 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 |
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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Wednesday, July 02, 2014, 16:56, Isaac Earle, Repair, Target 1, Cooling, T1-P2 and T2-P1 pressure transducers replaced.
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The T1-P2 (outlet) pressure transducer was replaced to address an erroneous signal. The XTPAGE value now reads as expected.
The T2-P1 (inlet) transducer was also replaced to address a noisy (and worsening) signal. Replacing the transducer seems to have had no effect
on the XTPAGE values. A possible controls issue is suspected and Jamie Cessford will be notified so that the matter is directed to the appropriate |
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Tuesday, June 03, 2014, 22:56, Isaac Earle, Standard Operation, Target 2, Target, T2 Target Position Moves (Development Shift)
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The T2 target was moved from Position 4 to Position 0 at 11:15am so the profile monitor could be used during the development shift.
The T2 cooling package tripped regularly throughout the day on high flow while in position 0.
At 10:45pm the T2 target was returned to the previous running position: approximately 2mm above the nominal position 4 elevation (pot ratio fluctuating |
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Wednesday, May 14, 2014, 20:36, Grant Minor, Development, Target 2, Target, Target exercised to position 0, then back to 2.0 mm above position 4
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The T2 target was exercised to position 0 around 6:15pm so that the T2 profile monitor could be used by operations. The T2 water package was re-enabled
when the target was in position 0, however this resulted in some trips of the cooling package.
Operations called around 7:45 to request return of the target to about 2mm above position 4. |
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Monday, May 05, 2014, 15:46, Isaac Earle, Repair, Target 2, Target, T2 Protect Returned to B/L
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The T2 protect monitor was returned to the beam line using the shielded flask. The alignment pin did not align with the hole in the vacuum flange,
but could be aligned by hand by rotating the monitor assembly while it was hanging from the flange. The protect monitor vacuum flange was bolted
down and all services connected. The T2 protect and profile monitors were checked by Dave Cameron (both OK). Vacuum was pumped down and the |
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Friday, May 02, 2014, 15:49, Isaac Earle, Repair, Target 2, Target, T2 Protect Monitor Elevation Correction
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When beam was started in mid-April, it was observed by Operations Group that with the beam centered vertically within the protect monitor, the profile
monitor showed the beam spot to be approximately 6mm high. The protect monitor was changed during the shut-down due to a failure in November 2013,
so it was suspected that the new protect monitor was not aligned properly. The beam spot appeared to be dangerously close to the top weld of the |
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Monday, April 14, 2014, 15:30, Isaac Earle, Standard Operation, Target 2, Target, T2 Target Moved to Position 4
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The T2-MK2 target (currently installed in the beamline) was moved from position 0 to position 4 (10cm Be) using the portable control box.
The T2 cooling package was started after moving the ladder.
There was no change in the BL1A vacuum. The T2 expansion tank water level dropped slightly, as expected (around 1/16"), and was refilled |
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Thursday, April 03, 2014, 16:35, Isaac Earle, Standard Operation, Target 1, Cooling, T1 Cooling Package Started
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The T1 cooling package was started around 2pm today. There was no change to the T1 volume vacuum during startup.
The package was inspected for water leaks: None found.
The demin loop flow (Q2) was adjusted to ~1.5gpm. |
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Thursday, April 03, 2014, 13:43, Isaac Earle, Standard Operation, Target 2, Target, T2 Profile Monitor OK
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T2 Profile Monitor actuation was tested today from the control room and all is working properly. The position (IN / OUT) also displays correctly.
To my knowledge nobody has looked at this system, so it is a mystery why it suddenly started working. This e-log will be updated if any explanation
is found. |
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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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Tuesday, April 01, 2014, 10:17, Isaac Earle, Repair, Target 2, Target, T2 Profile Monitor Actuation - Fault Report
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The T2 profile monitor cannot be actuated from the control room. When the solenoid valve that supplies air to the air cylinders is powered directly,
the monitor moves in normally, therefore a controls issues is suspected.
Additionally the monitor position shows neither IN nor OUT. This does not change when the monitor is at either limit. Proper actuation |
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Friday, March 28, 2014, 13:59, Isaac Earle, Maintenance, Target 2, Cooling, T2 P1 Transducer and T2 Q1 Flow Meter Replaced
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The T2 P1 pressure transducer (Omega PX315-100GI) and T2 Q1 Proteus flow meter (0150SSTF3) have been replaced with new units to address issues with noisy
signals. |
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Tuesday, March 25, 2014, 18:24, Isaac Earle, Development, Target 2, Water Leak, Water Detecting Sensor Install at T1 & T2 9x
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Water detecting strips were installed around the T1 and T2 areas today with Doug Preddy and contractors from SMT Research. Four sensors were installed
at various locations on each cooling package. Four sensors were installed on the top surface of the T2 monolith. In addition, four sensors
were routed for future installation at the T1 monolith (it is currently covered by blocks and requires cleaning and painting before sensor installation). |
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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, March 11, 2014, 13:50, Isaac Earle, Repair, Target 2, Target, T2 Protect Monitor Returned to Beam Line
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After the monitor assembly was moved to the hot cell, electrical checks were performed by Bill Rawnsley which showed the same results as when tested
in the beam line. A new monitor was installed (supplied by Probes Group), the tests were repeated, with all results appearing normal. The monitor
assembly was transported to the beam line this morning and installed at the T2 monolith. All cables were attached and the flange was bolted down. |
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