ASTM-C791:2011 Edition

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C791-11 Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Boron Carbide

Published By	Publication Date	Number of Pages
ASTM	2011	25

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Categories: 27.120.30 - Fissile materials and nuclear fuel technology, ASTM

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Description

ASTM C791-11

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

ASTM C791

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:

7.1 This method covers the determination of total carbon in nuclear-grade boron carbide in either powder or pellet form.

17.1 This method covers the determination of total boron in samples of boron carbide powder and pellets by titrimetry and ICP OES. The recommended amount of boron for each titration is 100 ± 10 mg.

28.1 This method covers the determination of the isotopic composition of boron in nuclear-grade boron carbide, in powder and pellet form, containing natural to highly enriched boron.

33.1 This method covers the separation of up to 100 μg of halides per gram of boron carbide. The separated halides are measured using other methods found in this standard. It also covers the sample preparation for the determination of isotopic composition by ICP MS.

41.1 This method covers the measurement of chloride after separation from boron carbide by pyrohydrolysis. The lower limit of the method is about 2 μg of chloride per titration.

50.1 This method covers the measurement of chloride and fluoride after separation from boron carbide by pyrohydrolysis. The limit of detection for chloride and fluoride in the boron carbide sample is 3 mg/kg and 2 mg/kg, respectively.

60.1 This method covers the determination of water in boron carbide in either powder or pellet form. The lower limit of the method is 5 μg of water. The lower limit of the weight loss on drying method is 20 mg/kg for a sample mass of 5 g.

65.1 This method covers the determination of soluble boron in boron carbide. Soluble boron is defined as that boron dissolved under the conditions of the test.

80.1 This method covers the determination of free carbon (also called soluble carbon) in boron carbide powders and shaped or sintered bodies of boron carbide after crushing. This method is applicable to mass fractions of free carbon of 0.01 % to 10 %.

Keywords

Boron carbide (nuclear grade); Carbon content–nuclear materials; Chloride analysis–nuclear applications; Fluoride content; Isotopic analysis; Mass spectrometry–nuclear materials/applications; Spectrochemical analysis; Trace elements–nuclear materials; Trace elements–spectrochemical analysis; Water content

ICS Code

ICS Number Code 27.120.30 (Fissile materials and nuclear fuel technology)

DOI: 10.1520/C0791-11

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Significance and Use Reagents Safety Precautions Sampling
2	Scope Summary of Test Method Interferences Apparatus Reagents Sampling and Sample Preparation Calibration Procedure
3	Calculation ( ) Scope Summary of Method Interferences Apparatus
4	Reagents Precautions Sampling and Sample Preparation Procedure
5	Titrimetric Determination of Boron
6	ICP OES
7	Precision and Bias Scope Summary of Method Interferences Isotopic Composition by TIMS
8	Isotopic Composition by ICP MS
9	Scope Summary of Method Interferences Apparatus Reagents Precautions Procedure
10	Pyrohydrolysis as Sample Preparation Procedure for Isotipic Composition by ICP MS Scope Summary of Method
11	Interferences Apparatus Reagents Calibration of Titrator Procedure Calculation Precision and Accuracy Scope Summary of Method Interferences
12	Apparatus Reagents Calibration of Electrode Procedure Calculation Precision and Accuracy Preface
13	Scope Water by Constant-Voltage Coulometry
14	Weight Loss on Drying Method DCArc OES Method
16	Wet Chemical Methods
17	Scope Summary of Method Interferences Apparatus
18	Reagents Precautions Standardization of Titrant Blank Sample Preparation Procedure
19	Calculation Procedure Calculation Precision and Bias
20	Determination of Soluble Boron by ICP OES Scope Summary of Method Interferences Apparatus
21	Reagents Sample Preparation Calibration Procedure Calculation of Free Carbon Content
22	Precision and Bias REFERENCES
23	TABLE 1 FIG. 1 FIG. 2
24	FIG. 3
25	FIG. 4

Additional information

	Sections
Total Carbon by Combustion in an Inductive Furnace and Infrared Measurement	7-16
Chloride by Constant-Current Coulometry	41-49
Isotopic Composition by Mass Spectrometry	28-32
Pyrohydrolysis	33-40
Total Boron by Titrimetry and ICP OES	17-27
Soluble Boron by Titrimetry and ICP OES	65-79
Water by Constant-Voltage Coulometry and Weight Loss on Drying	59-62
Free Carbon by a Coulometric Method	80-89
Chloride and Fluoride by Ion-Selective Electrode	50-58
Metallic Impurities	63 and 64
ICS Codes	27.120.30 - Fissile materials and nuclear fuel technology