Work continues on the Shuttle’s External Tank GUCP

This photo collection shows the work that is being done on the Ground Umbilical Carrier Plate (GUCP), on space shuttle Endeavour’s external fuel tank. Workers have removed the 7-inch quick disconnect to change out seals in the internal connection points. The GUCP is the overboard vent to the pad and the flare stack where the vented hydrogen is burned off.

A leak of hydrogen at the location during tanking June 12 for the STS-127 mission caused the mission to be scrubbed at 12:26 a.m. June 13.

(Above) Aworker checks the area on the Ground Umbilical Carrier Plate, or GUCP, where the 7-inch quick disconnect was removed.

(Above) A KSC worker holds the removed the 7-inch quick disconnect from the Ground Umbilical Carrier Plate, or GUCP, on space shuttle Endeavour’s external fuel tank.