ASTM C1854-17

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.
Designation: C1854 − 17
Standard Test Method for
Determination of Hydrogen (total from all sources) in Mixed
Oxide ((U, Pu)O ) Sintered Pellets by the Inert Gas Fusion
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Technique Followed by Thermal Conductivity Measurement
This standard is issued under the fixed designation C1854; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
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2.1 ASTM Standards:
1.1 This test method covers the determination of hydrogen
C698 Test Methods for Chemical, Mass Spectrometric, and
in nuclear-grade mixed oxides of uranium and plutonium ((U,
Spectrochemical Analysis of Nuclear-Grade Mixed Ox-
Pu)O ) sintered fuel pellets. This test method is an alternative
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ides ((U, Pu)O )
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to Test Method C698 for the determination of moisture in
C753 Specification for Nuclear-Grade, Sinterable Uranium
nuclear-grade sintered mixed oxide (MOX) fuel pellets. Test
Dioxide Powder
Method C698 describes the detection of moisture in mixed
C757 Specification for Nuclear-Grade Plutonium Dioxide
oxides using a coulometric, electrolytic moisture analyzer.
Powder for Light Water Reactors
Although the main source of H in the fuel pellets is moisture,
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C833 Specification for Sintered (Uranium-Plutonium) Diox-
there could be other sources. The MOX pellet Specification
ide Pellets for Light Water Reactors
C833 specifies a limit for hydrogen from all sources, not only
C859 Terminology Relating to Nuclear Materials
moisture. The inert gas fusion followed by thermal conductiv-
C1068 Guide for Qualification of Measurement Methods by
ity detector specified in this test method allows for detection of
a Laboratory Within the Nuclear Industry
hydrogen from all sources. Therefore, this test method can be
3. Terminology
used to determine the limit specified in C833.
3.1 For definitions of terms used in this test method but not
1.2 The values stated in SI units are to be regarded as
defined herein, refer to Terminology C859.
standard. No other units of measurement are included in this
3.2 Definitions of Terms Specific to This Standard:
standard.
3.2.1 MOX—nuclearfuelcomposedofamixtureofuranium
1.3 This standard does not purport to address all of the
and plutonium oxides ((U, Pu)O ).
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safety concerns, if any, associated with its use. It is the
3.2.2 reference material—material traceable to a reference
responsibility of the user of this standard to establish appro-
material from a national standards body such as the U.S.
priate safety and health practices and determine the applica-
National Institute for Standards and Technology (NIST) or
bility of regulatory limitations prior to use.
equivalent.
1.4 This international standard was developed in accor-
3.2.3 sintering—to increase the bonding in a mass of pow-
dance with internationally recognized principles on standard-
der or a compact by heating below the melting point of the
ization established in the Decision on Principles for the
main constituent.
Development of International Standards, Guides and Recom-
3.3 Acronyms:
mendations issued by the World Trade Organization Technical
3.3.1 LIMS—Laboratory Information Management System
Barriers to Trade (TBT) Committee.
3.3.2 TCD—Thermal Conductivity Detector
4. Summary of Test Method
4.1 Themethodforthedeterminationoftotalhydrogen(H )
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fromallsourcespresentedinthistestmethodconsistsoffusion
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This test method is under the jurisdiction ofASTM Committee C26 on Nuclear
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Fuel Cycle and is the direct responsibility of Subcommittee C26.05 on Methods of For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Test. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved June 1, 2017. Published June 2017. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
C1854-17. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C1854 − 17
of the sample in an electrode impulse furnace in a stream of uncertainty increases.At hydrogen contents close to the typical
nitrogen (N ) or argon (Ar) gas at a temperature sufficient to hydrogencontentspecificationlimit(1.3µghydrogen/gU+Pu
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release all hydrogen in the sample. The stream of gas carries metal); the combined relative uncertainty at the 95 % confi-
the released hydrogen through a series of filters to remove dence lev
...