Standard Test Methods for Chemical and Spectrochemical Analysis of Nuclear-Grade Silver-Indium-Cadmium Alloys

SCOPE
1.1 These test methods cover procedures for the chemical and spectrochemical analysis of nuclear grade silver-indium-cadmium (Ag-In-Cd) alloys to determine compliance with specifications.
1.2 The analytical procedures appear in the following order:SectionsSilver, Indium, and Cadmium by a Titration MethodTrace Impurities by Carrier-Distillation Spectro-chemical Method
1.3 The values stated in SI units are to be regarded as the standard.
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 hazard and precautionary statements, see Section 5 and Practices E 50.

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Publication Date
24-May-1990
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ASTM C760-90(2002) - Standard Test Methods for Chemical and Spectrochemical Analysis of Nuclear-Grade Silver-Indium-Cadmium Alloys
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:C760–90(Reapproved 2002)
Standard Test Methods for
Chemical and Spectrochemical Analysis of Nuclear-Grade
1
Silver-Indium-Cadmium Alloys
This standard is issued under the fixed designation C760; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Significance and Use
1.1 These test methods cover procedures for the chemical 3.1 Silver-indium-cadmium alloy is used as a control mate-
and spectrochemical analysis of nuclear grade silver-indium- rial in nuclear reactors. In order to be suitable for this purpose,
cadmium (Ag-In-Cd) alloys to determine compliance with the material must meet the specifications for assay and impu-
specifications. rity content. These test methods are designed to show whether
1.2 Theanalyticalproceduresappearinthefollowingorder: or not a given material meets the specifications as given in
Specification C752.
Sections
Silver, Indium, and Cadmium by a Titration Method 7-15
3.1.1 An assay is performed to determine whether the
Trace Impurities by Carrier-Distillation Spectro- 16-22
material has the chemical composition specified.
chemical Method
3.1.2 The impurity content is determined to ensure that the
1.3 The values stated in SI units are to be regarded as the
maximum concentration limit of impurities is not exceeded.
standard.
1.4 This standard does not purport to address all of the 4. Purity of Reagents
safety concerns, if any, associated with its use. It is the
4.1 Reagent grade chemicals shall be used in all tests.
responsibility of the user of this standard to establish appro-
Unlessotherwiseindicated,itisintendedthatallreagentsshall
priate safety and health practices and determine the applica-
conform to the specifications of the Committee on Analytical
6
bility of regulatory limitations prior to use. For specific hazard
Reagents of the American Chemical Society, where such
andprecautionarystatements,seeSection5andPracticesE50.
specifications are available. Other grades may be used, pro-
vided it is first ascertained that the reagent is of sufficiently
2. Referenced Documents
high purity to permit its use without lessening the accuracy of
2.1 ASTM Standards:
the determination.
C 752 Specification for Nuclear-Grade Silver-
4.2 Purity of Water—Unlessotherwiseindicated,references
2
IndiumCadmium Alloy
towatershallbeunderstoodtomeanreagentwaterconforming
3
D1193 Specification for Reagent Water
to Specification D1193.
E50 Practices forApparatus, Reagents, and Safety Precau-
4
tions for Chemical Analysis of Metals 5. Hazards
E115 Practice for Photographic Processing in Optical
5.1 Properprecautionsshouldbetakentopreventinhalation
4
Emission Spectrographic Analysis
or ingestion of heavy element (silver, indium, or cadmium)
2.2 Other Document:
powder or dust during handling.
5
NBS Circular 602
5.2 Workers should observe precautions as specified in
vendor-supplied Material Safety Data Sheets (MSDS).
6. Sampling
1
These test methods are under the jurisdiction of ASTM Committee C26 on
6.1 Suggestions for sampling this alloy are given in Speci-
Nuclear Fuel Cycle and are the direct responsibility of Subcommittee C26.03 on
Neuron Absorber Materials. fication C752.
Current edition approved May 25, 1990. Published July 1990. Originally
published as C760–71. Last previous edition C760–79.
2 6
Annual Book of ASTM Standards, Vol 12.01. “ReagentChemicals,AmericanChemicalSocietySpecifications,”Am.Chemi-
3
Annual Book of ASTM Standards, Vol 11.01. calSoc.Washington,DC.Forsuggestionsonthetestingofreagentsnotlistedbythe
4
Annual Book of ASTM Standards, Vol 03.05. American Chemical Society, see “Reagent Chemicals and Standards,” by Joseph
5
Available from National Institute of Standards and Technology, Gaithersburg, Rosin, D. Van Nostrand Co., Inc., New York, NY, and the “United States
MD 20899. Pharmacopeia.”
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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C760–90 (2002)
SILVER, INDIUM, AND CADMIUM BY A TITRATION 11.6 Nitric Acid (sp gr 1.42)—Concentrated nitric acid
METHOD (HNO ).
3
11.7 PAN Indicator Solution (0.1% PAN in Methanol)—
7. Scope
Dissolve 100 mg of 1-(2-pyridylazo)-2-naphthol in 100 mLof
methyl alcohol and mix until completely dissolved.
7.1 This test method is applicable to the determination of
11.8 Silver (Ag)—Metal, >99.99% pure.
silver, indium, and cadmium in alloys of approximately 80%
silver, 15% indium, and 5% cadmium used in nuclear reactor 11.9 Sodium Chloride (NaCl).
,
78
11.10 Sodium Chloride Solution (0.0500 M)—Dry sodium
control rod applic
...

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