ASTM C761 : 18

Standard Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Uranium Hexafluoride

Standard Details

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.