Abstract The proliferation resistance (PR) of an inert matrix fuel (IMF) in the transuranic nuclear fuel cycle (NFC) of a high temperature gas cooled reactor is evaluated relative to the uranium and plutonium mixed-oxide (MOX) NFC of a light water reactor using PRAETOR code and sixty-eight input attributes. The objective is to determine the impacts of chemical stability of IMF and fuel irradiation on the PR. Specific material properties of the IMF, such as lower plutonium content, carbide ceramics coating, and absence of 235U, contribute to enhance its relative PR compared to MOX fuel. The overall PR value of the fresh IMF (an unirradiated direct use material with a one-month diversion detection timeliness goal) is nearly equal to that of the spent MOX fuel (an irradiated direct use nuclear material with a three-month diversion detection timeliness goal). Final results suggest a reduced safeguards inspection frequency to manage the IMF.

中文翻译：

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使用 PRAETOR 代码对 HTGR 超铀燃料循环的抗扩散性评估

摘要 相对于轻水的铀钚混合氧化物 (MOX) NFC 评估了惰性基质燃料 (IMF) 在高温气冷堆的超铀核燃料循环 (NFC) 中的抗扩散性 (PR)。反应器使用 PRAETOR 代码和 68 个输入属性。目的是确定 IMF 的化学稳定性和燃料辐照对 PR 的影响。与 MOX 燃料相比，IMF 的特定材料特性，例如较低的钚含量、碳化物陶瓷涂层和不含 235U，有助于提高其相对 PR。新鲜 IMF（具有 1 个月转移检测时效目标的未辐照直接使用材料）的总体 PR 值几乎等于 MOX 乏燃料（具有 3 个月转移检测时效目标的辐照直接使用核材料）的总体 PR 值）。最终结果表明，降低了管理 IMF 的保障监督检查频率。