 Friday, October 09, 2015, 15:18, Isaac Earle, Repair, Target 2, Target, T2-MK2 Check at Hot Cell and Motor Drive Cable Replacement 7x
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While the T2 monolith was uncovered for T2 Protect repair (see previous e-log), it was decided that the T2 target should be moved to the hot cell to
address issues discovered last week with target ladder movement (see e-log #175)
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Friday, October 09, 2015, 15:52, Isaac Earle, Repair, Target 1, Target, T1-MK2 Protect Monitor Replacement and Inspection 12x
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When the damage to the T2 Protect Monitor was found to be caused by flying debris from a vacuum spike (see e-log #179), it was decided that the T1 Protect
Monitor should also be replaced.
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Thursday, November 05, 2015, 17:07, Isaac Earle, Repair, Target 2, Target, T2-MK1 Profile Monitor Repair and Pos'n 3 Target Removal 8x
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The following work was performed on the T2-MK1 target. The profile monitor and monitor cage on this target were damaged in January 2013, See E-Log
#68
Oct 23: |
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Wednesday, February 24, 2016, 13:03, Isaac Earle, Repair, Other, Other, Target Flask 2-Ton Hoist Chain Twist Corrected
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A 1/2 turn twist in the target flask hoist chain has been corrected to address a deficiency observed by inspectors by Gordon Crane. This
was accomplished by first holding the flask door yoke at the top position using rope slings, then lowering the hook block spider approximately 6",
then lifting the stationary end of the hoist chain approximately 2" using the Meson Hall main crane to make the top of the chain slack. |
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Friday, September 30, 2016, 16:54, Isaac Earle, Repair, Target 1, Target, T1-MK2 - New Beryllium Targets Installed
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The following work was performed on the T1-MK2 target assembly during the September 2016 Mini-shutdown:
Monday Sept 26: |
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Friday, September 30, 2016, 16:59, Isaac Earle, Repair, Target 1, Cooling, T1 Cooling System Inlet Pressure Transducer Replaced
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The T1 cooling system inlet pressure transducer (EPICS ID: B1A:T1CS:PGIN, Omega part # PX315-100GI) began failing in August (exhibited gradual
decline in pressure with no corresponding change to flow rate or outlet pressure). A new transducer was installed on Sept 30 2016 which fixed the
problem. Cyclotron Fault Report #9238 was returned and the temporary bypass on the warning level was removed. |
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Thursday, November 17, 2016, 17:58, Isaac Earle, Repair, Target 2, Cooling, T2 Heat Exchanger Secondary Side Solenoid Valve Failure
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At approximately 11am today the T2 cooling package heat exchanger secondary side water flow suddenly dropped from ~11gpm to 0. This was confirmed
to be a real reading by observing that with no secondary cooling both the inlet and outlet target water temperatures rose steadily with beam on the target.
While standing on the blocks in the T2 area and having a controls expert (wither "superuser" access mode) actuate the secondary side solenoid |
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Monday, March 27, 2017, 16:15, Isaac Earle, Repair, Target 1, Cooling, T1 Cooling System Target Water Return Hose Damaged
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The 18' shielding block which lies west of the T1 cooling package was removed on Friday Mar 24 so that vacuum equipment could be craned into the 1A tunnel.
During replacement, the flexible SS hose for T1 target return water got caught under the block and was ripped apart. Workers in the area did
not realize this had occurred. The cooling package tripped off when the hose ripped (likely due to low water flow or low supply pressure). In |
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Tuesday, May 09, 2017, 16:35, Isaac Earle, Repair, Target 2, Cooling, T2 target water flow gauge paddle wheel changed
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During the target move on Thursday May 4th the paddle wheel and paddle wheel shaft for the T2CS:FGTGT sensor were changed to address transient
spikes of approximately +/-1.0 gpm which were causing nuisance trips. There have been no transient spikes recorded since the change, and the nominal
flow value dropped from 4.9gpm to 3.6gpm. Fault report #9836 has been returned, and the warning and trip levels, which were set higher to avoid nuisance |
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Monday, July 10, 2017, 16:20, Keith C Ng, Repair, Target 2, Target, T2 Heat Exchanger Secondary Side Solenoid Valve Failure
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The T2 heat exchanger secondary side solenoid failed on July 9 at approximately 19:30 (EPICS ID: B1A:T2CS:SVSEC). The valve was replaced with a
spare and the cooling package is now running normally.
The valve at this location also failed in November 2016: https://elog.triumf.ca/TIS/RH-Meson+Hall/211 |
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Tuesday, July 25, 2017, 19:23, Isaac Earle, Repair, Target 2, Cooling, T2 Heat Exchanger Secondary Side Solenoid Valve Failure (again)
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At approximately 13:50 today the T2 cooling system secondary side solenoid valve (T2CS:SVSEC) failed to a closed position. This was the same
location where the valve failed on July 10th (E-Log #224), and also in Nov 2016 (E-Log #211). This repeated failure does not seem like a coincidence,
so instead of replacing the valve with a new unit, it was bypassed temporarily until we can determine the cause of the failures. A 3/4" FNPT |
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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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Thursday, May 10, 2018, 15:23, Isaac Earle, Repair, Target 1, Target, T1-MK2 protect monitor and profile monitor replaced
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During first injection of beam down 1A problems were encountered with the T1 protect monitor. Testing was done by Probes Group from the mezzanine
leading to the following investigation and repair work.
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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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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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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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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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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, 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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Friday, January 25, 2019, 10:53, maicodallavalle, Repair, Other, Cyclotron electrical, Cyclotron Elevating system Motor electrical wire repairs
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2018 Cyclotron lid up problem. Station #9 was found to have the motor wires along the beam plain had damaged wire insulation. There were
bare wires in the conduit resulting in the wires shorting out. The wires were repaired with a quick short replacement. Lid went up for in tank work. After
lid down the problem was investigated. We checked the radiation levels at all of the stations to come up with a plan to determine witch of |
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