ASTM International - ASTM C799-19
Standard Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Nuclear-Grade Uranyl Nitrate Solutions
| Organization: | ASTM International |
| Publication Date: | 1 July 2019 |
| Status: | active |
| Page Count: | 14 |
| ICS Code (Fissile materials and nuclear fuel technology): | 27.120.30 |
significance And Use:
4.1 Uranyl nitrate solution is used as a feed material for conversion to the hexafluoride as well as for direct conversion to the oxide. In order to be suitable for this purpose, the material must... View More
scope:
1.1 These test methods cover procedures for the chemical, mass spectrometric, spectrochemical, nuclear, and radiochemical analysis of nuclear-grade uranyl nitrate solution to determine compliance with specifications.
1.2 The analytical procedures appear in the following order:
| Sections | |
| Determination of Uranium | 8 |
| Specific Gravity by Pycnometry | 16 - 21 |
| Free Acid by Oxalate Complexation | 22 - 28 |
| Determination of Thorium | 29 |
| Determination of Chromium | 30 |
| Determination of Molybdenum | 31 |
| Halogens Separation by Steam Distillation | 32 - 36 |
| Fluoride by Specific Ion Electrode | 37 - 43 |
| Halogen Distillate Analysis: Chloride, Bromide, and Iodide by Amperometric Microtitrimetry | 44 |
| Determination of Chloride and Bromide | 45 |
| Determination of Sulfur by X-Ray Fluorescence | 46 |
| Sulfate Sulfur by (Photometric) Turbidimetry | 47 |
| Phosphorus by the Molybdenum Blue (Photometric) Method | 55 - 62 |
| Silicon by the Molybdenum Blue (Photometric) Method | 63 - 70 |
| Carbon by Persulfate Oxidation-Acid Titrimetry | 71 |
| Conversion to U
3O8 | 72 - 75 |
| Boron by Emission Spectrography |
A |
| Impurity Elements by Spark Source Mass Spectrography | 77 |
| Isotopic Composition by Thermal Ionization Mass Spectrometry | 78 |
| Uranium-232 by Alpha Spectrometry | 79 - 85 |
| Total Alpha Activity by Direct Alpha Counting | 86 - 92 |
| Fission Product Activity by Beta Counting | 93 - 99 |
| Entrained Organic Matter by Infrared Spectrophotometry | 100 |
| Fission Product Activity by Gamma Counting | 101 |
| Determination of Arsenic | 102 |
| Determination of Impurities for the EBC Calculation | 103 |
| Determination of Technetium 99 | 104 |
| Determination of Plutonium and Neptunium | 105 |
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 6.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Document History
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