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Solenoid logbook

Fields marked with * are required Entry time: Wed Jan 15 13:33:36 2025 Author*: - please select - Doug Preddy Curtis Ballard Kevin Trithardt David Kishi Experimentor Other Operational Mode: - please select - Normal Running Quench Recovery Start Up Shut Down Maintenance Other Subject*: > 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 > bottle of UHP helium Through purifier. As of 09:45 not yet able > to find Curtis. > > PI229 discharge pressure dropped slightly to 10.45 barA. Set point > is 11 barA. Turbine speeds OK. CV211 is wide open. Energized HIC142 > and set to 0.7 to start flow to powerleads. Up in compressor room > checked purifier. LN2 system running OK. In purifier package flowmeter > looks like oil or brownish spots on inside of rotameter glass. Possible > migration of trapped contaminants after correcting flow arrangement > through purifier. Initially buffer tank circulation flow entered > through AV3 but was corrected to enter through AV5. > > Have 10:00 meeting, system seems stable and should be OK until I can > contact Curtis to top up system with UHP helium through purifier. Encoding: HTML   ELCode   plain   Suppress Email notification Attachment 1:

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