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*International Space Station Status Report #06-23*
*2 p.m. CDT, Friday, May 5, 2006*
*Expedition 13 Crew*

Completing their first month in space, Expedition 13 Commander Pavel 
Vinogradov and Flight Engineer Jeff Williams eased into normal station 
activities this week.

Most of the week was focused around routine maintenance and inspections. 
Williams completed checks of the refrigerated centrifuge, updated the 
inventory system and took samples of potable water for routine testing. 
He also changed the cooling water used in the U.S. spacesuits to ensure 
that the pumps work and to prevent microbial growth in the water tanks.

Vinogradov did similar jobs in the station's Russian segment – 
completing an inspection of the pressure hull in the Zvezda living 
quarters, performing maintenance of the ventilation system in Zvezda and 
testing emergency vacuum valves in the Atmosphere Purification System.

On Wednesday, the crew updated onboard laptop computers. Williams began 
to install new software on the Medical Equipment Computer, but stopped 
to allow ground specialists to troubleshoot some difficulties he 
encountered. The problem was resolved and the task will be rescheduled 
for Williams. Vinogradov installed and tested new software on a Russian 

Both crew members spent time packing unneeded gear inside the ISS 
Progress 20. The 20th Progress to visit the station is docked to the 
Pirs compartment and will be jettisoned from the complex in mid-June to 
burn up in the atmosphere. Russian flight controllers also fired the 
newer ISS Progress 21 cargo craft's engines for about six and a half 
minutes on Thursday to boost the station’s altitude by about 1.7 miles. 
The Progress 21 is docked at the aft docking port of the Zvezda module.

Williams kicked off the first Expedition 13 session of the Pore 
Formation and Mobility Investigation this week. It is an experiment that 
studies bubbling that occurs in weightlessness as liquids cool and turn 
into solids. It provides insight into how materials solidify in space 
and may benefit similar processes used in industry on Earth. The 
experiment is performed in the Microgravity Science Glovebox in the 
Destiny Lab.

The crew took time this week to reach out to more than 1,500 students, 
teachers and NASA personnel participating in a Space Day educational 
event at NASA's Goddard Space Flight Center, Greenbelt, Md. The event 
was part of a larger program highlighting NASA Explorer Schools as well 
as a collaboration between NASA and America Online (AOL).

Williams also spoke to students in the Inuit community of Kuujjuaq, 
Canada, via HAM radio. More than 340 students attend the school, which 
is located 900 miles north of Montreal at the base of Ungava Bay.

The next station status report will be issued on Friday, May 12, or 
earlier if events warrant. For more about the crew's activities and 
station sighting opportunities, visit:

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