 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, April 13, 2018, 14:21, Isaac Earle, Maintenance, Other, Other, M20 beam blocker MRO and T1/T2 final checks
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The M20 beam blocker main shaft seals were replaced as per the T1/T2 target device maintenance schedule. Both air cylinders were found to be leaking
past the seals, and the blocker would not actuate in the hot cell even with 100psi (max site air) so they were also replaced. With the new cylinders
the blocker actuated smoothly at about 45psi. It is recommended that the air cylinders be replaced every second service (once per 10 years). |
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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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Friday, April 06, 2018, 15:05, Isaac Earle, Standard Operation, Target 2, Target, T2-MK2 target MRO
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The following is a summary of MRO work done on the T2-MK2 target during the 2018 shutdown:
Jan 8: |
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Wednesday, March 28, 2018, 10:12, Isaac Earle, Standard Operation, Other, Other, Five waste pails moved to East Vault Tunnel for storage
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Five 5 gallon metal pails with active waste were moved from the Warm Cell to the Cyclotron East Vault Tunnel today for long term storage.
The pails were labeled with radioactive item tags and storage item numbers (1442 through 1446). The pails contain used resin from T1, T2, and STF,
as well as one pail with active metal parts. |
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Thursday, March 22, 2018, 17:24, Isaac Earle, Standard Operation, Other, Active Sump, RH Lab active sump released
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The RH Lab active sump level reached the high limit yesterday due to an overflow of the ultrasonic cleaner in the Rad Waste Area. The sump
was sampled by RPG, and after analysis the water was approved for release. The water was pumped out today. Local and MCR alarms functioned
as expected. |
Wednesday, January 10, 2018, 17:45, Isaac Earle, Standard Operation, Target 2, Target, T2-MK2 beam spot photos, M20BB moved to storage pit 
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The T2-MK2 target was moved from the beamline to the hot cell on January 8th. The field at 0.5m was 130mSv/hr. Photographs of the beam
spot of the Position 4 target are attached below. This is a 12mm beryllium target (ID: "JUL.06#4). This is the only target on the T2 ladder
that has seen beam since it was installed on October 10, 2017. A shielding plug was installed on the T2 flange. A new 5cm target will be installed |
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Thursday, December 07, 2017, 13:54, Isaac Earle, Development, Other, Other, Waste pails transferred from warm cell storage bunker to rad waste pit
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Six 5 gallon pails were transferred this morning from a temporary storage bunker in the Warm Cell to the Rad Waste Pit for long term storage. The
pails contain various BL1A active waste from the East Hot Cell including dozens of irradiated beryllium and graphite targets. The field from the
pails ranged from 0.1 to 9mSv/hr at 0.5m. The work was performed according to the clean-out procedure (Document-142965). |
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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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Tuesday, October 10, 2017, 12:09, Isaac Earle, Standard Operation, Target 2, Target, T2-MK2 position 4 target changed
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The following work was performed on the T2-MK2 target assembly during the 2017 fall shutdown:
Oct 4, 2017: |
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Tuesday, August 29, 2017, 12:17, Isaac Earle, Maintenance, Target 1, Target, T1-MK1 and T2-MK1 Hansen water fittings replaced
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The #6 male Hansen fittings for the T1-MK1 and T2-MK1 targets (both currently stored in the target storage pit) were replaced today with new units.
Some of the target assembly Hansen fittings had shown signs of leaking and the internal seals are not easily replaced.
"120V" warning labels were put on the micro-switch IN and OUT limit sensors for the profile monitors on both targets. These are |
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Thursday, July 27, 2017, 09:34, Keith C Ng, Development, Other, Other, test 2
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| test 2 |
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Thursday, July 27, 2017, 08:57, Isaac Earle, Other, Target 2, Cooling, Failed T2CS:SVSEC valves investigation
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The three failed T2 cooling system secondary side solenoid valves were tested yesterday to try to determine the problem. The test steps are
detailed below:
New spare valve (NSV) produced audible "click" and valve was seen to physically open when 24V DC driving voltage was applied
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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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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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Monday, May 15, 2017, 16:55, Isaac Earle, Other, Target 2, Target, T2 profile monitor actuation issue
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On Thursday May 11th operators attempted to move the T2 profile monitor (T2-MK2) to the IN position but were unsuccessful. The monitor would
leave the OUT limit, but would not reach the IN limit. This was repeated 2 times. The air amplifier was inspected and nothing out of the ordinary
was noted. The T1 profile monitor was tested and was working properly. At the time it was suspected that the monitor cassette had become dislodged |
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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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Friday, May 05, 2017, 15:09, Isaac Earle, Development, Target 2, Target, T2-MK2 beam spot check in hot cell
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On May 5th the T2-MK2 target was moved to the hot cell for the purpose of checking the beam spot on the Position 2 beryllium target to confirm
the results of the T2 area realignment detailed in E-logs #218 and #220. In preparation beam was put on this target overnight for approximately 1.5hrs
at 10uA and 4 hours at 50uA (previously had not seen beam). Also, there had been issues with the T2 profile monitor over the last couple days, so |
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Tuesday, April 11, 2017, 17:31, Isaac Earle, Development, Target 2, Target, T2-MK2 target MRO and alignment of T2 devices
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The following work was performed on the T2-MK2 target assembly and the T2 Protect assembly for maintenance purposes and to implement the alignment
strategy detailed in E-Log #218:
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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 |
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