Abstract

ISO 12800:2017 gives guidelines on the determination of the specific surface area of as-fabricated uranium dioxide powder by volumetric or gravimetric determination of the amount of nitrogen adsorbed on the powder, and can be applied to other similar materials, e.g. U3O8, UO2-PuO2 powders, and other bodies with similar surface areas, e.g. powder granules or green pellets, provided that the conditions described are fulfilled. Modifications using other adsorbing gases are included. The method is relevant as long as the expected value is in the range between 1 m2/g and 10 m2/g.

Begin

2025-01-20

WI

00430134

Planned document number

DIN EN ISO 12800

Project number

06236872

Responsible national committee

NA 062-07 FBR - Board of the Technical Department Radiation protection, nuclear technology and fusion technology  

Responsible european committee

CEN/TC 430 - Nuclear energy, nuclear technologies, and radiological protection  

Responsible international committee

ISO/TC 85/SC 5/WG 1 - Analytical methodology in the nuclear fuel cycle  

draft standard

Nuclear fuel technology - Guidelines on the measurement of the specific surface area of uranium dioxide and plutonium dioxide powders by the BET method (ISO/DIS 12800:2026); English version prEN ISO 12800:2026
2026-01
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previous edition(s)

Nuclear fuel technology - Guidelines on the measurement of the specific surface area of uranium oxide powders by the BET method (ISO 12800:2017); German version EN ISO 12800:2019
2019-09

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