ELOG Solenoid

Solenoid logbook

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Entry time:	Wed Jan 15 13:46:10 2025
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> Got a page from Don Flemming at about 18:50 wondering why the power > lead temperatures were rising. See attachment may5_04_1800.BMP It looked as > though the monitoring signals flat lined for about 2 hours for some reason. > Anyway the powerlead temps were definitely rising. When I arrived HIC142 > was wide open but both power lead flows were down to 65 (on the scale) and > the flowmeter float was vibrating rapidly. LHe heater at 33 %. Buffer > pressure at 10 psig. LIC108 at 54 %. CV147 at 0.45 (HIC141). CV141 at 0.6 > TCI121 in auto mode. > > Closed HIC142 then opened again. Powerlead temps dropped. Opened CV147 > from 0.45 to 0.35 (HIC141) Played with setting of set point of TIC121 and > HIC141 to try to increase excess liquefaction. Reduced shield heat to about > 16%. Difficult to say what is going on with powerleads. Temps had dropped to > good levels but now gradually rising, but very slowly. Hopefully they peak > and level off. Energized solenoid. Cycled HIC142 a few times but temps > would not trend downwards. Leaving it overnight. Doug, please check and > adjust the system as required in the morning. Encoding: HTML ELCode plain Suppress Email notification

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