ASTM C1052-96

Standard Practice for Bulk Sampling of Liquid Uranium Hexafluoride

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 used for determining compliance with the applicable commercial specification, for example Specification C 787 and Specification C 996.
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, or when the sampled bulk material is being added to UF6 residues already in a container ("heels recycle").
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Jun-2001
• ICS: 27.120.30 - Fissile materials and nuclear fuel technology
• Technical Committee: C26 - Nuclear Fuel Cycle
• Drafting Committee: C26.02 - Fuel and Fertile Material Specifications

Relations

• Replaced By: ASTM C1052-01 - Standard Practice for Bulk Sampling of Liquid Uranium Hexafluoride
• Effective Date: 10-Jun-2001

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NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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: C 1052 – 96
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Practice for
1
Bulk Sampling of Liquid Uranium Hexafluoride
This standard is issued under the fixed designation C 1052; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This practice covers methods for withdrawing represen- 3.1 Definitions of Terms Specific to This Standard:
tative samples of liquid uranium hexafluoride (UF ) from bulk
3.1.1 container—the bulk vessel either holding or receiving
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quantities of the material. Such samples are used for determin- by transfer, the UF to be sampled; it may consist of, for
6
ing compliance with the applicable commercial specification,
example, a fixed vessel in a UF handling plant or a cylinder to
6
for example Specification C 787 and Specification C 996. be used for the transport of UF .
6
1.2 It is assumed that the bulk liquid UF being sampled
3.1.2 sample bottle—the small vessel into which the sample
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comprises a single quality and quantity of material. This of UF is withdrawn for transfer to the laboratory for charac-
6
practice does not address any special additional arrangements
terization.
that might be required for taking proportional or composite
samples, or when the sampled bulk material is being added to 4. Summary of Practice
UF residues already in a container (“heels recycle”).
6
4.1 Two methods of withdrawing a sample are described,
1.3 The number of samples to be taken, their nominal
namely: (1) direct withdrawal from a filled container and (2)
sample weight, and their disposition shall be agreed upon
withdrawal from the inlet-line during the filling of a container
between the parties.
by liquid transfer. The first method involves tilting or turning
1.4 The scope of this practice does not include provisions
the container in such a way that its valve is below the surface
for preventing criticality incidents.
of the liquefied UF , and dependent on the equipment, this
6
1.5 This standard does not purport to address all of the
requires that the container holds more than a specified mini-
safety concerns, if any, associated with its use. It is the
mum quantity of UF . Liquid UF is withdrawn into a
6 6
responsibility of the user of this standard to establish appro-
graduated volume and then transferred to the respective sample
priate safety and health practices and determine the applica-
bottle(s). In the second method, a small proportion of the UF
6
bility of regulatory limitations prior to use.
flowing from one container to another is withdrawn into a
graduated volume and then transferred to the respective sample
2. Referenced Documents
bottle(s).
2.1 ASTM Standards:
4.2 For both methods of sampling, the presence of residues
C 787 Specification for Uranium Hexafluoride for Enrich-
may have significant implications for the quality of the UF .
6
2
ment
For safety and quality reasons, containers and bottles shall be
C 996 Specification for Uranium Hexafluoride Enriched to
clean, dry, and empty before filling.
235 2
Less Than 5 % U
4.3 Various types of sample bottles are in use and are
2.2 Other Documents:
described in detail in the applicable national and international
USEC-651 Uranium Hexafluoride: A Manual of Good Han-
standards, for example, ANSI N14.1 and ISO/DIS 7195. For a
3
dling Practices
given type of sample bottle, the detailed configuration, for
ANSI N14.1 Uranium Hexafluoride: Packaging for Trans-
example, valve orientation, terminal fittings, and the like, may
4
port
vary. Hence, the type and configuration of bottles to be used for
ISO/DIS 7195 Packaging of Uranium Hexafluoride (UF )
6
the withdrawal of samples shall be agreed upon between the
4
for Transport
parties.
1 5. Significance and Use
This practice is under the jurisdiction of ASTM Committee C-26 on Nuclear
Fuel Cycle and is the direct responsibility of Subcommittee C26.02 on Fuel and
5.1 Uranium hexafluoride is normally produced and handled
Fertile Material Specifications.
in large (typically 1- to 14-ton) quantities and must, therefore,
Current edition approved July 10, 1996. Published September 1996. Originally
be characterized by reference to representative samples. The
published as C 1052 – 85. Last previous edition C 1052 – 92.
2
Annual Book of ASTM Standards, Vol 12.01.
quantities involved, physical properties, chemical reactivity,
3
Available from United States Enrichment Corp., 6903 Rockledge Dr., Bethesda,
and hazardous nature of UF are such that for representative
6
MD 20817.
...