ASTM C750-09(2014)
(Specification)Standard Specification for Nuclear-Grade Boron Carbide Powder
Standard Specification for Nuclear-Grade Boron Carbide Powder
ABSTRACT
This specification defines the chemical and physical requirements for boron carbide powder intended for a variety of nuclear applications. The powder shall be classified as: Type 1; Type 2; and Type 3. The material shall conform to the chemical composition requirements prescribed. Quality control tests, acceptance tests, referee tests, and retention of archive samples by the seller shall be performed to conform to the specified requirements.
SCOPE
1.1 This specification defines the chemical and physical requirements for boron carbide powder intended for a variety of nuclear applications. Because each application has a different need for impurity and boron requirements, three different chemical compositions of powder are specified. In using this specification, it is necessary to dictate which type of powder is intended to be used. In general, the intended applications for the various powder types are as follows:
1.1.1 Type 1—For use as particulate material in nuclear reactor core applications.
1.1.2 Type 2—Powder that will be further processed into a fabricated shape for use in a nuclear reactor core or used in non-core applications when the powder directly or indirectly may cause adverse effects on structural components, such as halide stress corrosion of stainless steel.
1.1.3 Type 3—Powder that will be used for non-core applications or special in-core applications.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:C750 −09 (Reapproved 2014)
Standard Specification for
Nuclear-Grade Boron Carbide Powder
This standard is issued under the fixed designation C750; 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 Spectrochemical Analysis of Nuclear-Grade Boron Car-
bide
1.1 This specification defines the chemical and physical
E11 Specification for Woven Wire Test Sieve Cloth and Test
requirements for boron carbide powder intended for a variety
Sieves
of nuclear applications. Because each application has a differ-
E105 Practice for Probability Sampling of Materials
ent need for impurity and boron requirements, three different
2.2 ANSI Standard:
chemical compositions of powder are specified. In using this
ANSI/ASME NQA-1 Quality Assurance Program Require-
specification, it is necessary to dictate which type of powder is
ments for Nuclear Facilities
intended to be used. In general, the intended applications for
2.3 U.S. Government Document:
the various powder types are as follows:
Title 10, Code of Federal Regulations, Energy Part 50
1.1.1 Type 1—For use as particulate material in nuclear
(10CFR 50), Domestic Licensing of Production and Uti-
reactor core applications.
lization Facilities
1.1.2 Type 2—Powder that will be further processed into a
fabricated shape for use in a nuclear reactor core or used in
3. Terminology
non-core applications when the powder directly or indirectly
3.1 Definitions of Terms Specific to This Standard:
may cause adverse effects on structural components, such as
3.1.1 buyer—organization issuing the purchase order.
halide stress corrosion of stainless steel.
3.1.2 powder lot—that quantity of boron carbide powder
1.1.3 Type 3—Powder that will be used for non-core appli-
blended together such that samples taken in accordance with
cations or special in-core applications.
theproceduresof8.1canbeconsideredasrepresentativeofthe
1.2 The values stated in SI units are to be regarded as
entire powder lot.
standard. No other units of measurement are included in this
3.1.3 seller—boron carbide powder supplier.
standard.
4. Ordering Information
2. Referenced Documents
4.1 The buyer may specify the following information on the
2.1 ASTM Standards:
order:
B527 Test Method for Determination of Tap Density of
4.1.1 Quantity (weight of delivered product).
Metallic Powders and Compounds
4.1.2 Nominal particle size, particle size range, and appli-
B822 Test Method for Particle Size Distribution of Metal
cable tolerance.
Powders and Related Compounds by Light Scattering
4.1.3 Density and method of measurement.
B923 Test Method for Metal Powder Skeletal Density by
4.1.4 Angular or spherical shape.
Helium or Nitrogen Pycnometry
4.1.5 Shape factor.
C371 Test Method for Wire-Cloth Sieve Analysis of Non-
4.1.6 Lot size.
plastic Ceramic Powders
4.1.7 Sampling requirements.
C791 Test Methods for Chemical, Mass Spectrometric, and
4.1.8 Powder type (1, 2, or 3).
4.1.9 Isotopic content ( B).
5. Chemical Composition
This specification is under the jurisdiction of ASTM Committee C26 on
Nuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.03 on
NOTE 1—B C powder is hygroscopic and certain applications require
Neutron Absorber Materials Specifications.
low-moisture content.
Current edition approved Jan. 1, 2014. Published February 2014. Originally
approved in 1974. Last previous edition approved in 2009 as C750 – 09. DOI:
10.1520/C0750-09R14. Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 4th Floor, New York, NY 10036, http://www.ansi.org.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
Standards volume information, refer to the standard’s Document Summary page on 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
the ASTM website. www.access.gpo.gov.
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C750−09 (2014)
5.1 The material shall conform to the chemical composition the application and for this reason should be specified in the
requirements prescribed in Table 1 (see Methods C791). purchase order. Recommended Practice E105 is referenced as
a guide.
5.2 When agreed upon between the buyer and the seller, the
weight loss of the powder shall not exceed 1 % when heated at 8.2 Each sample taken shall be sufficient to perform the
110°C for1hinair. following in the event they are necessary or desired by the
buyer:
6. Physical Requirements
8.2.1 Quality control tests,
8.2.2 Acceptance tests,
6.1 The nominal particle size, particle size range, and
8.2.3 Referee tests, and
applicable tolerances shall be agreed upon between the buyer
8.2.4 Retention of archive samples by the seller.
and the seller. Me
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