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    Senior Member JohnDoe2's Avatar
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    One of two cooling pumps has failed on the International Space Station, NASA

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    Space station suffers cooling problem; crew safe

    Space station suffers cooling problem; crew safe

    Michael Winter, USA TODAY8:04 p.m. EST December 11, 2013

    NASA engineers determining whether problem with ammonia flow-control valve may require space walk to fix.


    (Photo: NASA via AP)

    In a situation described as urgent but not an emergency, NASA engineers worked Wednesday to determine what caused one of the International Space Station's two cooling systems to shut down.

    Cooling functions were rerouted to the working system after a flow-control valve apparently failed in a loop carrying ammonia along the outside of the station, making it too cold, said NASA Public Affairs Officer Brandi Dean. All life-support and other critical systems were protected and working normally.


    "The crew's in no danger at all," she said.


    Some non-critical systems were shut down, but none of the science being conducted aboard the station was affected, she said.


    Engineers are evaluating whether the problem is hardware- or software-related and "will take all the time necessary" before deciding whether a space walk is required to fix it, Dean said.


    "It might just require a software upgrade," she said.


    In August 2010, astronauts made three spacewalks to repair a broken ammonia coolant pump.


    Wednesday, the six astronauts and cosmonauts of Expedition 38 spent the day preparing for upgrades and training for the capture of the commercial cargo craft Cygnus with the station's robotic arm Dec. 21.

    The probe, made by Orbital Sciences, will carry several experiments, including oneto help make spacecraft more fireproof.

    http://www.usatoday.com/story/tech/s...oblem/3992607/

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