With the Elektron-VM O2 (oxygen) generator currently off, a one-hour cabin air refresh was to be performed by the FE-1 from Progress 27P storage (SrPK) if required.
CDR Whitson conducted the periodic (every two weeks) 10-min inspection of the RED (Resistive Exercise Device) canister cords and accessory straps as well as the canister bolts for re-tightening if required.
Malenchenko completed today's routine maintenance of the SOZh system (Environment Control & Life Support System, ECLSS) in the SM, including ASU toilet facilities systems/replaceables.
Working off his 'time permitting' discretionary job list, Yuri performed the daily 20-min. IMS maintenance, updating/editing its standard 'delta file' including stowage locations, for the regular weekly automated export/import to its three databases on the ground (Houston, Moscow, Baikonur).
At ~8:45am EST, the crew conducted a teleconference with the Shuttle crew of STS-122/1E, scheduled for launch on 2/7.
At ~9:40am, Peggy, Dan and Yuri tagged up with EVA specialists at MCC-H to discuss final arrangements for tomorrow's EVA-14 spacewalk.
Spending time in the Airlock (A/L) for final preparations for EVA-14, Peggy Whitson and Dan Tani -
Configured the DCS-760 digital camera and flash attachment to be taken outside,
Recharged three batteries for the EVA EMU-prebreathe period, to be installed in the EVA photo flash unit and EVA camera just prior to the spacewalk (when off station power),
Prepared the A/L EL (Airlock Equipment Lock) for the Campout & spacewalk,
Tagged up with ground specialists at ~9:40am EST for reviewing EVA particulars, and
Underwent the standard pre-EVA PMC (Private Medical Conference) via S- & Ku-band audio/video.
Yuri prepared three Russian 'Pille-MKS' radiation dosimeters, recorded their dosages and equipped each of the two EMUs (Extravehicular Mobility Unit) with a radiation sensor (A0309/CDR & A0310/FE-2). (A third sensor, A0308, was placed in the SM on the PULT reader for background readings.)
The CDR powered down the ham radio equipment in SM (Service Module) and FGB at ~12:30pm to prevent RF interference with the EMUs during the spacewalk. Peggy also closed the protective Lab science window shutters.
The crewmembers completed their regular 2.5-hr. physical workout program (about half of which is used for setup & post-exercise personal hygiene) on the CEVIS cycle ergometer (CDR, FE-2), TVIS treadmill (FE-1, FE-2), RED resistive exercise device (CDR, FE-2), and VELO bike with bungee cord load trainer (FE-1).
Whitson then transferred the crew's exercise data file to the MEC for downlink, as well as the daily wristband HRM data of the workouts on RED, followed by their erasure on the HRM storage medium (done six times a week).
At ~2:50pm EST, Whitson and Tani began their overnight Campout prebreathe and lockout in the A/L. With METOX (Metal Oxide) canisters for CO2 removal in the A/L, the two spacewalkers performed PBA (Portable Breathing Apparatus) mask prebreathe for denitrogenation, while readying their equipment, then depressed the A/L to 10.2 psi for the campout.
After the 8.5-hr sleep period before the spacewalk, the A/L CL (Crewlock) hatch will be cracked at ~1:00am EST for a hygiene break/with mask prebreathe for Whitson and Tani, after spending the night on 10.2 psi. Around 2:10am, the hatch will be closed again by IV Yuri Malenchenko for EVA preparations in 10.2 psi, followed by EMU purge & prebreath. Afterwards, Yuri will support CL depressurization and EV1 & EV2 will egress (~5:20-5:30am).
CEO photo targets uplinked for today were IPY - Aurora Borealis; Heard Island, S. Indian Ocean (clear weather windows continue to be present in the region of Heard Island at the time of the ISS orbit pass. Looking to the right of track as ISS approached Antarctica. Mapping photography of the island was requested to capture snow and ice extent. The island of Kerguelen may also be visible to the northwest of Heard Island), and Patagonian Glaciers, S. America (this orbit track provided a traverse across the central portion of the Patagonian ranges. Overlapping, nadir mapping frames of glaciers on the western side of the mountains were requested).