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    • 20. 发明授权
    • Method and apparatus for shipping substantially pure uranium hexafluoride
    • 用于运输基本上纯的六氟化铀的方法和装置
    • US06765221B2
    • 2004-07-20
    • US10358945
    • 2003-02-05
    • Gary ElderThomas F. DoughertyTrevor M. Rummel
    • Gary ElderThomas F. DoughertyTrevor M. Rummel
    • G21F512
    • A63H3/26G21F5/002G21F5/06G21F5/12G21Y2002/304G21Y2002/305G21Y2002/306G21Y2002/40G21Y2004/303G21Y2004/40
    • Substantially pure uranium hexafluoride is shipped in a conventional overpack. A cylinder includes a vessel with a cylindrical sidewall A head permanently affixed to the sidewall closes one end of the vessel. A valve controls the flow of matter into and out of the vessel. A sealing surface connected to the vessel surrounds the valve. A cap covers the valve and a pair of seals is located between the sealing surface and the cap. The volume between the two seals, the cap and the sealing surface defines a test volume. A test port connects the test volume and an exterior surface of the vessel, and fasteners press the cap against the sealing surface. A maximum rate of leakage from within the cap to the atmosphere outside the cap is determined by measuring the leakage rate into the test volume with a leak testing apparatus connected to the test port. Thereafter the cylinder is placed in a conventional overpack. The maximum leakage rate is determined using a test apparatus consisting essentially of a vacuum pump, a pressure gauge, a container of known volume, a valve to control the flow of air from the atmosphere into the container which are all adapted to be connected to the test port at the same time, a valve controlling the flow of gas from the container into the test volume, and a valve controlling the flow of gas from the test volume to the vacuum pump.
    • 基本上纯的六氟化铀以传统的外包装运输。 圆柱体包括具有圆柱形侧壁的容器,永久地固定到侧壁的头部封闭容器的一端。 阀控制物质流入和流出容器。 连接到容器的密封表面围绕阀。 盖子覆盖阀门,一对密封件位于密封表面和盖子之间。 两个密封件之间的体积,盖子和密封表面限定了测试体积。 测试端口连接测试体积和容器的外表面,紧固件将盖子压靠密封表面。 通过使用连接到测试端口的泄漏测试设备测量进入测试体积的泄漏率来确定帽内部到帽外大气层的最大泄漏速率。 此后将圆筒放置在传统的外包装中。 使用基本上由真空泵,压力计,已知体积的容器组成的测试装置来确定最大泄漏率,用于控制从大气进入容器的空气流动的阀,所述阀都适于连接到 同时测试端口,控制从容器进入测试体积的气体流量的阀,以及控制从测试体积到真空泵的气体流量的阀。