 Wednesday, February 18, 2015, 14:49, Isaac Earle, Repair, Target 1, Target, T1-MK1 Repair Complete 
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This is a continuation of work detailed in E-Log #129 and #140.
- Static water test performed on the target cooling lines:
- Test setup assembled and leak checked by pressurising with house air, submerging in water and checking for bubbles (see photos) |
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Tuesday, March 26, 2013, 10:55, Isaac Earle, Maintenance, Target 1, Target, T1-MK1 Re-wiring and MRO Complete
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The following work was performed on the T1-MK1 target:
- Unused proximity sensor removed
- Lift flange removed, painted, relabeled |
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Monday, April 02, 2012, 15:18, Isaac Earle, Repair, Target 1, Target, T1-MK1 Installed in Beam Line
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The T1-MK1 target was transferred from the storage pit to the beam line. Services were hooked up and the cooling package was started (operating
normally).
Target ladder documentation and elevation values for the new target were delivered to operations. |
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Thursday, February 01, 2024, 11:14, Albert Kong, Standard Operation, Target 1, Hot Cell, T1-MK1 Flush and Purge on Hot Cell
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The recently removed T1-MK1 target ladder was flushed with city water for ~30s at all target positions. It was then purged with compressed air at ~5
psi for ~1 minute at all target positions. We then left the target ladder in pos5 to fully extend the bellows and allow it to dry overnight.
This ELOG will be updated as we progress with work done to dry the target ladder and eventually exchange the spent targets. |
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Wednesday, October 30, 2024, 15:10, Albert Kong, Standard Operation, Target 1, Target, T1-MK1 Electrical Check on Hot Cell 7x
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T1-MK1 electrical checks were completed on the hot cell. Specifically the profile and protect monitors were checked (assistance from Micheal Donohoe
and Holden Jones from 'probes group'/accelerator systems).
Reference WP C2024-10-30-3. |
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Thursday, May 11, 2023, 11:28, Adam Newsome, Repair, Target 1, Target, T1-MK1 - broken target ladder motor coupler repaired
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See Cyclotron Fault 15787. The target ladder motor failed to move to the commanded position during a test. The T1 area was uncovered and the motor assembly
was inspected by M. Dalla Valle, A. Newsome, and A. Kong. It was determined that the rubber coupler which connects the motor shaft to the drive assembly
had degraded and snapped. This is similar to an incident which recently occurred on T2. The coupler was replaced with an all-metal version. The system |
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Friday, April 19, 2013, 09:55, Isaac Earle, Development, Target 1, Cooling, T1&T2 cooling package safety/standards compliance upgrade complete (SASP0120)
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Yesterday (April 18th) the T1 and T2 cooling package PRV outlet lines were routed to the active drain in the 1A tunnel. All items for the safety
and standards compliance upgrade for T1 and T2 as specified in Document-68861 are
now complete. |
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Wednesday, January 10, 2024, 12:47, Albert Kong, Standard Operation, Target 1, Target, T1 target ladder exchange (T1-MK1 to hot cell roof, T1-MK2 from pit to station)
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T1-MK1 was moved from the target station to the hot cell roof.
Radiation surveys report 140 mSv/hr at 0.5m for the bare T1-MK1 target ladder.
On the hot cell roof, fields are 220uSv/h at 0.5m. |
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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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Monday, March 14, 2022, 14:08, Adam Newsome, Maintenance, Target 1, Cooling, T1 cooling system: filled, tuned, leak-checked
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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. |
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Thursday, September 06, 2018, 13:49, Isaac Earle, Repair, Target 1, Cooling, T1 cooling package secondary side solenoid failed
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On Friday Aug 31 at approximately 3am T1CS:FGSEC dropped to 0gpm flow. This was confirmed to be a real reading when T1CS temperatures continued
to rise steadily. Beam was turned off, and T1CS later turned off by operators (temps continued to rise due to heat from pump). The cooling
package was uncovered in the morning, and the T1CS:SVSEC solenoid was replaced by Doug Preddy and Keith Ng. This solved the problem and the package |
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Thursday, August 23, 2018, 11:52, Isaac Earle, Repair, Target 1, Cooling, T1 cooling package pump failure and replacement
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On Wednesday August 15th the T1 cooling package tripped off, and could not be restarted. On the EPICS screen the pump device went into an immediate
time-out each time we attempted to turn it on. An electrician was involved in the debugging, and issues were found with the 480V supply. The
breaker switch in the 480V supply panel was found to be damaged, and was replaced. The relay in the contactor box for the pump motor thermal protection |
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Tuesday, July 03, 2018, 11:09, Isaac Earle, Repair, Target 1, Cooling, T1 cooling package outlet water pressure sensor replaced
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The T1 cooling package outlet water pressure sensor (B1A:T1CS:PGOUT) was replaced this morning with a new unit. Over the last few months
the sensor readout had been steadily decreasing (from around 20psi to 4psi) with no corresponding decrease in inlet pressure, and no change in the circuit
flowrate (this is how these pressure sensors typically fail). |
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Thursday, October 25, 2018, 08:58, Keith C Ng, Repair, Other, Other, T1 collimator valve solenoid coil replaced again
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On 23rd October we restarted the T1 and T2 water packages after the mini shutdown and after the site power outage.
The rotary collimator was reporting no water flow and it was assumed the valve coil ( |
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Thursday, October 26, 2017, 16:12, Isaac Earle, Repair, Target 1, Cooling, T1 collimator solenoid valve replaced
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Around 10pm on Sunday Oct 22 beam was tripped multiple times due to low flow for the T1 collimator cooling circuit (B1A:T1:FGCOL). Temperature
of the collimator (TC7COL, TC8COL) was monitored with reduced beam current and no increase was observed leading to the conclusion that flow was OK and
the flow gauge was faulty. Normal operation continued until around 1:30am on Oct 26 when the collimator thermocouples both rose quickly, causing |
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Monday, July 23, 2018, 09:39, Isaac Earle, Repair, Target 1, Cooling, T1 collimator solenoid valve failed - Solenoid replaced
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On Saturday July 21st the T1 Collimator solenoid valve would not re-open after tripping closed due to a (planned) loss of vacuum. Shielding was
removed and the valve solenoid was replaced which fixed the problem. The original valve body was left in place.
This is the second time the solenoid at this location failed (See E-Log #239), and the latest of several failures of these new 24VDC solenoids |
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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 |
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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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