1555 -1635 hrs. local -> To and from Y-mid Recent conditions -> 60F - 75F days, Dewar ~40% full vapor pressure 14 psi, LLCV 18% open [Executed nominal procedure as was practiced for 48 hour over-fill intervals] LN2 at exhaust after 32 min 30 seconds with LLCV bypass 1/2 turn open and exhaust check valve bypass open Next scheduled over-fill to be Monday, April 4th before 4pm local. NOTE: Need to revisit agreement between Dewar's local mechanical level gauge and value indicated by CDS. Also, recommend adopting new default for LLCV bypass X turns open for new 72 hour over-fill interval (something more open than previous default of 1/2 turn open).
After seeing that it took 30 minutes to get liquid out and given the warm weather I called the control room and had Jim raise the liquid level control valve to 20% from the existing 18%. The next web snapshot showed that the exhaust pressure had risen to 1 psi (from .7).