ASTM C1689-21
(Practice)Standard Practice for Subsampling of Uranium Hexafluoride
Standard Practice for Subsampling of Uranium Hexafluoride
SIGNIFICANCE AND USE
5.1 Uranium hexafluoride is normally produced and handled in large (typically 1- to 14-ton) quantities and must, therefore be characterized by reference to representative samples. The samples are used to determine compliance with the applicable commercial Specifications C996 and C787 by means of the appropriate test method (for example, Test Method C761 and references therein). The quantities involved, physical properties, chemical reactivity, and hazardous nature of UF6 are such that for representative sampling, specially designated 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 subsampling of liquid UF6. It is used by UF6 converters, enrichers and fuel fabricators to review the effectiveness of existing procedures or to design equipment and procedures for future use. Other subsampling procedures such as UF6 vapor sampling are not directly representative of the chemical quality of liquid UF6.
5.2 It is emphasized that this test guide is not meant to address conventional or nuclear criticality safety issues, nor does it address the conditioning of subsample tubes to make them suitable for transport.
SCOPE
1.1 This practice is applicable to subsampling uranium hexafluoride (UF6), using heat liquefaction techniques, from bulk containers, obtained in conformance with Practices C1052, C1703, and C1883, into smaller sample containers, which are required for laboratory analyses.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 It is assumed that the liquid UF6 being sampled comprises a single quality and quantity of material. This practice does not address any special additional arrangement that might be required for taking proportional or composite samples.
1.4 The number of samples to be taken, their nominal sample weight, and their disposition shall be agreed upon between the parties.
1.5 The scope of this practice does not include provisions for preventing criticality incidents.
1.6 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 and health practices and determine the applicability of regulatory limitations prior to use.
1.7 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: C1689 − 21
Standard Practice for
1
Subsampling of Uranium Hexafluoride
This standard is issued under the fixed designation C1689; 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 C761 Test Methods for Chemical, Mass Spectrometric,
Spectrochemical, Nuclear, and Radiochemical Analysis of
1.1 This practice is applicable to subsampling uranium
Uranium Hexafluoride
hexafluoride (UF ), using heat liquefaction techniques, from
6
C787 Specification for Uranium Hexafluoride for Enrich-
bulk containers, obtained in conformance with Practices
ment
C1052, C1703, and C1883, into smaller sample containers,
C859 Terminology Relating to Nuclear Materials
which are required for laboratory analyses.
C996 Specification for Uranium Hexafluoride Enriched to
235
1.2 The values stated in SI units are to be regarded as
Less Than 5 % U
standard. No other units of measurement are included in this
C1052 Practice for Bulk Sampling of Liquid Uranium
standard.
Hexafluoride
1.3 It is assumed that the liquid UF being sampled com- C1703 Practice for Sampling of Gaseous Uranium
6
Hexafluoride for Enrichment
prises a single quality and quantity of material. This practice
does not address any special additional arrangement that might C1883 Practice for Sampling of Gaseous Enriched Uranium
Hexafluoride
be required for taking proportional or composite samples.
2.2 Other Documents:
1.4 The number of samples to be taken, their nominal
ANSI N14.1 Uranium Hexafluoride: Packaging for Trans-
sample weight, and their disposition shall be agreed upon
3
port
between the parties.
ISO 7195 Packaging of Uranium Hexafluoride (UF ) for
6
1.5 The scope of this practice does not include provisions
4
Transport
for preventing criticality incidents.
USEC-651 The UF Manual: Good Handling Practices for
6
5
1.6 This standard does not purport to address all of the
Uranium Hexafluoride, latest revision
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety, health, and environmental practices and deter-
3.1 Definitions:
mine the applicability of regulatory limitations prior to use.
3.1.1 Terms shall be defined in accordance with Terminol-
1.7 This international standard was developed in accor-
ogy C859 except for the following:
dance with internationally recognized principles on standard-
3.1.2 sample bottle—the vessel (typically a 1S or 2S bottle)
ization established in the Decision on Principles for the
into which the sample of UF is withdrawn from the container
6
Development of International Standards, Guides and Recom-
for transfer to the laboratory, analysis or dispatch to the
mendations issued by the World Trade Organization Technical
customer.
Barriers to Trade (TBT) Committee.
3.1.3 subsample tube—the small vessel (for example, a P10
tube) into which a subsample of UF is withdrawn from the
2. Referenced Documents 6
sample bottle for analysis of UF quality or dispatch to the
2 6
2.1 ASTM Standards:
customer.
3.1.3.1 Discussion—Polychlorotrifluoroethylene P10 tubes
are widely accepted by the industry for subsample collection
1
This practice is under the jurisdiction of ASTM Committee C26 on Nuclear
Fuel Cycle and is the direct responsibility of Subcommittee C26.05 on Methods of
Test.
3
Current edition approved Feb. 1, 2021. Published March 2021. Originally Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
approved in 2008. Last previous edition approved in 2014 as C1689 – 08a (2014). 4th Floor, New York, NY 10036, http://www.ansi.org.
4
DOI: 10.1520/C1689-21. Available from International Organization for Standardization (ISO), ISO
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Central Secretariat, Chemin de Blandonnet 8, CP 401, 1214 Vernier, Geneva,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Switzerland, https://www.iso.org.
5
Standards volume information, refer to the standard’s Document Summary page on Available from Centrus Energy Corporation, 6901 Rockledge Drive, Bethesda,
the ASTM website. MD 20817.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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C1689 − 21
and subsequent UF quality analyses or dispatch to the cus- currently in use for subsampling of liquid UF . It is used by
6 6
t
...
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: C1689 − 08a (Reapproved 2014) C1689 − 21
Standard Practice for
1
Subsampling of Uranium Hexafluoride
This standard is issued under the fixed designation C1689; 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 is applicable to subsampling uranium hexafluoride (UF ), using heat liquefaction techniques, from bulk
6
containers, obtained in conformance with Practices C1052, C1703, and C1883, into smaller sample containers, which are required
for laboratory analyses.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 It is assumed that the liquid UF being sampled comprises a single quality and quantity of material. This practice does not
6
address any special additional arrangement that might be required for taking proportional or composite samples.
1.4 The number of samples to be taken, their nominal sample weight, and their disposition shall be agreed upon between the
parties.
1.5 The scope of this practice does not include provisions for preventing criticality incidents.
1.6 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 and health practices and determine the applicability of regulatory
limitations prior to use.
1.7 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
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
C761C1052 Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of
1
This practice is under the jurisdiction of ASTM Committee C26 on Nuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.05 on Methods of Test.
Current edition approved Jan. 1, 2014Feb. 1, 2021. Published February 2014March 2021. Originally approved in 2008. Last previous edition approved in 20082014 as
C1689 – 08a.C1689 – 08a (2014). DOI: 10.1520/C1689-08aR14.10.1520/C1689-21.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C1689 − 21
Practice for Bulk Sampling of Liquid Uranium Hexafluoride
C1052C1703 Practice for Bulk Sampling of LiquidGaseous Uranium Hexafluoride for Enrichment
C1883 Practice for Sampling of Gaseous Enriched Uranium Hexafluoride
2.2 Other Documents:
3
ANSI N14.1 Uranium Hexafluoride: Packaging for Transport
4
ISO/DISISO 7195 Packaging of Uranium Hexafluoride (UF ) for Transport
6
5
USEC-651 The UF Manual: Good Handling Practices for Uranium Hexafluoride, latest revision
6
3. Terminology
3.1 Definitions:
3.1.1 Terms shall be defined in accordance with Terminology C859 except for the following:Terms shall be defined in accordance
with Terminology C859 except for the following:
3.1.2 sample bottle—the vessel (typically a 1S or 2S bottle) into which the sample of UF is withdrawn from the container for
6
transfer to the laboratory, analysis or dispatch to the customer.
3.1.3 subsample tube—the small vessel (for example, a P10 tubetube)) into which a subsample of UF is withdrawn from the
6
sample bottle for analysis of UF quality or dispatch to the customer.
6
3.1.3.1 Discussion—
Polychlorotrifluoroethylene P10 tubes are widely accepted by the industry for subsample collection and subsequent UF quality
6
analyses or dispatch to the customer. Other types of subsample tubes, for example P-20, P-80, or P100
...
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