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User name Humensky
Log entry time 14:40:13 on July 23,1999
Entry number 23505
This entry is a followup to: 23486
keyword=loop 2 helium pressure went low; okay now
About 12:45 the loop 2 D2 fill bottle, fill target, and exhaust pressures went below their LOW limit. Apparently this was a result of opening the loop 1 JT valve from 7.0 to 7.9 earlier to cool the top of loop 1. The top of loop 1 temperature had fallen to 60.4K, and the loop 2 temperatures were falling as well. Kathy McCormick said is okay for top of loop 1 to be warm, so closed the loop 1 JT valve again to 7.25 at 12:56. Immediately loop 2 pressures moved back above LOW limit. They are currently sitting at ~20.2. Top of loop 1 is back up to 104.1K.