From ISS On-Orbit Status Report for 16/08/2010:
Stage EVA-17 by FE-2 Tracy Caldwell-Dyson & FE-4 Doug Wheelock was completed successfully in 7 hours 20 minutes, fully accomplishing its objective of installing the spare ETCS (External Thermal Control System) Loop A PM (Pump Module) plus additional tasks. The PM has been checked out and is functioning nominally. Loop A will be fully in service later this week. This was the third contingency spacewalk to replace the Loop A ammonia pump.
During the excursion, Doug (EV-1) & Tracy (EV-2), supported by FE-5 Fyodor Yurchikhin as IV (Intravehicular crewmember) plus FE-6 Shannon Walker & CDR Alexander Skvortsov on the SSRMS (Space Station Remote Manipulator System):
• Installed the spare PM mechanically.
• Mated & opened associated fluid QDs (Quick Disconnects).
• Successfully performed electrical & data continuity checks plus bump-start test (by MCC-H, verifying pump functionality).
• Re-coupled the Starboard & Port CETA carts.
• Cleaned up spare PM/S1/CETA (Crew Equipment Translation Aid) cart.
• Cleaned up the SSRMS by removing the APFR (Articulating Portable Foot Restraint) to enable SSRMS walkoff.
• Cleaned up tethers at S1 Truss.
• Configured the CETA cart to allow for WS-8 (Worksite-8) ops.
• Cleaned up/Ingressed the A/L (Airlock).
[EV-1 & EV-2 began their "campout" last night in the US A/L with hatch closure and depressurization of the CL (Crew Lock) from 14.7 to 10.2 psi at ~7:55 PM GMT for 70 minutes of mask prebreathe with O2 (oxygen). Following the usual hygiene break/with mask prebreathe for Tracy & Doug this morning at ~6:35 AM to 7:45 AM GMT, the A/L hatch was closed again by Shannon & Fyodor for EVA preps in 10.2 psi, followed by EMU purge and prebreathe in the EMUs. Afterwards, with CL depressurization and EV-1/EV-2 switching to suit power, EVA-17 began at 10:20 AM GMT, ~35 minutes ahead of timeline. It ended at 5:40 PM GMT, lasting 7 hours 20 minutes. It was the 150th spacewalk for ISS assembly & maintenance, the 14th this year, and the 242nd for US astronauts, with a total time of 944 hours 24 minutes.]
Before the EVA, Shannon:
• Verified closure of protective window shutters in Lab, JPM and Cupola.
• Completed the IV (Intravehicular) portion of the EVA "inhibit pad", i.e., the list of temporary external deactivations in support of the EVA.
• Set up the Lab RWS (Robotic Workstation) and DOUG (Dynamic Onboard Ubiquitous Graphics) peripherals with the SSC-8 (Station Support Computer-8) T61p laptop, to support SSRMS ops.
• Operated the SSRMS, "flying" Doug during the EVA.
During the spacewalk, Alexander assisted Shannon on the SSRMS, and Fyodor worked with her in supporting the Campout, prebreathe, EVA prep, EVA inhibit pad ops. & post-EVA activities.
Fyodor also configured the internal RS (Russian Segment) STTS communications connections for the EVA.
After ingress from the EVA, Tracy, Doug, Fyodor & Shannon completed initial post-EVA activities in the A/L, including:
• Doffing backpacks, harnesses, tethers and EMUs.
• Inspecting & taking photography of the EMU gloves.
• Taking some photos of broken threads on the MLI (Multi-Layer Insulation) of the SCU (Service & Cooling Umbilical) connector of Tracy's EMU.
• Deconfiguring the A/L after the EVA.
• Reconfiguring STTS communications in the RS.
• Downlinking spacewalk camera imagery.
• Downlinking the glove photographs for analysis.
• Restowing the NH3 (ammonia) masks & NH3 decontamination kit in the FGB.