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ISS Quest Joint Airlock

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AKA: JAM;Quest. Status: Operational 2001. Gross mass: 6,000 kg (13,200 lb). Height: 6.00 m (19.60 ft). Diameter: 4.00 m (13.10 ft).

In a series of spacewalks the astronauts moved the oxygen and nitrogen tanks onto the airlock exterior. The six metric ton Airlock consisted of two cylinders of four meters diameter and a total length six meters. The Airlock could be pressurized by the externally-mounted high pressure oxygen-nitrogen tanks, and was to be the sole unit through which all future EVAs were to take place. (Until that point, all EVA entries/exits had been through a Russian module in ISS, with non-Russians having to wear Russian space suits).