Ehdotuksen tiedot

This document is applicable to fuel fabrication. It gives guidelines on the determination of the specific surface area of as-fabricated uranium dioxide and plutonium dioxide powders by volumetric or gravimetric determination of the amount of nitrogen adsorbed on the powder. The measurement of other uranium oxide powders refers to uranium dioxide, such as UO3 and U3O8. The measurement of MOX(UO2-PuO2) powders refers to plutonium dioxide. When 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 from 1 m2/g to 10 m2/g for uranium dioxide powders, in the range from 0.1 m2/g to 45 m2/g for plutonium dioxide powders.