Orbiter Processing Facility 1 technicians re-install the three fuel cells in space shuttle Discovery's mid-body.

Inside Orbiter Processing Facility-1 at NASA’s Kennedy Space Center in Florida, technicians re-install the three fuel cells in space shuttle Discovery’s mid-body.

The fuel cells were removed and drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Discovery’s mid-body and have been purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery. Discovery is being prepared for display at the Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Dimitri Gerondidakis