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首页> 外文会议>2002 ASME Pressure Vessels and Piping Conference, Aug 5-9, 2002, Vancouver, British Columbia, Canada >Response of Conventional Ring Closures of Drum Type Packages to Regulatory Drop Tests with Application to the 9974/9975 Package
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Response of Conventional Ring Closures of Drum Type Packages to Regulatory Drop Tests with Application to the 9974/9975 Package

机译：鼓型包装的常规密封环对法规跌落测试的响应及其对9974/9975包装的应用

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摘要

DOT, DOE and NRC Type A and Type B radioactive material (RAM) transport packages routinely use industrial or military specification drums with conventional clamp ring closures as an overpack. Considerable testing has been performed on these type packages over the past 30 years. Observations from test data have resulted in various design changes and recommendations to the standard drum specification and use, enhancing the reliability of the overpack. Recently, performance of the 9975 conventional clamp ring closure design was questioned by the DOE Regulatory Authority. This paper highlights the observations of recent 9974 and 9975 package testing that led to redesign of the 9975, replacing the standard clamp ring closure with a bolted flange closure. In the course of this review and redesign effort, 18 package designs and approximately 100 Hypothetical Accident Condition (HAC) drops of various size and weight drum packages were evaluated. A trend was observed with respect to overpack lid failures for packages utilizing conventional ring closure. Based on this trend, a limit on the ratio of the internal weight to total package weight was identified, beyond which clamp ring closure failure may be expected.
机译：DOT，DOE和NRC的A型和B型放射性物质（RAM）运输包装通常使用带有常规夹紧环封口的工业或军用规格鼓作为外包装。在过去的30年中，已经对这些类型的包装进行了大量测试。从测试数据中观察到的结果导致了各种设计变更以及对标准桶规格和使用的建议，从而提高了外包装的可靠性。最近，美国能源部监管局对9975传统卡环封闭设计的性能提出了质疑。本文着重介绍了最近进行的9974和9975封装测试的观察结果，这些测试导致重新设计了9975，用螺栓固定的法兰盖代替了标准的夹紧环盖。在此审查和重新设计的过程中，评估了18种包装设计和各种大小和重量的桶包装的大约100个假想事故情况（HAC）滴。对于使用常规环闭合的包装，在外包装盖失效方面观察到了趋势。基于这种趋势，确定了内部重量与包装总重量之比的极限，超过该极限，可能会导致夹紧环关闭失败。

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