ASTM C1689-08a
(Practice)Standard Practice for Subsampling of Uranium Hexafluoride
Standard Practice for Subsampling of Uranium Hexafluoride
SIGNIFICANCE AND USE
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 C 996 and C 787 by means of the appropriate test method (for example, Test Method C 761 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.
It is emphasized that this test guide is not meant to address conventional or nuclear criticality safety issues.
SCOPE
1.1 This practice is applicable to subsampling uranium hexafluoride (UF6), using heat liquefaction techniques, from bulk containers, obtained in conformance with C 1052, 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.
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Designation:C1689 −08a
StandardPractice 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.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Spectrochemical,Nuclear,andRadiochemicalAnalysisof
Uranium Hexafluoride
1.1 This practice is applicable to subsampling uranium
C1052Practice for Bulk Sampling of Liquid Uranium
hexafluoride (UF ), using heat liquefaction techniques, from
6
Hexafluoride
bulk containers, obtained in conformance with C1052, into
2.2 Other Documents:
smaller sample containers, which are required for laboratory
ANSI N14.1Uranium Hexafluoride: Packaging for Trans-
analyses.
3
port
1.2 The values stated in SI units are to be regarded as
ISO/DIS 7195Packaging of Uranium Hexafluoride (UF )
6
standard. No other units of measurement are included in this
4
for Transport
standard.
USEC-651The UF Manual: Good Handling Practices for
6
5
1.3 It is assumed that the liquid UF being sampled com-
Uranium Hexafluoride, latest revision
6
prises a single quality and quantity of material. This practice
doesnotaddressanyspecialadditionalarrangementthatmight 3. Terminology
be required for taking proportional or composite samples.
3.1 Terms shall be defined in accordance with Terminology
1.4 The number of samples to be taken, their nominal C859 except for the following:
3.1.1 sample bottle—the vessel (typically a 1S or 2S bottle)
sample weight, and their disposition shall be agreed upon
between the parties. into which the sample of UF is withdrawn from the container
6
for transfer to the laboratory, analysis or dispatch to the
1.5 The scope of this practice does not include provisions
customer.
for preventing criticality incidents.
3.1.2 subsample tube—the small vessel (for example, a P10
1.6 This standard does not purport to address all of the
6
tube ) into which a subsample of UF is withdrawn from the
6
safety concerns, if any, associated with its use. It is the
sample bottle for analysis of UF quality or dispatch to the
6
responsibility of the user of this standard to establish appro-
customer.
priate safety and health practices and determine the applica-
3.1.3 subsample rig—the equipment to perform the transfer
bility of regulatory limitations prior to use.
of liquid UF from the sample bottle into the subsample tube,
6
typically a vacuum manifold equipped with heating and a
2. Referenced Documents
2 liquid nitrogen trap.
2.1 ASTM Standards:
C787Specification for Uranium Hexafluoride for Enrich-
4. Summary of Practice
ment
4.1 Two methods of withdrawing a subsample of UF are
C859Terminology Relating to Nuclear Materials 6
described which differ based on safety requirements namely:
C996Specification for Uranium Hexafluoride Enriched to
235
Less Than 5 % U
C761Test Methods for Chemical, Mass Spectrometric,
3
Available fromAmerican 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), 1, ch. de
1
This practice is under the jurisdiction of ASTM Committee C26 on Nuclear la Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http://
Fuel Cycle and is the direct responsibility of Subcommittee C26.05 on Methods of www.iso.ch.
5
Test. AvailablefromUnitedStatesEnrichmentCorp.,6903RockledgeDr.,Bethesda,
Current edition approved Dec. 1, 2008. Published January 2009. Originally MD 20817, http://www.usec.com.
6
approved in 2008. Last previous edition approved in 2008 as C1689–08. DOI: Polychlorotrifluoroethylene P10 tubes are widely accepted by the industry for
10.1520/C1689-08A. subsample collection and subsequent UF quality analyses or dispatch to the
6
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or customer. Other types of subsample tubes, for example P-20, P-80 or P100 , can be
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM used for internal subsample collection and processing. Dispatch of these subsample
Standards volume information, refer to the standard’s Document Summary page on tubes may be agreed upon by buyer and seller and subject to (local) transport
the ASTM website. regulations.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C1689−08a
(1) homogenizing of liquefied UF by agitation before liquid 5. Significance and Use
6
transfer and (2) homogenizing of liquefied UF by convection
6
5.1 Uraniumhexafluorideisnormallyproducedandhandled
before liquid transfe
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:C1689–08 Designation: C 1689 – 08a
Standard Practice for
1
Subsampling of Uranium Hexafluoride
This standard is issued under the fixed designation C 1689; 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 C 1052, into smaller sample containers, which are required for laboratory analyses.
1.2It is assumed that the liquid UF
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.
1.3The1.4 The number of samples to be taken, their nominal sample weight, and their disposition shall be agreed upon between
the parties.
1.4The1.5 The scope of this practice does not include provisions for preventing criticality incidents.
1.51.6 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C787
C 787 Specification for Uranium Hexafluoride for Enrichment
C 859 Terminology Relating to Nuclear Materials
C996
235
C 996 Specification for Uranium Hexafluoride Enriched to Less Than 5 % U
C761
C 761 Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Uranium
Hexafluoride
C 1052 Practice for Bulk Sampling of Liquid Uranium Hexafluoride
2.2 Other Documents:
3
ANSI N14.1 Uranium Hexafluoride: Packaging for Transport
4
ISO/DIS 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 Terms shall be defined in accordance with Terminology C 859 except for the following:
3.1.1 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.
6
3.1.2 subsample tube—thesmallvessel(forexample,aP10tube )intowhichasubsampleofUF iswithdrawnfromthesample
6
bottle for analysis of UF quality or dispatch to the customer.
6
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 Aug. 1, 2008. Published September 2008.
Current edition approved Dec. 1, 2008. Published January 2009. Originally approved in 2008. Last previous edition approved in 2008 as C 1689 – 08.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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 (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Available from International Organization for Standardization (ISO), 1, ch. de la Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http://www.iso.ch.
5
Available from United States Enrichment Corp., 6903 Rockledge Dr., Bethesda, MD 20817, http://www.usec.com.
6
Polychlorotrifluoroethylene P10 tubes are widely accepted by the industry for subsample collection and subsequent UF quality analyses or dispatch to the customer.
6
Other types of subsample tubes, for example P-20, P-80 or P100 , can be used for internal subsample collection and processing. Dispatch of these subsample tubes may be
agreed upon by buyer and seller and subject to (local) transport regulations.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
C 1689 – 08a
3.1.3 subsample rig—the equipment to perform the transfer of liquid UF from the sample bottle into the subsample tube,
6
typica
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:C1689–08 Designation: C 1689 – 08a
Standard Practice for
1
Subsampling of Uranium Hexafluoride
This standard is issued under the fixed designation C 1689; 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 C 1052, into smaller sample containers, which are required for laboratory analyses.
1.2It is assumed that the liquid UF
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.
1.3The1.4 The number of samples to be taken, their nominal sample weight, and their disposition shall be agreed upon between
the parties.
1.4The1.5 The scope of this practice does not include provisions for preventing criticality incidents.
1.51.6 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C787
C 787 Specification for Uranium Hexafluoride for Enrichment
C 859 Terminology Relating to Nuclear Materials
C996
235
C 996 Specification for Uranium Hexafluoride Enriched to Less Than 5 % U
C761
C 761 Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Uranium
Hexafluoride
C 1052 Practice for Bulk Sampling of Liquid Uranium Hexafluoride
2.2 Other Documents:
3
ANSI N14.1 Uranium Hexafluoride: Packaging for Transport
4
ISO/DIS 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 Terms shall be defined in accordance with Terminology C 859 except for the following:
3.1.1 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.
6
3.1.2 subsample tube—thesmallvessel(forexample,aP10tube )intowhichasubsampleofUF iswithdrawnfromthesample
6
bottle for analysis of UF quality or dispatch to the customer.
6
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 Aug. 1, 2008. Published September 2008.
Current edition approved Dec. 1, 2008. Published January 2009. Originally approved in 2008. Last previous edition approved in 2008 as C 1689 – 08.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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 (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Available from International Organization for Standardization (ISO), 1, ch. de la Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http://www.iso.ch.
5
Available from United States Enrichment Corp., 6903 Rockledge Dr., Bethesda, MD 20817, http://www.usec.com.
6
Polychlorotrifluoroethylene P10 tubes are widely accepted by the industry for subsample collection and subsequent UF quality analyses or dispatch to the customer.
6
Other types of subsample tubes, for example P-20, P-80 or P100 , can be used for internal subsample collection and processing. Dispatch of these subsample tubes may be
agreed upon by buyer and seller and subject to (local) transport regulations.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
C 1689 – 08a
3.1.3 subsample rig—the equipment to perform the transfer of liquid UF from the sample bottle into the subsample tube,
6
typica
...
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