ASTM C1865-18

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: C1865 − 18
Standard Test Method for
The Determination of Carbon and Sulfur Content in
Plutonium Oxide Powder by the Direct Combustion-Infrared
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Spectrophotometer
This standard is issued under the fixed designation C1865; 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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1.1 This test method is for the determination of the carbon 2.1 ASTM Standards:
and sulfur contents in plutonium oxide (PuO ) powder. The C697 Test Methods for Chemical, Mass Spectrometric, and
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method utilizes an induction furnace purged with oxygen for Spectrochemical Analysis of Nuclear-Grade Plutonium
combustion of the sample. Carbon dioxide and sulfur dioxide Dioxide Powders and Pellets
producedbythecombustionaresweptintoabsorptioncellsand C753 Specification for Nuclear-Grade, Sinterable Uranium
quantified by infrared absorption spectrophotometers. This test Dioxide Powder
method is an alternative to the methods for carbon and sulfur C757 Specification for Nuclear-Grade Plutonium Dioxide
given in Test Method C697. Powder for Light Water Reactors
C833 Specification for Sintered (Uranium-Plutonium) Diox-
1.2 Determination of the carbon and sulfur contents in
ide Pellets for Light Water Reactors
nuclear-grade sintered mixed oxide (MOX) fuel pellets re-
C859 Terminology Relating to Nuclear Materials
quires the use of larger samples and is addressed in Test
C1068 Guide for Qualification of Measurement Methods by
Method C1853.
a Laboratory Within the Nuclear Industry
1.3 The values stated in SI units are to be regarded as
C1128 Guide for Preparation of Working Reference Materi-
standard. Units of measurement in parentheses are included for
als for Use in Analysis of Nuclear Fuel Cycle Materials
information only.
C1853 TestMethodforTheDeterminationofCarbon(Total)
1.4 This standard may involve hazardous materials,
Content in Mixed Oxide ((U, Pu)O ) Sintered Pellets by
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operations, and equipment. This standard does not purport to Direct Combustion-Infrared Detection Method
address all of the safety concerns, if any, associated with its
use. It is the responsibility of the user of this standard to 3. Terminology
establish appropriate safety, health, and environmental prac-
3.1 For definitions of terms used in this test method but not
tices and determine the applicability of regulatory limitations
defined herein, refer to Terminology C859.
prior to use.
3.2 Definitions of Terms Specific to This Standard:
1.5 This international standard was developed in accor-
3.2.1 accelerant—the material, like granular tungsten pow-
dance with internationally recognized principles on standard-
der and iron, used for accelerating the combustion of the
ization established in the Decision on Principles for the
plutonium oxide powder.
Development of International Standards, Guides and Recom-
3.2.2 MOX—nuclearfuelcomposedofamixtureofuranium
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee. and plutonium oxides ((U, Pu)O ).
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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 Oct. 1, 2018. Published October 2018. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
C1865-18. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C1865 − 18
3.2.3 sintering—the process of increasing the bonding in a availability of sufficient quantities of O , and the presence of
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mass of powder or a compact by heating below the melting impurity elements that can consume O .
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point of the main constituent.
6.3 Sample and standard masses (and particle sizes of the
3.3 Acronyms: oxide materials) should be similar so that combustion condi-
3.3.1 LANL—Los Alamos National Laboratory
tions and behaviors are as similar as possible to prevent a
systematic bias between the sample and standard data.
3.3.2 LIMS—Laboratory Information Management System
6.4 Daily, or before each use, the analyzer is checked with
3.3.3 NIST—NationalInstituteofStandardsandTechnology
a blank and one or more quality
...