ASTM C889 - 11

    Standard Test Methods for Chemical and Mass Spectrometric Analysis of Nuclear-Grade Gadolinium Oxide (Gd2O3) Powder

    Active Standard ASTM C889 | Developed by Subcommittee: C26.05

    Book of Standards Volume: 12.01


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    Significance and Use

    Gadolinium oxide powder is used, with subsequent processing, in nuclear fuel applications, such as an addition to uranium dioxide. These test methods are designed to determine whether the material meets the requirements described in Specification C888.

    The material is analyzed to determine whether it contains the minimum gadolinium oxide content specified.

    The loss on ignition and impurity content are determined to ensure that the weight loss and the maximum concentration limit of specified impurity elements are not exceeded.

    1. Scope

    1.1 These test methods cover procedures for the chemical and mass spectrometric analysis of nuclear-grade gadolinium oxide powders to determine compliance with specifications.

    1.2 The analytical procedures appear in the following order:

    Sections
    Carbon by Direct CombustionThermal Conductivity
    C1408 Test Method for Carbon (Total) in Uranium Oxide Powders and Pellets By Direct Combustion-Infrared Detection Method
    Total Chlorine and Fluorine by Pyrohydrolysis Ion
    Selective Electrode
    C1502 Test Method for Determination of Total Chlorine and Fluorine in Uranium Dioxide and Gadolinium Oxide
    Loss of Weight on Ignition7-13
    Sulfur by CombustionIodometric Titration
    Impurity Elements by a Spark-Source Mass Spectrographic
    C761 Test Methods for Chemical, Mass Spectrometric, Spectrochemical,Nuclear, and Radiochemical Analysis of Uranium Hexafluoride
    C1287 Test Method for Determination of Impurities In Uranium Dioxide By Inductively Coupled Plasma Mass Spectrometry
    Gadolinium Content in Gadolinium Oxide by Impurity
    Correction
    14-17

    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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 5.

    7.1 This test method covers the loss-on-ignition of volatile constituents from nuclear-grade gadolinium oxide (Gd2O3) powder.

    14.1 The percent gadolinium oxide content of powders, exclusive of volatiles, is determined by calculation after the material has been analyzed to determine the total impurities.


    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

    C761 Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Uranium Hexafluoride

    C888 Specification for Nuclear-Grade Gadolinium Oxide (Gd2O3) Powder

    C1287 Test Method for Determination of Impurities in Nuclear Grade Uranium Compounds by Inductively Coupled Plasma Mass Spectrometry

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

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

    D1193 Specification for Reagent Water


    UNSPSC Code

    UNSPSC Code 15131500(Nuclear fuel)


    DOI: 10.1520/C0889-11

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