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Forum:	Space Shuttles - Space Station
Topic:	ISS Expedition 45: US (33) spacewalk (11/6/15)

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<table border=0 cellpadding=0 cellspacing=0 width="600"><TR><td bgcolor="#000000"><TABLE BORDER=0 cellpadding=4 border=0 cellspacing=1 WIDTH="100%"><TR bgcolor="#660000"><TD COLSPAN=2><CENTER><FONT SIZE="2" COLOR="#ffffff" FACE="sans-serif">T O P I C     R E V I E W</font></CENTER></TD></TR><TR bgcolor="#494949"><TD valign=top><FONT SIZE="2" FACE="sans-serif">Robert Pearlman</FONT></TD><TD><FONT SIZE="2" FACE="sans-serif"><blockquote><font size="+0"><B>Astronauts complete 190th station spacewalk</B></font><P><div align="justify">Expedition 45 crewmembers Scott Kelly and Kjell Lindgren conducted their second spacewalk outside the International Space Station (ISS) on Friday (Nov. 6), successfully restoring the original configuration of a cooling system and returning the ammonia used as coolant to the desired levels in both the prime and backup systems.<P>The 7 hour and 48 minute spacewalk, which began at 5:22 a.m. CST (1122 GMT) ended at 1:10 p.m. CST (1910 GMT).<P><center><iframe width="400" height="225" src="https://www.youtube.com/embed/FBboATdhxww" frameborder="0" allowfullscreen>

The two astronauts achieved most of the tasks set out for them, but in a departure from the plan, they ran out of time to cinch and cover a spare radiator known as the Trailing Thermal Control Radiator. The radiator, which Lindgren retracted earlier in the spacewalk, was fully redeployed and locked into place in a dormant state.

The radiator had been deployed during a November 2012 spacewalk by astronauts Sunita Williams and Aki Hoshide as they tried to isolate a leak in the port p6 truss' cooling supply by re-plumbing the system to the back-up radiator. The leak persisted and was subsequently traced to a different component that was replaced during a spacewalk in May 2013.

Friday's spacewalk was the 190th EVA in support of the International Space Station. U.S. and Russian crewmembers have now logged a total of 1,192 hours and 4 minutes working outside the orbital outpost.

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