| 摘要 |
<p>A vessel (10) for the shipment of uranium hexafluoride includes a cylindrical wall closed by pair of approximately semi-ellipsoidal heads welded to form a sealed container. A service valve (30) is located in one end. The valve (30) is covered by a removable, watertight valve protection cover assembly (14). The vessel also includes a test port by means of which the integrity of the valve protection cover assembly (14) may be tested after the cylinder (10) has been filled with uranium hexafluoride and the valve protection assembly (14) has been installed. The valve protection assembly (14) is shaped so that it fits within the envelope of the standard 30B cylinders. The distal end of the valve protection assembly is recessed from a plane defined by the open end of the surrounding chime by at least one half inch. Accordingly, the assembly (14) fits within an overpack already approved by the NRC and used by shippers of uranium hexafluoride.</p> |
