ASTM D7219-19

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:D7219 −19
Standard Specification for
1
Isotropic and Near-isotropic Nuclear Graphites
This standard is issued under the fixed designation D7219; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* C1233Practice for Determining Equivalent Boron Contents
of Nuclear Materials
1.1 This specification covers the classification, processing,
D346 Practice for Collection and Preparation of Coke
andtypicalpropertiesofas-manufacturednucleargradegraph-
Samples for Laboratory Analysis
ite billets with dimensions sufficient to meet the designer’s
D2638Test Method for Real Density of Calcined Petroleum
requirements for fuel elements, moderator or reflector blocks,
Coke by Helium Pycnometer
in a high temperature reactor. The graphite classes specified
D4175Terminology Relating to Petroleum Products, Liquid
here may be suitable for reactor core applications where
Fuels, and Lubricants
dimensional change due to fast neutron irradiation has a
IEEE/ASTM SI 10American National Standard for Use of
significant impact on design, provided they meet the require-
theInternationalSystemofUnits(SI):TheModernMetric
ments of the ASME code.
System
1.2 The values stated in SI units are to be regarded as
2.2 ASME Standard:
standard. No other units of measurement are included in this
NQA-1 Quality Assurance Program Requirements for
standard. (See IEEE/ASTM SI 10.)
Nuclear Facilities, Sec III Div 5 Sub Sect HH sub-partA:
3
1.3 This standard does not purport to address all of the
Graphite Materials (HHA)
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
3.1 Definitions—Definitionsrelatingtothisspecificationare
mine the applicability of regulatory limitations prior to use.
given in Terminology D4175.
1.4 This international standard was developed in accor-
3.2 Definitions of Terms Specific to This Standard:
dance with internationally recognized principles on standard-
3.2.1 baking/re-baking charge, n—in carbon and graphite
ization established in the Decision on Principles for the
technology, number of billets in a baking/re-baking furnace
Development of International Standards, Guides and Recom-
run.
mendations issued by the World Trade Organization Technical
3.2.2 bulk density, n—in carbon and graphite technology,
Barriers to Trade (TBT) Committee.
mass of a unit volume of material including both permeable
2. Referenced Documents and impermeable voids.
2
3.2.3 extrusion forming lot, n—in carbon and graphite
2.1 ASTM Standards:
technology, number of billets of the same size extruded in an
C559Test Method for Bulk Density by Physical Measure-
uninterrupted sequence.
ments of Manufactured Carbon and Graphite Articles
C781PracticeforTestingGraphiteMaterialsforGas-Cooled
3.2.4 grain, n—in manufactured carbon and graphite, par-
Nuclear Reactor Components
ticle of filler material (usually coke or graphite) in the starting
C838Test Method for Bulk Density of As-Manufactured
mix formulation; also referred to as granular material, filler
Carbon and Graphite Shapes
particle,oraggregatematerial;thetermisalsousedtodescribe
the general texture of a carbon or graphite body, as in the
descriptions listed below:
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This specification is under the jurisdiction of ASTM Committee D02 on
3.2.4.1 coarse grained, adj—containing grains in the start-
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
ing mix that are substantially greater than 4 mm in size.
Subcommittee D02.F0 on Manufactured Carbon and Graphite Products.
Current edition approved Nov. 1, 2019. Published November 2019. Originally
3.2.4.2 medium coarse grained, adj—containing grains in
approved in 2005. Last previous edition approved in 2014 as D7219–08 (2014).
the starting mix that are generally less than 4 mm in size.
DOI: 10.1520/D7219-19.
2
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
3
Standards volume information, refer to the standard’s Document Summary page on Available from American Society of Mechanical Engineers (ASME), ASME
the ASTM website. International Headquarters, Two Park Ave., New York, NY 10016-5990.
*A Summary of Changes section appears at the end of this standard
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