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首页> 外文会议>Safety Related Issues of Spent Nuclear Fuel Storage; NATO Security Through Science Series C: Environmental Security >TECHNICAL ISSUES OF WET AND DRY STORAGE FACILITIES FOR SPENT NUCLEAR FUEL
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TECHNICAL ISSUES OF WET AND DRY STORAGE FACILITIES FOR SPENT NUCLEAR FUEL

机译：核燃料干式和湿式储存设备的技术问题

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摘要

The satisfactory removal of residual heat from spent fuel assemblies (SFAs) in wet and dry storage facilities is an all-important safety provision. To this end, heat-mass transfer processes should be studied in detail for both normal and accident conditions. Examples of modeling and experiments carried out to this end at the State Polytechnic University and the Central Boiler-Turbine Research and Design Institute in St. Petersburg, Russia, are presented. They include: mathematical modeling of nonstationary accident processes (like pool drying in a wet storage facility); experimental studies of mixed convection in a small-scale pool model, and natural convection in a simulated bundle of spent fuel rods; experiments on heat transfer and pressure drops in vertical SFA casks, and on natural convection in horizontal casks (simulating SFA transport conditions); and, finally, experiments and modeling of air flows and heat-mass transfer in various dry-storage configurations. rnThe utility of such work is in the possibility of defining the temperature regimes of components in storage facilities, including critical ones like fuel-rod cladding and cask seals, for normal and upset conditions. Also described are ways to improve heat-mass transfer modeling, thus augmenting heat transfer from SFAs and allowing improved storage capacity.
机译：从湿式和干式存储设施中的乏燃料组件（SFA）中去除残留热量是一项至关重要的安全措施。为此，应针对正常情况和事故情况详细研究热质传递过程。为此，将介绍在国立工业大学和俄罗斯圣彼得堡的中央锅炉涡轮研究设计院进行的建模和实验的示例。它们包括：非平稳事故过程的数学建模（例如湿存储设施中的水池干燥）；小规模池模型中混合对流和模拟乏燃料棒束中自然对流的实验研究；在垂直SFA桶中进行传热和压降实验，并在水平桶中进行自然对流实验（模拟SFA运输条件）；最后，进行各种干燥存储配置中的气流和热质传递的实验和建模。 rn这种工作的实用性是可以定义存储设备中组件的温度范围，包括正常和不正常使用条件下的关键组件，例如燃料棒包壳和容器密封件。还介绍了改善热质传递模型的方法，从而增加了来自SFA的热传递并提高了存储容量。

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