 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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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 |
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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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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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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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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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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Wednesday, August 19, 2020, 12:57, Isaac Earle, Maintenance, Target 1, Cooling, T1/T2 MRO summary for 2020 shutdown
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The following work was completed during the 2020 shutdown period for BL1A (Jan-Aug 2020):
T1 and T2 EPICS data checked for anomalies. None found, all sensors behaving as expected
T1 and T2 cooling package
water drained to storage tank, sampled, and released
All cuno filters changed (3 for T1, 2 for T2)
All T1 and T2 proteus paddle |
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Tuesday, October 27, 2020, 14:01, Isaac Earle, Repair, Target 2, Cooling, T2 Collimator flow meter paddle wheel replaced
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The T2 Collimator A flow meter signal (B1A:T2:FGCOLA) began fluctuating and occasionally reading 0gpm on Sunday Oct 25 causing BL1A trips and machine
down time.
On the maintenance day today (Tues Oct 27), the T2 package was uncovered and the T2 Col. A flow meter was opened. No unusual deposits were |
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Friday, April 09, 2021, 12:42, Matthew Gareau, Maintenance, Target 2, Cooling, Changed the paddle wheel, o ring, and shaft in the Collimator A flow meter at the T2 package
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With the assistance of Maico we changed the paddle wheel, o ring, and shaft in the Collimator A flow meter (Q4) at the T2 package.
Flow meter was wiped clean to ensure o ring surface was clean.
Everything was changed without incident, and ops confirmed that the flow rate is now normal. |
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Thursday, March 10, 2022, 11:18, Adam Newsome, Maintenance, Target 2, Cooling, Changed paddle wheel, o-ring, and shaft in flow sensors at T2 cooling package
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The paddle wheels, o-rings, and shafts were changed at the T2 cooling package for the following sensors:
B1A:T2:FGCOLA
T2CS:FGTGT
T2CS:FGDEM
T2CS:FGSEC
T2:FGCOLB
No
major issues were noted. Some residue was observed upon cleaning the sensors. No leaks observed when turning water isolation valves back on. |
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Thursday, March 10, 2022, 13:57, Adam Newsome, Maintenance, Target 1, Cooling, Changed paddle wheel, o-ring, and shaft in flow sensors at T1 cooling package
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The paddle wheels, o-rings, and shafts were changed at the T1 cooling package for the following sensors:
B1A:T1:FGCOLA
T1CS:FGTGT
T1CS:FGDEM
T1CS:FGSEC
T1:FGCOLB
No
major issues were noted. Some residue was observed upon cleaning the sensors. No leaks observed when turning water isolation valves back on. |
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Friday, March 11, 2022, 15:05, Adam Newsome, Maintenance, Target 1, Cooling, O-rings on T1 cooling package water reservoir changed
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| The four o-rings on top of the T1 cooling package water reservoir were changed as per the recommended 5 year replacement schedule. |
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Friday, March 11, 2022, 15:06, Adam Newsome, Maintenance, Target 2, Cooling, O-rings on T2 cooling package water reservoir changed
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| The four o-rings on top of the T2 cooling package water reservoir were changed as per the recommended 5 year replacement schedule. |
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Friday, March 11, 2022, 15:08, Adam Newsome, Maintenance, Target 1, Cooling, Filters replaced: T1 cooling system
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| All filters were replaced for the T1 cooling system: demineralizing resin circuit, target water system, and M15. |
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Friday, March 11, 2022, 15:09, Adam Newsome, Maintenance, Target 2, Cooling, Filters replaced: T2 cooling system
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| All filters were replaced for the T2 cooling system: demineralizing resin circuit and target water system. |
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Monday, March 14, 2022, 14:08, Adam Newsome, Maintenance, Target 1, Cooling, T1 cooling system: filled, tuned, leak-checked
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The T1 cooling system was refilled with water via the expansion tank until the tank level read approximately 38 cm.
The system pump was restarted. All sensors displayed acceptable nominal values. Demin flow was tuned to 1.0 gpm.
No leaks or abnormalities observed - system running normally. |
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Monday, March 14, 2022, 14:09, Adam Newsome, Maintenance, Target 2, Cooling, T2 cooling system: filled, tuned, leak-checked
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The T2 cooling system was refilled with water via the expansion tank until the tank level read approximately 38 cm.
The system pump was restarted. All sensors displayed acceptable nominal values. Demin flow was tuned to 1.0 gpm.
No leaks or abnormalities observed - system running normally. |
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Wednesday, March 16, 2022, 14:16, Matthew Gareau, Standard Operation, Other, Cooling, T1/T2 water packages drained to B1A AWHT, tested, and released. Also solenoid valve SV1 broken
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The T1/T2 water packages were drained into the B1AAWHT (280L), the water was sampled and tested by RPG, results included in elog.
Once given the all clear myself and Maico released the water from the B1AAWHT (300L).
It was discovered that the solenoid valve SV1 which is located in the RH lab beside the sump, is broken and will need replacing, picture included |
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Wednesday, June 08, 2022, 08:59, Adam Newsome, Other, Target 2, Cooling, T2 flow rate sensor (BL1A:T2CS:FGTGT ) - warning and trip limits adjusted
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See fault 14966:
Normal
0
false
false
false
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