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ASTM C761-18

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

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STANDARD published on 1.2.2018

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The information about the standard:

Designation standards: ASTM C761-18
Publication date standards: 1.2.2018
SKU: NS-807415
The number of pages: 27
Approximate weight : 81 g (0.18 lbs)
Country: American technical standard
Category: Technical standards ASTM

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The category - similar standards:

Fissile materials

Annotation of standard text ASTM C761-18 :

Keywords:

analytical methods, mass spectrometry, radiochemistry, uranium hexafluoride ,, ICS Number Code 27.120.30 (Fissile materials and nuclear fuel technology)

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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.

1. 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

Gravimetric Determination of Uranium

9 – 17

Titrimetric Determination of Uranium

Preparation of High-Purity U₃O₈

Isotopic Analysis

Determination of Hydrocarbons, Chlorocarbons, and Partially Substituted Halohydrocarbons

21 – 27

Determination of Antimony

Determination of Bromine

Determination of Chlorine

30 – 36

Determination of Silicon and Phosphorus

37 – 43

Determination of Boron and Silicon

Determination of Ruthenium

Determination of Titanium and Vanadium

Spectrographic Determination of Metallic Impurities

Determination of Tungsten

Determination of Thorium and Rare Earths

Determination of Molybdenum

Atomic Absorption Determination of Metallic Impurities

51 – 56

Impurity Determination by Spark-Source Mass Spectrography

Determination of Boron-Equivalent Neutron Cross Section

Determination of Uranium-233 Abundance by Thermal Ionization Mass Spectrometry

Determination of Uranium-232 by Alpha Spectrometry

60 – 66

Determination of Fission Product Activity

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. 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.

2. Referenced Documents

C1429-21	Standard Test Method for Isotopic Analysis of Uranium Hexafluoride by Double-Standard Multi-Collector Gas Mass Spectrometer
C1441-13	Standard Test Method for the Analysis of Refrigerant 114, Plus Other Carbon-Containing and Fluorine-Containing Compounds in Uranium Hexafluoride via Fourier-Transform Infrared (FTIR) Spectroscopy (Withdrawn 2022)
C1474-19	Standard Test Method for Analysis of Isotopic Composition of Uranium in Nuclear-Grade Fuel Material by Quadrupole Inductively Coupled Plasma-Mass Spectrometry
C1477-19	Standard Test Method for Isotopic Abundance Analysis of Uranium Hexafluoride and Uranyl Nitrate Solutions by Multi-Collector, Inductively Coupled Plasma-Mass Spectrometry
C1508-18	Standard Test Method for Determination of Bromine and Chlorine in UF6 and Uranyl Nitrate by X-Ray Fluorescence (XRF) Spectroscopy
C1539-08	Standard Test Method for Determination of Technetium-99 in Uranium Hexafluoride by Liquid Scintillation Counting
C1561-10(2016)	Standard Guide for Determination of Plutonium and Neptunium in Uranium Hexafluoride and U-Rich Matrix by Alpha Spectrometry
C1636-22	Standard Guide for Determination of Uranium-232 in Uranium Hexafluoride
C1689-21	Standard Practice for Subsampling of Uranium Hexafluoride
C1742-17	Standard Test Method for Isotopic Analysis of Uranium Hexafluoride by Double Standard Single-Collector Gas Mass Spectrometer Method (Withdrawn 2023)
D1193-06(2018)	Standard Specification for Reagent Water
C996-20	Standard Specification for Uranium Hexafluoride Enriched to Less Than 5 % 235U
E60-11(2022)e1	Standard Practice for Analysis of Metals, Ores, and Related Materials by Spectrophotometry (Includes all amendments and changes 6/29/2022).

C1346-19	Standard Practice for Dissolution of UF6 from P-10 Tubes
C1344-97	Standard Test Method for Isotopic Analysis of Uranium Hexafluoride by Single-Standard Gas Source Mass Spectrometer Method
C1233-15(2021)	Standard Practice for Determining Equivalent Boron Contents of Nuclear Materials
C1380-04	Standard Test Method for Determination of Uranium Content and Isotopic Composition by Isotope Dilution Mass Spectrometry
USEC 651	Good Handling and Practices for UF6
ANSI N 14.1	Nuclear Material-Uranium Hexafluoride-Packaging for Transport
C1413-18	Standard Test Method for Isotopic Analysis of Hydrolyzed Uranium Hexafluoride and Uranyl Nitrate Solutions by Thermal Ionization Mass Spectrometry
ISO 7195	Nuclear Energy-Packaging of Uranium Hexafluoride (UF6) for Transport
C1295-24	Standard Test Method for Gamma Energy Emission from Fission and Decay Products in Uranium Hexafluoride and Uranyl Nitrate Solution
C1287-18	Standard Test Method for Determination of Impurities in Nuclear Grade Uranium Compounds by Inductively Coupled Plasma Mass Spectrometry
C1267-17(2022)	Standard Test Method for Uranium by Iron (II) Reduction in Phosphoric Acid Followed by Chromium (VI) Titration in the Presence of Vanadium
C859-24	Standard Terminology Relating to Nuclear Materials
C1428-18(2023)	Standard Test Method for Isotopic Analysis of Uranium Hexafluoride by Single–Standard Gas Source Multiple Collector Mass Spectrometer Method
C1128-23	Standard Guide for Preparation of Working Reference Materials for Use in Analysis of Nuclear Fuel Cycle Materials
C787-20	Standard Specification for Uranium Hexafluoride for Enrichment
C799-19	Standard Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Nuclear-Grade Uranyl Nitrate Solutions
C1219-05	Standard Test Methods for Arsenic in Uranium Hexafluoride
D3084-20	Standard Practice for Alpha-Particle Spectrometry of Water

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