9016

MODEL TN-9. A LEAD AND STEEL AND RESIN SHIELDED IRRADIATED FUEL SHIPPING CASKS. THE CASKS APPROX. A RIGHT CIRCULAR CYLINDER 1,718 MM IN DIAMETER AND 5,756 MM LONG. THE CAVITY CONSISTS OF THREE RECTANGULAR, STAINLESS STEEL PRESSURE VESSELS WELDED TO END PLATES AND A CIRCULAR STEPPED TOP FLANGE, SEPARATED BY THIN COOPER PLATES. THE BAYS ARE DIVIDED INTO A TOTAL OF SEVEN SQUARE COMPARTMENTS, 150 X 150 MM AND 4,520 MM LONG. THE MAIN SHIELDING CONSISTS OF 128 MM OF LEAD, 26 MM OF STEEL AND 150 MM OF RESIN. A WET CEMENT LAYER IS LOCATED BETWEEN THE LEAD AND THE OUTER SHELL. RADIAL COPPER FINS ARE WELDED TO THE OUTER SHELL AND COVER THE SURFACE OF THE CASK BETWEEN EACH END DRUM. THE LID IS A WELDED STAINLESS STEEL SHELL CONTAINING LEAD AND RESIN SHIELDS. THE PRESSURE VESSELS ARE CLOSED AND SEALED BY SIXTEEN, 1-1/4-INCH DIAMETER BOLTS AND TWO SILICONE RUBBER OR VITON O-RINGS LOCATED WITH IN RECESSED GROOVES ON THE TOP FLANGE. EACH EXTREMITY OF THE CASK IS SURROUNDED BY CIRCULAR STAINLESS STEEL DRUMS REINFORCED BY RADIAL GUSSET PLATES AND FILLED WITH BALSA WOOD. A DISK SHAPED IMPACT LIMITER, CONSTRUCTED OF CARBON STEEL AND BALSA WOOD IS FASTENED TO EACH DRUM WITH FOUR, 1-1/4-INCH BOLTS. THE VENT AND DRAIN LINES WHICH PENETRATE THE INNER CAVITY ARE EQUIPPED WITH POSITIVE CLOSURES. IN ADDITION, ALL ACCESS PORTS ARE PROTECTED BY IMPACT LIMITERS. TRUNNIONS ARE USED FOR LIFTING & TIE DOWN OF PKG. THE WEIGHT OF THE PACKAGE IS APPROX. 36,000 KG. (79380 LBS). SEE CERTIFICATE**