 Tuesday, April 11, 2017, 17:02, Isaac Earle, Maintenance, Target 2, Cooling, T2 Cooling System MRO
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The following work has been completed on the T2 cooling package:
- T2 system drained to South TNF holding tank (completed in Jan 2017, water already released)
- Target water and demin. circuit Cuno filters changed |
Tuesday, May 07, 2024, 13:21, Albert Kong, Repair, Target 2, Cooling, T2 Cooling System Expansion Tank Ultrasonic Level Sensor Repair 
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At ~8am on May 06, the expansion tank level sensor for the T2 cooling system suddenly became noisy.
Cyclotron fault ref: 16915
Approximately 11:00 am today, the noisy sensor was replaced with a spare, upon which it was learned that the spare sensor is broken (registers |
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Monday, January 21, 2013, 16:18, Isaac Earle, Standard Operation, Target 2, Target, T2 Cooling Package Water Released
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The T2 cooling package water was drained to the BL1A active sump, refilled, cycled, and drained again. Samples of T2 cooling package active water
was given to RPG, tested, and approved for release.
On January 21 at approximately 4pm the full volume of the sump (280L) was released to the city sewer. |
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Wednesday, September 11, 2013, 16:13, Isaac Earle, Repair, Target 2, Cooling, T2 Cooling Package Water Leak Repair
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The T2 cooling package was uncovered this morning and a leak was found coming from the Swagelok ball valve on the 3/4" target water outlet
line. The water was coming from the stem of the valve, indicating that water was leaking through the valve packing, rather than at the fittings for
the valve. The leak rate was approximately 1 drop every 5 seconds and a small puddle was visible on the top of the water reservoir. The water |
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Friday, January 23, 2015, 13:28, Isaac Earle, Repair, Target 2, Cooling, T2 Cooling Package Thermistor Defeats
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Both defeats applied to T2 cooling package thermistors were removed today (Col. B interlock was jumpered, and the target water inlet and outlet signals
had been swapped). It was confirmed that all thermistors are now wired correctly. The readback of both target water thermistors is currently
unstable. Inspection of the Lemo connectors showed that the internal plastic parts of all connectors were damaged or missing. If the T1/T2 |
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Thursday, April 03, 2014, 10:19, Isaac Earle, Standard Operation, Target 2, Cooling, T2 Cooling Package Resin Can Replaced
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The resin can was removed from the T2 cooling package and transported to the warm cell. A replacement can with fresh resin was then installed.
A 12' sling and the standard four bridle was used to prevent the crane hook block from hitting the mezzanine railing on the south side.
The T2 package was started and inspected for leaks - none found. |
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Wednesday, March 04, 2015, 18:08, Isaac Earle, Repair, Target 2, Cooling, T2 Cooling Package MRO Update
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The following work was done today at the T2 cooling package:
- Remainder of #4 Hansen o-rings replaced (see E-log from Jan 30, 2015)
- Installed the following ball valves which have been rebuilt & tested with 100psi air: target outlet 3/4" (x2), resin can outlet filter |
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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, March 24, 2014, 18:14, Isaac Earle, Standard Operation, Target 2, Cooling, T2 Cooling Package & Air Amplifier Started
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Bill Rawnsley completed an electrical check of the T2 profile monitor today from the Meson Hall mezzanine - All OK.
The T2 cooling package was refilled and started. There was no change to the T2 vacuum when starting the package. While running, the
package was visually inspected for water leaks - no leaks found. |
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Tuesday, October 27, 2020, 14:01, Isaac Earle, Repair, Target 2, Cooling, T2 Collimator flow meter paddle wheel replaced
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The T2 Collimator A flow meter signal (B1A:T2:FGCOLA) began fluctuating and occasionally reading 0gpm on Sunday Oct 25 causing BL1A trips and machine
down time.
On the maintenance day today (Tues Oct 27), the T2 package was uncovered and the T2 Col. A flow meter was opened. No unusual deposits were |
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Wednesday, March 15, 2023, 15:56, Albert Kong, Maintenance, Target 2, Controls, T2 - M9 and M20 beam blocker actuation and vacuum test 6x
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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). |
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Wednesday, March 16, 2022, 14:16, Matthew Gareau, Standard Operation, Other, Cooling, T1/T2 water packages drained to B1A AWHT, tested, and released. Also solenoid valve SV1 broken
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The T1/T2 water packages were drained into the B1AAWHT (280L), the water was sampled and tested by RPG, results included in elog.
Once given the all clear myself and Maico released the water from the B1AAWHT (300L).
It was discovered that the solenoid valve SV1 which is located in the RH lab beside the sump, is broken and will need replacing, picture included |
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Wednesday, January 10, 2024, 12:25, Albert Kong, Standard Operation, Other, Cooling, T1/T2 cooling packages drained
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Jan 10, 2024:
The cooling packages for T1/T2 was drained this morning. ~150 L from each of the cooling package reservoirs + expansion tank was drained to the
BL1A holding tank. The holding tank held ~400 L initially and is therefore now filled to ~700 L (out of a 800 L capacity). We will likely drain the holding |
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Friday, January 10, 2025, 18:36, Albert Kong, Standard Operation, Other, Cooling, T1/T2 cooling packages drained
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The T1 and T2 cooling packages were drained starting at 14:36, by 14:48 both expansion tanks had dried, meaning the draining rate for both tanks were
~80L/hr, generally it will only take 2 hours to fully drain the system.
Tritium samples were collected after allowing the system to drain for ~5 minutes to clear out water in the drain lines and actually collect samples |
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Thursday, March 30, 2017, 09:48, Isaac Earle, Development, Other, Controls, T1/T2 control system de-glitching & target ID changes
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The following changes were made to the T1/T2 PLC control system:
- De-glitching system investigated and Tony discovered that it was programmed incorrectly: the de-glitch time was observed only when a PV
changed from bad state to good, not the opposite (meaning there was actually no de-glitching in place since system start-up in 2016!). This was reversed |
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Wednesday, March 01, 2023, 13:10, Albert Kong, Maintenance, Other, Cooling, T1/T2 Water Cooling Package Heat Exchanger Ball Valve Replacement
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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. |
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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, December 17, 2015, 13:31, Grant Minor, Development, Other, Target, T1/T2 Target Cassette - window / end cap manufacturing change (WO 41527)
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Isaac Earle has recently been managing the fabrication of some new Be target cassettes for the T1 / T2 Meson Hall target ladders (WO 41527).
The machine shop has outsourced the cassette tubes to an external shop for wire EDM cutting, as it produces a much more repeatable and consistent |
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Friday, January 19, 2024, 17:07, Albert Kong, Standard Operation, Other, Target, T1/T2 Profile Monitor, TGT Ladder, CUNO filter leak, Motor Coupling Inspection, + M9/M20 Blocker Actuation 7x
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The following tasks were completed:
Yesterday (Jan 18), the T1/T2 cooling packages were inspected for leaks and some moisture was found underneath the CUNO filters behind
the resin cans on both T1/T2. It was determined that the source of the leak was a loose fitting on the drain valves of the CUNO filter housing (see photo). |
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Tuesday, August 30, 2016, 14:09, Isaac Earle, Development, Other, Controls, T1/T2 PLC Code Update
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A new version of the T1/T2 PLC code has been uploaded to the PLC CPU. The main change in the new version is a fix to a bug related to the
target MK# which may have caused the previous CPU crashes. The EPICS interface now needs to be updated so that no target information is displayed
on the EPICS screens when there is no target installed, or jumpers for both MK1 and MK2 are detected. This must be tested during the next maintenance |
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