ASTM C788-98

Standard Specification for Nuclear-Grade Uranyl Nitrate Solution

SCOPE
1.1 This specification applies to nuclear-grade uranyl nitrate solution not exceeding 5%  235 U intended for subsequent manufacture into either UF6 (for feed to an enrichment plant) or direct conversion to uranium oxide (for use in reactors).
1.2 This specification is intended to provide the nuclear industry with a general standard for uranyl nitrate solution. It recognizes the diversity of manufacturing methods and the processes to which it is subsequently to be subjected. It is therefore anticipated that it may be necessary to include supplementary specification limits by agreement between purchaser and manufacturer. Different limits are appropriate depending on whether or not the uranyl nitrate is to be converted to UF6 for subsequent processing.
1.3 The purpose of this specification is: (a) to define the impurity and uranium isotope limits for commercial standard uranyl nitrate, and (b) to define additional limits for reprocessed uranyl nitrate (or any mixture of reprocessed and commercial standard uranyl nitrate). For such uranyl nitrates, special provisions may need to be made to ensure that no extra hazard arises to the employees, the process equipment, or the environment.
1.4 The scope of this specification does not comprehensively cover all provisions for preventing criticality accidents, for health and safety, or for shipping. Observance of this standard does not relieve the user of the obligation to conform to all international, federal, state and local regulations for processing, shipping, or any other way of using the uranyl nitrate. An example of a U.S. Government Document is the Code of Federal Regulations (latest edition), Title 10, Part 50.  
1.5 This standard does not purport to address all of the safety problems, 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-Jul-1998
• 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 C788-03 - Standard Specification for Nuclear-Grade Uranyl Nitrate Solution or Crystals
• Effective Date: 10-Jul-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.
Designation: C 788 – 98
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 Specification for
1
Nuclear-Grade Uranyl Nitrate Solution
This standard is issued under the fixed designation C 788; 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 C 787 Specification for Uranium Hexafluoride for Enrich-
3
ment
1.1 This specification applies to nuclear-grade uranyl nitrate
235
C 799 Test Methods for Chemical, Mass Spectrometric,
solution not exceeding 5 % U intended for subsequent
Spectrochemical, Nuclear, and Radiochemical Analysis of
manufacture into either UF (for feed to an enrichment plant)
6
3
Nuclear-Grade Uranyl Nitrate Solutions
or direct conversion to uranium oxide (for use in reactors).
3
C 859 Terminology Relating to Nuclear Materials
1.2 This specification is intended to provide the nuclear
C 996 Specification for Uranium Hexafluoride Enriched to
industry with a general standard for uranyl nitrate solution. It
235
3
Less Than 5 % U
recognizes the diversity of manufacturing methods and the
C 1233 Practice for Determining Equivalent Boron Con-
processes to which it is subsequently to be subjected. It is
3
tents of Nuclear Materials
therefore anticipated that it may be necessary to include
C 1295 Test Method for Gamma Energy Emission from
supplementary specification limits by agreement between pur-
Fission Products in Uranium Hexafluoride and Uranyl
chaser and manufacturer. Different limits are appropriate de-
3
Nitrate Solution
pending on whether or not the uranyl nitrate is to be converted
4
2.2 ANSI Standard:
to UF for subsequent processing.
6
ANSI/ASME NQA-1 Quality Assurance Program, Require-
1.3 The purpose of this specification is: (a) to define the
ments for Nuclear Facilities
impurity and uranium isotope limits for commercial standard
2.3 U.S. Government Document:
uranyl nitrate, and (b) to define additional limits for repro-
Code of Federal Regulations, Title 10, (Energy), Part 50,
cessed uranyl nitrate (or any mixture of reprocessed and
Domestic Licensing of Production and Utilization Facili-
commercial standard uranyl nitrate). For such uranyl nitrates,
ties
special provisions may need to be made to ensure that no extra
5
2.4 Other Document:
hazard arises to the employees, the process equipment, or the
Davies, B. S. J. and Tobias, A., A Summary of the Data
environment.
Available in ENDF 1B Format, CEGB Report RD/B/5095
1.4 The scope of this specification does not comprehen-
N81 (November 1981)
sively cover all provisions for preventing criticality accidents,
for health and safety, or for shipping. Observance of this
3. Terminology
standard does not relieve the user of the obligation to conform
3.1 Definitions of Terms Specific to This Standard:
to all international, federal, state and local regulations for
3.1.1 Terms shall be defined in accordance with Terminol-
processing, shipping, or any other way of using the uranyl
ogy C 859, except for the following:
nitrate. An example of a U.S. Government Document is the
2 3.1.1.1 commercial standard uranyl nitrate—refers to ura-
Code of Federal Regulations (latest edition), Title 10, Part 50.
nyl nitrate made from unirradiated uranium. However, it is
1.5 This standard does not purport to address all of the
recognized that some contamination with reprocessed uranium
safety concerns, if any, associated with its use. It is the
may occur during routine processing; this is acceptable, pro-
responsibility of the user of this standard to establish appro-
vided that the product meets the specification for commercial
priate safety and health practices and determine the applica-
standard uranyl nitrate as defined in 4.2.
bility of regulatory limitations prior to use.
3.1.1.2 reprocessed uranyl nitrate—refers to any uranyl
2. Referenced Documents nitrate made from uranium that has been exposed in a neutron
irradiation facility and subsequently chemically separated from
2.1 ASTM Standards:
the fission products and transuranic isotopes so generated. The
limits given in this specification are intended to be typical of
1
This specification is under the jurisdiction of ASTM Committee C-26 on
Nuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.02 on Fuel
3
and Fertile Material Specifications. Annual Book of ASTM Standards, Vol 12.01.
4
Current edition approved July 10, 1998. Published November 1998. Originally Available from the American National Standards Institute, 11 W. 42nd St., 13th
published as C 788 – 76. Last previous edition C 7
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