The operating time of the IBR-2 reactor depends on the fuel life. Currently, an IBR-2 run is formed at the cost of adding fresh FAs into the core without any reshuffling of the FA. In spite of its technological simplicity, this approach results in suboptimal fuel use because of high burnup non-uniformity. In the present work we propose optimizing a reactor fuel run by reshuffling FA during the run. This will give more uniform fuel burnup and increase the run time by almost 1/4 while limiting the ultimate burnup as compared with the conventional approach to run formation without reshuffling.

中文翻译：

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IBR-2 运行优化建议

IBR-2 反应堆的运行时间取决于燃料寿命。目前，形成 IBR-2 运行的代价是将新鲜的 FA 添加到核心中，而无需对 FA 进行任何重组。尽管其技术简单，但由于高度的燃耗不均匀性，这种方法会导致次优的燃料使用。在目前的工作中，我们建议通过在运行期间重新调整 FA 来优化反应堆燃料运行。这将提供更均匀的燃料燃烧并将运行时间增加近 1/4，同时与不重新洗牌的运行形成的传统方法相比限制最终的燃烧。