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*International Space Station Status Report #06-36*
*5 p.m. CDT, Thursday, Aug. 3, 2006*
*Expedition 13 Crew*

Space station crewmen Jeff Williams and Thomas Reiter worked quickly 
through scheduled spacewalk tasks Thursday, then completed three 
get-ahead jobs, or extra tasks, and were ready for more. Mission Control 
assigned two more jobs, which the astronauts also completed.

Williams and Reiter wrapped up their productive 5-hour, 54-minute 
excursion and began repressurizing the Quest airlock at 3:58 p.m. EDT.

The astronauts left the airlock in U.S. spacesuits at 9:04 a.m. EDT. 
Station Commander Pavel Vinogradov helped them with spacewalk 
preparations and getting into their suits. It was the first time in more 
than three years a third crewmember had been available for those tasks 
on the orbiting laboratory.

Williams, designated lead spacewalker, or EV1, wore the U.S. spacesuit 
with red stripes. Reiter, EV2, wore the all-white suit.

Astronaut Steve Bowen acted as spacewalk intravehicular officer and 
coached the astronauts from the International Space Station Flight 
Control Room in Houston's Mission Control Center. Williams and Reiter 
quickly got ahead of their timeline. First, they installed the Floating 
Potential Measurement Unit. The device measures the electrical potential 
of the station so procedures can be devised to minimize arcing hazards, 
or the jumping of current from a conductor to a ground, as the station 

Their second job was to install two MISSE containers, or Materials on 
International Space Station Experiment. The suitcase-like containers are 
left open to evaluate the long-term effects of space exposure on a 
variety of materials. The idea is to identify optimal materials for use 
in future spacecraft. MISSE 3 went on one of the high-pressure tanks 
around the crew lock, while MISSE 4 was installed on Quest's outboard end.

The two astronauts then went on to separate jobs. Williams installed a 
controller for a thermal radiator rotary joint on the S1 truss, while 
Reiter replaced a computer on the truss.

Williams then began installing a starboard jumper and spool positioning 
device (SPD) on the S1 truss. Reiter inspected a radiator beam valve 
module SPD site where one device was already installed and installed an 
additional one. He then moved on to install a SPD on a port cooling line 
jumper. The jumpers are designed to improve the flow of ammonia through 
the radiators once that coolant is installed.

Williams began setup for the final major scheduled task, a test of an 
infrared camera designed to detect damage in a shuttle's reinforced 
carbon carbon (RCC) thermal protection. The camera highlights damage by 
showing variations in temperature between clean and damaged RCC test 
sections. Reiter operated the experiment while Williams went on to one 
of the additional tasks.

The first task was installation of a light to help future spacewalkers 
on the truss railway handcart. Williams then removed a malfunctioning 
GPS antenna. After Reiter finished the infrared camera experiment, he 
installed a vacuum system valve on the U.S. laboratory Destiny for 
future scientific experiments.

Mission control came up with additional tasks. Williams moved two 
articulating portable foot restraints to prepare for STS-115 spacewalks 
and then photographed a scratch on the airlock hatch. Reiter went to 
PMA1, a pressurized "corridor", to retrieve and inspect a ball stack, 
which holds hardware during spacewalks. The crew also had additional 
time throughout the spacewalk to photograph the worksites after their 
tasks were complete and then snap pictures of each other at the end. 
With no more quick tasks to add, the spacewalkers re-entered the airlock 
and closed the hatch early.

The next station status report will be issued on Friday, Aug. 11, or 
earlier if events warrant. For more about the crew's activities and 
station sighting opportunities, visit:



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