Standard Historical Last Updated: Mar 15, 2019 Track Document
ASTM C791-12

Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Boron Carbide

Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Boron Carbide C0791-12 ASTM|C0791-12|en-US Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Boron Carbide Standard new BOS Vol. 12.01 Committee C26
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Significance and Use

Boron carbide is used as a control material in nuclear reactors. In order to be suitable for this purpose, the material must meet certain criteria for assay, isotopic composition, and impurity content. These methods are designed to show whether or not a given material meets the specifications for these items as described in Specifications C750 and C751.

An assay is performed to determine whether the material has the specified boron content.

Determination of the isotopic content of the boron is made to establish whether the content is in compliance with the purchasers specifications.

Impurity content is determined to ensure that the maximum concentration limit of certain impurity elements is not exceeded.

Scope

1.1 These test methods cover procedures for the chemical, mass spectrometric, and spectrochemical analysis of nuclear-grade boron carbide powder and pellets to determine compliance with specifications.

1.2 The analytical procedures appear in the following order:

Sections
Total Carbon by Combustion in an Inductive Furnace and Infrared Measurement 7-16
Total Boron by Titrimetry and ICP OES17-27
Isotopic Composition by Mass Spectrometry28-32
Pyrohydrolysis33-40
Chloride by Constant-Current Coulometry41-49
Chloride and Fluoride by Ion-Selective Electrode50-58
Water by Constant-Voltage Coulometry and Weight Loss on Drying59-62
Metallic Impurities63 and 64
Soluble Boron by Titrimetry and ICP OES65-79
Free Carbon by a Coulometric Method80-89

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Details
Book of Standards Volume: 12.01
Developed by Subcommittee: C26.03
Pages: 25
DOI: 10.1520/C0791-12
ICS Code: 27.120.30