ASTM-C698 2010

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C698-10 Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Mixed Oxides ((U, Pu)O₂)

Published By	Publication Date	Number of Pages
ASTM	2010	28

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

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Description

1.1 These test methods cover procedures for the chemical, mass spectrometric, and spectrochemical analysis of nuclear-grade mixed oxides, (U, Pu)O ₂ , powders and pellets to determine compliance with specifications.

1.2 The analytical procedures appear in the following order:

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 safeguard and safety precaution statements, see Sections 11, 20, 64, and 112 and 102.6.1.)

7.1 This test method covers the determination of 5 to 100 ? g/g of nitride nitrogen in mixtures of plutonium and uranium oxides in either pellet or powder form.

15.1 This test method covers the determination of 10 to 200 ? g of residual carbon in nuclear grade mixed oxides, (U,Pu)O ₂ .

27.1 This test method is applicable to the determination of 5 to 100 ? g/g of chlorine and 1 to 100 ? g/g of fluorine in 1-g samples of nuclear-grade mixed oxides, (U, Pu)O ₂ .

35.1 This test method covers the determination of sulfur in the concentration range from 10 to 600 ? g/g for samples of nuclear-grade uranium and plutonium mixed oxides, (U, Pu)O ₂ .

44.1 This test method covers the determination of moisture in nuclear-grade mixed oxides of uranium and plutonium (U,Pu)O ₂ . Detection limits are as low as 10 ? g.

52.1 This test method covers the determination of rare earths in uranium-plutonium dioxide over the range from 10 to 200 ? g/g.

60.1 This test method covers the analysis of uranium-plutonium dioxide [(U, Pu)O ₂ ] for the 25 elements in the ranges indicated in Table 1, using gallium oxides or sodium fluoride as the carrier. (See also Table 2.)

70.1 This test method covers the spark source spectrographic analysis of uranium and plutonium dioxide for impurity elements. Because of its extreme sensitivity, it may be the most practical test method for the determination of certain impurities whose concentration is below the detectable limits of other spectrographic methods.

77.1 This test method covers the measurement of volatiles other than water in reactor-grade mixed dioxide pellets. The lower limit of the test method using the described equipment and a sample of approximately 1 g is 0.01 cm ³ per gram of sample at STP conditions (23).

85.1 This test method covers the determination of 5 to 150 ? g of tungsten in 1-g samples of nuclear-grade uranium and plutonium mixed oxides (U, Pu)O ₂ (24).

94.1 This test method covers the determination of dysprosium, europium, gadolinium, and samarium in mixed oxides of uranium and plutonium over the concentration range from 0.1 to 10 ? g/g of mixed oxide.

98.1 This test method covers the determination of the isotopic composition of uranium and plutonium in nuclear-grade mixed oxides ((U, Pu)O ₂ ).

107.1 This test method covers the determination of the oxygen-to-metal atom ratio (O/M) in sintered mixed oxide pellets and powders.

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents
2	Significance and Use Reagents Safety Precautions
3	Sampling and Dissolution Scope Summary of Test Method Apparatus Reagents Precautions Procedure FIG. 1
4	Calculation Precision and Bias Scope Summary of Test Method FIG. 2
5	Interferences Apparatus Reagents and Materials Safety Precautions Sampling and Preparation Preparation of Apparatus Calibration
6	Procedure Calculation Precision and Bias Scope Summary of Test Method Interferences Apparatus (See and ) FIG. 3
7	Reagents Pyrohydrolysis Procedure Measurement of Chloride and Fluoride
8	Precision and Bias
9	Scope Summary of Test Method Interference Apparatus Reagents FIG. 4
10	Calibration Procedure Calculation Precision and Bias Scope FIG. 5
11	Summary of Test Method Apparatus Reagents Operation Standardization Calculation Precision and Bias Scope Summary of Test Method
12	Apparatus Reagents and Materials Calibration Procedure Calculation Precision and Bias Scope
13	Summary of Test Method Apparatus Reagents and Materials Safety Precautions Calibration Procedure TABLE 1 TABLE 2
14	Measurement Calculation FIG. 6 TABLE 3
15	Precision and Bias Scope Summary of Test Method Apparatus Reagents Procedure
16	Calculation Precision and Bias Scope Summary of Test Method
17	Interferences Apparatus Reagents Procedure FIG. 7
18	Calculation FIG. 8
19	Precision and Bias Scope Summary of Test Method Interference Apparatus Reagents Procedure
20	Sample Analysis Calculation Precision and Bias Scope Summary of Test Method
21	Interferences Procedure Scope Summary of the Test Method Interferences Apparatus Reagents
22	Calibration of the Mass Spectrometer Procedure
24	Calculation
25	Precision and Bias Scope Summary of Test Method
26	Interferences Apparatus Reagents Safety Precautions Procedure FIG. 9
27	Calculation Precision and Bias REFERENCES

Additional information

Uranium in the Presence of Pu by Potentiometric Titration
Plutonium-238 Isotopic Abundance by Alpha Spectrometry
Plutonium by Controlled-Potential Coulometry
Sulfur by Distillation-Spectrophotometry	35 to 43
Carbon (Total) by Direct Combustion-Thermal Conductivity	15 to 26
Americium-241 in Plutonium by Gamma-Ray Spectrometry
Isotopic Composition by Mass Spectrometry
Rare Earths by Copper Spark Spectroscopy	52 to 59
Plutonium by Amperometric Titration with Iron (II)
Uranium and Plutonium Isotopic Analysis by Mass Spectrometry	98 to 106
Rare Earth Elements by Spectroscopy	94 to 97
Impurities by Spark-Source Mass Spectrography	70 to 76
Trace Impurities by Carrier Distillation Spectroscopy	60 to 69
Total Chlorine and Fluorine by Pyrohydrolysis	27 to 34
Nitrogen by Distillation Spectrophotometry Using Nessler Reagent	7 to 14
Oxygen-to-Metal Atom Ratio by Gravimetry	107 to 115
Moisture by the Coulometric, Electrolytic Moisture Analyzer	44 to 51
Total Gas in Reactor-Grade Mixed Dioxide Pellets	77 to 84
Tungsten by Dithiol-Spectrophotometry	85 to 93
	Sections
ICS Codes	27.120.30 - Fissile materials and nuclear fuel technology

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