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Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Uranium Dioxide Powders and Pellets
1.1 These test methods cover procedures for the chemical, mass spectrometric, and spectrochemical analysis of nuclear-grade uranium dioxide powders and pellets to determine compliance with specifications.
1.2 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.3 The analytical procedures appear in the following order:
| Sections |
| |
Uranium by Ferrous Sulfate Reduction in Phosphoric Acid and Dichromate Titration Method | 2 |
Uranium and Oxygen Uranium Atomic Ratio by the Ignition (Gravimetric) Impurity Correction Method | 3 |
Carbon (Total) by Direct Combustion-Thermal Conductivity Method | 2 |
Total Chlorine and Fluorine by Pyrohydrolysis Ion-Selective Electrode Method | 3 |
Moisture by the Coulometric, Electrolytic Moisture Analyzer Method | 8 – 15 |
Nitrogen by the Kjeldahl Method | 16 – 23 |
Isotopic Uranium Composition by Multiple-Filament Surface Ionization Mass Spectrometric Method | 4 |
Spectrochemical Determination of Trace Elements in High-Purity Uranium Dioxide | 5 |
Silver, Spectrochemical Determination of, by Gallium Oxide Carrier D-C Arc Technique | 5 |
Rare Earths by Copper Spark-Spectrochemical Method | 2 |
Impurity Elements by a Spark-Source Mass Spectrographic Method | 2 |
Surface Area by Nitrogen Absorption Method | 24 – 30 |
Total Gas in Reactor-Grade Uranium Dioxide Pellets | 2 |
Thorium and Rare Earth Elements by Spectroscopy | 2 |
Hydrogen by Inert Gas Fusion | 3 |
Uranium Isotopic Analysis by Mass Spectrometry | 2 |
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International StandardDetails, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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