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Waspie_Dwarf

Space Station: 1st Repair Spacewalk

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Station Astronauts Conducting First Pump Replacement Spacewalk

Expedition 38 Flight Engineers Rick Mastracchio and Mike Hopkins are working outside the International Space Station Saturday for the first in a series of spacewalks to replace a degraded ammonia pump module associated with one of the station's two external cooling loops that keeps both internal and external equipment cool.

› Watch live on NASA TV

During the spacewalk, which began at 7:01 a.m. EST and is slated to last about six and a half hours, the two spacewalkers will focus on disconnecting a degraded pump module from Loop A of the station’s external Active Thermal Control System to prepare it for its removal and replacement with a spare during a second spacewalk on Monday. If necessary a third spacewalk would occur on Christmas day to finalize the installation of the replacement pump module.

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Spacewalkers Remove Degraded Ammonia Pump

Expedition 38 Flight Engineers Rick Mastracchio and Mike Hopkins wrapped up a 5-hour, 28 minute spacewalk outside the International Space Station at 12:29 p.m. EST Saturday, completing the first in a series of excursions aimed at replacing a degraded ammonia pump module associated with one of the station's two external cooling loops that keeps both internal and external equipment cool.

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NASA Begins Series of Spacewalks to Fix Coolant Pump on ISS

Expedition 38 astronauts Rick Mastracchio and Mike Hopkins ventured outside the space station on Dec. 21, for the first in a series of spacewalks to remove and replace a faulty coolant pump module. The pump is associated with one of the station's two external cooling loops, which circulate ammonia outside the station to keep both internal and external equipment cool.

The previously planned mission of Orbital Sciences' Cygnus spacecraft has been moved to no earlier than mid-January. The postponement will allow ample time for the station crew to focus on repairing the pump module, which stopped working properly on Dec. 11.

Credit: NASA

Source: NASA - Multimedia

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Space Station Crew Removes Ammonia Pump; Next Spacewalk Set for Tuesday

Expedition 38 Flight Engineers Rick Mastracchio and Mike Hopkins wrapped up a 5-hour, 28-minute spacewalk outside the International Space Station at 12:29 p.m. EST Saturday, completing the first in a series of excursions aimed at replacing a degraded ammonia pump module associated with one of the station's two external cooling loops that keeps both internal and external equipment cool.

A second spacewalk to install a replacement pump module, originally planned for Monday, is now scheduled for Tuesday.

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