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Evaluating Advanced Fuel Cycle Proliferation Resistance Dynamics using Isotopic Characterization Coupling

机译:使用同位素表征耦合评估先进的燃料循环扩散阻力动力学

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A method for enhancing nuclear fuel cycle proliferation resistance (PR) assessment through the direct coupling of nuclear materials depletion and decay analysis is presented in this paper. This direct coupling of nuclear materials analysis with PR evaluation affords new avenues of PR evaluation, including the evaluation of the cycle-level sensitivity to factors such as reactor type, fuel enrichment, and fuel burnup, all of which result in changes to materials properties which "cascade" throughout the system. This analysis can be useful to identifying the conditions under which nuclear energy systems show a heightened PR sensitivity, warranted further characterization. This paper extends prior work in the coupling technique; in addition to making use of a more sophisticated material attractiveness evaluation and a stage weighting sensitive to the material mass flow of the system, further categories of systems are evaluated. A demonstration analysis is applied to three classes of fuel cycles across varying parameters: "open" cycles consisting of no actinide recycle, "modified open" cycles with limited actinide recycling, and "fully closed" cycles in which all actinides are recycled as fuel. While the Fuzzy Logic Barrier Model developed at NC State shall be used as a demonstration platform for this effort, this technique can be applied to enhance many models for fuel cycle PR assessment.
机译:本文提出了一种通过直接耦合核材料的损耗与衰变分析来增强核燃料循环扩散阻力(PR)评估的方法。核材料分析与PR评估的直接结合提供了PR评估的新途径,包括对诸如反应堆类型,燃料富集和燃料燃烧等因素的循环水平敏感性的评估,所有这些都会导致材料特性的变化,整个系统的“级联”。这项分析对于确定核能系统显示出更高的PR敏感性,需要进一步表征的条件可能是有用的。本文扩展了耦合技术的现有工作。除了利用更复杂的材料吸引力评估和对系统的材料质量流量敏感的工作台权重之外,还评估了其他类别的系统。对不同参数的三类燃料循环进行了演示分析:不包含act系元素循环的“开放”循环,有限的act系元素循环的“改良开放”循环以及所有act系元素均作为燃料循环使用的“完全封闭”循环。虽然将在NC State开发的模糊逻辑屏障模型用作此工作的演示平台,但该技术可用于增强许多用于燃料循环PR评估的模型。

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