ASTM C888-03

Standard Specification for Nuclear-Grade Gadolinium Oxide (Gd₂O₃) 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.

General Information

• Status: Historical
• Publication Date: 09-Feb-2003
• ICS: 27.120.30 - Fissile materials and nuclear fuel technology
• ICS: 71.060.20 - Oxides
• Technical Committee: C26 - Nuclear Fuel Cycle
• Drafting Committee: C26.03 - Neutron Absorber Materials Specifications

Relations

• Replaces: ASTM C888-97 - Standard Specification for Nuclear-Grade Gadolinium Oxide (Gd₂O₃) Powder
• Effective Date: 10-Feb-2003
• Replaced By: ASTM C888-03(2008) - Standard Specification for Nuclear-Grade Gadolinium Oxide (Gd₂O₃) Powder
• Effective Date: 01-Dec-2008
• Referred By: ASTM C1457-18 - Standard Test Method for Determination of Total Hydrogen Content of Uranium Oxide Powders and Pellets by Carrier Gas Extraction
• Effective Date: 10-Feb-2003
• Referred By: ASTM C1408-16 - Standard Test Method for Carbon (Total) in Uranium Oxide Powders and Pellets By Direct Combustion-Infrared Detection Method
• Effective Date: 10-Feb-2003
• Referred By: ASTM C1502-16 - Standard Test Method for Determination of Total Chlorine and Fluorine in Uranium Dioxide and Gadolinium Oxide
• Effective Date: 10-Feb-2003
• Referred By: ASTM C889-18 - Standard Test Methods for Chemical and Mass Spectrometric Analysis of Nuclear-Grade Gadolinium Oxide (Gd<inf>2</inf>O<inf>3</inf>) Powder
• Effective Date: 10-Feb-2003
• Referred By: ASTM C922-21 - Standard Specification for Sintered Gadolinium Oxide-Uranium Dioxide Pellets for Light Water Reactors
• Effective Date: 10-Feb-2003

Standards Content (Sample)

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: C 888 – 03
Standard Specification for
1
Nuclear-Grade Gadolinium Oxide (Gd O ) Powder
2 3
This standard is issued under the fixed designation C 888; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope CFR 50), Domestic Licensing of Production and Utiliza-
7
tion Facilities
1.1 This specification provides the chemical and physical
requirements for nuclear-grade gadolinium oxide powder in-
3. Terminology
tended for subsequent processing and use in nuclear fuel
3.1 Definitions of Terms Specific to This Standard:
applications, for example, as an addition to uranium dioxide.
3.1.1 Terms shall be defined in accordance with Terminol-
1.2 This specification does not include requirements for
ogy C 859 except as defined herein.
health and safety. Observance of this specification does not
3.1.1.1 buyer—the organization issuing the purchase order.
relieve the user of the obligation to be aware of and comply
3.1.1.2 powder lot—a quantity of gadolinium oxide powder
with all federal, state, and local regulations pertaining to
that has been processed in a manner such that samples taken in
possessing, shipping, processing, or using this material.
accordance with the procedures of 8.1 can be considered as
2. Referenced Documents representative of the entire powder lot.
3.1.1.3 seller—the gadolinium oxide powder supplier.
2.1 ASTM Standards:
B 329 Test Method for Apparent Density of Powders of
4. Ordering Information
Refractory Metals and Compounds by the Scott Volume-
2 4.1 The buyer shall specify the following information for all
ter
orders where this specification applies:
C 493 TestMethodforBulkDensityandPorosityofGranu-
3 4.1.1 Powder lot size (allowable range),
lar Refractory Materials by Mercury Displacement
4
4.1.2 Quantity (weight of delivered product),
C 859 Terminology Relating to Nuclear Materials
4.1.3 Nominal particle size range and applicable tolerances
C 889 Test Methods for Chemical and Mass Spectrographic
in accordance with Specification E 11,
Analysis of Nuclear-Grade Gadolinium Oxide (Gd O )
2 3
4 4.1.4 Density (optional), Scott Volumeter (Test Method
Powder
B 329) and Mercury Displacement (Test Method C 493) are
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
5 referenced as guides to density measurement techniques,
poses
5 4.1.5 Shape factor and method of determination (optional),
E 105 Practice for Probability Sampling of Materials
4.1.6 Sampling requirements,
2.2 ANSI Standard:
4.1.7 Crystal structure (optional), and
ANSI/ASME NQA-1 Quality Assurance Requirements for
6 4.1.8 Quality requirements.
Nuclear Facility Applications
2.3 U.S. Government Document:
5. Chemical Composition
Code of Federal Regulations, Title 10, Part 50—Energy (10
5.1 Loss-on-Ignition— The loss-on-ignition as determined
after ignition for 2 h at a minimum temperature of 900°C shall
1
not exceed 1.5 weight %.
This specification is under the jurisdiction of ASTM Committee C26 on
Nuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.03 on
5.2 Gadolinium Oxide Concentration—The minimum
Neutron Absorber Materials Specifications.
Gd O concentration shall be 99.8 weight % exclusive of the
2 3
Current edition approved Feb.10, 2003. Published February 2003. Originally
constituents lost on ignition as determined by Test Methods
approved in 1978. Last previous edition approved in 1997 as C 888 – 97.
2
Annual Book of ASTM Standards, Vol 02.05. C 889.
3
Annual Book of ASTM Standards, Vol 15.01.
4
Annual Book of ASTM Standards, Vol 12.01.
5
Annual Book of ASTM Standards, Vol 14.02.
6 7
Available from theAmerican National Standards Institute, 11W. 42nd St., 13th Available from Superintendent of Documents, U.S. Government Printing
Floor, New York, NY 10036. Office, Washington, DC 20402.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C888–03
5.2.1 Gadolinium Oxide Isotope Concentration—The isoto- 8.2.4 Retention of archive samples by the seller.
pic concentration of the gadolinium shall be that which is 8.3 Archive samples shall be retained for a period of time
found in naturally occurring gadolinium for the following specified by the buyer and delivered to the buyer upon request.
isotopes:
9. Inspection and Certification
Isotope Atomic %
155
9.1 The seller shall inspect the material covered by this
Gd 14.9 6 1.0
157
Gd 15.7 6 1.0
specification and shall provide the buyer with certificates of
testsshowingtheresultsofalltestingandinspectionperformed
5.3 Impurity Content:
on each lot.
...