ISS Failed Cooling Pump Repair Progress (August 9, 2010)

Posted: August 10, 2010 by Mike Hubbartt in Space Exploration
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by Mike Hubbartt, Copyright 2010, All Rights Reserved.

The recent failure of one of two ammonia cooling pumps for the International Space Station is being addressed by a series of three space walks. Tracy Caldwell Dyson and Doug Wheelock were the astronauts that performed the first space walk last Saturday, which lasted over 8 hours. The second space walk is scheduled to begin at 6:55AM Wednesday 8/10, and the third space walk is scheduled no earlier than Sunday 8/14.

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  1. mikeh2013 says:

    August 11 – Good news! The astronauts were able to remove the jammed ammonia line today, the same line that gave them problems on the first space walk. They are now removing the bad pump and will replace it with a spare during their next spacewalk.

  2. mikeh2010 says:

    August 11, 5:10PM CDT – Success! The defective ammonia pump was removed during the 7.5 hour space walk today. All that is left is attaching one of the backup units, which could be done as soon as next Sunday.

  3. mikeh2013 says:

    Good news. Doug Wheelock and Tracy Caldwell Dyson did another spacewalk on Monday (8/16) and installed the replacement ammonia pump. All indications are that this resolved the cooling problem and the ISS is back to normal.

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