Soyuz Damage May Delay Space Station Trip
SeaDour writes "As if the failed oxygen generator on the International Space Station wasn't bad enough, rumor has it that the planned launch of a Russian Soyuz capsule to change crews onboard the station may be delayed due to a mishap during ground testing. Apparently one of the small explosive bolts, used to separate sections of the capsule during landing, prematurely exploded, which means the bolts may all have to be inspected for defects. Russian space officals haven't officially confirmed any delay of the October 9 launch date, but I'm sure it's something the two astronauts on the station are thinking about as they repressurize the station with reserve air supplies."
Well, if you'd RTFA you'd learn that they have a spare oxygen generator on the space station that can be installed as a replacement if necessary, plus they have a bunch of spare parts they can use to repair the one that is giving trouble. They have over a month's supply of chemical oxygen generators, and they have oxygen supplies in the Soyuz that is docked. So they have lots of redundancy here.
There has to be some limit to the amount of redundancy they have in any one system, as they only have so much weight and volume available, but they don't seem to have cut any corners in the area of O2.
Kevin Horton