 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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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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Wednesday, January 14, 2015, 15:06, Isaac Earle, Standard Operation, Target 1, Other, Active Item Stored in East Hot Cell
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The active item discovered on January 9, 2015 outside the BL1A bootbox has been moved to the Meson Hall east hot cell for storage. The item was
analyzed by RPG and the radiation was found to be coming from activated metal contained by dried paint in the bottom of a plastic container. The
solidified paint puck was removed from the container which is not active. The item is approximately 20microSv/hr at 0.5m, and 1.3mSv/hr on contact. |
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Wednesday, January 14, 2015, 13:32, Isaac Earle, Standard Operation, Target 1, Target, T1-MK2 Moved from B/L to Storage Pit
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The T1-MK2 target was transferred from the beam line to the storage pit in hole #5 using the transfer flask. A maximum field of 7.2mSv/hr was measured
at 0.5 meters from the target. A video was taken while the target was lifted from the monolith and can be found on Isaac's PC (too large to upload).
The blocks to the west and east side of the T1 monolith (level with the monolith) were swiped by Danka Krsmanovic and no contamination was found. |
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Monday, January 12, 2015, 16:35, Isaac Earle, Standard Operation, Target 1, Cooling, T1 & T2 MRO Status
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The following tasks have been performed at T1:
- T1 monolith painted using grey two part epoxy paint
- Video inspection taken while package running. Small leak from both valves on H.E. secondary side (video on Isaac's PC, too large to upload) |
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Wednesday, January 07, 2015, 17:27, Isaac Earle, Repair, Target 2, Water Leak, Water Leaks at T2 Cooling Package
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The T2 cooling package was visually inspected today after blocks were removed. With the cooling package off the following leaks were observed:
- Collimator A return line ball valve: ~ 2 drops / second
- Collimator B return line ball valve: ~ 1 drop / 3 seconds |
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Monday, January 05, 2015, 15:08, Isaac Earle, Standard Operation, Target 2, Water Leak, Cooling Packages Re-Started; Suspect External Water Leak at T2 Package
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Pumping was restored to 1A today by Vacuum Group and the beam line returned to normal vacuum levels. Both cooling packages were started with no
change in vacuum (no water leaks inside the vacuum volume). The T2 package was left on for approximately 1 minute, and then the expansion tank level
was checked. Approximately 1cm of water was lost. The T2 package was turned off, and will remain off until the package can be inspected later |
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Monday, December 22, 2014, 14:31, Isaac Earle, Maintenance, Target 2, Water Leak, Drop in T2 water level
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This morning at 5:30am the T2 cooling package expansion tank switched to WARNING LEVEL NOT OK. There was no change in BL1A vacuum at this time.
The change in level was confirmed by inspecting the water level visually. Operators suggested it may have happened because the cyclotron was
shut off and the temperature of all water systems dropped, however T1 did not experience a noticeable change in level, so I do not think this is the cause. |
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Friday, December 19, 2014, 14:35, Isaac Earle, Standard Operation, Target 2, Other, Amplified Air Shut Off
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The BL1A amplified air system has been shut off, and will remain off until required for BL1A start-up in Spring 2015 (the lower of the two units was
in use, with the upper unit on standby as a spare). |
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Tuesday, December 09, 2014, 14:45, Isaac Earle, Repair, Target 1, Target, T1-MK1 Repair Status (Pos'n 1 Plug Leak)
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Between Nov 14 ~ Dec 9 the following activities took place:
- The leaky 10mm Be target at pos'n 3 was removed and plugged
- The loose protect monitor electrical conduit was secured in place using an aluminum shim |
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Tuesday, November 18, 2014, 10:52, Isaac Earle, Standard Operation, Target 1, Active Sump, RH Hot Cell Lab Active Sump Released
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Release of the Remote Handling Hot Cell Lab active sump water was completed today by
Hua Yang. During the procedure fields of up to 0.50 micro Sv/hr were measured around the newly installed filter housing. After completion the filter was removed and replaced. The filter measured 450cpm on the |
Monday, November 17, 2014, 10:25, Isaac Earle, Repair, Target 1, Other, Amplified Air Leak In T1 Area Repaired 
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While the 1A blocks over the T1 area were removed last week the opportunity was used to investigate an air leak on the amplified air system discovered
on August 11, 2014.
The leak was found to be coming from a device related to the septum polarity switch located behind (south of) the septum power supply on the 1A |
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Monday, November 17, 2014, 10:14, Isaac Earle, Development, Target 1, Active Sump, Filter Installed Downstream of RH HC Lab Active Sump
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A filter housing and filter were installed by Dan McDonald on November 14 in the piping section between the Remote Handling Hot Cell Lab active sump
and the city sewer drain as shown in the attached picture. The purpose of the new filter is to prevent pieces of active material from being released
to the drain when the sump is pumped out. If small pieces of active material enter the sump they may sink to the bottom, and not be captured in a |
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Friday, November 14, 2014, 17:30, Isaac Earle, Repair, Target 1, Target, T1-MK1 Target Failure / T1 Target Swap
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- On Nov 13 at ~1am the BL1A vacuum went bad. The T1 and T2 volumes were isolated and pumped
on separately, the results indicated a water leak from the T1 target. The level of the expansion tank was slightly below normal at this time, but
not enough to be conclusive. The leak was confirmed at ~9am by starting the T1 cooling package which caused a dramatic vacuum spike. Approximately |
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Thursday, November 06, 2014, 17:22, Ron Kuramoto, Repair, Target 2, Cooling, 1AT2, faulty Thermister water out temperture
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Summary: |
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Thursday, November 06, 2014, 17:18, Ron Kuramoto, Repair, Target 2, Cooling, 1AT2 Collimator B, faulty Thermister water out temperature
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On 14Oct2014, the 1AT2 Collimator B water outlet temperature rose to 100o C.
Troubleshooting the T2 Collimator B water out temperature (T7) by swapping it's analog
signal in PIE box #2 with T2 Collimator A water out temperature (T6) to see if problem follows. See if unplugging T7 signal causes Safety Page SV7 1A Collimators |
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Thursday, October 16, 2014, 17:44, Ron Kuramoto, Repair, Target 2, Water Leak, 1A Tunnel T2 Cu-ALCW water leak repair 6x
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On Oct 7th,
during the Mini Shutdown, the T2 cooling package was uncovered to investigate the Cu-ALCW water leak dripping into the 1A Tunnel. |
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Thursday, September 11, 2014, 15:36, Ron Kuramoto, Repair, Target 2, Water Leak, 1A Tunnel T2 Cu-ALCW water leak
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On Sep. 3rd during the 6 hr maintenance day, Doug Preddy
& I went into the 1A tunnel under “controlled access” to investigate a water leak that triggered the Water Detection Sensors. It was also noticed that the Cu-ALCW tank level was losing water. |
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Wednesday, August 13, 2014, 16:34, Isaac Earle, Repair, Target 1, Other, Amplified Air Leak Narrowed Down to T1 Area
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During the maintenance day today, amplified air to the T1 area was valved off in an attempt to pin point the location of the air leak. The
air amplifier cycle rate returned to normal with the T1 line valved off, indicating the leak is somewhere on the T1 profile monitor air cylinders, the
T1 septum polarity switch, or on the supply lines to these devices. Because these devices will not be used in the near future, the line will be left |
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Monday, August 11, 2014, 16:57, Isaac Earle, Repair, Target 2, Other, Air Amplifier Increased Cycle Rate
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On Friday August 8th Ron Kuramoto observed that the Meson Hall air amplifier cycle speed had increased. Cycle time measurements were taken on Monday
August 11th. The lower amplifier was found to be cycling 17 times per minute, and the upper air amplifier 16 times per minute (approximately 4s cycle
period). The cycle period for both amplifiers was measured in June 2012 and found to be approximately 25s. Note that a cycle is defined as |
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