 Friday, March 11, 2022, 15:09, Adam Newsome, Maintenance, Target 2, Cooling, Filters replaced: T2 cooling system
|
| All filters were replaced for the T2 cooling system: demineralizing resin circuit and target water system. |
|
Monday, March 14, 2022, 14:08, Adam Newsome, Maintenance, Target 1, Cooling, T1 cooling system: filled, tuned, leak-checked
|
The T1 cooling system was refilled with water via the expansion tank until the tank level read approximately 38 cm.
The system pump was restarted. All sensors displayed acceptable nominal values. Demin flow was tuned to 1.0 gpm.
No leaks or abnormalities observed - system running normally. |
|
Monday, March 14, 2022, 14:09, Adam Newsome, Maintenance, Target 2, Cooling, T2 cooling system: filled, tuned, leak-checked
|
The T2 cooling system was refilled with water via the expansion tank until the tank level read approximately 38 cm.
The system pump was restarted. All sensors displayed acceptable nominal values. Demin flow was tuned to 1.0 gpm.
No leaks or abnormalities observed - system running normally. |
Thursday, May 05, 2022, 14:38, Adam Newsome, Maintenance, Target 2, Controls, T2-MK1: profile monitor actuation check and repair to connector 
|
An attempt was made to actuation the T2 profile monitor, however it showed up in EPICS as being not present. Furthermore, the "Remote"
indicator light on the physical controller was not lit up despite the switch being in remote mode. The limit switch indicator light was working.
|
|
Tuesday, August 30, 2022, 14:24, Adam Newsome, Maintenance, Other, Hot Cell, Nuclear Ventilation - Filter Change
|
Mechanical Services Group changed the pre-filter in the ventilation system on Aug. 29, 2022 as per work permit C2022-08-29-2.
It is recommended that Mechanical Services change the HEPA filter as soon as possible. These filters are on order with approximately 7 month lead |
|
Tuesday, October 04, 2022, 09:59, Adam Newsome, Maintenance, Target 2, Cooling, T2 cooling package maintenance - mini-shutdown 2022
|
The following maintenance tasks were performed during mini-shutdown of 2022 with the goal of resolving the Fault 14966 (target water flow rate low).
Replace the o-ring, paddle wheel, and shaft on the following flow rate sensors:
Q1 (FGTGT)
Q2
Q4
Replace the demineralizing flow metering valve with a new needle valve (the old one was flaky and appeared |
|
Tuesday, October 11, 2022, 11:27, Adam Newsome, Maintenance, Target 1, Cooling, T1 inlet pressure transducer replacement
|
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 |
|
Thursday, January 12, 2023, 10:36, Adam Newsome, Maintenance, Target 1, Water Leak, T1 and T2 - Cooling Package Water Leaks - Ball Valves
|
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 |
|
Monday, January 16, 2023, 15:01, Adam Newsome, Maintenance, Target 1, Cooling, T1 Cooling Package MRO - 2023 Shutdown
|
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): |
|
Monday, January 16, 2023, 15:04, Adam Newsome, Maintenance, Target 2, Cooling, T2 Cooling Package MRO - 2023 Shutdown
|
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): |
|
Tuesday, January 17, 2023, 13:46, Adam Newsome, Maintenance, Other, Active Sump, Filter Change: RH Active Sump and BL1A Holding Tank Drain Output
|
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 |
|
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
|
Maico/Eric/Albert:
The expansion tank in T1 was filled to ~36cm in the morning.
|
|
Thursday, February 02, 2023, 10:35, Albert Kong, Maintenance, Target 1, Cooling, T1 Cooling Package Draining (Prep for Valve Replacement)
|
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. |
|
Thursday, February 02, 2023, 15:14, Albert Kong, Maintenance, Target 1, Cooling, T1 Cooling Package: Leaked Valve Inspection
|
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.
|
|
Tuesday, February 21, 2023, 16:56, Albert Kong, Maintenance, Target 2, Other, M20 BB moved to meson hall hot cell roof
|
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. |
|
Wednesday, March 01, 2023, 13:10, Albert Kong, Maintenance, Other, Cooling, T1/T2 Water Cooling Package Heat Exchanger Ball Valve Replacement
|
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. |
|
Thursday, March 02, 2023, 06:59, maicodallavalle, Maintenance, Target 1, Cooling, Refilled Expasion Tank
|
| 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. |
|
Thursday, March 02, 2023, 07:04, maicodallavalle, Maintenance, Target 2, Cooling, Refilled Expasion Tank
|
| 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. |
|
Friday, March 03, 2023, 16:00, Albert Kong, Maintenance, Target 2, Other, M20 Return to T2 Monolith + Vaccum Leak / T1-T2 Valve Re-inspection
|
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 |
|
Wednesday, March 15, 2023, 15:56, Albert Kong, Maintenance, Target 2, Controls, T2 - M9 and M20 beam blocker actuation and vacuum test 6x
|
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). |
|