ASTM C785-08

Standard Specification for Nuclear-Grade Aluminum Oxide Pellets

SCOPE
1.1 This specification applies to pellets of aluminum oxide that may be ultimately used in a reactor core, for example, as filler or spacers within fuel, burnable poison, or control rods. In order to distinguish between the subject pellets and “burnable poison” pellets, it is established that the subject pellets are not intended to be used as neutron-absorbing material.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

General Information

• Status: Historical
• Publication Date: 30-Nov-2008
• 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• Replaces: ASTM C785-93e1 - Standard Specification for Nuclear-Grade Aluminum Oxide Pellets (Withdrawn 2002)
• Effective Date: 01-Dec-2008
• Referred By: ASTM C809-19 - Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Aluminum Oxide and Aluminum<brk/>Oxide-Boron Carbide Composite Pellets
• Effective Date: 01-Dec-2008

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C785 −08
StandardSpecification for
1
Nuclear-Grade Aluminum Oxide Pellets
This standard is issued under the fixed designation C785; 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 2.3 U.S. Government Document:
Code of Federal Regulations, Title 10, Part 50, Energy
1.1 This specification applies to pellets of aluminum oxide
(10CFR50) Domestic Licensing of Production and Utili-
that may be ultimately used in a reactor core, for example, as
4
zation Facilities
fillerorspacerswithinfuel,burnablepoison,orcontrolrods.In
order to distinguish between the subject pellets and “burnable
3. Terminology
poison” pellets, it is established that the subject pellets are not
3.1 Definitions—Terms shall be defined in accordance with
intended to be used as neutron-absorbing material.
Terminology C859 except for the following:
1.2 The values stated in inch-pound units are to be regarded
3.2 Definitions of Terms Specific to This Standard:
as standard. The values given in parentheses are mathematical
3.2.1 buyer—organization issuing the purchase order.
conversions to SI units that are provided for information only
3.2.2 pellet—fabricated geometric shape of aluminum oxide
and are not considered standard.
having a chemical composition as described in Section 4.
3.2.3 pellet lot—that quantity of pellets produced from one
2. Referenced Documents
aluminum oxide powder lot using one set of process param-
2
2.1 ASTM Standards:
eters whose limits have been agreed upon between the seller
C559 Test Method for Bulk Density by Physical Measure-
and the buyer.
ments of Manufactured Carbon and Graphite Articles
3.2.4 powder lot—a specified quantity of aluminum oxide
C809 Test Methods for Chemical, Mass Spectrometric, and
powder made up of powders from one or more sources,
Spectrochemical Analysis of Nuclear-Grade Aluminum
blended together such that samples taken in accordance with
Oxide and AluminumOxide-Boron Carbide Composite
7.1 can be considered as representative of the entire specified
Pellets
quantity.
C859 Terminology Relating to Nuclear Materials
3.2.5 seller—aluminum oxide pellet supplier.
C1233 Practice for Determining Equivalent Boron Contents
of Nuclear Materials
4. Chemical Composition
E105 Practice for Probability Sampling of Materials
4.1 Use analytical chemistry methods in accordance with
2.2 ANSI Standard:
Methods C809 or alternate methods agreed upon between the
ANSI/ASME NQA-1 Quality Assurance Requirements for
buyer and the seller.
3
Nuclear Facility Applications
4.2 The finished aluminum oxide pellets shall conform to
the following chemical analysis:
B O + boric acid 0.01 weight % max
2 3
1
This specification is under the jurisdiction of ASTM Committee C26 on Si 2.0 weight % max
Fe + Cr + Ni 0.6 weight % max
Nuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.03 on
Mg 1.0 weight % max
Neutron Absorber Materials Specifications.
Na 0.2 weight % max
Current edition approved Dec. 1, 2008. Published December 2008. Originally
ϵ1
Ca 0.3 weight % max
approved in 1976. Last previous edition approved in 1993 as C785 – 93 which
Hf 200 µg/g pellet max
was withdrawn May 2002 and reinstated in December 2008. DOI: 10.1520/C0785-
F 50 µg/g pellet max
08.
F + Cl + I + Br 100 µg/g pellet max
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
4
the ASTM website. AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
4th Floor, New York, NY 10036, http://www.ansi.org. www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C785 − 08
Any element impurity not listed in 4.2 shall not exceed 1 5.4.3 Cracks—No single crack shall exceed 90° of circum-
weight % as determined by emission spectroscopy. The sum of ference in length.
all impurities shall not exceed 4.0 weight %. 5.4.4 Fissures and other defects shall be evaluated with
4.2.1 The total equivalent boron content (EBC) of the respect to the criteria of 5.4.1, 5.4.2, and 5.4.3.
finished aluminum oxide pellets shall not exceed 400 mg/g on
6. Cleanliness
apelletweightbasis.ThetotalEBCisthesumoftheindividual
EBC values. Practice C1233 contains a list of elements to be
6.1 The finished pell
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation:C785–93 Designation: C 785 – 08
Standard Specification for
1
Nuclear-Grade Aluminum Oxide Pellets
This standard is issued under the fixed designation C 785; 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
´ NOTE—Paragraphs 5.1.2 and 12.1 were corrected editorially in March 1994.
1. Scope
1.1 This specification applies to pellets of aluminum oxide that may be ultimately used in a reactor core design, core, for
example, as filler or spacers within fuel, burnable poison, or control rods. In order to distinguish between the subject pellets and
“burnable poison” pellets, it is established that the subject pellets are not intended to be used as neutron-absorbing material.
1.2 ThevaluesstatedinSIinch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesaremathematical
conversions to SI units that are provided for information only and are not considered standard.
2. Referenced Documents
2
2.1 ASTM Standards:
C 559 Test Method for Bulk Density by Physical Measurements of Manufactured Carbon and Graphite Articles
C 809 Test Methods for Chemical, Mass Spectrometric, and SpectrochemicalAnalysis of Nuclear-GradeAluminum Oxide and
AluminumOxide-Boron Carbide Composite Pellets
C 859 Terminology Relating to Nuclear Materials
E 105 Practice for Probability Sampling ofOf Materials
2.2 ANSI Standard:
3
ANSI/ASME NQA-1 Quality Assurance Program Requirements for Nuclear FacilitiesFacility Applications
2.3 U.S. Government Document:
4
Code of Federal Regulations,Title 10, Part 50, Energy (10CFR50) Domestic Licensing of Production and Utilization Facilities
3. Terminology
3.1 Definitions—Terms shall be defined in accordance with Terminology C 859 except for the following:
3.2 Definitions of Terms Specific to This Standard:
3.2.1 buyer—organization issuing the purchase order.
3.2.2 pellet—fabricated geometric shape of aluminum oxide having a chemical composition as described in Section 4.
3.2.3 pellet lot—that quantity of pellets produced from one aluminum oxide powder lot using one set of process parameters
whose limits have been agreed upon between the seller and the buyer.
3.2.4 powder lot—a specified quantity of aluminum oxide powder made up of powders from one or more sources, blended
together such that samples taken in accordance with 7.1 can be considered as representative of the entire specified quantity.
3.2.5 seller—aluminum oxide pellet supplier.
1
ThisspecificationisunderthejurisdictionofASTMCommitteeC-26onNuclearFuelCycleandisthedirectresponsibilityofSubcommitteeC26.03onNeutronAbsorber
Materials Specifications.
Current edition approved Nov. 15, 1993. Published February 1994. Originally published as C785–76. Last previous edition C785–87.
1
ThisspecificationisunderthejurisdictionofASTMCommitteeC26onNuclearFuelCycleandisthedirectresponsibilityofSubcommitteeC26.03onNeutronAbsorber
Materials Specifications.
´1
Current edition approved Dec. 1, 2008. Published December 2008. Originally approved in 1976. Last previous edition approved in 1993 as C 785 – 93 which was
withdrawn May 2002 and reinstated in December 2008.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
, Vol 15.01.volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Annual Book of ASTM Standards, Vol 12.01.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Annual Book of ASTM Standards, Vol 14.02.
4
Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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C785–08
4. Chemical Composition
4.1 Use analytical chemistry methods in accordance with Methods C 809 or demonstrated alternate methods agreed upon
between the buyer and the seller.
4.2 The finished aluminum oxide pellets shall conform to the following chemical analysis:
B O + boric acid 0.01 weight % max
2 3
Si 2.0 weight % max
Fe+Cr+Ni 0.6 weight % max
Mg 1.0 weight % max
Na 0.2 weight % max
Ca 0.3 weight % max
...