The Expedition 24 crew had another light-duty day Wednesday as the Loop a cooling system reactivation continued aboard the International Space Station. The reactivation followed Monday’s spacewalk, the third in a series of excursions that began Aug. 7 to remove and replace an ammonia coolant pump module that failed July 31. 
Power restoration to systems affected by the pump module failure is complete and Loop A has been reintegrated back into the station’s thermal control system. The Japanese Kibo laboratory and European Columbus laboratory also have been reconfigured back into the Loop a cooling system.
The station is scheduled to be fully restored to a normal cooling configuration Thursday when Flight Engineer Doug Wheelock disconnects a jumper cable that was hooked up to provide backup cooling for the Russian segment.
Meanwhile, the thrusters of the docked ISS Progress 38 cargo craft fired for nearly 11 minutes at 4:30 p.m. EDT Wednesday to boost the perigee of the station’s orbit by about three statute miles. This will put the complex in the proper position for the arrival of ISS Progress 39 and the departure of Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko aboard Soyuz TMA-18 in September.
Read about the station's Thermal Control System on page 63 of the "Systems" section of the Reference Guide to the International Space Station. View the entire guide here.