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*International Space Station Status Report #06-22*
*2 p.m. CDT, Friday, April 28, 2006*
*Expedition 13 Crew*

The 13th crew of the International Space Station this week began 
unloading -- and sank its teeth into -- some of the more than 5,000 
pounds of new supplies that arrived at the complex Wednesday.

The ISS Progress 21 cargo spacecraft, which launched from the Baikonur 
Cosmodrome in Kazakhstan on Monday, docked at the station Wednesday. The 
ship was the first supply shipment for Expedition 13 Commander Pavel 
Vinogradov and Flight Engineer Jeff Williams, who have been in space for 
almost a month.

The spacecraft brought fresh fruit and other foods, gifts from home, 
fuel, water, oxygen, spare parts and science gear. Two Progress cargo 
craft are now docked at the complex. Oxygen supplies from ISS Progress 
20, which arrived in December, continue to be used to replenish the 
cabin air when required. The crew is loading that Progress with trash 
and unneeded equipment. The spacecraft will be jettisoned from the 
complex in mid-June.

Early in the week, Williams replaced a Remote Power Control Module, a 
type of circuit breaker, in the station's Destiny laboratory. The power 
control module had not been functioning for some time, and electricity 
for many lab systems had been delivered via an alternate path. To gain 
access to the worksite for replacement of the component, Williams had to 
disassemble and remove his sleeping compartment. Mission Control 
sequentially powered off many lab systems and lights to facilitate the 
replacement. Williams accomplished all the work ahead of schedule, and 
the new power control module has been functioning well.

Science activities aboard the station during the past week included work 
by Williams with the Capillary Flow Experiment, which is an 
investigation of fluid behavior in weightlessness that may assist in the 
design of future spacecraft. The crew members also completed urine 
collection and notes about their food consumption for an experiment 
studying the formation of kidney stones in weightlessness.

Vinogradov completed routine maintenance of the station's Elektron 
system. It was powered off much of the week and reactivated today. The 
Elektron provides oxygen for the cabin air from water.

Plans for next week include an engine firing to boost the station's 
altitude on Thursday, May 4; continued unloading of the newly arrived 
Progress vehicle; and periodic crew health checks.

The next station status report will be issued on Friday, May 5, or 
earlier if events warrant.

For more about the crew's activities and station sighting opportunities, 

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