Pyroprocessing is being developed at Korea Atomic Energy Research Institute (KAERI), and in recent years, all process equipment required for integrated processes have been examined in the PyRoprocess-integrated Inactive DEmonstration (PRIDE) facility. Based on the successful operation of a pilot-scale facility, a conceptual design for this scale-up facility was actualized. Implementing a “demonstration-scale” hot cell facility is challenging as it is intended to supersede PRIDE and satisfy the increased requirements of larger-scale facilities. This study focused on an inerting strategy for a larger-scale (demonstration-scale) hot cell facility to achieve conditions equivalent to those in a pilot-scale gas-tight argon cell facility. The study applies the inerting strategy to a demonstration-scale hot cell facility beyond that of the currently existing pilot-scale hot cell facility and performs computational fluid dynamics (CFD) simulation with various flow rates to determine an appropriate approach for inerting the target facility. To this end, practical constraints on the simulation are introduced based on experiences from the existing pilot-scale facility. The results show that the purging flow rate should be accurately predicted, and a variable flow rate should be applied to achieve hot cell inerting effectively. The required purging time and amount of inerting source are essential factors in the larger-scale hot cell facility. The study results can be helpful in the design of large hot cell facilities operated under inert conditions.

中文翻译：

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基于中试规模氩电池设施运行和 CFD 分析经验的示范规模热电池设施惰化策略

韩国原子能研究所 (KAERI) 正在开发高温处理，近年来，集成工艺所需的所有工艺设备都已在 PyRoprocess 集成非活性演示 (PRIDE) 设施中进行了检查。在中试设施成功运行的基础上，实现了该扩大设施的概念设计。实施“示范规模”的热室设施具有挑战性，因为它旨在取代 PRIDE 并满足更大规模设施日益增长的要求。这项研究的重点是针对更大规模（示范规模）热室设施的惰性化策略，以实现与中试规模气密氩气室设施相同的条件。该研究将惰化策略应用于示范规模的热室设施，超出了目前现有的中试规模的热室设施，并使用各种流速执行计算流体动力学 (CFD) 模拟，以确定用于惰化目标设施的适当方法。为此，根据现有中试规模设施的经验，引入了对模拟的实际限制。结果表明，应准确预测吹扫流速，并应采用可变流速以有效实现热室惰化。所需的吹扫时间和惰性源的数量是大型热室设备的重要因素。研究结果有助于设计在惰性条件下运行的大型热室设施。