[Dog Gone]

Do you have any idea how long the ISS can last in a decaying orbit without getting a boost from a Shuttle?

[RightWhale]

how long the ISS can last in a decaying orbit without getting a boost from a Shuttle?

The Russian supply modules provide not only station supplies but the orbital correction motor.

[Movemout]

"Do you have any idea how long the ISS can last in a decaying orbit without getting a boost from a Shuttle? "

I'm not sure of the interval but I am in error that the shuttle is the only means to do the boost. Progress cargo vehicles from Russia are adequate to the job. The only problem is that there aren't enough such vehicles to adequately address the job except in the near term.

[Dave S]

Do you have any idea how long the ISS can last in a decaying orbit without getting a boost from a Shuttle?

The ISS does its own burns. The shuttle and the Soyuz flights only bring it supplies, personnel, and construction assemblies. They dont move it. Three astronauts are there now. They deal with the ISS. I would be more concerned with resupplying them than worrying about the damn thing coming down.