 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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Tuesday, October 04, 2022, 09:59, Adam Newsome, Maintenance, Target 2, Cooling, T2 cooling package maintenance - mini-shutdown 2022
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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 |
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Friday, September 23, 2022, 10:51, Matthew Gareau, Standard Operation, Target 2, Target, Target T2-MK2 moved to storage pit
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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. |
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Thursday, September 15, 2022, 14:34, Adam Newsome, Standard Operation, Target 2, Target, T2-MK2 target elevations measurement
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The target elevations measurement and beam spot checks were completed on Sept. 15, 2022. This was done after a July 2022 target exchange for target positions
3 and 5.
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Tuesday, August 30, 2022, 14:24, Adam Newsome, Maintenance, Other, Hot Cell, Nuclear Ventilation - Filter Change
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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 |
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Tuesday, August 23, 2022, 14:36, Adam Newsome, Standard Operation, Other, Other, BL1A Holding Tank - Level Check
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| The water level inside the BL1A active water holding tank was checked today (Aug. 23, 2022). The tank is essentially empty at this time. |
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Monday, August 22, 2022, 09:01, Adam Newsome, Standard Operation, Other, Active Sump, Active Sump Draining
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On Aug. 18, 2022, Operations informed RH group that an alarm activated for the full status of the MHESA B1 RCR1 Lab holding tank. Additionally another
alarm was reported in the RH control room regarding the RH sump full (Southwest Meson Hall Extension - Remote Handling area). However, there is an alarm
signal for the RH sump that was seen as OK at the MHESA Lab HMI. |
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