70-TON SHIPPING CASK FOR THE SAVANNAH RIVER PLANT - DESIGN AND FABRICATION

摘要

Several casks externally finned for heat dissipation, with an internal length of 15 feet and weighing about 70 tons, were constructed for off-plant shipment of radioactive material. Basic safety considerations leading to the selection of this type of cask are discussed. Unusual design and fabrication problems, and operating experience with the casks, are described.nThe principal fabrication difficulties were maintaining the required dimensional tolerances in view of the large amount of welding, and producing the desired degree of metallurgical bond between the lead fill and the steel box.