 Wed Jul 4 11:13:12 2007, Doug Preddy, Quench Recovery, test
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| This is a test to make sure the e-mail works. |
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Sun Jul 1 16:09:37 2007, Doug Preddy, Normal Running, M9B:DP2 tripped off
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Diffusion pump tripped off and vacuum (and power lead temps) going up. I
had an experimentor cycle HIC 142 at 4:15 this morning. When I got in
today I restarted the pump and it is back to 6.0 x 10-7. Power lead temps
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Tue Jun 19 21:15:41 2007, Doug Preddy, Quench Recovery, Today's quench
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power lead temps caused a quench at 8:30 this morning. Recovery of system
and flow to solenoid was started by 11:00. Solenoid was switched to series
cold at 3:00. Solenoid and power leads were cold at ~6:30. power supply
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Sat Jun 16 15:05:03 2007, Doug Preddy, Normal Running, Solenoid power lead temp problem
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Power lead temps rippling and increasing. I asked an operator to cycle
HIC142. This seems to have fixed the problem (for now). |
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Thu Jun 14 00:10:10 2007, Doug Preddy, Quench Recovery, recovering from earlier quench
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Solenoid quenched on power lead temperature last night at about 6:00. I
restarted flow to the solenoid in parallel cold return. Switched to series
mode and am building liquid. |
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Tue Jun 12 12:48:25 2007, Doug Preddy, Maintenance, added one bottle UHP helium to system
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Thu May 31 11:51:49 2007, Doug Preddy, Quench Recovery, Switched to series mode
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Thu May 31 07:11:05 2007, Doug Preddy, Quench Recovery, switched to parallel cold return
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| switched to parallel cold return earlier this morning. Vacuum is 5 x 10-5. |
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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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Wed May 30 08:38:38 2007, Doug Preddy, Quench Recovery, Solenoid quenched this morning
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Solenoid quenched this morning on power lead temp (I believe).
I restarted it at ~7:00, but the capacity control for the compressor would
not respond. I shut the system back down and checked as many relays as I
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Wed May 16 10:02:35 2007, Doug Preddy, Maintenance, warming up power leads
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Power lead temps have been slowly increasing over the last wekk. I ramped
the solenoid down and am warming the power leads to >80k. |
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Wed May 2 16:28:16 2007, Doug Preddy, Normal Running, Energizing solenoid to 500 amps
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Power supply initially would not ramp up. I exercised the rate control
selector switch and found that the power supply would ramp up at only the
30 minute setting. It is ramping up at a rate of about 60 minutes. |
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Mon Apr 30 09:30:26 2007, Doug Preddy, Normal Running, problems over weekend
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The PLC Limit switch power supply was tripped off on Saturday. I came in
and reset it and restarted all the vacuum systems that had tripped off.
The power leads were found to be warming up. This morning they were at ~
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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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Fri Apr 27 10:16:44 2007, Kevin Trithardt, Quench Recovery, Test
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Don't Panic -- There was no quench. I am testing the e-log.
I have added Kevin's name and e-mail to the M9 e-log. He will be e-mailed
when a quench recovery log is submitted. His name is also included in the
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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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Tue Apr 24 10:21:49 2007, Doug Preddy, Start Up, Started flow to turbines
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| Started flow to turbines at about 10:00 in parallel warm mode. |
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Mon Apr 23 16:31:02 2007, Doug Preddy, Start Up, Started compressor
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| Startewd compressor and purifer today. |
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Fri Apr 20 12:15:12 2007, Doug Preddy, Start Up, remote PLC switch
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I could not control the vacuum devices using EPICS. The buttons could be
pushed, but nothing would respond. The PLC was in local mode. Thumbwheel
to 100, push On/Open button to put it into remote mode. |
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Thu Apr 19 15:18:25 2007, Doug Preddy, Start Up, preparing to start the refrigerator
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| Starting the vacuum systems in the coldbox and solenoid. |