Mission Specialists Robert Behnken and Nicholas Patrick have completed the task of connecting the ammonia loops. They now will spend the remaining time outfitting Tranquility. Behnken has installed insulation on the keel pin. He next will install four trunnions that connected Tranquility to the shuttle while it was in transit. He also will set up the centerline camera on the nadir, or Earth-facing, port of Tranquility and release the launch locks that held the petals of the port’s berthing mechanism in place during launch. The cupola will be moved to that port the following day.
Patrick will install a vent valve and eight handrails on Tranquility. The vent valve will be part of the atmospheric control and resupply system, and the handrails will be used by spacewalkers to move along the exterior of the node.
Behnken will wrap up his duties by removing tape on five gap spanners that act as a bridge for astronauts between areas on Tranquility without handrails.