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ASTM C968-19

Standard Test Methods for Analysis of Sintered Gadolinium Oxide-Uranium Dioxide Pellets

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NORMA vydána dne 1.9.2019

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Informace o normě:

Označení normy: ASTM C968-19
Datum vydání normy: 1.9.2019
Kód zboží: NS-970020
Počet stran: 6
Přibližná hmotnost: 18 g (0.04 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Anotace textu normy ASTM C968-19 :

Keywords:

ceramographic determinations, gadolinium oxide, impurities, uranium oxide,, ICS Number Code 27.120.30 (Fissile materials and nuclear fuel technology)

Doplňující informace

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

C1408 Test Method for Carbon (Total) in Uranium Oxide Powders and Pellets By Direct Combustion-Infrared Detection Method

Chlorine and Fluorine by Pyrohydrolysis Ion-Selective Electrode Method

C1502 Test Method for Determination of Total Chlorine and Fluorine in Uranium Dioxide and Gadolinium Oxide

Gadolinia Content by Energy-Dispersive X-Ray Spectrometry

C1456 Test Method for Determination of Uranium or Gadolinium (or both) in Gadolinium Oxide-Uranium Oxide Pellets or by X-Ray Fluorescence (XRF)

Hydrogen by Inert Gas Fusion

C1457 Test Method for Determination of Total Hydrogen Content of Uranium Oxide Powders and Pellets by Carrier Gas Extraction

Isotopic Uranium Composition by Multiple-Filament Surface-Ionization Mass Spectrometric Method

C1413 Test Method for Isotopic Analysis of Hydrolyzed Uranium Hexafluoride And Uranyl Nitrate Solutions By Thermal Ionization Mass Spectrometry

C1347 Practice for Preparation and Dissolution of Uranium Materials for Analysis

Nitrogen by Distillation—Nessler Reagent (Photometric) Method

7 to 17

Oxygen-to-Metal Ratio of Sintered Gadolinium Oxide-Uranium Dioxide Pellets

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

Spectrochemical Determination of Trace Impurity Elements

C1517 Test Method for Determination of Metallic Impurities in Uranium Metal or Compounds by DC-Arc Emission Spectroscopy

Total Gas by Hot Vacuum Extraction

Ceramographic Determination of Free Gd₂O₃ and Free UO₂ to Estimate the Homogeneity of (U,Gd)O

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

C1502-16	Standard Test Method for Determination of Total Chlorine and Fluorine in Uranium Dioxide and Gadolinium Oxide
C1517-16	Standard Test Method for Determination of Metallic Impurities in Uranium Metal or Compounds by DC-Arc Emission Spectroscopy
D1193-06(2018)	Standard Specification for Reagent Water
E112-13(2021)	Standard Test Methods for Determining Average Grain Size
E146-83	Methods of Chemical Analysis of Zirconium and Zirconium Alloys (Silicon, Hydrogen, and Copper) (Withdrawn 1989)
C1456-13(2018)	Standard Test Method for Determination of Uranium or Gadolinium (or both) in Gadolinium Oxide-Uranium Oxide Pellets or by X-Ray Fluorescence (XRF)
C922-21	Standard Specification for Sintered Gadolinium Oxide-Uranium Dioxide Pellets for Light Water Reactors
C1347-08(2023)	Standard Practice for Preparation and Dissolution of Uranium Materials for Analysis
C1430-18	Standard 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
C1457-18	Standard Test Method for Determination of Total Hydrogen Content of Uranium Oxide Powders and Pellets by Carrier Gas Extraction
C1408-16	Standard Test Method for Carbon (Total) in Uranium Oxide Powders and Pellets By Direct Combustion-Infrared Detection Method
C1413-18	Standard Test Method for Isotopic Analysis of Hydrolyzed Uranium Hexafluoride and Uranyl Nitrate Solutions by Thermal Ionization Mass Spectrometry

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