaks - Ball Valves
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Upon uncovering the T1 and T2 areas to prepare for regular cooling package maintenance, it was discovered that multiple ball valves were leaking. Primarily
the Swagelok SS-45S12 parts, but some SS-45S8 parts have failed as well. There were small puddles of water underneath many of the valves. It appears that
the leak is due to a compromised seal. It is suspected that these parts failed from radiation exposure. They have PTFE packing material which is highly |
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Wednesday, January 11, 2023, 15:22, Adam Newsome, Repair, Target 2, Target, T2 Target Ladder Motor - Coupling Failure
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It was reported on Dec. 20, 2022 that when Operations attempted to run the target ladder motor, it was unresponsive. A fault report was created: 15477.
During winter shutdown 2023, the T2 area was uncovered and the motor was inspected on 2023-01-11 by Adam Newsome and Maico Dalla Valle. The connectors
and cabling appeared OK. |
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Tuesday, January 03, 2023, 07:42, Adam Newsome, Other, Other, Active Sump, Active Sump - Level Check
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| The sump level was checked by Robin Swanson on Dec. 31, 2022. It was essentially empty - see attached photo. |
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Tuesday, October 11, 2022, 11:27, Adam Newsome, Maintenance, Target 1, Cooling, T1 inlet pressure transducer replacement
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A fault was reported June 21, 2022 (Fault
15033) regarding T1 inlet pressure warnings... the pressure reading slowly dropped over time as seen in the attached strip tool screenshot (B1A:T1CS:PGIN).
The pressure reading issue is attributed to a fault pressure transducer. The transducer was replaced on Oct. 11, 2022 my M. Dalla Valle. It is currently |
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