 Friday, June 01, 2018, 17:50, Isaac Earle, Repair, Target 1, Cooling, T1 collimator solenoid valve coil replaced
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Flow stopped through the T1 collimator cooling loop around the same time as a power bump this afternoon. The problem was narrowed down to failed
solenoid valve B1A:T1:SVCOL by comparing coil resistance to other units without issue (~1.0ohm vs 3.6ohm for working units), measured at the T1/T2 PLC
cabinet. Shielding above the T1 package was removed and the solenoid coil was replaced with a new unit. After replacement the valve works as |
Monday, June 24, 2019, 14:29, Isaac Earle, Development, Target 1, Target, T1 and T2 target alignment frames overhauled 8x
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The following work was completed on both the T1 and T2 target alignment frames
One of the short taper pins on the top of the frame was swapped for a longer version to simplify flask alignment to the frame (now one
pin can be aligned at a time instead of both concurrently)
Three permanently mounted cameras installed to view east/west alignment, north/south |
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Thursday, January 10, 2019, 13:51, Isaac Earle, Maintenance, Target 1, Cooling, T1 and T2 cooling packages inspected
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The T1 and T2 cooling packages were inspected today while running. No water leaks were observed at either package including the high-active loops
and copper active.
The T1 pump was fairly noisy (video was taken to record the sound). This is the new pump installed in August 2018 (see E-Log #242). |
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Tuesday, April 10, 2018, 11:20, Isaac Earle, Maintenance, Other, Cooling, T1 and T2 cooling package shutdown MRO work
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The following work was performed on the T1 and T2 cooling packages during the 2018 shutdown:
- T1 and T2 cooling packages both sampled and drained to South TNF holding tank
- Water released after testing and approval from RPG |
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Tuesday, June 04, 2013, 13:42, Isaac Earle, Repair, Target 1, Target, T1 and T2 Power Supply Fans Replaced
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Replacement of the power supply fans for the T1 Power Supply, T2 Power Supply, as well as an additional power supply in rack 1A was completed this
morning. The boxes were blown out with air to remove dirt and dust. The inside of all boxes were inspected and no evidence of melting or burning
was found. |
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Tuesday, February 26, 2019, 10:55, Isaac Earle, Maintenance, Target 1, Cooling, T1 and T2 MRO work and solenoid valve change summary
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The following work was completed between Jan 16 - Feb 19, 2019:
T1 and T2 cooling packages drained to South TNF holding tank, water sampled and tested, released after approval from RPG
T1
resin can swapped
All Cuno filters changed at T1 (3 total)
T1 inlet (T1CSPGIN) and outlet (T1CSPGOUT) pressure gauges replaced |
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Wednesday, April 22, 2015, 15:15, Isaac Earle, Standard Operation, Target 1, Cooling, T1 and T2 Cooling Packages Ready
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Both cooling packages are running steadily with the targets in Position 0.
The demin flow (Q2) for both was tuned to approximately 1.5USgpm.
A defeat was applied to T2Q1 flow to prevent high level nuisance trips. This will remain in effect for the 2015 running period. |
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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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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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Wednesday, July 11, 2012, 17:51, Isaac Earle, Repair, Target 1, Target, T1 Target Swap
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BL1A was started yesterday and brought up to 10μA. A problem was noticed with the T1 protect monitor (the right and bottom plates were not showing any response when the beam was swept
across the monitor). The protect monitor is new and was installed on the target assembly in February 2012, so this is the first time it has seen |
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Friday, March 23, 2012, 14:50, Isaac Earle, Repair, Target 1, Target, T1 Target Leak - Update
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The T1-MK2 target was transferred from the beam line to the hot cell. Water was seen in the bottom of the target pipe confirming that the leak
is from the target. The lower cone of the target assembly was submerged in the water and came up dripping wet. The profile monitor, protect
monitor, and two of the target cassettes were also wet. As it is not possible for those to be submerged, water was likely spraying from either the |
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Tuesday, April 09, 2013, 17:06, Isaac Earle, Repair, Target 1, Target, T1 Target Electronics Check
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The T1-MK1 target protect and profile monitor electronics were 'blip' tested by Bill Rawnsley on April 5, 2013. The response from the profile monitor
appeared normal, however the protect monitor response was very weak. After various debugging it was found that the 9 pin connector on the target
on the vacuum side of the vacuum flange had become disconnected from the vacuum flange feed-through. It is suspected that this happened while changing |
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Thursday, January 23, 2025, 17:09, Albert Kong, Maintenance, Other, Cooling, T1 T2 water solenoid valves rubber gasket and o-ring exchange
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All rubber components on the T1 T2 water solenoid valves were exchanged on Jan 22, 2025.
To service the heat exchange water and all collimator solenoid valves, the low active copper supply line in the 1A tunnel had to be shut off (see
pictures). Note that the shut off for the T2 secondary water did not work perfectly, it is possible that there either the valve was not shut off properly |
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Monday, February 10, 2025, 16:46, Albert Kong, Maintenance, Other, Other, T1 T2 ASCO Air Solenoid Valve Rebuild
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The compressed air ASCO valves for the M9BB, M20BB, T1 Profile Monitor (2x 8342C1 [rebuild kit 306-191] + 1x 8320G216 [rebuild kit 314-949] respectively),
and T2 Profile Monitor (8320G216) were serviced with their rebuild kits.
To service these valves, we isolated them from the compressed air source by shutting off the outlet valves on the air amplifiers and venting the |
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Friday, February 27, 2015, 18:06, Isaac Earle, Development, Target 1, Target, T1 Rotary Collimator Water and Air Line Investigation
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Ron Kuramoto, Keith Ng, John McKinnon, and myself spent some time today investigating water and air lines related to the T1 Rotary Collimator (Col.
A). We discovered the following:
- There is a panel on the back (south) side of the T1 cooling package with 3 air lines for Col. A actuation, Col A cooling water supply & return, |
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Wednesday, March 21, 2012, 17:28, Isaac Earle, Repair, Target 1, Cooling, T1 Package Water Leak - Update
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The water level in the T1 cooling package expansion tank was checked again today approximately 24 hours after it was refilled. The level
had dropped about 5cm, equating to roughly 3.5L of water lost.
The T1 package was inspected thoroughly and no water was found. A leak on the target in the beamline is suspected. The T1 package has |
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Thursday, March 22, 2012, 13:58, Isaac Earle, Repair, Target 1, Cooling, T1 Package Water Leak - Update
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Vacuum group pumped down on the T1 & T2 volumes (because there is no cold trap on the T1 pump) for approximately 1 hour this morning. A
significant amount of water was found in the base of the cold trap which confirms our suspicions of a water leak on the T1 target.
Tomorrow we will transfer the T1 target from the beam line to the hot cell for inspection, leak checking, and repair. |
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Monday, September 09, 2013, 16:22, Isaac Earle, Repair, Target 1, Cooling, T1 P1 Transducer Replaced
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The BL1A tunnel was accessed today to assess a faulty reading from the T1 cooling package inlet pressure transducer (T1P1). The line was
first bled to remove gas bubbles which did not change the reading. The transducer was replaced with a new unit (OMEGA PX315-100GI). The pressure
reading returned to the usual value of approximately 74psi (faulty reading had been steadily decreasing over the last few months and was at approximately |
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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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Thursday, January 19, 2017, 08:55, Isaac Earle, Standard Operation, Target 1, Cooling, T1 MRO work complete
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The following work was completed on the T1 cooling package:
- water drained to BL1A holding tank
- all resevoir o-rings changed |
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