 Friday, February 28, 2020, 09:06, Isaac Earle, Development, Other, M9, M9 Q1Q2 service stand floor plate installed 
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The M9 service stand floor plate (TB23351) was installed in the M9 pit yesterday. Prior to installation all 5 threaded inserts were tested
using a 1/2"-13 stud tool on an RH pole. The west most hole (shown in red below) had damaged threads and the stud could only be threaded in
2 turns. All other locations (shown in green) had usable threads with 6-8 full turns possible with the stud tool. The plate was installed using |
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Monday, February 10, 2020, 14:51, Isaac Earle, Maintenance, Other, Other, T1-MK2 target and M9BB moved
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The T1-MK2 target was moved from the hot cell to Hole #5 in the storage pit. The M9 beam blocker was then moved from the beamline to the
hot cell for MRO work. A field of 14.4mSv/hr was measured at 0.5m from the beam blocker during removal. |
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Wednesday, February 05, 2020, 14:53, Isaac Earle, Maintenance, Target 1, Cooling, T1 & T2 cooling package MRO work completed
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Annual MRO work on the T1 and T2 cooling packages is now complete. The following tasks were performed:
Water from both packages drained to the South TNF holding tank (samples taken)
All Proteus paddle wheels, shafts, and
o-rings replaced (5 each at T1 and T2)
All Cuno filters changed
Archived data for all sensor readbacks inspected. Only |
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Thursday, January 30, 2020, 17:55, Isaac Earle, Repair, Target 1, Target, T1-MK2 target assembly repair completed in hot cell
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The following work was done to the T1-MK2 target in the hotcell between the dates of May 24, 2019 - Jan 30, 2020 (See E-Log #251 for further information):
May 24: Flushed position 2 with water, purged all positions with air. Left air running through position 0 over the weekend
May 27: Switched to position 5, left air running to dry out bellows
May 28: Started pump out with cold-trap; Reached "fine |
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Monday, January 20, 2020, 16:07, Isaac Earle, Other, Other, Other, Second 55-gal drum moved to cyclotron east vault tunnel
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The second (and final) 55 gallon drum containing active items from the Meson Hall East Hot Cell was transported today from the Warm Cell to the
Cyclotron East Vault Tunnel. The updated form is attached. |
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Tuesday, December 17, 2019, 12:39, Isaac Earle, Standard Operation, Other, Other, 55 gallon drum and old M9 service stand moved to Rad Waste Pit
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The following items were moved today from the Warm Cell to the Rad Waste Pit for long term storage:
1. A 55 gallon drum containing various active components from the East Hot Cell. The drum was labelled on the body and lid with the identification
number RWC-55-01-2019. |
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Monday, June 24, 2019, 14:29, Isaac Earle, Development, Target 1, Target, T1 and T2 target alignment frames overhauled 8x
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The following work was completed on both the T1 and T2 target alignment frames
One of the short taper pins on the top of the frame was swapped for a longer version to simplify flask alignment to the frame (now one
pin can be aligned at a time instead of both concurrently)
Three permanently mounted cameras installed to view east/west alignment, north/south |
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Wednesday, May 22, 2019, 14:25, Isaac Earle, Repair, Target 1, Target, T1-MK2 target moved to HC; T1-MK1 target moved to BL
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After extensive testing over the last 2 weeks it was determined that the protect monitor
on the T1-MK2 target had an issue with intermittent shorting between the high voltage line and ground (movement of the target ladder was causing the short
to come and go). |
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Tuesday, April 16, 2019, 15:35, Keith C Ng, Repair, Other, M9, M9 project post shutdown summary
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Completed work at m9 beam line:
- Removed existing service stand and associated cable and water services. Legacy b1 water services still need to be removed for future magnet installation.
Old service stand is currently in warm cell waiting for disposal. |
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Tuesday, February 26, 2019, 10:55, Isaac Earle, Maintenance, Target 1, Cooling, T1 and T2 MRO work and solenoid valve change summary
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The following work was completed between Jan 16 - Feb 19, 2019:
T1 and T2 cooling packages drained to South TNF holding tank, water sampled and tested, released after approval from RPG
T1
resin can swapped
All Cuno filters changed at T1 (3 total)
T1 inlet (T1CSPGIN) and outlet (T1CSPGOUT) pressure gauges replaced |
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Friday, January 25, 2019, 10:53, maicodallavalle, Repair, Other, Cyclotron electrical, Cyclotron Elevating system Motor electrical wire repairs
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2018 Cyclotron lid up problem. Station #9 was found to have the motor wires along the beam plain had damaged wire insulation. There were
bare wires in the conduit resulting in the wires shorting out. The wires were repaired with a quick short replacement. Lid went up for in tank work. After
lid down the problem was investigated. We checked the radiation levels at all of the stations to come up with a plan to determine witch of |
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Thursday, January 10, 2019, 13:51, Isaac Earle, Maintenance, Target 1, Cooling, T1 and T2 cooling packages inspected
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The T1 and T2 cooling packages were inspected today while running. No water leaks were observed at either package including the high-active loops
and copper active.
The T1 pump was fairly noisy (video was taken to record the sound). This is the new pump installed in August 2018 (see E-Log #242). |
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Thursday, November 01, 2018, 13:57, Keith C Ng, Other, Other, Other, nuclear venillation in hot cells not working
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Randomly checked on the nuclear ventilation for the Meson Hall Hotcells and discovered they were not running again (both magnahelic gauges displayed
zero). Attempted to restart the fan manually and the control box seems to not be working. Matt McClean has been contacted and they will look into the problem.
The nuclear ventilation is currently not running in the RHMH hot cells. |
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Thursday, October 25, 2018, 08:58, Keith C Ng, Repair, Other, Other, T1 collimator valve solenoid coil replaced again
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On 23rd October we restarted the T1 and T2 water packages after the mini shutdown and after the site power outage.
The rotary collimator was reporting no water flow and it was assumed the valve coil ( |
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Thursday, September 06, 2018, 13:49, Isaac Earle, Repair, Target 1, Cooling, T1 cooling package secondary side solenoid failed
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On Friday Aug 31 at approximately 3am T1CS:FGSEC dropped to 0gpm flow. This was confirmed to be a real reading when T1CS temperatures continued
to rise steadily. Beam was turned off, and T1CS later turned off by operators (temps continued to rise due to heat from pump). The cooling
package was uncovered in the morning, and the T1CS:SVSEC solenoid was replaced by Doug Preddy and Keith Ng. This solved the problem and the package |
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Tuesday, August 28, 2018, 11:16, Isaac Earle, Standard Operation, Other, Other, South TNF Holding Tank water released
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The water in the South TNF Holding Tank was released today under work permit #C2018-08-28-3. The tank contained approximately 100L from the
T1 cooling package (drained Aug 16, 2018) and 350L from the 500MeV system (drained April 23, 2018 by Steve Sapriken). |
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Thursday, August 23, 2018, 11:52, Isaac Earle, Repair, Target 1, Cooling, T1 cooling package pump failure and replacement
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On Wednesday August 15th the T1 cooling package tripped off, and could not be restarted. On the EPICS screen the pump device went into an immediate
time-out each time we attempted to turn it on. An electrician was involved in the debugging, and issues were found with the 480V supply. The
breaker switch in the 480V supply panel was found to be damaged, and was replaced. The relay in the contactor box for the pump motor thermal protection |
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Monday, July 23, 2018, 09:39, Isaac Earle, Repair, Target 1, Cooling, T1 collimator solenoid valve failed - Solenoid replaced
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On Saturday July 21st the T1 Collimator solenoid valve would not re-open after tripping closed due to a (planned) loss of vacuum. Shielding was
removed and the valve solenoid was replaced which fixed the problem. The original valve body was left in place.
This is the second time the solenoid at this location failed (See E-Log #239), and the latest of several failures of these new 24VDC solenoids |
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Tuesday, July 03, 2018, 11:09, Isaac Earle, Repair, Target 1, Cooling, T1 cooling package outlet water pressure sensor replaced
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The T1 cooling package outlet water pressure sensor (B1A:T1CS:PGOUT) was replaced this morning with a new unit. Over the last few months
the sensor readout had been steadily decreasing (from around 20psi to 4psi) with no corresponding decrease in inlet pressure, and no change in the circuit
flowrate (this is how these pressure sensors typically fail). |
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Friday, June 01, 2018, 17:50, Isaac Earle, Repair, Target 1, Cooling, T1 collimator solenoid valve coil replaced
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Flow stopped through the T1 collimator cooling loop around the same time as a power bump this afternoon. The problem was narrowed down to failed
solenoid valve B1A:T1:SVCOL by comparing coil resistance to other units without issue (~1.0ohm vs 3.6ohm for working units), measured at the T1/T2 PLC
cabinet. Shielding above the T1 package was removed and the solenoid coil was replaced with a new unit. After replacement the valve works as |
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