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ASTM C1539-08

(Test Method)

Standard Test Method for Determination of Technetium-99 in Uranium Hexafluoride by Liquid Scintillation Counting

Standard Test Method for Determination of Technetium-99 in Uranium Hexafluoride by Liquid Scintillation Counting

SIGNIFICANCE AND USE
Uranium hexafluoride is a basic material used to prepare nuclear reactor fuel. To be suitable for this purpose, the material must meet the criteria for technetium composition. This test method is designed to determine whether the material meets the requirements described in Specifications C 787 and C 996.
Using the specified instrumentation and parameters, this method has a lower detection limit of 0.0004 μgTc/gU.
Note 1—Different instrumentation or parameters may provide varying detection limits, as calculated in 11.4.
SCOPE
1.1 This test method is a quantitative method used to determine technetium-99 (99Tc) in uranium hexafluoride (UF6) by liquid scintillation counting.
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 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.

General Information

Status
Historical
Publication Date
30-Jun-2008
ICS
71.040.01 - Analytical chemistry in general
Technical Committee
C26 - Nuclear Fuel Cycle
Drafting Committee
C26.05 - Methods of Test
Current Stage
Ref Project

Relations

Replaces
ASTM C1539-02 - Standard Test Method for Determination of Technetium-99 in Uranium Hexafluoride by Liquid Scintillation Counting (Withdrawn 2008)
Effective Date
01-Jul-2008
Referred By
ASTM C761-18 - Standard Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Uranium Hexafluoride
Effective Date
01-Jul-2008

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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C1539 −08
StandardTest Method for
Determination of Technetium-99 in Uranium Hexafluoride by
1
Liquid Scintillation Counting
This standard is issued under the fixed designation C1539; 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 isotope in a given cocktail and vial combination is developed
by counting a series of standards containing the same activity
1.1 This test method is a quantitative method used to
99 of that isotope, but each with different quench. Sample quench
determine technetium-99 ( Tc) in uranium hexafluoride (UF )
6
is typically quantified by a variety of parameters.
by liquid scintillation counting.
1.2 The values stated in SI units are to be regarded as 4. Summary of Test Method
standard. No other units of measurement are included in this
4.1 Ameasuredportionofhydrolyzeduraniumhexafluoride
standard.
(UF ) containing approximately 0.8 to 1.2 g of uranium or a
6
1.3 This standard does not purport to address all of the
volume of sample less than or equal to 30 mLis transferred to
safety concerns, if any, associated with its use. It is the
a centrifuge tube. The uranium is precipitated using ammo-
responsibility of the user of this standard to establish appro-
niumhydroxide.Aftercentrifuging,thedecantedsupernatantis
priate safety and health practices and determine the applica-
acidified with sulfuric acid and extracted with tributyl phos-
bility of regulatory limitations prior to use.
phate.An aliquot of the extract is transferred to a scintillation
vial, where stannous chloride in hydrochloric acid and liquid
99
2. Referenced Documents
scintillation cocktail are added. The Tc beta activity is then
2
determined by liquid scintillation counting.
2.1 ASTM Standards:
C787Specification for Uranium Hexafluoride for Enrich-
5. Significance and Use
ment
C996Specification for Uranium Hexafluoride Enriched to
5.1 Uraniumhexafluorideisabasicmaterialusedtoprepare
235
Less Than 5 % U nuclear reactor fuel. To be suitable for this purpose, the
C1215Guide for Preparing and Interpreting Precision and material must meet the criteria for technetium composition.
Bias Statements in Test Method Standards Used in the Thistestmethodisdesignedtodeterminewhetherthematerial
Nuclear Industry meets the requirements described in Specifications C787 and
C996.
2.2 Other Document:
USEC-651 Uranium Hexafluoride: A Manual of Good
5.2 Usingthespecifiedinstrumentationandparameters,this
3
Handling Practices
method has a lower detection limit of 0.0004 µgTc/gU.
NOTE 1—Different instrumentation or parameters may provide varying
3. Terminology
detection limits, as calculated in 11.4.
3.1 Definitions:
6. Apparatus
3.1.1 quench standard curve—a relationship between
4
6.1 Liquid Scintillation Counter, with alpha/beta discrimi-
sample quench and detection efficiency.Aquench curve for an
nation and enhanced low level discrimination over the entire
energy range of 0 to 2000 keV.
1
ThistestmethodisunderthejurisdictionofASTMCommitteeC26onNuclear
6.2 Centrifuge.
Fuel Cycle and is the direct responsibility of Subcommittee C26.05 on Methods of
Test.
6.3 Analytical Balance, 1 mg sensitivity.
CurrenteditionapprovedJuly1,2008.PublishedJuly2008.Originallyapproved
6.4 Separatory Funnel, 125 mL volume.
in 2002. Last previous edition approved in 2002 as C1539–02 which was
withdrawn January 2008 and reinstated in July 2008. DOI: 10.1520/C1539-08.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Thesolesourceofsupplyoftheapparatusknowntothecommitteeatthistime
Standards volume information, refer to the standard’s Document Summary page on is Packard Tri-Carb Model 1905AB/LA. If you are aware of alternative suppliers,
the ASTM website. please provide this information to ASTM International Headquarters. Your com-
3
Available from U.S. Enrichment Corporation, 6903 Rockledge Drive, ments will receive careful consideration at a meeting of the responsible technical
1
Bethesda, MD 20817. committee, which you may attend.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1539−08
6.5 Liquid Scintillation Vials, 20 mL. 9. Procedure
6.6 Centrifuge Tubes with Caps, 50 mL.
9.1 Transfer an aliquot up to 30 mLof one of the following
solutions, as applicable, to a 50 mL centrifuge tube:
6.7 Laboratory Wipes, lint free disposable.
9.1.1 Hydrolyzed UF Sample—Unknown UF sample hy-
6 6
7. Reagents and Materials
drolyzed in water.
7.1 Puri
...

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:C1539–02 Designation: C 1539 – 08
Standard Test Method for
Determination of Technetium-99 in Uranium Hexafluoride by
1
Liquid Scintillation Counting
This standard is issued under the fixed designation C 1539; 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
99
1.1 This test method is a quantitative method used to determine technetium-99 ( Tc) in uranium hexafluoride (UF ) by liquid
6
scintillation counting.
1.2
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 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:
C 787 Specification for Uranium Hexafluoride for Enrichment
235
C 996 Specification for Uranium Hexafluoride Enriched to Less that 5%Than 5 % U
C 1215 Guide for Preparing and Interpreting Precision and Bias Statements in Test Method Standards Used in the Nuclear
Industry
2.2 Other Document:
3
USEC-651 Uranium Hexafluoride: A Manual of Good Handling Practices
3. Terminology
3.1Definitions:
3.1 Definition:
3.1.1 quench standard curve—a relationship between sample quench and detection efficiency.Aquench curve for an isotope in
a given cocktail and vial combination is developed by counting a series of standards containing the same activity of that isotope,
but each with different quench. Sample quench is typically quantified by a variety of parameters.
4. Summary of Test Method
4.1 A measured portion of hydrolyzed uranium hexafluoride (UF ) containing approximately 0.8 to 1.2 g of uranium or a
6
volume of sample less than or equal to 30 mL is transferred to a centrifuge tube. The uranium is precipitated using ammonium
hydroxide. After centrifuging, the decanted supernatant is acidified with sulfuric acid and extracted with tributyl phosphate. An
aliquot of the extract is transferred to a scintillation vial, where stannous chloride in hydrochloric acid and liquid scintillation
99
cocktail are added. The Tc beta activity is then determined by liquid scintillation counting.
5. Significance and Use
5.1 Uranium hexafluoride is a basic material used to prepare nuclear reactor fuel. To be suitable for this purpose, the material
must meet the criteria for technetium composition. This test method is designed to determine whether the material meets the
requirements described in Specifications C 787 and C 996.
5.2 Using the specified instrumentation and parameters, this method has a lower detection limit of 0.0004 µgTc/gU.
1
This test method is under the jurisdiction ofASTM Committee C26 on Nuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.05 on Methods of Test.
Current edition approved July 10, 2002. Published August 2002.
Current edition approved July 1, 2008. Published July 2008. Originally approved in 2002. Last previous edition approved in 2002 as C 1539 – 02 which was withdrawn
January 2008 and reinstated `ın July 2008.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
, Vol 12.01.volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from U.S. Enrichment Corporation, 6903 Rockledge Drive, Bethesda, MD 20817.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C1539–08
NOTE 1—Different instrumentation or parameters may provide varying detection limits, as calculated in 11.4.
6. Apparatus
4
6.1 Liquid Scintillation Counter, , with alpha/beta discrimination and enhanced low level discrimination over the entire energy
range of 0 to 2000 keV.
6.2 Centrifuge.
6.3 Analytical Balance, 1 mg sensitivity.
6.4 Separatory Funnel, 125 mL volume.
6.5 Liquid Scintillation Vials,20mL.
6.6 Centrifuge Tubes with Caps,50mL.
6.7 Laboratory Wipes, lint free disposable.
7. Reagents and Materials
7.1 Purity of Reagents—Reagent grade chemicals shall be used in all tests. Unless otherwise indicated, it is in
...

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3.2 This guide should be adapted to site specific circumstance.
SCOPE
1.1 This guide covers the use of oil spill dispersants to assist in the control of oil spills. The guide is written with the goal of minimizing the environmental impacts of oil spills; this goal is the basis on which the recommendations are made. Aesthetic and socioeconomic factors are not considered, although these and other factors are often important in spill response.  
1.2 Spill responders have available several means to control or clean up spilled oil. Chemical dispersants should be given equal consideration with other spill countermeasures.  
1.3 This is a general guide only. Oil, as used in this guide, includes crude oils and refined petroleum products. Differences between individual dispersants or between different oil products are not considered. The dispersibility of the oil with the chosen dispersant should be evaluated.  
1.4 The guide is organized by habitat type, for example, small ponds and lakes, rivers and streams, and land. It considers the use of dispersants primarily to protect habitats from impact (or to minimize impacts).  
1.5 This guide applies only to freshwater and other inland environments. It does not consider the direct application of dispersants to subsurface waters.  
1.6 In making dispersant use decisions, appropriate government authorities should be consulted as required by law.  
1.7 This guide does not address getting regulatory approval.  
1.8 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.9 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.  
1.10 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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  • Guide
    3 pages
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ASTM
ASTM C596-23(Test Method)
Standard Test Method for Drying Shrinkage of Mortar Containing Hydraulic Cement

SIGNIFICANCE AND USE
4.1 This test method establishes a selected set of conditions of temperature, relative humidity and rate of evaporation of the environment to which a mortar specimen of stated composition shall be subjected for a specified period of time during which its change in length is determined and designated “drying shrinkage.”  
4.2 The drying shrinkage of mortar as determined by this test method has a linear relation to the drying shrinkage of concrete made with the same cement and exposed to the same drying conditions.4 Hence this test method may be used when it is desired to develop data on the effect of a hydraulic cement on the drying shrinkage of concrete made with that cement.
SCOPE
1.1 This test method determines the change in length on drying of mortar bars containing hydraulic cement and graded standard sand.  
1.2 The values stated in SI units are to be regarded as standard. When combined standards are referenced, the selection of measurement system is at the user’s discretion subject to the requirements of the referenced standard.  
1.3 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. Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure).2  
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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  • Standard
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ASTM
ASTM D1751-23(Specification)
Standard Specification for Preformed Expansion Joint Filler for Concrete Paving and Structural Construction (Nonextruding and Resilient Asphalt Types)

SCOPE
1.1 This specification covers preformed expansion joint filler having relatively little extrusion and substantial recovery after release from compression.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
Note 1: Attention is called to Specifications D1752 and D994/D994M.  
1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the 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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  • Technical specification
    2 pages
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