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ID Date Author Operational Mode Subject Text   220   Mon Sep 24 15:08:41 2007 Doug Preddy Start Up Started cool down this morning 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      221   Tue Sep 25 07:34:04 2007 Doug Preddy Start Up PIC229 to 11 bar adjusted turbine speeds and HIC104 to maintain their values.      222   Wed Sep 26 08:52:46 2007 Doug Preddy Start Up switched to parallel cold return        223   Thu Sep 27 07:41:15 2007 Doug Preddy Start Up Solenoid cold Solenoid cold and in series mode. 50% liquid level. Starting flow to  powerleads.      224   Tue Oct 2 13:02:37 2007 Doug Preddy Normal Running PLC problems While downloading new code for 2A PLC the M9 and M15 vacuum systems were  shut off. This is due to the two systems      225   Fri Oct 5 10:25:43 2007 Doug Preddy Quench Recovery Unknown quench 2 Kevin and I were at the Sulzer panel when the system quenched 2. No  obvious reasons. Restarted the system.      226   Fri Oct 5 13:25:41 2007 Doug Preddy Quench Recovery funny graph There was a fluctuation of the positive lead temp with no flow going to  the power leads.      227   Tue Oct 9 12:58:22 2007 Doug Preddy Quench Recovery Solenoid Quench 2 Refrigeration sytem shut off at ~ 12:30 today. No apparent reason. Only  light on was a cold box fault.       228   Tue Oct 9 13:16:44 2007 Doug Preddy Quench Recovery switched to series mode        229   Wed Oct 24 12:04:06 2007 Doug Preddy Maintenance power lead and cryopump regeneration Regenerating M9B:CP2 as temperature was up to almost 20k. Shut off flow to power leads to allow them      230   Thu Nov 8 09:28:53 2007 Doug Preddy Quench Recovery started compressor And started flow to coldbox,solenoid in parallel warm return.      231   Fri Nov 9 07:37:44 2007 Doug Preddy Quench Recovery switched to series mode switched to series mode.      232   Fri Nov 9 14:50:03 2007 Doug Preddy Quench Recovery Solenoid cold Solenoid cold. Added two bottles of helium. Allowing to stablize. Will  ramp power supply in half an hour.      233   Fri Nov 9 16:24:33 2007 Doug Preddy Maintenance 2APLC Died thumb wheel panel all lite up. 2APLC rebooted by Klara (Thanks). M9BMP2 not  pumping properly. Edi is looking at it.       234   Fri Nov 9 18:56:20 2007 Doug Preddy Maintenance System Ready to Run M9BMP2 was replaced. Vacuum good. Solenoid is ramped up. :)      235   Mon Nov 19 02:58:44 2007 Doug Preddy Quench Recovery Solenoid quenched on power lead over temperature I received a page at 1:30 this morning. The power lead temperatures were  climbing. Cycling CV142 did not fix the problem.      236   Mon Nov 19 04:30:47 2007 Doug Preddy Quench Recovery switched to series mode        237   Fri Nov 23 08:35:37 2007 Doug Preddy Normal Running power lead problems About 10 hours ago the power lead temperatures started to fluctuate and  climb.      238   Fri Nov 23 08:41:45 2007 Doug Preddy Normal Running screen grab of powerlead temps        239   Mon Nov 26 09:45:43 2007 Doug Preddy Normal Running power lead problems Power lead temperatures were rippling yesterday afternoon. I asked one of  the operators to cycle CV142.

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