ASTM C1052-20
(Practice)Standard Practice for Bulk Sampling of Liquid Uranium Hexafluoride
Standard Practice for Bulk Sampling of Liquid Uranium Hexafluoride
SIGNIFICANCE AND USE
5.1 Uranium hexafluoride is normally produced and handled in large (typically 1- to 20-ton) quantities and must, therefore, be characterized by reference to representative samples. The quantities involved, physical properties, chemical reactivity, and hazardous nature of UF6 are such that for representative sampling, specially designed equipment must be used and operated in accordance with the most carefully controlled and stringent procedures. This practice indicates appropriate principles, equipment, and procedures currently in use for bulk sampling of liquid UF6. It is used by UF6 converters, enrichers, and fuel fabricators to review the effectiveness of existing procedures or as a guide to the design of equipment and procedures for future use.
5.2 It is emphasized that this practice is not meant to address conventional or nuclear criticality safety issues.
SCOPE
1.1 This practice covers methods for withdrawing representative samples of liquid uranium hexafluoride (UF6) from bulk quantities of the material. Such samples are then prepared for further analytical testing in accordance with Practices C1689 and C1346. Multiple different methods are used for determining compliance with the applicable commercial specification, for example Specifications C787 and C996. Methods used for compliance to each of these standards can be found in the Referenced Documents section of each respective specification.
1.2 It is assumed that the bulk liquid UF6 being sampled comprises a single quality and quantity of material. This practice does not address any special additional arrangements that might be required for taking proportional or composite samples. When the sampled bulk material is being added to UF6 residues already in a container (“heels recycle”) additional arrangements are required to avoid cross contamination of the bulk UF6, these are addressed in Specifications C787 and C996.
1.3 The number of samples to be taken, their nominal sample weight, and their disposition shall be agreed upon between the parties.
1.4 The scope of this practice does not include provisions for preventing criticality incidents.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 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:C1052 −20
Standard Practice for
1
Bulk Sampling of Liquid Uranium Hexafluoride
This standard is issued under the fixed designation C1052; 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. Referenced Documents
2
1.1 This practice covers methods for withdrawing represen- 2.1 ASTM Standards:
tative samples of liquid uranium hexafluoride (UF ) from bulk C787 Specification for Uranium Hexafluoride for Enrich-
6
quantities of the material. Such samples are then prepared for ment
further analytical testing in accordance with Practices C1689 C859 Terminology Relating to Nuclear Materials
and C1346. Multiple different methods are used for determin- C996 Specification for Uranium Hexafluoride Enriched to
235
ing compliance with the applicable commercial specification, Less Than 5 % U
for example Specifications C787 and C996. Methods used for C1346 Practice for Dissolution of UF from P-10 Tubes
6
compliance to each of these standards can be found in the C1689 Practice for Subsampling of Uranium Hexafluoride
Referenced Documents section of each respective specifica-
2.2 Other Documents:
tion.
ANSI N14.1 Uranium Hexafluoride: Packaging for Trans-
3
port
1.2 It is assumed that the bulk liquid UF being sampled
6
ISO/DIS 7195 Packaging of Uranium Hexafluoride (UF )
6
comprises a single quality and quantity of material. This
3,4
for Transport
practice does not address any special additional arrangements
USEC-651 Uranium Hexafluoride: A Manual of Good Han-
that might be required for taking proportional or composite
5
dling Practices
samples. When the sampled bulk material is being added to
UF residues already in a container (“heels recycle”) additional
6
3. Terminology
arrangements are required to avoid cross contamination of the
3.1 Definitions:
bulk UF , these are addressed in Specifications C787 and
6
3.1.1 For definitions of terms used in this practice but not
C996.
defined herein, refer to Terminology C859.
1.3 The number of samples to be taken, their nominal
3.2 Definitions of Terms Specific to This Standard:
sample weight, and their disposition shall be agreed upon
3.2.1 container, n—the bulk vessel either holding or receiv-
between the parties.
ing by transfer, the UF to be sampled; it may consist of, for
6
1.4 The scope of this practice does not include provisions
example, a fixed vessel in a UF handling plant or a cylinder to
6
for preventing criticality incidents.
be used for the transport of UF .
6
1.5 This standard does not purport to address all of the
3.2.2 sample bottle, n—the small vessel into which the
safety concerns, if any, associated with its use. It is the
sample of UF is withdrawn for transfer to the laboratory for
6
responsibility of the user of this standard to establish appro-
characterization.
priate safety, health, and environmental practices and deter-
4. Summary of Practice
mine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accor-
4.1 Two methods of withdrawing a sample are described,
dance with internationally recognized principles on standard-
namely: (1) direct withdrawal from a filled container, and (2)
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
mendations issued by the World Trade Organization Technical
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Barriers to Trade (TBT) Committee.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
1
This practice is under the jurisdiction of ASTM Committee C26 on Nuclear 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Fuel Cycle and is the direct responsibility of Subcommittee C26.02 on Fuel and Available from International Organization for Standardization (ISO), ISO
Fertile Material Specifications. Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
Current edition approved July 1, 2020. Published August 2020. Originally Geneva, Switzerland, http://www.iso.org.
5
approved in 1985. Last previous edition approved in 2014 as C1052 – 14. DOI: AvailablefromUnitedStatesEnrichmentCorp.,6903RockledgeDr.,Bethesda,
10.1520/C1052-20. MD 20817.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West 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: C1052 − 14 C1052 − 20
Standard Practice for
1
Bulk Sampling of Liquid Uranium Hexafluoride
This standard is issued under the fixed designation C1052; 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 practice covers methods for withdrawing representative samples of liquid uranium hexafluoride (UF ) from bulk
6
quantities of the material. Such samples are then prepared for further analytical testing in accordance with Practices C1689 and
C1346. Multiple different methods are used for determining compliance with the applicable commercial specification, for example
SpecificationSpecifications C787 and Specification C996. Methods used for compliance to each of these standards can be found
in the Referenced Documents section of each respective specification.
1.2 It is assumed that the bulk liquid UF being sampled comprises a single quality and quantity of material. This practice does
6
not address any special additional arrangements that might be required for taking proportional or composite samples. When the
sampled bulk material is being added to UF residues already in a container (“heels recycle”) additional arrangements are required
6
to avoid cross contamination of the bulk UF , these are addressed in the appropriate section (8.2) of Specifications C787 and C996.
6
1.3 The number of samples to be taken, their nominal sample weight, and their disposition shall be agreed upon between the
parties.
1.4 The scope of this practice does not include provisions for preventing criticality incidents.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.6 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:
C787 Specification for Uranium Hexafluoride for Enrichment
C859 Terminology Relating to Nuclear Materials
235
C996 Specification for Uranium Hexafluoride Enriched to Less Than 5 % U
C1346 Practice for Dissolution of UF from P-10 Tubes
6
C1689 Practice for Subsampling of Uranium Hexafluoride
2.2 Other Documents:
3
USEC-651 Uranium Hexafluoride: A Manual of Good Handling Practices
3
ANSI N14.1 Uranium Hexafluoride: Packaging for Transport
3,4
ISO/DIS 7195 Packaging of Uranium Hexafluoride (UF ) for Transport
6
5
USEC-651 Uranium Hexafluoride: A Manual of Good Handling Practices
1
This practice 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 Jan. 15, 2014July 1, 2020. Published February 2014August 2020. Originally approved in 1985. Last previous edition approved in 20072014 as
C1052 – 01 (2007).C1052 – 14. DOI: 10.1520/C1052-14.10.1520/C1052-20.
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.
5
Available from United States Enrichment Corp., 6903 Rockledge Dr., Bethesda, MD 20817.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Available from International Organization for Standardization (ISO), ISO Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier, Geneva,
Switzerland, http://www.iso.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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C1052 − 20
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this practice but not defined herein, refer to Terminology C859.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 container—container, n—the bulk vessel either holding or
...
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