This story is from November 3, 2012

Sunita fixes leak in 6-hour spacewalk

Indian-American Nasa astronaut Sunita Williams along with another cosmonaut on Friday troubleshot an ammonia leak in the International Space Station’s cooling system, accomplishing the chief objective of their marathon six-hour excursion outside the orbiting lab.
Sunita fixes leak in 6-hour spacewalk
Indian-American Nasa astronaut Sunita Williams along with another cosmonaut on Friday troubleshot an ammonia leak in the International Space Station’s cooling system, accomplishing the chief objective of their marathon six-hour excursion outside the orbiting lab.
HOUSTAN: Indian-American Nasa astronaut Sunita Williams along with another cosmonaut on Friday troubleshot an ammonia leak in the International Space Station’s cooling system, accomplishing the chief objective of their marathon six-hour excursion outside the orbiting lab.
Williams and Japanese space flyer Akihiko Hoshide ventured on Thursday outside the space station at 1229 GMT (1759 IST) and just a little more than five hours later, they had reconfigured some coolant lines and deployed a spare radiator, isolating the leak.

"Suni and Aki, heartfelt congratulations to you," Nasa astronaut Mike Fincke, who helped walk the astronauts through their tasks from mission control at the agency’s Johnson Space Center in Houston, said.
"We accomplished just about everything we set out to do today. A big, huge congratulations to you guys on the ground for putting this together," Williams responded. Each of the space station’s eight huge solar panels has its own associated power system, and circulating ammonia helps cool this gear down. The leak, which Nasa and its space station partners first noticed in 2007, has the potential to affect one of these power channels if it’s not fixed.
Today’s Spacewalk, a crucial step in that process was slated to last about 6 1/2 hours, and it proceeded pretty much on schedule. By 0128 hrs IST, both astronauts had re-entered the space station through its airlock, and the spacewalk was officially over nine minutes later. At the start of the spacewalk , Williams and Hoshide made their way over to the port side of the station’s backbone-like truss. They rejiggered some lines in the affected coolant system and installed a spare radiator . Nasa officials hope this stops the leak, which they suspect may be coming from the old radiator.
End of Article
FOLLOW US ON SOCIAL MEDIA