 Tuesday, July 18, 2023, 09:14, Adam Newsome, Other, Target 1, Cooling, T1 Cooling Package: target flow (FGTGT) sensor noise issues 
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Between 1:00 pm and 6:00 pm on July 17, 2023, the T1 target cooling water flow rate sensor exhibited some noise which resulted in it dropping below the
warning/trip limit. The control room requested that the threshold values be lowered - permission was granted. The thresholds were set to 2.3 gpm for both
warn and trip levels. See attached screenshot from EPICS sensor data. The occasional spikes and dips continued throughout the night fairly consistently. |
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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, 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, April 03, 2014, 16:35, Isaac Earle, Standard Operation, Target 1, Cooling, T1 Cooling Package Started
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The T1 cooling package was started around 2pm today. There was no change to the T1 volume vacuum during startup.
The package was inspected for water leaks: None found.
The demin loop flow (Q2) was adjusted to ~1.5gpm. |
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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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Friday, August 23, 2013, 10:39, Isaac Earle, Repair, Target 1, Cooling, T1 Cooling Package Inlet Pressure (P1) Sensor
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The T1 cooling package inlet pressure (P1) has been dropping since approximately May 5, 2013 from the regular operating pressure of approximately
75psi to the present value of 47psi. An increase in the rate of decrease started around August 5th as well as increased noise in the signal. Plots
attached below. No corresponding change in the outlet pressure, and no change in the water flow rate (also no change in inlet and oulet temperatures) |
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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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Tuesday, January 27, 2015, 17:38, Isaac Earle, Repair, Target 1, Cooling, T1 Cooling Package 3/4" Valves Rebuilt - T1 MRO Complete
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- Both 3/4" ball valves on the T1 cooling package target water circuit were rebuilt, leak tested with house air pressure, and reinstalled
- The 3/4" ball valve on the T1 heat exchanger secondary side was replaced with a new unit
- The 3/4" needle valve on the T1 heat exchanger secondary side was rebuilt, leak tested with house air pressure, and reinstalled |
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Tuesday, March 20, 2012, 10:31, Isaac Earle, Repair, Target 1, Cooling, T1 Cooling Package - Potential Water Leak
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The T1 expansion tank warning level sensor had tripped and the level was approximately 1cm from the base of the tank. No trip warning was observed
when Tom Lyth checked the panels last week. The T1 cooling package and target monolith were inspected and no water was observed. Two puddles
of water were found in the BL1A tunnel around the T1 package area: one directly below the 1AQ9 Cable Interlock Tray, and another approximately 1.5m to |
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Friday, April 12, 2013, 17:33, Isaac Earle, Development, Target 1, Cooling, T1 & T2 high-temp limit switch installation, wiring, and commissioning complete
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Installation, wiring, and commissioning of the high temperature limit switches for the T1 and T2 cooling packages was completed today as part of SAS
project SASP0120. The relay output from the switches was wired in series with the Central Safety System signals for T1 and T2 (cable number 13250
and 12250 respectively) in break-out panel #2 on the Meson Hall south mezzanine. There were already 3 other circuits wired in series with each signal |
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Wednesday, February 05, 2020, 14:53, Isaac Earle, Maintenance, Target 1, Cooling, T1 & T2 cooling package MRO work completed
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Annual MRO work on the T1 and T2 cooling packages is now complete. The following tasks were performed:
Water from both packages drained to the South TNF holding tank (samples taken)
All Proteus paddle wheels, shafts, and
o-rings replaced (5 each at T1 and T2)
All Cuno filters changed
Archived data for all sensor readbacks inspected. Only |
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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. |
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Tuesday, June 26, 2012, 09:05, Isaac Earle, Maintenance, Target 1, Cooling, T1 & T2 Target Water Flow Transducers Serviced
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The target water outlet flow transducers on the T1 and T2 cooling packages were serviced (new shaft, paddle wheel, & o-ring) to address a noisy
signal. The service corrected the noisy signal. Additionally, it appears the worn parts were causing the transducers to read high, as both
dropped approximately 1 gallon/minute after the service. Both transducers would occasionally trip the high flow warning (8.5gpm), and should now |
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Friday, February 20, 2015, 13:55, Isaac Earle, Standard Operation, Target 2, Target, T1 & T2 Target Moves
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- The T1-MK1 target was moved from the hot cell to storage pit hole #3 (ready as T1 spare)
- The T2-MK2 target was moved from the beam line to the hot cell for inspection and in preparation for T2/M9 work this shutdown
- The target measured up to 90mSv/hr at approximately 1m while being lifted |
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Tuesday, October 13, 2015, 10:52, Isaac Earle, Standard Operation, Target 1, Target, T1 & T2 Target Ladder Moves
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The T1 and T2 targets were both moved from Position 0 to Position 4 at approximately 2:30am on Saturday October 10th using the portable control
box. Operations had tried to move the T1 target to position 4 using the old control system but for unknown reasons it would move to any position
except position 4 and the portable control box had to be used. The portable control box should continue to be used for T1 and T2 target moves until |
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Wednesday, October 24, 2012, 17:38, Isaac Earle, Repair, Target 2, Target, T1 & T2 Target Ladder Control System Status
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During the recent shutdown for the T2/M9 joint repair Graham Waters replaced the corrupted application code on the controller RAM disk. The
T1 target position control is now functioning properly. T2 target position control is still not operational due to an electronics problem within
the motor driver. The T2 ladder position may still be moved using the portable control box. The T2 target ladder was moved to position 3 (10cm |
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Thursday, April 23, 2015, 16:29, Isaac Earle, Standard Operation, Target 1, Target, T1 & T2 Profile and Protect Monitors Electrical Check Completed
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An electrical check has been completed for the T1 & T2 Profile and Protect Monitors by Dave Cameron and Mike Russell. They report that all
results look normal. |
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Thursday, April 05, 2012, 15:22, Isaac Earle, Maintenance, Target 1, Target, T1 & T2 Profile and Protect "Blip" Test
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Diagnostics group completed their "blip" signal response tests on the T1 and T2 profile and protect monitors. A small amount of
leakage was observed on the T2 profile monitor, but was not thought to be a significant concern. All other results were normal. |
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Tuesday, May 14, 2013, 13:26, Isaac Earle, Development, Target 1, Target, T1 & T2 Profile Scan
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The T1 and T2 profile monitors were used during today's development shift. Target ladder movement for T1 was done at the panel on the mezzanine,
for T2 the portable control box was used. Both monitors actuated properly and the scans did not show any "missing" wires. The profiles
at both targets were found to be too broad and were adjusted to span 2 wires horizontally and 6-7 wires vertically (Yi-Nong Rao). |
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Thursday, April 05, 2012, 12:14, Isaac Earle, Repair, Target 1, Target, T1 & T2 Profile Monitors
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Controls Group replaced the wiring and wire harness for the profile monitor limit switches on T2. The monitor was actuated remotely and functioned
properly.
The T1 profile monitor was also tested and actuated properly. The T1 monolith is now ready to be covered so that blocks may be removed from |
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