ASTM C968 - 19
Standard Test Methods for Analysis of Sintered Gadolinium Oxide-Uranium Dioxide Pellets
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Significance and Use
4.1 The test methods in this method are designed to show whether a given material is in accordance with Specification C922.
1. Scope
1.1 These test methods cover procedures for the analysis of sintered gadolinium oxide-uranium dioxide pellets to determine compliance with specifications.
1.2 The analytical procedures appear in the following order:
|
| Section |
| Carbon (Total) by Direct Combustion—Thermal Conductivity Method | 2 |
| C1408 Test Method for Carbon (Total) in Uranium Oxide Powders and Pellets By Direct Combustion-Infrared Detection Method | 3 |
| Chlorine and Fluorine by Pyrohydrolysis Ion-Selective Electrode Method | 4 |
| C1502 Test Method for Determination of Total Chlorine and Fluorine in Uranium Dioxide and Gadolinium Oxide | 3 |
| Gadolinia Content by Energy-Dispersive X-Ray Spectrometry | 4 |
| C1456 Test Method for Determination of Uranium or Gadolinium (or both) in Gadolinium Oxide-Uranium Oxide Pellets or by X-Ray Fluorescence (XRF) | 3 |
| Hydrogen by Inert Gas Fusion | 4 |
| C1457 Test Method for Determination of Total Hydrogen Content of Uranium Oxide Powders and Pellets by Carrier Gas Extraction | 3 |
| Isotopic Uranium Composition by Multiple-Filament Surface-Ionization Mass Spectrometric Method | 2 |
| C1413 Test Method for Isotopic Analysis of Hydrolyzed Uranium Hexafluoride And Uranyl Nitrate Solutions By Thermal Ionization Mass Spectrometry | 3 |
| C1347 Practice for Preparation and Dissolution of Uranium Materials for Analysis | 3 |
| Nitrogen by Distillation—Nessler Reagent (Photometric) Method | 7 to 17 |
| Oxygen-to-Metal Ratio of Sintered Gadolinium Oxide-Uranium Dioxide Pellets | 4 |
| C1430 Test Method for Determination of Uranium, Oxygen to Uranium (O/U), and Oxygen to Metal (O/M) in Sintered Uranium Dioxide and Gadolinia-Uranium Dioxide Pellets by Atmospheric Equilibration | 3 |
| Spectrochemical Determination of Trace Impurity Elements | 4 |
| C1517 Test Method for Determination of Metallic Impurities in Uranium Metal or Compounds by DC-Arc Emission Spectroscopy | 3 |
| Total Gas by Hot Vacuum Extraction | 2 |
| Ceramographic Determination of Free Gd2O3 and Free UO2 to Estimate the Homogeneity of (U,Gd)O2 Pellets | 18 to 25 |
| Ceramographic Determination of Average Grain Size by Linear Intercept after Chemical Etching | 26 to 33 |
1.3 The values stated in SI units are to be regarded as the 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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
C859 Terminology Relating to Nuclear Materials
C922 Specification for Sintered Gadolinium Oxide-Uranium Dioxide Pellets
C1347 Practice for Preparation and Dissolution of Uranium Materials for Analysis
C1408 Test Method for Carbon (Total) in Uranium Oxide Powders and Pellets By Direct Combustion-Infrared Detection Method
C1413 Test Method for Isotopic Analysis of Hydrolyzed Uranium Hexafluoride and Uranyl Nitrate Solutions by Thermal Ionization Mass Spectrometry
C1430 Test Method for Determination of Uranium, Oxygen to Uranium (O/U), and Oxygen to Metal (O/M) in Sintered Uranium Dioxide and Gadolinia-Uranium Dioxide Pellets by Atmospheric Equilibration
C1456 Test Method for Determination of Uranium or Gadolinium (or both) in Gadolinium Oxide-Uranium Oxide Pellets or by X-Ray Fluorescence (XRF)
C1457 Test Method for Determination of Total Hydrogen Content of Uranium Oxide Powders and Pellets by Carrier Gas Extraction
C1502 Test Method for Determination of Total Chlorine and Fluorine in Uranium Dioxide and Gadolinium Oxide
C1517 Test Method for Determination of Metallic Impurities in Uranium Metal or Compounds by DC-Arc Emission Spectroscopy
D1193 Specification for Reagent Water
E112 Test Methods for Determining Average Grain Size
E146 Methods of Chemical Analysis of Zirconium and Zirconium Alloys (Silicon, Hydrogen, and Copper)
ICS Code
ICS Number Code 27.120.30 (Fissile materials and nuclear fuel technology)
UNSPSC Code
UNSPSC Code
Referencing This Standard
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DOI: 10.1520/C0968-19
Citation Format
ASTM C968-19, Standard Test Methods for Analysis of Sintered Gadolinium Oxide-Uranium Dioxide Pellets, ASTM International, West Conshohocken, PA, 2019, www.astm.org
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