A series of nondestructive assay measurements were performed before, during, and after localized heating of an industrial standard 12B cylinder of uranium hexafluoride to replicate dose variations previously observed on commercial 30B cylinders. While cylinders represent a closed system, enrichment measurements may be impacted by altered uranium and daughter product distributions due to sublimation. A series of measurements were performed to examine localized heating impacts on dose rates, ratios of uranium and daughter product distributions, and measured ²³⁵U enrichment as calculated by two different approaches. The less complex enrichment meter approaches were found to be more robust and less prone to deviation than isotope ratio approaches such as FRAM, but the impact can be minimized by using observable dose changes to avoid impacted areas.

在对工业标准 12B 六氟化铀钢瓶进行局部加热之前、期间和之后进行了一系列无损检测测量，以复制先前在商用 30B 钢瓶上观察到的剂量变化。虽然钢瓶代表一个封闭系统，但浓缩测量可能会受到因升华而改变的铀和子产物分布的影响。进行了一系列测量以检查局部加热对剂量率、铀和子产物分布的比率的影响，并测量了²³⁵通过两种不同的方法计算的 U 富集。研究发现，与同位素比方法（如 FRAM）相比，不太复杂的富集计方法更可靠且更不容易出现偏差，但可以通过使用可观察到的剂量变化来避免受影响的区域，从而将影响降至最低。