The BX265 insulation or SLA has been removed from the L02 feed line bracket that is attached to the external tank.

The BX265 foam insulation and super lightweight ablator, or SLA, cork insulation has been removed from the L02 feed line bracket that is attached to the external tank. Also visible is the adjacent LO2 feed line. The BX265 foam insulation will later be reapplied without the SLA. The tank is scheduled to fly on Space Shuttle Discovery in October 2007 on mission STS-120. Discovery's crew will add the module Harmony that will serve as a port for installing additional international laboratories. Harmony will be the first expansion of the living and working space on the complex since the Russian Pirs airlock was installed in 2001. The mission also will move the first set of solar arrays installed on the station to a permanent location on the complex and redeploy them. Photo credit: NASA/Jim Grossmann