ASTM C787-03e2

Standard Specification for Uranium Hexafluoride for Enrichment

SCOPE
1.1 This specification covers uranium hexafluoride (UF6) intended for feeding to an enrichment plant. Included are specifications for UF6 derived from unirradiated natural uranium and UF6 derived from irradiated uranium that has been reprocessed and converted to UF6 for enrichment and subsequent reuse. The objectives of this specification are twofold: (1) To define the impurity and uranium isotope limits for Commercial Natural UF6 feedstock so that the corresponding enriched uranium is essentially equivalent to enriched uranium made entirely from virgin natural UF6; and (2) To define additional limits for Reprocessed UF 6 (or any mixture of Reprocessed UF6 and Commercial Natural UF6). For such UF6, special provisions may be needed to ensure that no extra hazard arises to the work force, process equipment, or the environment.
1.2 The scope of this specification does not comprehensively cover all provisions for preventing criticality accidents or requirements for health and safety or for shipping. Observance of this specification does not relieve the user of the obligation to conform to all international, federal, state, and local regulations for processing, shipping, or in any other way using UF6 (see, for example, TID-7016, DP-532, ORNL-NUREG-CSD-6, and DOE O 474.1).
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 09-Jun-2003
• 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

• Replaces: ASTM C787-03e1 - Standard Specification for Uranium Hexafluoride for Enrichment
• Effective Date: 10-Jun-2003
• Replaced By: ASTM C787-06 - Standard Specification for Uranium Hexafluoride for Enrichment
• Effective Date: 01-Jan-2006
• Referred By: ASTM C1689-21 - Standard Practice for Subsampling of Uranium Hexafluoride
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1636-22 - Standard Guide for Determination of Uranium-232 in Uranium Hexafluoride
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1295-15 - Standard Test Method for Gamma Energy Emission from Fission and Decay Products in Uranium Hexafluoride and Uranyl Nitrate Solution
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1428-18(2023) - Standard Test Method for Isotopic Analysis of Uranium Hexafluoride by Single–Standard Gas Source Multiple Collector Mass Spectrometer Method
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1842-16 - Standard Test Method for The Analysis of Boron and Silicon in Uranium Hexfluoride via Fourier-Transform Infrared (FTIR) Spectroscopy
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1346-19 - Standard Practice for Dissolution of UF<inf>6</inf> from P-10 Tubes
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1913-21 - Standard Practice for Sampling Gaseous Uranium Hexafluoride Using Zeolite in Single-Use Destructive Assay Sampler
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1413-18 - Standard Test Method for Isotopic Analysis of Hydrolyzed Uranium Hexafluoride and Uranyl Nitrate Solutions by Thermal Ionization Mass Spectrometry
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1561-10(2016) - Standard Guide for Determination of Plutonium and Neptunium in Uranium Hexafluoride and U-Rich Matrix by Alpha Spectrometry
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1647-20 - Standard Practice for Removal of Uranium or Plutonium, or both, for Impurity Assay in Uranium or Plutonium Materials
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1883-19 - Standard Practice for Sampling of Gaseous Enriched Uranium Hexafluoride
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1052-20 - Standard Practice for Bulk Sampling of Liquid Uranium Hexafluoride
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1880-19 - Standard Practice for Sampling Gaseous Uranium Hexafluoride using Alumina Pellets
• Effective Date: 10-Jun-2003

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
e2
Designation: C 787 – 03
Standard Specification for
1
Uranium Hexafluoride for Enrichment
This standard is issued under the fixed designation C 787; 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
e NOTE—The table in Section 5.4 was corrected editorially in December 2004.
2
e NOTE—Editorial corrections were made in 5.5.1 and 5.5.2 in February 2005.
2
1. Scope C 859 Terminology Relating to Nuclear Materials
C 996 Specification for Uranium Hexafluoride Enriched to
1.1 This specification covers uranium hexafluoride (UF )
6
235 2
Less Than 5% U
intended for feeding to an enrichment plant. Included are
C 1052 Practice for Bulk Sampling of Liquid Uranium
specifications for UF derived from unirradiated natural ura-
6
2
Hexafluoride
nium and UF derived from irradiated uranium that has been
6
C 1295 Test Method for Gamma Energy Emission from
reprocessed and converted to UF for enrichment and subse-
6
2
Fission Products in Uranium Hexafluoride
quent reuse. The objectives of this specification are twofold:
2.2 ANSI Standard:
(1) To define the impurity and uranium isotope limits for
3
N14.1 Packaging of Uranium Hexafluoride for Transport
Commercial Natural UF feedstock so that the corresponding
6
2.3 U.S. Government Documents:
enriched uranium is essentially equivalent to enriched uranium
Inspection, Weighing, and Sampling of Uranium Hexafluo-
made entirely from virgin natural UF ; and (2) To define
6
ride Cylinders, Procedures for Handling and Analysis of
additional limits for Reprocessed UF (or any mixture of
6
Uranium Hexafluoride, Vol. 1, Department of Energy
Reprocessed UF and Commercial Natural UF ). For such
6 6
4
Report ORO-671-1, latest revision
UF , special provisions may be needed to ensure that no extra
6
hazard arises to the work force, process equipment, or the
The UF Manual: Good Handling Practices for Uranium
6
environment.
Hexafluoride, United States Enrichment Corporation Re-
1.2 The scope of this specification does not comprehen-
5
port USEC-651, latest revision
sively cover all provisions for preventing criticality accidents
NuclearSafetyGuide,U.S.NuclearRegulatoryCommission
or requirements for health and safety or for shipping. Obser-
Report TID-7016, Rev. 2, 1978, and ORNL-NUREG-
vance of this specification does not relieve the user of the
4
CSD-6
obligation to conform to all international, federal, state, and
Clarke, H. K., Handbook of Nuclear Safety, Department of
local regulations for processing, shipping, or in any other way
4
Energy Report DP-532
using UF (see, for example, TID-7016, DP-532, ORNL-
6
Control and Accountability of Nuclear Materials, DOE
NUREG-CSD-6, and DOE O 474.1).
4
Directive O 474.1
1.3 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
3. Terminology
only.
3.1 Definitions of Terms Specific to This Standard—Terms
2. Referenced Documents shall be defined in accordance withTerminology C 859, except
for the following:
2.1 ASTM Standards:
3.1.1 Commercial Natural UF —UF from natural unirra-
6 6
C 761 Test Methods for Chemical, Mass Spectrometric,
235
diated uranium (containing 0.711 6 0.004 g U per 100 g U).
Spectrochemical, Nuclear, and Radiochemical Analysis of
2
Uranium Hexafluoride
1 3
This specification is under the jurisdiction of ASTM Committee C26 on Available from American National Standards Institute, 11 W. 42nd St., 13th
Nuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.02 on Fuel Floor, New York, NY 10036.
4
and Fertile Material Specifications. Available from Superintendent of Documents, U.S. Government Printing
Current edition approved June 10, 2003. Published September 2003. Originally Office, Washington, DC 20402.
5
approved in 1976. Last previous edition approved in 1996 as C 787 – 96. Available from United States Enrichment Corporation, 6903 Rockledge Drive,
2
Annual Book of ASTM Standards, Vol 12.01. Bethesda, MD 20817.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
e2
C787–03
3.1.1.1 Discussion—It is recognized that some contamina- 4.5.1 ThetotalalphaactivityfromNpandPuinthecylinder
6
tion with reprocessed uranium may occur during routine shall be limited to 25 000 Bq/kgU (1.5 3 10 disintegrations
processing. This is acceptable provided that the UF meets the per minute per kilogram of uranium). This criterion is con-
6
requirements for Commercial Natural UF . cernedwithboththevolatilecomponentsandthosethatremain
6
on the inner surfaces and in the heel, so
...