The second spacewalk in the Discovery mission has ended

Among other things, Drew was involved in evaporating the remaining ammonia from the broken pump of the cooling system that he and Bowen moved on the first spacewalk on Monday to a new storage location

Astronauts Steve Bowen and Alvin Drew finished a six hour and 14 minute spacewalk last night, during which they were engaged in maintenance work outside the International Space Station.

Among other things, Drew was involved in evaporating the remaining ammonia from the broken pump of the cooling system that he and Bowen moved on Monday's first spacewalk to a new storage location. The broken pump is now ready to be returned to Earth in a future space mission to check the source of the fault. This mission was requested by the control center after its people noticed ammonia ice floating around the facility, but said that there was no danger to the astronauts' lives and that not a single drop had stuck to the astronauts' space suits.

Later, Drew installed lighting on the auxiliary trailer that allows to bring equipment for the astronauts outside the station and also installed a liquid pipe for the evaporator. Bowen installed covers on the joint of the robotic arm to protect the camera from wear and tear that could be caused by the use of the engines of spacecraft visiting the station.
The two also removed the insulation from the avionics unit in the No. 4 logistics carrier and removed the sun visor from the video camera lens.