Abstract We investigated the suitability of thermography for detecting a potential relocation of the inventory of dry storage containers of type CASTOR V/19. We used numerical simulations of the heat transfer in the container to determine the sensitivity of the wall temperature distribution to such changes. We conducted an analysis for three different hypothetical damage cases: a 9 cm compaction of the fuel in all fuel rods of a single fuel assembly, the same compaction in all fuel assemblies and a compaction of all fuel assemblies by 50 %. The analysis shows that the temperature difference between intact case and all three damage cases after 40 years is too low for an accurate detection becoming even lower for longer storage periods. Temporal thermal insulation of the containers may increase the temperature gradients but reducing the spatial resolution.

中文翻译：

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通过壁温场变化检测长期临时储存期间干式储存容器库存的潜在搬迁分析

摘要 我们研究了热成像技术在检测 CASTOR V/19 型干式储存容器库存的潜在搬迁方面的适用性。我们使用容器内传热的数值模拟来确定壁温分布对此类变化的敏感性。我们对三种不同的假设损坏情况进行了分析：单个燃料组件的所有燃料棒中的燃料压实 9 厘米，所有燃料组件的压实相同，以及所有燃料组件压实 50%。分析表明，完整箱子与 40 年后所有三个损坏箱子之间的温差太小，无法准确检测，存放时间越长，温度差甚至越低。