 Wednesday, April 05, 2017, 17:55, Isaac Earle, Development, Other, Target, T2 area devices alignment strategy 
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A strategy for alignment of the T2 protect monitor, T2 target, and T2 Collimator A was discussed today and decided upon by Yuri Bylinski, Isaac Earle,
Yi-Nong Rao, and Roman Ruegg. The purpose of the adjustment is to try to reduce the amount of beam lost as it passes through the T2 area (presumably
being blocked by the collimator because it is not possible to steer the beam through all three devices in their current configuration). Keeping in |
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Thursday, March 30, 2017, 09:48, Isaac Earle, Development, Other, Controls, T1/T2 control system de-glitching & target ID changes
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The following changes were made to the T1/T2 PLC control system:
- De-glitching system investigated and Tony discovered that it was programmed incorrectly: the de-glitch time was observed only when a PV
changed from bad state to good, not the opposite (meaning there was actually no de-glitching in place since system start-up in 2016!). This was reversed |
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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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Wednesday, March 15, 2017, 16:13, Isaac Earle, Standard Operation, Other, Active Sump, Meson Hall Hot Cell Lab Active Sump Water Released
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On March 13th in the morning the Meson Hall Hot Cell Lab active sump reached the high level sensor. The system responded as expected: high
level panel warning light illuminated, siren sounded, and MCR notified via "B1 RCR1 RM6 WARN". A 1L sample was delivered to RPG for analysis.
After approval, the sump was pumped out over the following two days. The procedure in Document #64834 was followed for sampling and pump-out. |
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Thursday, January 19, 2017, 08:55, Isaac Earle, Standard Operation, Target 1, Cooling, T1 MRO work complete
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The following work was completed on the T1 cooling package:
- water drained to BL1A holding tank
- all resevoir o-rings changed |
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Thursday, January 12, 2017, 09:21, Isaac Earle, Standard Operation, Target 2, Target, T2-MK2 Position 1 Beam Spot
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The beam spot on the 10cm beryllium target in Position 1 on T2-MK2 (Target ID: "OCT.06#3") was measured and photographed yesterday. A
fairly well centered spot was measured to be approximately 4.6mm wide x 5.2mm tall on the entrance window and 5.7mm wide x 7.6mm tall on the exit window
using the Nikon micrometer level. This target first saw beam on June 16, 2016. |
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Monday, January 09, 2017, 15:07, Isaac Earle, Standard Operation, Target 2, Target, T2-MK2 Target Moved from BL to HC
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The T2-MK2 target assembly was moved from the beam line to the hot cell today. A maximum field of 203mSv/hr was measured at approximately
0.5m
A steel shielding plug has been installed in the T2 hole to reduce shine and allow the T2 volume to be pumped down. |
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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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Thursday, October 06, 2016, 12:16, Isaac Earle, Development, Target 1, Controls, Expansion Tank High Level Warning Added
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An expansion tank high level warning has been added to the T1/T2 control system under Work Request #4011. The purpose for this new warning
is to alert staff of an unexpected water increase in the unlikely scenario that a leak develops in the heat exchanger between the two fluids and CuALCW
on the secondary side enters the target water system. The new thresholds for high level warn, low level warn, and low level trip have been set at |
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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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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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Thursday, September 08, 2016, 17:26, Isaac Earle, Development, Other, Active Sump, New Active Sump High Level Switch and Electronics Installed
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To address the deficiencies identified in E-Logs #204 and #205 the old active sump high level switch was replaced with Omega LV164SS model (316SS stem
and float, 4' length, standard mount) using adaptor flange TRH1316 to mount to the top flange of the sump. A new electrical box was also installed
(circuit diagram attached in PDF format). The circuit was designed by Don Jackson and wired by Travis Cave. Connection to the RCR Lab PLC was |
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Tuesday, August 30, 2016, 14:09, Isaac Earle, Development, Other, Controls, T1/T2 PLC Code Update
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A new version of the T1/T2 PLC code has been uploaded to the PLC CPU. The main change in the new version is a fix to a bug related to the
target MK# which may have caused the previous CPU crashes. The EPICS interface now needs to be updated so that no target information is displayed
on the EPICS screens when there is no target installed, or jumpers for both MK1 and MK2 are detected. This must be tested during the next maintenance |
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Wednesday, July 06, 2016, 13:31, Isaac Earle, Other, Other, Active Sump, Active Sump RCR Lab and MCR Alarms Not Working - Suspect Controls Issue
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Further tests were done on the active sump high level float switch today. The switch was triggered 1 time by filling the sump, and approximately
8 times by tilting the sensor manually. A local alarm sounded in the hot cell lab each time, but only one time in the RCR Lab and MCR (this occurred
on the final trial). Fault report #9099 has been submitted to Controls Group. Although the existing float sensor did cause a local alarm when |
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Tuesday, June 28, 2016, 16:28, Isaac Earle, Other, Other, Active Sump, RH MH Hot Cell Lab Active Sump High Level Sensor Test
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The high level sensor for the Meson Hall Hot Cell Lab Active Sump was tested today and worked as expected. When the sensor is tilted (as
occurs when the water level rises above it) an audible alarm sounds in the hot cell lab, and the Safety Panel in the MCR also alarms with "MHESA B1
RCR1 RM 6 WARN" displaying NOT OK. This alarm sounds every 3 minutes in the MCR until the PLC outside of the RCR lab is reset. When the |
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Tuesday, June 28, 2016, 08:32, Isaac Earle, Other, Other, Active Sump, RH MH Hot Cell Lab Active Sump Overflow
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A call was received from the MCR at approximately 21:30 on Monday June 27th to report that active drains in the east end of the Meson Hall were
backing up and overflowing. I came in and found the leak coming from a broken spray nozzle in a sink in the rad waste area. The leak was stopped
at which point there were puddles between 1-2m diameter around the active sump top flange, the drain directly south of the warm cell water windows, and |
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Tuesday, June 21, 2016, 09:25, Isaac Earle, Development, Other, Controls, T1/T2 EPICS System With-Beam Testing
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With-beam commissioning tests were completed today by Tony Tateyama and Isaac Earle. The test results are attached in PDF format. These
tests are described in Section 7 of the Commissioning Plan (Document-118467 Release #2). These tests were not part of the official commissioning,
but intended as an additional check of system functionality with beam on, and to confirm that the CCS current protection system performs as expected. |
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Wednesday, June 15, 2016, 11:00, Isaac Earle, Standard Operation, Target 2, Target, T2-MK2 Target Moved to Position #1
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Position #4 on the T2-MK2 target has now reached the maximum beam time. The target was moved to Position #1 at the nominal elevation. This
target should be used for the remainder of the 2016 running period. |
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Friday, May 13, 2016, 15:04, Isaac Earle, Standard Operation, Target 2, Target, T2-MK2 Position 4 Adjusted to +1.5mm Offset
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The T2-MK2 target at Position 4 has been adjust to approximately +1.5mm offset. This causes the ladder to be moved downwards, raising the beam
spot location on the target window. The potentiometer ratio at this offset is approximately 0.810 (> 0.8059 nominal ratio for position 4, and
therefore closer to Position 5) |
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Friday, April 22, 2016, 14:45, Isaac Earle, Other, Other, Active Sump, RH MH Hot Cell Lab Active Sump Water Released
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The Remote Handling Hot Cell Lab Active Sump has been released to city sewer following the procedure in Document-64834. The water was close to
the sump high limit switch (approximately 5800L). Before release the water was sampled, tested, and approved for release by RPG. The tritium
analysis form has been filled out and returned to RPG,. |
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