ASTM C787-20
(Specification)Standard Specification for Uranium Hexafluoride for Enrichment
Standard Specification for Uranium Hexafluoride for Enrichment
ABSTRACT
This specification covers uranium hexafluoride intended for feeding to an enrichment plant. Plants preparing uranium hexafluoride will have to control the purity of process chemicals and also employ low corrosion equipment to be successful in meeting the specifications for most impurities. Chemical and isotopic analysis of the material shall conform to the requirements prescribed.
SCOPE
1.1 This specification covers uranium hexafluoride (UF6) intended for feeding to an enrichment plant. Included are specifications for UF6 derived from unirradiated natural uranium and UF6 derived from irradiated uranium that has been reprocessed and converted to UF6 for enrichment and subsequent reuse. The objectives of this specification are twofold: (1) to define the impurity and uranium isotope limits for Commercial Natural UF6 feedstock, and (2) to define additional limits for Reprocessed UF6 (or any mixture of Reprocessed UF6 and Commercial Natural UF6). For such UF6, special provisions may be needed to ensure that no extra hazard arises to the work force, process equipment, or the environment.
1.2 The scope of this specification does not comprehensively cover all provisions for preventing criticality accidents or requirements for health and safety or for shipping. Observance of this specification does not relieve the user of the obligation to conform to all international, federal, state, and local regulations for processing, shipping, or in any other way using UF6 (for example, see TID-7016, DP-532, ORNL-NUREG-CSD-6, and DOE O 474.1).
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.
1.4 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.
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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:C787 −20
Standard Specification for
1
Uranium Hexafluoride for Enrichment
This standard is issued under the fixed designation C787; 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 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This specification covers uranium hexafluoride (UF )
6
C761Test Methods for Chemical, Mass Spectrometric,
intended for feeding to an enrichment plant. Included are
Spectrochemical,Nuclear,andRadiochemicalAnalysisof
specifications for UF derived from unirradiated natural ura-
6
Uranium Hexafluoride
nium and UF derived from irradiated uranium that has been
6
C859Terminology Relating to Nuclear Materials
reprocessed and converted to UF for enrichment and subse-
6
C996Specification for Uranium Hexafluoride Enriched to
quent reuse. The objectives of this specification are twofold:
235
Less Than 5% U
(1) to define the impurity and uranium isotope limits for
C1052Practice for Bulk Sampling of Liquid Uranium
Commercial Natural UF feedstock, and (2) to define addi-
6
Hexafluoride
tional limits for Reprocessed UF (or any mixture of Repro-
6
C1295Test Method for Gamma Energy Emission from
cessed UF and Commercial Natural UF ). For such UF ,
6 6 6
Fission and Decay Products in Uranium Hexafluoride and
specialprovisionsmaybeneededtoensurethatnoextrahazard
Uranyl Nitrate Solution
arises to the work force, process equipment, or the environ-
C1703 Practice for Sampling of Gaseous Uranium
ment.
Hexafluoride for Enrichment
3
2.2 ANSI Standard:
1.2 The scope of this specification does not comprehen-
N14.1Packaging of Uranium Hexafluoride for Transport
sively cover all provisions for preventing criticality accidents
4
2.3 U.S. Government Documents:
or requirements for health and safety or for shipping. Obser-
ORO-671-1Inspection, Weighing, and Sampling of Ura-
vance of this specification does not relieve the user of the
nium Hexafluoride Cylinders, Procedures for Handling
obligation to conform to all international, federal, state, and
and Analysis of Uranium Hexafluoride, Vol. 1, latest
local regulations for processing, shipping, or in any other way
revision
using UF (for example, see TID-7016, DP-532, ORNL-
6
TID-7016 (ORNL-NUREG-CSD-6)Nuclear Safety Guide,
NUREG-CSD-6, and DOE O 474.1).
Rev. 2
DP-532Handbook of Nuclear Safety
1.3 The values stated in SI units are to be regarded as
DOE O 474.1 Control and Accountability of Nuclear
standard. The values given in parentheses after SI units are
Materials, DOE Directive
providedforinformationonlyandarenotconsideredstandard.
5
2.4 Other Document:
1.4 This international standard was developed in accor-
USEC-651The UF Manual: Good Handling Practices for
6
dance with internationally recognized principles on standard-
Uranium Hexafluoride United States Enrichment Corpo-
ization established in the Decision on Principles for the
ration Report, latest revision
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Barriers to Trade (TBT) Committee.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
1
This specification is under the jurisdiction of ASTM Committee C26 on 4th Floor, New York, NY 10036, http://www.ansi.org.
4
NuclearFuelCycleandisthedirectresponsibilityofSubcommitteeC26.02onFuel Available from U.S. Government Printing Office, Superintendent of
and Fertile Material Specifications. Documents, 732 N. Capitol St., NW, Washington, DC 20401-0001, http://
Current edition approved March 1, 2020. Published April 2020. Originally www.access.gpo.gov.
5
approved in 1976. Last previous edition approved in 2015 as C787–15. DOI: Available from Centrus Energy Corporation, 6901 Rockledge Drive, Bethesda,
10.1520/C0787-20. MD 20817.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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C787−20
3. Terminology to prevent a vigorous reaction with UF upon heating or with
6
stronger-fluorinating agents which may be present in enrich-
3.1 Definitions:
ment plants. It is essential that contamination of the UF
6
3.1.1 Terms shall be defined in accordance with Terminol-
c
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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.
Designation: C787 − 15 C787 − 20
Standard Specification for
1
Uranium Hexafluoride for Enrichment
This standard is issued under the fixed designation C787; 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
1.1 This specification covers uranium hexafluoride (UF ) intended for feeding to an enrichment plant. Included are
6
specifications for UF derived from unirradiated natural uranium and UF derived from irradiated uranium that has been
6 6
reprocessed and converted to UF for enrichment and subsequent reuse. The objectives of this specification are twofold: (1) Toto
6
define the impurity and uranium isotope limits for Commercial Natural UF feedstock;feedstock, and (2) Toto define additional
6
limits for Reprocessed UF (or any mixture of Reprocessed UF and Commercial Natural UF ). For such UF , special provisions
6 6 6 6
may be needed to ensure that no extra hazard arises to the work force, process equipment, or the environment.
1.2 The scope of this specification does not comprehensively cover all provisions for preventing criticality accidents or
requirements for health and safety or for shipping. Observance of this specification does not relieve the user of the obligation to
conform to all international, federal, state, and local regulations for processing, shipping, or in any other way using UF (see, for
6
(for example, see TID-7016, DP-532, ORNL-NUREG-CSD-6, and DOE O 474.1).
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.after
SI units are provided for information only and are not considered standard.
1.4 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C761 Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Uranium
Hexafluoride
C859 Terminology Relating to Nuclear Materials
235
C996 Specification for Uranium Hexafluoride Enriched to Less Than 5 % U
C1052 Practice for Bulk Sampling of Liquid Uranium Hexafluoride
C1295 Test Method for Gamma Energy Emission from Fission and Decay Products in Uranium Hexafluoride and Uranyl Nitrate
Solution
C1703 Practice for Sampling of Gaseous Uranium Hexafluoride for Enrichment
3
2.2 ANSI Standard:
N14.1 Packaging of Uranium Hexafluoride for Transport
4
2.3 U.S. Government Documents:
Inspection, Weighing, and Sampling of Uranium Hexafluoride Cylinders, Procedures for Handling and Analysis of Uranium
Hexafluoride, Vol. 1,ORO-671-1 Department of Energy Report ORO-671-1, latest revisionInspection, Weighing, and
Sampling of Uranium Hexafluoride Cylinders, Procedures for Handling and Analysis of Uranium Hexafluoride, Vol. 1, latest
revision
1
This specification is under the jurisdiction of ASTM Committee C26 on Nuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.02 on Fuel and Fertile
Material Specifications.
Current edition approved July 1, 2015March 1, 2020. Published July 2015April 2020. Originally approved in 1976. Last previous edition approved in 20112015 as
C787 – 11.C787 – 15. DOI: 10.1520/C0787-15.10.1520/C0787-20.
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American National Standards Institute, 11 W. 42nd St., 13thInstitute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.10036, http://www.ansi.org.
4
Available from Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.Superintendent of Documents, 732 N. Capitol St., NW,
Washington, DC 20401-0001, http://www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C787 − 20
The UF Manual: Good Handling Practices for Uranium Hexafluoride, United States Enrichment Corporation Report
6
5
USEC-651, latest revisio
...
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