DescriptionAEC-71-9103 THE 800-TON ALLOY STEEL VESSEL (almost seven stories high) for the Commonwealth Edison Company's Quad-Cities nuclear power station, was shipped about 660 miles by barge along the Ohio and Mississippi Rivers from the Babcock & Wilcox fabrication plant at Mount Vernon, Indiana. Steam produced in the reactor vessel will spin a turbine-generator. Quad-Cities station will consist of two 809 MWe. Nuclear units scheduled for service in 1971 and 1972, Credit: Commonwealth Edison Company