Closed GV10 and GV11 (Ski et al. craning scissor lift over VE).  Note GV11 "clanked" atypically when gate cammed closed.  



Started CS purge air compressor*Closed GV1 and GV2*Started Vertex, XBM and YBM QDP80s and Main turbo pumps*Vented Vertex and HAM6 volumes simultaneously (note: new requirement to maintain <0.5 atm pressure difference across HAM6 septum as the result of design flaw awarness-see Mike Z., Dennis C., John W., Albert L.)*Isolated BSC1 annulus ion pump*removed all but (4) door bolts from BSC1 South door