 Mon Sep 24 15:08:41 2007, Doug Preddy, Start Up, Started cool down this morning
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The vacuum in the cold box was good on Friday 0.0 X 10-4. Let it pump over
the weekend. Added two bottles of UHP helium to system Friday.
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Tue Sep 25 07:34:04 2007, Doug Preddy, Start Up, PIC229 to 11 bar
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| adjusted turbine speeds and HIC104 to maintain their values. |
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Wed Sep 26 08:52:46 2007, Doug Preddy, Start Up, switched to parallel cold return
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Thu Sep 27 07:41:15 2007, Doug Preddy, Start Up, Solenoid cold
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Solenoid cold and in series mode. 50% liquid level. Starting flow to
powerleads. |
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Tue Oct 2 13:02:37 2007, Doug Preddy, Normal Running, PLC problems
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While downloading new code for 2A PLC the M9 and M15 vacuum systems were
shut off. This is due to the two systems piggybacking onto the 2A PLC.
When M9 Epics came back up there was no controls. Eventually I reset the
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Fri Oct 5 10:25:43 2007, Doug Preddy, Quench Recovery, Unknown quench 2
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Kevin and I were at the Sulzer panel when the system quenched 2. No
obvious reasons. Restarted the system. |
Fri Oct 5 13:25:41 2007, Doug Preddy, Quench Recovery, funny graph 
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There was a fluctuation of the positive lead temp with no flow going to
the power leads. |
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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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Tue Oct 9 13:16:44 2007, Doug Preddy, Quench Recovery, switched to series mode
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Wed Oct 24 12:04:06 2007, Doug Preddy, Maintenance, power lead and cryopump regeneration
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Regenerating M9B:CP2 as temperature was up to almost 20k.
Shut off flow to power leads to allow them to warm up. The positive and
negative temps were beginning to creep up.
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Thu Nov 8 09:28:53 2007, Doug Preddy, Quench Recovery, started compressor
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And started flow to coldbox,solenoid in parallel warm return.
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Fri Nov 9 07:37:44 2007, Doug Preddy, Quench Recovery, switched to series mode
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| switched to series mode. |
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Fri Nov 9 14:50:03 2007, Doug Preddy, Quench Recovery, Solenoid cold
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Solenoid cold. Added two bottles of helium. Allowing to stablize. Will
ramp power supply in half an hour. |
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Fri Nov 9 16:24:33 2007, Doug Preddy, Maintenance, 2APLC Died
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thumb wheel panel all lite up. 2APLC rebooted by Klara (Thanks). M9BMP2 not
pumping properly. Edi is looking at it. |
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Fri Nov 9 18:56:20 2007, Doug Preddy, Maintenance, System Ready to Run
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| M9BMP2 was replaced. Vacuum good. Solenoid is ramped up. :) |
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Mon Nov 19 02:58:44 2007, Doug Preddy, Quench Recovery, Solenoid quenched on power lead over temperature
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I received a page at 1:30 this morning. The power lead temperatures were
climbing. Cycling CV142 did not fix the problem. The solenoid quenched at
1:50.
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Mon Nov 19 04:30:47 2007, Doug Preddy, Quench Recovery, switched to series mode
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Fri Nov 23 08:35:37 2007, Doug Preddy, Normal Running, power lead problems
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About 10 hours ago the power lead temperatures started to fluctuate and
climb.
I cycled CV142 and the Temps have dropped and stablized. |
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Fri Nov 23 08:41:45 2007, Doug Preddy, Normal Running, screen grab of powerlead temps
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Mon Nov 26 09:45:43 2007, Doug Preddy, Normal Running, power lead problems
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Power lead temperatures were rippling yesterday afternoon. I asked one of
the operators to cycle CV142.
The temperatures were rippling again this morning, so I cycled CV142. |