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*International Space Station Status Report #05-40*
*8 p.m. CDT, Thursday, Aug. 18, 2005*
*Expedition 11 Crew*

More milestones met on the International Space Station this week, with 
the Expedition 11 crewmembers completing a spacewalk just days after the 
Commander became the most experienced space traveler in history.

The 4 hour 58 minute spacewalk by Commander Sergei Krikalev and Flight 
Engineer John Phillips was the 62nd EVA in support of ISS assembly and 
maintenance, the 34th conducted from the Station itself, the 16th from 
the Pirs docking compartment.

The first job once Krikalev and Phillips opened the hatch on Pirs at 
2:02 pm CDT was retrieval of one of three canisters from the Biorisk 
experiment, a biomedical study of the impact of spaceflight on 
bioorganisms. Biorisk was installed on the Pirs module by Expedition 10 
spacewalkers Leroy Chiao and Salizhan Sharipov in January of this year; 
the other canisters will be retrieved on later EVAs.

Next the spacewalkers moved to the large diameter section of the Zvezda 
module and prepared two experiment payloads for removal. MPAC, the 
Micro-Particles Capturer, uses aerogels and foam to collect natural and 
human-made orbital debris outside ISS; its companion experiment pallet, 
SEED (Space Environment Exposure Device), exposes samples of possible 
spacecraft materials like paint, insulation and lubricants, to the 
environment of low Earth orbit. Matroshka is a biomedical experiment 
collecting data on radiation absorption by crewmembers on long-duration 
missions, especially when spacewalking.

 From there Krikalev and Phillips moved to the aft of Zvezda to install 
a backup television camera to assist in docking of the European Space 
Agency’s Automated Transfer Vehicle, a new unmanned supply craft for ISS 
slated to make its first flight next year. While in the area the 
spacewalkers photodocumented the condition of an experiment called 
Kromka, which measures residue from the firing of the nearby jet 
thrusters, and exchanged sample containers in the materials exposure 
experiment SKK, the Russian initials for replaceable cassette container.

By the time the spacewalkers gathered together Matroshka, MPAC and SEED 
and their cluster of tools and transported them all back for stowage 
inside Pirs, they were about 45 minutes behind the timeline for today’s 
spacewalk. That delay, combined with an estimated two hours it would 
take to complete the last planned task—relocation of a Strela cargo 
crane adapter from Zarya to Pressurized Mating Adapter 3 on the Unity 
node—caused Russian mission managers to decide to forego the last 
planned task until a later spacewalk. The hatch to Pirs was closed at 7 
p.m. for an official spacewalk duration of 4 hours, 58 minutes.

Today’s spacewalk was the first in Phillips’ career and the eighth for 
Krikalev, who collected 36 hours and 10 minutes spacewalking experience 
on seven EVAs during his two missions to the Russian space station Mir.

On Tuesday, at 12:44 a.m. CDT, Krikalev's total time in space surpassed 
the record of 747 days, 14 hours and 14 minutes set by Cosmonaut Sergei 
Avdeyev. Krikalev flew two long-duration flights to the Mir space 
station, two Space Shuttle missions, and was Flight Engineer on the 
first Expedition to ISS before this flight as Commander of Expedition 11.

The Russian Vozdukh carbon dioxide removal system has been shut down 
since last Thursday, and Russians specialists are working on a recovery 
plan. Meanwhile, the Carbon Dioxide Removal Assembly in the U.S. portion 
of the Station, which has been scrubbing the Station’s air since 
Vozdukh’s shut down, failed early this morning due to a stuck check 
valve, the latest instance of a known and understood problem. It is 
being managed back to operation by flight controllers in Houston, who 
reported to the crew that carbon dioxide levels on board ISS are well 
below the levels that would pose any danger. Plans call for Krikalev to 
do troubleshooting on Vozdukh starting tomorrow.

Information on the crew's activities aboard the Space Station, future 
launch dates, as well as Station sighting opportunities from anywhere on 
the Earth, is available on the Internet at:


The next Station status report will be issued on Thursday, Aug. 25, or 
earlier if events warrant.

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