Standard Specification for Nuclear-Grade Gadolinium Oxide &#40;Gd<inf>2</inf>O<inf>3</inf >&#41; Powder

ABSTRACT
This specification provides chemical and physical requirements for nuclear-grade gadolinium oxide powder intended for subsequent processing and use in nuclear fuel applications. Chemical requirements of the specification include loss-on-ignition, gadolinium oxide concentration, and impurity content limits. The buyer shall specify the particle size, density, shape factor, and crystal structure. Gadolinium oxide powder shall be packaged in sealed containers.
SCOPE
1.1 This specification provides the chemical and physical requirements for nuclear-grade gadolinium oxide powder intended for subsequent processing and use in nuclear fuel applications, for example, as an addition to uranium dioxide.  
1.2 This specification does not include requirements for health and safety. Observance of this specification does not relieve the user of the obligation to be aware of and comply with all federal, state, and local regulations pertaining to possessing, shipping, processing, or using this material.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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Historical
Publication Date
31-Dec-2013
Current Stage
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Technical specification
ASTM C888-03(2014) - Standard Specification for Nuclear-Grade Gadolinium Oxide &#40;Gd<inf>2</inf>O<inf>3</inf >&#41; Powder
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C888 −03 (Reapproved 2014)
Standard Specification for
Nuclear-Grade Gadolinium Oxide (Gd O ) Powder
2 3
This standard is issued under the fixed designation C888; 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 E105 Practice for Probability Sampling of Materials
2.2 ANSI Standard:
1.1 This specification provides the chemical and physical
ANSI/ASME NQA-1 Quality Assurance Requirements for
requirements for nuclear-grade gadolinium oxide powder in-
Nuclear Facility Applications
tended for subsequent processing and use in nuclear fuel
2.3 U.S. Government Document:
applications, for example, as an addition to uranium dioxide.
Code of Federal Regulations, Title 10, Part 50 Energy (10
1.2 This specification does not include requirements for
CFR 50), Domestic Licensing of Production and Utiliza-
health and safety. Observance of this specification does not
tion Facilities
relieve the user of the obligation to be aware of and comply
3. Terminology
with all federal, state, and local regulations pertaining to
possessing, shipping, processing, or using this material.
3.1 Definitions of Terms Specific to This Standard:
3.1.1 Terms shall be defined in accordance with Terminol-
1.3 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this ogy C859 except as defined herein.
3.1.1.1 buyer—the organization issuing the purchase order.
standard.
3.1.1.2 powder lot—a quantity of gadolinium oxide powder
2. Referenced Documents
that has been processed in a manner such that samples taken in
accordance with the procedures of 8.1 can be considered as
2.1 ASTM Standards:
representative of the entire powder lot.
B329 Test Method for Apparent Density of Metal Powders
3.1.1.3 seller—the gadolinium oxide powder supplier.
and Compounds Using the Scott Volumeter
C493 Test Method for Bulk Density and Porosity of Granu-
4. Ordering Information
lar Refractory Materials by Mercury Displacement (Dis-
4.1 The buyer shall specify the following information for all
continued 2002) (Withdrawn 2002)
orders where this specification applies:
C859 Terminology Relating to Nuclear Materials
4.1.1 Powder lot size (allowable range),
C889 Test Methods for Chemical and Mass Spectrometric
4.1.2 Quantity (weight of delivered product),
Analysis of Nuclear-Grade Gadolinium Oxide (Gd O )
2 3
4.1.3 Nominal particle size range and applicable tolerances
Powder
in accordance with Specification E11,
E11 Specification for Woven Wire Test Sieve Cloth and Test
4.1.4 Density (optional), Scott Volumeter (Test Method
Sieves
B329) and Mercury Displacement (Test Method C493) are
referenced as guides to density measurement techniques,
This specification is under the jurisdiction of ASTM Committee C26 on
4.1.5 Shape factor and method of determination (optional),
Nuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.03 on
4.1.6 Sampling requirements,
Neutron Absorber Materials Specifications.
4.1.7 Crystal structure (optional), and
Current edition approved Jan. 1, 2014. Published February 2014. Originally
approved in 1978. Last previous edition approved in 2008 as C888 – 03 (2008).
4.1.8 Quality requirements.
DOI: 10.1520/C0888-03R14.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
Standards volume information, refer to the standard’s Document Summary page on 4th Floor, New York, NY 10036, http://www.ansi.org.
the ASTM website. AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
The last approved version of this historical standard is referenced on 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
www.astm.org. www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C888−03 (2014)
5. Chemical Composition 8.2.1 Quality verification tests by the seller,
8.2.2 Acceptance tests by the buyer,
5.1 Loss-on-Ignition—The loss-on-ignition as determined
8.2.3 Refereetests,intheeventthesebecomenecessary,and
after ignition for 2 h at a minimum temperature of 900°C shall
8.2.4 Retention of archive samples by the seller.
not exceed 1.5 weight %.
8.3 Archive samples shall be retained for a period of time
5.2 Gadolinium Oxide Concentration—The minimum
specified by the buyer and delivered to the buyer upon request.
Gd O concentration shall be 99.8 weight % exclusive of the
2 3
constituents lost on ignition as determined by Test Methods
9. Inspection and Certification
C
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