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ISO FDIS 12799

2014 Edition, July 21, 2014

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NUCLEAR ENERGY - DETERMINATION OF NITROGEN CONTENT IN UO2, (U,GD)O2 AND (U,PU)O2 SINTERED PELLETS - INERT GAS EXTRACTION AND CONDUCTIVITY DETECTION METHOD



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Superseded By: ISO 12799

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NOW A PUBLISHED STD * SEE ISO 12799
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Description / Abstract:

This International Standard describes a procedure for measuring the nitrogen content of UO2, (U,Gd)O2, and (U,Pu)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 nitrides).
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