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ASTM International - ASTM C698-16

Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Mixed Oxides ((U, Pu)O 2 )

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Organization: ASTM International
Publication Date: 1 June 2016
Status: active
Page Count: 27
ICS Code (Fissile materials and nuclear fuel technology): 27.120.30
significance And Use:

4.1 Mixed oxide, a mixture of uranium and plutonium oxides, is used as a nuclear-reactor fuel in the form of pellets. The plutonium content may be up to 10 weight %, and the diluent uranium... View More

scope:

1.1 These test methods cover procedures for the chemical, mass spectrometric, and spectrochemical analysis of nuclear-grade mixed oxides, (U, Pu)O2, powders and pellets to determine compliance with specifications.

1.2 The analytical procedures appear in the following order:

  Sections
Uranium in the Presence of Pu by Potentiometric Titration   2
Plutonium by Controlled-Potential Coulometry   2
Plutonium by Amperometric Titration with Iron (II)   2
Nitrogen by Distillation Spectrophotometry Using Nessler Reagent  8 to 15
Carbon (Total) by Direct Combustion-Thermal Conductivity  16 to 26
Total Chlorine and Fluorine by Pyrohydrolysis  27 to 34
Sulfur by Distillation-Spectrophotometry  35 to 43
Moisture by the Coulometric, Electrolytic Moisture Analyzer  44 to 51
Isotopic Composition by Mass Spectrometry   3
Rare Earths by Copper Spark Spectroscopy  52 to 59
Trace Impurities by Carrier Distillation Spectroscopy  60 to 68
Impurities by Spark-Source Mass Spectrography  69 to 75
Total Gas in Reactor-Grade Mixed Dioxide Pellets    4
Tungsten by Dithiol-Spectrophotometry  76 to 84
Rare Earth Elements by Spectroscopy  85 to 88
Plutonium-238 Isotopic Abundance by Alpha Spectrometry   5
Americium-241 in Plutonium by Gamma-Ray Spectrometry
Uranium and Plutonium Isotopic Analysis by Mass Spectrometry  89 to 97
Oxygen-to-Metal Atom Ratio by Gravimetry  98 to 105

1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

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 safety precaution statements, see Sections 6, 13.2.5, 41.7, and 93.6.1.)

Document History

ASTM C698-16
June 1, 2016
Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Mixed Oxides ((U, Pu)O2)
1.1 These test methods cover procedures for the chemical, mass spectrometric, and spectrochemical analysis of nuclear-grade mixed oxides, (U, Pu)O2, powders and pellets to determine compliance with...
June 1, 2010
Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Mixed Oxides ((U, Pu)O2)
1.1 These test methods cover procedures for the chemical, mass spectrometric, and spectrochemical analysis of nuclear-grade mixed oxides, (U, Pu)O2, powders and pellets to determine compliance with...
January 1, 2004
Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Mixed Oxides ((U, Pu)O2)
Mixed oxide, a mixture of uranium and plutonium oxides, is used as a nuclear-reactor fuel in the form of pellets. The plutonium content may be up to 10 weight %, and the diluent uranium may be of any...
February 10, 1998
Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Mixed Oxides ((U, Pu)O2)
1.1 These test methods cover procedures for the chemical, mass spectrometric, and spectrochemical analysis of nuclear-grade mixed oxides, (U, Pu)O2, powders and pellets to determine compliance with...
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