Standard NBN EN ISO 12799:2019
Nuclear energy - Determination of nitrogen content in UO2, (U,Gd)O2 and (U,Pu)O2 sintered pellets - Inert gas extraction and conductivity detection method (ISO 12799:2015)
Status
:
Active
Publication date
:
7/2019
Languages
:
EN/FR
ICS
:
27.120.30 Fissile materials
Summary :
ISO 12799:2015 describes a procedure for measuring the nitrogen content of UO2, (U,G
d)O2, and (U,P
u)O2 pellets. Nitrogen in nuclear fuel may be present either as elemental nitrogen or chemically combined in the form of nitrogenous compounds. The technique described herein serves to determine the total content of nitrogen excluding those compounds whose decomposition temperature is above 2 200 °C (most notably Pu and U nitride
s).
d)O2, and (U,P
u)O2 pellets. Nitrogen in nuclear fuel may be present either as elemental nitrogen or chemically combined in the form of nitrogenous compounds. The technique described herein serves to determine the total content of nitrogen excluding those compounds whose decomposition temperature is above 2 200 °C (most notably Pu and U nitride
s).