5362

MODEL NATICK IRRADIATOR. THE PACKAGE IS A CYLINDRICAL, STEEL-ENCASED, LEAD-FILLED WELDMENT 29-3/4" OD BY 58" HIGH, ENCLOSED IN A DOUBLE-WALLED IMPACT ADN FIRE SHIELD (OVERPACK) 57" BY 45" BY 90" HIGH MOUNTED ON A PALLET 57" BY 45". THE STEPPED CAVITY IS 9.56" ID BY 8-1/4", 12" ID BY 27-1/2" AND 20" ID. BY 11-5/8". THE SOURCE HOLDER (DRAWER ASSEMBLY) IS 9.48" OD BY 46.625" WITH 9-1/2" SHIELDING ON BOTTOM AND 12-1/8" ON TOP. A LEAD SHIELDED CASK INSERT ASSEMBLY 20" OD BY 9.52" ID BY 12.12" IS INSTALLED AT THE TOP OF THE CASK AND THE ENTIRE ASSEMBLY IS HELD IN PLACE WITH A 1" THICK STEEL LID SECURED WITH TWELVE, 1" BOLTS. A CASK DRAIN LINE IS SEALED WITH A PIPE PLUG. A 39" OD LAMINATED PLYWOOD PLUG FILLS THE SPACE BETWEEN THE TOP OF THE CASK AND THE OVERPACK. PLYWOOD WILL BE POSITIONED AROUND THE CIRCUMFERENCE OF THE IRRADIATOR FOR SUPPORT. THE CASK WEIGHS 16,000 LBS.