DIN EN ISO 9161:2021-04: Uranium dioxide powder. Determination of apparent density and tap density (ISO 9161:2019); English version EN ISO 9161:2021

This document specifies a method for determining the apparent density and tap density of free-flowing uranium dioxide (UO${}_2$) powder used for pelletizing and sintering UO${}_2$ pellets as nuclear fuel. This method can be used for various types of UO${}_2$ powders, including grains, granules, spheres, or other types of particles. The method can also be applied to other fuel powders such as PuO${}_2$, ThO${}_2$, and powder blends such as UO${}_2$-PuO${}_2$ and UO${}_2$-Gd${}_2$O${}_3$. The responsible German standardization body is NA 062-07 FBR "Fachbereichsbeirat Kerntechnik und Strahlenschutz" in the DIN Standards Committee for Materials Testing (NMP).