(John, Chandra, Gerardo, Kyle) 

John, Chandra -> Vented XBM 

Gerardo, Chandra -> Viewport work at WA-1A on XBM (see separate aLOG for details) 

Kyle -> Installed new Bayard-Alpert/Pirani wide range gauge on BSC7 

John, Chandra -> Began XBM pump down 

John, Chandra -> Vented YBM 

John, Chandra, Gerardo -> Viewport work at WA-1B on YBM (see separate aLOG for details)

Kyle -> Installed new Bayard-Alpert/Pirani wide range gauge on BSC8 

Chandra, Kyle -> Began YBM pump down 

Kyle -> Halted pump down of XBM and YBM by closing Turbo Header hand valve, Turbo Safety valve then Turbo inlet Gate Valve -> will resume attended pumping tomorrow 

NOTE: To resume rough down, valves must be opened in reverse sequence to that listed above to prevent pressure drop across Turbo inlet Gate Valve.