 Sun Oct 5 18:54:27 2008, Doug Preddy, Quench Recovery, Solenoid Quench ~16:30
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| Restarted compressor and flow to coldbox by 18:30 |
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Mon Dec 12 09:24:29 2005, Doug Preddy, Quench Recovery, Solenoid Quench on power lead temp
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The solenoid tripped on power lead temps at about 9:15. I am recovering it
from it's all around mode into parallel cold return. |
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Tue Aug 8 07:27:49 2006, Doug Preddy, Quench Recovery, Solenoid Quench at about 6:00 this morning
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No indication of problem. Turbines still running, but no flow to solenoid.
Started flow. Solenoid ~20K. |
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Tue Oct 9 12:58:22 2007, Doug Preddy, Quench Recovery, Solenoid Quench 2
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Refrigeration sytem shut off at ~ 12:30 today. No apparent reason. Only
light on was a cold box fault.
Restarted in parallel cold return mode. |
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Fri Apr 27 10:10:07 2007, Doug Preddy, Normal Running, Solenoid Cold
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| Solenoid cold, power leads cold. Alarm handler started. |
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Mon Apr 26 07:48:46 2004, Doug Preddy, Quench Recovery, Series mode
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| Switching over to series mode. |
Tue Jul 15 08:47:13 2008, Doug Preddy, Normal Running, Screen grab of normal running 
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| Solenoid was recovered on Sunday July 13. The power leads started to ripple slightly this morning, so I cycled HIC142. No real change. |
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Thu May 19 15:05:31 2005, Doug Preddy, Maintenance, STA 120 replaced
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The turbine 2 speed indicator control box STA 120 has been replaced with a
newer style Jaquet controller. This is similar to the ones used in the
ISAC helium liquifier. See attached photos for set up parameters. These
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Thu Aug 10 08:33:44 2006, Doug Preddy, Normal Running, Running low on helium
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Temperture okay, but there are fluctuation in the power leads. PIC229 is
trying to charge. The buffer tank pressure is just >0 psi. I will lower the
liquid level to 40% to allow some helium to boil off into the buffer tank. |
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Fri Jul 28 20:39:40 2006, Doug Preddy, Quench Recovery, Restarting refrigerator
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Solenoid quenched at about 6:00 tonight.
I restarted the compressor, then the cold box and turbines. When cold box
was at 25K I started flow to the solenoid in parallel cold return. |
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Fri Apr 27 10:32:07 2007, Doug Preddy, Quench Recovery, Reset quench relay logic box
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The quench relay logic controller was not functioning correctly. It showed
a "Trip" light and no other lights. I cycled the power to the controller
and it now seems to be working properly. This did cause a quench and I am
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Wed Dec 10 15:44:58 2008, Doug Preddy, Maintenance, Repairs to solenoid power supply
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Klaus and company pulled the ramp rate card out of the solenoid power supply. Operational checks were done and the rate switch was cleaned. The card was
reinserted and the ramp rate was checked. The power supply seems to ramp at a proper rate in all positions. ***Note*** The output voltage of the power
supply is proportional to the ramp rate. The faster the ramp rate the higher the output voltage. |
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Tue Jun 29 14:59:46 2004, Willy Andersson, Normal Running, Removed jumper on vacuum controller.
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Tuesday 14:55
Removed jumper on back of PIC 901. This jumper should be off during
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Mon Apr 18 09:52:11 2005, Doug Preddy, Maintenance, Relays replaced
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The following relays have been replaced in the Sulzer control panel:
K341, K379, K132, K324A, K314, K125, K127, K133, K252, K227, K233, K238,
K239, K245, K246.
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Sat Jul 26 01:06:04 2008, Doug Preddy, Quench Recovery, Refrigerator in series mode
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| Switched to series mode. Solenoid ~8K, starting to build liquid. |
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Fri May 26 14:34:24 2006, Doug Preddy, Start Up, Ready to run
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Solenoid is cold, liquid level is 35%, power leads cold and seem stable.
Added one bottle helium to buffer tank. Pressure is 7 psi.. |
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Wed Oct 4 18:10:18 2006, Willy Andersson, Start Up, Quick check on system
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System in good // warm return mode, temps coming down nicely. BCP2 cryopump
does not look too healthy, temperature is just over 20K, very close to low
set point.
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Mon Sep 13 10:55:25 2004, Doug Preddy, Shut Down, Quench and shutdown
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The solenoid quenched on powerlead temps this morning at 10:00. It is
warming up and the power leads are >200K.Isolating and purging the coldbox
is not very useful now, so I am shutting the system down. |
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Tue Jul 19 18:09:56 2005, Willy Andersson, Quench Recovery, Quench II
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Machine trip just as I was exiting the TRIUMF gate. QRL said cold box fault
as did red lite on compressor. At cold box panel all turbine red lites were
on and compressed air failure lite was on. But there was no problems with
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Wed May 30 11:27:32 2007, Doug Preddy, Quench Recovery, Problems recovering
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Various start up problems :
MV51 stuck open. Finally got it closed by hitting the valve with a hammer.
Vacuum is bad in cold box as MV902 tripped closed.
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