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IssueReasonWhat to do?
If the Dewar level indicators have large fluctuationsLevel sensor tubes are contaminatedFixing dewar level indicator
FNAL Approved procedure: https://seaquest-docdb.fnal.gov/cgi-bin/sso/ShowDocument?docid=10401
Coldheads blocking alarmPossible contamination
or cold heads have been running so long without any intake gHe for a while
  1. Resolving Liquefier Blocking Alarm when Liquefier is on Liquefy Mode
  2. Resolving Liquefier Blocking Alarm when Liquefier is on Idle Mode







Useful Information

  1. The volume of an outside gHe tank: 1600 cubic feet (V = 45306.95 L)
  2. 100 slm rate on Magnet FC is equivalent to ~ 192 LHe liters per day (i.e. assuming both LQ A and B are running)


Useful Contact Information


  1. Cryofab : https://www.cryofab.com/contact
    Call +1 (800) 426-2186 and ask for extension #14 (Mr. Tam)
    Tell this serial number and he will recognize us
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