Significance and Use
4.1 Uranium hexafluoride is a basic material used to prepare nuclear reactor fuel. To be suitable for this purpose the material must meet criteria for uranium content, isotopic composition, metallic impurities, hydrocarbon and halohydrocarbon content. These test methods are designed to determine whether the material meets the requirements described in Specifications C787 and C996.
Scope
1.1 These test methods cover or give reference to procedures for subsampling and for chemical, mass spectrometric, spectrochemical, nuclear, and radiochemical analysis of uranium hexafluoride (UF6). Most of these test methods are in routine use to determine conformance to UF6 specifications in the Enrichment and Conversion Facilities.
1.2 The analytical procedures in this document appear in the following order:
NOTE 1: Subcommittee C26.05 will confer with C26.02 concerning the renumbered section in Test Methods C761 to determine how concerns with renumbering these sections are best addressed in subsequent publications as analytical methods are replaced with stand-alone analytical methods.
Sections
Subsampling of Uranium Hexafluoride
8
Gravimetric Determination of Uranium
9 – 17
Titrimetric Determination of Uranium
18
Preparation of High-Purity U3O8
19
Isotopic Analysis
20
Determination of Hydrocarbons, Chlorocarbons, and Partially Substituted Halohydrocarbons
21 – 27
Determination of Antimony
28
Determination of Bromine
29
Determination of Chlorine
30 – 36
Determination of Silicon and Phosphorus
37 – 43
Determination of Boron and Silicon
44
Determination of Ruthenium
45
Determination of Titanium and Vanadium
46
Spectrographic Determination of Metallic Impurities
47
Determination of Tungsten
48
Determination of Thorium and Rare Earths
49
Determination of Molybdenum
50
Atomic Absorption Determination of Metallic Impurities
51 – 56
Impurity Determination by Spark-Source Mass Spectrography
57
Determination of Boron-Equivalent Neutron Cross Section
58
Determination of Uranium-233 Abundance by Thermal Ionization Mass Spectrometry
59
Determination of Uranium-232 by Alpha Spectrometry
60 – 66
Determination of Fission Product Activity
67
Determination of Plutonium by Ion Exchange and Alpha Counting
68 – 72
Determination of Plutonium by Extraction and Alpha Counting
73 – 80
Determination of Neptunium by Extraction and Alpha Counting
81 – 88
Atomic Absorption Determination of Chromium Soluble In Uranium Hexafluoride
89 – 95
Atomic Absorption Determination of Chromium Insoluble In Uranium Hexafluoride
101 – 102
Determination of Technetium-99 In Uranium Hexafluoride
103 – 110
Method for the Determination of Gamma-Energy Emission Rate from Fission Products in Uranium Hexafluoride
112
Determination of Metallic Impurities by ICP-AES
113 – 122
Determination of Molybdenum, Niobium, Tantalum, Titanium, and Tungsten by ICP-AES
123 – 132
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. (For specific safeguard and safety consideration statements, see Section 7.)
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.
