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ID Date Author Operational Mode Subject Text   266   Wed Dec 10 15:44:58 2008 Doug Preddy Maintenance Repairs to solenoid power supply Klaus and company pulled the ramp rate card out of the solenoid power supply. Operational checks were done and the rate switch was      265   Wed Dec 10 15:41:04 2008 Doug Preddy Shut Down shuttting down solenoid shuttting down solenoid for winter shutdown.      264   Wed Nov 5 16:33:52 2008 Doug Preddy Normal Running sbplc light out On main menu the sbplc light was black. All vacuum systems looked good, but there was no control of any device. Jane reset the      263   Sun Oct 5 18:54:27 2008 Doug Preddy Quench Recovery Solenoid Quench ~16:30 Restarted compressor and flow to coldbox by 18:30      262   Sun Oct 5 11:12:48 2008 Doug Preddy Normal Running M9B:V1 interlocks and a IOC crash M9A:V1 was removed this shutdown. It's "in" limit is required to allow M9B:V1 to be opened. I have bypassed the interlocks on M9B:V1      261   Fri Sep 26 09:50:18 2008 Doug Preddy Quench Recovery started flow in parallel cold return mode        260   Fri Sep 26 09:45:18 2008 Doug Preddy Quench Recovery Solenoid quenched at 7:50 Compressor on. Turbines started. Vacuum system recovering.      259   Fri Sep 26 09:44:25 2008 Doug Preddy Maintenance Water flow interlock restored yesterday      258   Tue Sep 9 15:04:23 2008 Doug Preddy Maintenance Jumpered interlock for diff pump water flow Jumpered interlock for diff pump water flow in Proteus box.      257   Thu Sep 4 10:02:55 2008 Doug Preddy Normal Running ramping down solenoid Solenoid power supply will be turned off for Fall shutdown.      256   Sun Aug 24 06:45:14 2008 Doug Preddy Quench Recovery switch to series mode        255   Sat Aug 23 17:02:38 2008 Doug Preddy Quench Recovery Solenoid quenched The solenoid quenched this afternoon at ~12:30. The compressor shut down. Fault lights were cold box trip. Restarted the compressor      254   Sat Jul 26 01:29:21 2008 Doug Preddy Quench Recovery power leads ops will monitor liquid level. When it's at 60% they will come down and open the power lead valve. When the temperature ripples      253   Sat Jul 26 01:06:04 2008 Doug Preddy Quench Recovery Refrigerator in series mode Switched to series mode. Solenoid ~8K, starting to build liquid.       252   Fri Jul 25 21:48:15 2008 Doug Preddy Quench Recovery another quench System was stable and solenoid ramped up at 4:00 today. At about 7:30 it tripped off again. I came in and restarted the compressor      251   Thu Jul 24 16:28:50 2008 Doug Preddy Quench Recovery power bump There was a power bump at ~15:00 today. All mseon hall cooling water went off. Compressor tripped. Main magnet went off.  Restarted      250   Tue Jul 15 08:47:13 2008 Doug Preddy Normal Running Screen grab of normal running Solenoid was recovered on Sunday July 13. The power leads started to ripple slightly this morning, so I cycled HIC142. No real      249   Sun Jul 13 20:17:24 2008 Doug Preddy Other Helium refrigerator problems In early June the helium compressor was running with the solenoid cold. A vavlve broke off at the suction side of the compressor. The      248   Mon Apr 28 09:03:22 2008 Doug Preddy Normal Running power leads warmed during weekend The power lead temperatures suddenly rose on Sunday morning. No rippling occured before the woarm up.  I shut flow off this morning      247   Thu Apr 17 13:52:25 2008 Doug Preddy Start Up switched to series mode at 9:30 this morning switched to series mode at 9:30 this morning. Added two bottles of helium gas.  Started flow to power leads.

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