标准摘要
[中文适用范围]： 本国际标准描述了一种测定UO2、(U,Gd)O2和(U,Pu)O2 pellet中氮含量的方法。核燃料中的氮可能以元素形式存在或以含氮化合物的形式存在。本文所述的技术用于测定总氮含量，不包括分解温度高于2200°C的化合物（最值得注意的是Pu和U的氮化物）。 [外文原描述]： ISO 12799:2015 describes a procedure for measuring the nitrogen content of UO 2 , (U,Gd)O 2 , and (U,Pu)O 2 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 nitrides).
英文名称Nuclear energy — Determination of nitrogen content in UO2, (U,Gd)O2 and (U,Pu)O2 sintered pellets — Inert gas extraction and conductivity detection method