 Wed May 5 09:59:10 2004, Doug Preddy, Quench Recovery, started flow to power leads
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Started flow to power leads.
TIC121 into auto mode |
Wed May 5 07:55:37 2004, Doug Preddy, Quench Recovery, Solenoid quenched on power lead temp 
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Solenoid quenched on power lead temp. I ran down and managed to recover it
with minimal temp rise in the solenoid. Coil temps are falling, liquid is
building. No flow to the power leads yet. |
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Tue May 4 11:26:38 2004, Doug Preddy, Normal Running, power leads
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Power cycled HIC 142 with solenoid power at 400 amps. Flows > 240mm and
temps have dropped. |
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Tue May 4 11:20:57 2004, Doug Preddy, Normal Running, power leads going unstable
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power lead ripples increased over last couple of days. They are quickly
dieing out now and the temps are startint to increase. PL flow is down to
<180mm. I will power cycle HIC 142. |
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Fri Apr 30 01:53:34 2004, Doug Preddy, Quench Recovery, switched to parallel cold
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Thu Apr 29 23:43:15 2004, Doug Preddy, Quench Recovery, Starting flow to solenoid
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Solenoid quenched due to power leads at 9:00 tonight. Restarted flow in
parallel warm mode. |
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Wed Apr 28 09:30:09 2004, Doug Preddy, Normal Running, power leads again
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Same story as yesterday. Ripples dieing out, flows down to <200 mm, temps
increasing. Turned HIC 142 down to 0.4 then back up to 0.75. Temps dropped
quickly. Then turned HIC 142 to 0 and back to 0.75. Temps dropping, flow >
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Tue Apr 27 09:03:18 2004, Doug Preddy, Normal Running, Power leads
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Power leads are being monitored with the strip tool graphs. I saw the temps
go from having a ripple to almost no ripple, but starting to increase in
temperature. I also noticed that the flow had dropped to 200 mm. I power
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Mon Apr 26 08:12:30 2004, Doug Preddy, Quench Recovery, Power leads flow
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Throttled back the LHe in until the power leads started to warm. My goal is
to flow "warm" gas (hopefully 80K) through the leads to drive any frozen
impurities out. |
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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. |
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Sun Apr 25 21:41:00 2004, Willy Andersson, Quench Recovery, Trip on PL Temp.
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Got pager call at 16:20 this afternoon. Solenoid had tripped on PL
temperature. Arrived at about 17:00. Did a print screen of the striptool
graph and solenoid screen. See files Prtscrn1_april25_2004.doc and
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Fri Apr 23 09:19:30 2004, Doug Preddy, Normal Running, CV211
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PIC 229 was down to 10.8 bar this morning. PIC 229 was trying to open CV211
to charge the system. I realized that in restoring the control to CV211 I
did not get the wire into the connector properly. Went back up to the
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Thu Apr 22 10:39:16 2004, Doug Preddy, Normal Running, Yesterday
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Added two bottles of UHP helium to buffer tank.
Had no liquifation rate, so optimized Ti121 and HIC141 . Finally put TIC121
into manual mode at 0.65. Power lead fluctuation died out and liquid
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Wed Apr 21 09:57:59 2004, Willy Andersson, Start Up, System status
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Buffer tank pressure is down to about 6 psig. Too low to keep up
with liquefaction requirements to build LHe level. Doug Preddy
requested that I help Curtis Ballard top up system with new
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Wed Apr 21 08:16:18 2004, Doug Preddy, Start Up, switch to series mode
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| Switched to series mode. |
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Wed Apr 21 06:48:31 2004, Doug Preddy, Start Up, JT bypass closed
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| Closed cv155 |
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Wed Apr 21 06:39:17 2004, Doug Preddy, Start Up, over night
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Changed to parallel cold mode at 9:30.
At about 4:30 the city water chiller was turned on. The air compressor had
also tripped off. It was reset and restarted. |
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Tue Apr 20 07:33:03 2004, Doug Preddy, Start Up, PIC229 at 11bar
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| PIC229 at 11 bar. Changed strip tool to 15 sec increments. |
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Tue Apr 20 07:06:41 2004, Doug Preddy, Start Up, morning day 2
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| Temps in solenoid are equalling out. Increasing PIC229 to 11 bar. |
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Mon Apr 19 15:06:49 2004, Doug Preddy, Start Up, Started turbines
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Purifier run over the weekend. Both LN2 dewars empty, but purifier cold.
Disabled CV211 and flowed all charge gas through purifier. Started turbine
at 11:00am. set strip tool to monitor temps. Started M9BCP2. Pumped out
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