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1. 发明授权

US5414742A Leak-detection system and method for detecting a leaking container 失效
标题翻译：泄漏检测系统和泄漏容器检测方法
公开(公告)号：US5414742A
公开(公告)日：1995-05-09
申请号：US150710
申请日：1993-11-10
申请人： Leonard P. Hornak , Ralph W. Tolino , Robert B Salton
发明人： Leonard P. Hornak , Ralph W. Tolino , Robert B Salton
IPC分类号： G21C17/07 , G21C17/00
CPC分类号： G21C17/07 , G21Y2002/201 , G21Y2004/302 , G21Y2004/40
摘要： Leak-detection system and method for detecting a leaking container. The system includes an enclosure defining a cavity therein surrounding the container, which container may be a nuclear fuel rod having fission products leaking through a breach in the exterior surface of the fuel rod. The fission products are capable of adhering to the exterior surface of the fuel rod as the fission products leak through the breach in the fuel rod. A radiation detector is in communication with the cavity for detecting the fission products leaking through the breach. Moreover, a gas injector is in communication with the cavity for injecting a multiplicity of carrier gas bubbles into the cavity to remove any fission products adhering to the exterior surface of the fuel rod and to carry the fission products removed thereby to the radiation detector. In this manner, the detector detects the leaking fission products even though they may tend to adhere to the exterior surface of the fuel rod. In addition, an elevator is connected to the fuel assembly for elevating the fuel assembly in the cavity, so that the external pressure acting against the exterior surface of the fuel rods is reduced in order to relieve the internal pressure in the fuel rods. As the fuel assembly is elevated, any fission products tending to "hide-out" in the fuel rods expand and migrate through the breach. As the fission products migrate through the breach, they are carried by the carrier gas bubbles to the radiation detector where they are detected by the radiation detector. In this manner, otherwise undetectable leaking fuel rods become detectable.
摘要翻译：泄漏检测系统和泄漏容器检测方法。该系统包括围绕容器限定空腔的外壳，该容器可以是具有通过燃料棒的外表面中的破裂泄漏的裂变产物的核燃料棒。当裂变产物通过燃料棒中的破裂泄漏时，裂变产物能够附着在燃料棒的外表面上。辐射探测器与空腔通信，用于检测通过漏气泄漏的裂变产物。此外，气体注入器与空腔连通，用于将多个载气气体注入空腔中以除去粘附到燃料棒的外表面的任何裂变产物，并将从其移除的裂变产物携带到辐射探测器。以这种方式，检测器检测泄漏的裂变产物，即使它们可能倾向于附着到燃料棒的外表面。此外，电梯连接到燃料组件以将燃料组件升高到空腔中，从而降低了作用在燃料棒的外表面上的外部压力，以便减轻燃料棒中的内部压力。随着燃料组件的升高，燃料棒中倾向于“隐藏”的任何裂变产物都会通过破裂扩展和迁移。当裂变产物通过裂缝迁移时，它们被载气气体携带到辐射检测器，在那里它们被辐射检测器检测到。以这种方式，否则不可检测的泄漏的燃料棒变得可检测。

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