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)

Comment end date 2026-03-12

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Project stage codes

1. Decision on WI Proposal

2. Projektas

3. Viešoji apklausa

From 2026-01-11 till 2026-03-12

4. Closure of enquiry

5. Submission to Formal Vote

Organisation

CEN Europos standartizacijos komitetas

ICS

27.120.30 - Fissile materials and nuclear fuel technology

ForeignTC'S

CEN/TC 430

Number of comments

Comment start date

2026-01-11

Scope

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.

Relations

Pakeis

prEN ISO 12800