 Monday, December 10, 2012, 15:42, Isaac Earle, Maintenance, Target 1, Target, T1-MK2 Target Maintenance
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- T1-MK2 target moved from storage pit to hot cell
- Removed unused proximity sensor and associated wiring (stored in tool-port boot box cabinet)
- Tested profile monitor actuation: seems stiff, but moves ok; start travel @ 30psi, fully in position @ 50psi |
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Thursday, November 22, 2012, 17:22, Isaac Earle, Standard Operation, Target 1, Active Sump, RH Lab Active Sump Released
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On Wednesday November 21 at approximately 9am the level of the Remote Handling active sump was inspected and found to be at approximately the 7000L
level. The high level alarm sounds at approximately 5800L. The high level alarm had been silenced by somebody, and RH staff had not been notified.
It is unknown when the high level alarm was reached. The total sump volume is 7200L (which if exceeded will cause active water to spill on |
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Tuesday, November 13, 2012, 16:26, Isaac Earle, Repair, Target 1, Target, Manipulator Repair Complete
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Repair of the west side manipulator in the west hot cell was completed today. Part of the repair was done by entering the hot cell using
double tank suits and supplied air. The repair was then completed on the master side of the manipulator. The manipulator is now operating smoothly.
Two sales representatives from Central Research Labs visited TRIUMF today as they were already in Vancouver on other business. I showed them |
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Wednesday, October 24, 2012, 17:38, Isaac Earle, Repair, Target 2, Target, T1 & T2 Target Ladder Control System Status
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During the recent shutdown for the T2/M9 joint repair Graham Waters replaced the corrupted application code on the controller RAM disk. The
T1 target position control is now functioning properly. T2 target position control is still not operational due to an electronics problem within
the motor driver. The T2 ladder position may still be moved using the portable control box. The T2 target ladder was moved to position 3 (10cm |
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Wednesday, October 24, 2012, 17:34, Isaac Earle, Repair, Target 1, Target, T1-MK2 Target Repair Complete
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The target ladder was detached, old delta seals removed, sealing surfaces cleaned using scotchbrite pad and a dremel tool, and delta seals were installed
on the lower face of the upper slide plate. The target was leak checked and found to have no significant leaks (no response from 2s helium spray
at previous leak location on upper slide plate). |
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Friday, September 28, 2012, 15:19, Isaac Earle, Repair, Target 1, Target, T1-MK2 Delta Seal Leak
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After removal of the leaky target cassette at position 3, plugs were installed on the target ladder and a leak check was performed. With
the target pumped down to approximately 10 mTorr, and helium detector gauge baseline of 9 on the 10X scale, a response of up to 25 on the 500X scale was
observed when leak checking the right side delta seal on the lower face of the upper slide plate using a standard 1s spray of helium at 3 psi. The |
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Tuesday, September 25, 2012, 16:31, Isaac Earle, Repair, Target 1, Target, T1/T2 Controls
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- The target control software was modified to reference the correct pot. look-up table for the target at T1 (T1-MK1)
- The target position buttons on the T1 & T2 panels were not working properly and Graham Waters was contacted to investigate
- Graham power cycled the microprocessor and the TG1 crate which seemed to make things worse (the control software would not even boot up) |
Thursday, September 13, 2012, 18:09, Isaac Earle, Maintenance, Target 1, Cooling, September Shutdown T1 & T2 MRO 
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The following tasks were performed during the 2012 September Shutdown:
- Both targets moved to position 0 in preparation for testing of profile monitors (portable ladder control box was used for controlling ladder
motors) |
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Friday, September 07, 2012, 16:39, Isaac Earle, Repair, Target 1, Target, RH Lab Crane Repaired
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The "west" button on the crane pendant was broken, and the crane would occasionally continue moving west when the button was released.
The button was replaced by a Gordon Crane technician, who also did a crane inspection. The hoist in the target flask is also due for an inspection,
but it was not possible to do it this visit. Neil Wong will try to have it done next time a crane technician is in. |
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Friday, September 07, 2012, 16:35, Isaac Earle, Repair, Target 2, Target, T2-MK1 Target Repair Completed
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- Profile monitor wiring harness checked by Bill Rawnsley using resistor pack --> OK
- New profile monitor (0.005" gold coated molybdenum wires) installed & blip tested --> OK
- Potentiometer checked --> OK |
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Wednesday, August 08, 2012, 14:40, Isaac Earle, Repair, Target 1, Target, T1-MK1 Target Repair Complete
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- Re-wired profile monitor was received from Probes Group and installed on the target
- Protect and profile monitors were 'blip' tested, both OK
- Profile monitor actuation and limit switches tested, all OK (monitor starts to travel @ 20psi, |
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Friday, July 27, 2012, 14:48, Isaac Earle, Repair, Target 1, Target, T1-MK1 Target Repair Update
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- T1MK1 target transferred from storage pit to hot cell (max field: 4700 μSv/hr
@ 0.5m)
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Monday, July 23, 2012, 16:01, Isaac Earle, Development, Target 1, Target, Target Flask Seismic Restraint Clamps Installed
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Installation of the seismic restraint clamps has been completed for the MK1 and MK2 target flasks in the Remote Handling lab (photos attached).
Two clamps on the MK1 flask required 3/8" shims due to warpage of the flask baseplate (see photo IMG_0429).
Dragan Mitrovic has been notified so that he can inspect the installation and close the work request. |
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Tuesday, July 17, 2012, 15:30, Isaac Earle, Development, Target 1, Cooling, T1 & T2 Expansion Tank Level Warnings Added
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Mike Mouat and Juan Pon have modified the control system so that the control room will receive a message when the warning or trip level sensors
for the T1 & T2 expansion tanks read "NOT OK". The message also displays the current water height in the tank. This will help
with earlier detection of water leaks from the cooling package or from the target ladder in the vacuum volume when the vacuum interlock has been defeated. |
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Wednesday, July 11, 2012, 17:51, Isaac Earle, Repair, Target 1, Target, T1 Target Swap
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BL1A was started yesterday and brought up to 10μA. A problem was noticed with the T1 protect monitor (the right and bottom plates were not showing any response when the beam was swept
across the monitor). The protect monitor is new and was installed on the target assembly in February 2012, so this is the first time it has seen |
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Monday, July 09, 2012, 17:17, Isaac Earle, Standard Operation, Target 1, Target, BL1A Start-Up Prep
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- T1 & T2 targets switched to "remote" control
- Both target ladders were moved to Position 3 (12mm Be)
- T2 Q1 flow interlock defeat was removed (only required when target ladder is in position zero) |
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Friday, July 06, 2012, 16:03, Isaac Earle, Repair, Target 1, Target, T1-MK2 Target Repair Complete
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Target elevation measurements and beam spot plots were completed on the T1-MK2 target and the target is now fully repaired and ready for use. It
will be returned to the storage pit when cranes are available.
A copy of the elevations measurements and beam spot plots is attached. |
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Tuesday, July 03, 2012, 13:23, Isaac Earle, Standard Operation, Target 2, Target, T2 Plug Block Replaced & Beam Blockers Tested
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The T2 plug block was replaced and the M9 and M20 beam blockers were tested. The plug block did not interfere with the travel of the beam blockers.
There was no change in the T2 vacuum during BB actuation.
Initially there was some confusion about how to actuate the beam blockers. The following was learned: |
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Friday, June 29, 2012, 14:18, Isaac Earle, Repair, Target 1, Target, Manipulator Repair Complete
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Repair of the west side hot cell manipulator was completed and the manipulator was re-installed into the cell. The z-motion slave tapes,
upper counterweight tapes, and lower counterweight tapes were replaced on both sides.
100cpm contamination was found on the slave arm from a wet wipe. No contamination was found in the lab. |
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Tuesday, June 26, 2012, 09:05, Isaac Earle, Maintenance, Target 1, Cooling, T1 & T2 Target Water Flow Transducers Serviced
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The target water outlet flow transducers on the T1 and T2 cooling packages were serviced (new shaft, paddle wheel, & o-ring) to address a noisy
signal. The service corrected the noisy signal. Additionally, it appears the worn parts were causing the transducers to read high, as both
dropped approximately 1 gallon/minute after the service. Both transducers would occasionally trip the high flow warning (8.5gpm), and should now |
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