BS EN ISO 9161:2021

This standard BS EN ISO 9161:2021 Uranium dioxide powder. Determination of apparent density and tap density is classified in these ICS categories:

• 27.120.30 Fissile materials and nuclear fuel technology

This document specifies a method of determining the apparent density and tap density of free-flowing uranium dioxide (UO₂) powder which will be used for pelleting and sintering of UO₂ pellets as a nuclear fuel.

This method can be used for different UO₂ powder types including grains, granules, spheres or other kinds of particles. The method can also be applied to other fuel powders as PuO₂, ThO₂ and powder mixtures as UO₂-PuO₂ and UO₂-Gd₂O₃.

This document is based on the principle of using a flowmeter funnel (see 4.1). Other measurement apparatus, such as a Scott volumeter, can also be used.