ASTM C788-03

Standard Specification for Nuclear-Grade Uranyl Nitrate Solution or Crystals

ABSTRACT
This specification applies to nuclear-grade aqueous uranyl nitrate solution or crystals not exceeding 5% 235U intended for subsequent manufacture into either UF6 or direct conversion to uranium oxide. This specification is intended to provide the nuclear industry with a general standard for aqueous uranyl nitrate solution or crystals. The purpose of this specification is: to define the impurity and uranium isotope limits for commercial standard uranyl nitrate, and to define additional limits for reprocessed uranyl nitrate (or any mixture of reprocessed and commercial standard uranyl nitrate).
SCOPE
1.1 This specification applies to nuclear-grade aqueous uranyl nitrate solution or crystals not exceeding 5 %  235U 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 aqueous uranyl nitrate solution or crystals. 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 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-Jul-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 C788-98 - Standard Specification for Nuclear-Grade Uranyl Nitrate Solution
• Effective Date: 10-Jul-2003
• Replaced By: ASTM C788-03(2009) - Standard Specification for Nuclear-Grade Uranyl Nitrate Solution or Crystals
• Effective Date: 01-Jun-2009
• Referred By: ASTM C1517-16 - Standard Test Method for Determination of Metallic Impurities in Uranium Metal or Compounds by DC-Arc Emission Spectroscopy
• Effective Date: 10-Jul-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-Jul-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-Jul-2003
• Referred By: ASTM C1334-05(2022) - Standard Specification for Uranium Oxides with a ²³⁵U Content of Less Than 5 % for Dissolution Prior to Conversion to Nuclear-Grade Uranium Dioxide
• Effective Date: 10-Jul-2003
• Referred By: ASTM C1508-18 - Standard Test Method for Determination of Bromine and Chlorine in UF<inf>6</inf> and Uranyl Nitrate by X-Ray Fluorescence (XRF) Spectroscopy
• Effective Date: 10-Jul-2003
• Referred By: ASTM C1287-18 - Standard Test Method for Determination of Impurities in Nuclear Grade Uranium Compounds by Inductively Coupled Plasma Mass Spectrometry
• Effective Date: 10-Jul-2003
• Referred By: ASTM C799-19 - Standard Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Nuclear-Grade Uranyl Nitrate Solutions
• Effective Date: 10-Jul-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-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 – 03
Standard Specification for
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Nuclear-Grade Uranyl Nitrate Solution or Crystals
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 2. Referenced Documents
1.1 This specification applies to nuclear-grade aqueous 2.1 ASTM Standards:
235
uranyl nitrate solution or crystals not exceeding 5 % U C 787 Specification for Uranium Hexafluoride for Enrich-
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intended for subsequent manufacture into either UF (for feed ment
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to an enrichment plant) or direct conversion to uranium oxide C 799 Test Methods for Chemical, Mass Spectrometric,
(for use in reactors). Spectrochemical, Nuclear, and Radiochemical Analysis of
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1.2 This specification is intended to provide the nuclear Nuclear-Grade Uranyl Nitrate Solutions
3
industry with a general standard for aqueous uranyl nitrate C 859 Terminology Relating to Nuclear Materials
solution or crystals. It recognizes the diversity of manufactur- C 996 Specification for Uranium Hexafluoride Enriched to
235
3
ing methods and the processes to which it is subsequently to be Less Than 5 % U
subjected. It is therefore anticipated that it may be necessary to C 1233 Practice for Determining Equivalent Boron Con-
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include supplementary specification limits by agreement be- tents of Nuclear Materials
tween purchaser and manufacturer. Different limits are appro- C 1295 Test Method for Gamma Energy Emission from
priate depending on whether or not the uranyl nitrate is to be Fission Products in Uranium Hexafluoride and Uranyl
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converted to UF for subsequent processing. Nitrate Solution
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1.3 The purpose of this specification is: (a) to define the 2.2 ANSI Standard:
impurity and uranium isotope limits for commercial standard ANSI/ASME NQA-1 Quality Assurance, Requirements for
uranyl nitrate, and (b) to define additional limits for repro- Nuclear Facility Applications
cessed uranyl nitrate (or any mixture of reprocessed and 2.3 U.S. Government Document:
commercial standard uranyl nitrate). For such uranyl nitrates, Code of Federal Regulations, Title 10, (Energy), Part 50,
special provisions may need to be made to ensure that no extra Domestic Licensing of Production and Utilization Facili-
hazard arises to the employees, the process equipment, or the ties
environment.
3. Terminology
1.4 The scope of this specification does not comprehen-
sively cover all provisions for preventing criticality accidents, 3.1 Definitions of Terms Specific to This Standard:
3.1.1 Terms shall be defined in accordance with Terminol-
for health and safety, or for shipping. Observance of this
standard does not relieve the user of the obligation to conform ogy C 859, except for the following:
3.1.1.1 commercial standard uranyl nitrate—refers to ura-
to all international, federal, state and local regulations for
processing, shipping, or any other way of using the uranyl nyl nitrate made from unirradiated uranium. However, it is
recognized that some contamination with reprocessed uranium
nitrate. An example of a U.S. Government Document is the
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Code of Federal Regulations (latest edition), Title 10, Part 50. may occur during routine processing; this is acceptable, pro-
vided that the product meets the specification for commercial
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the standard uranyl nitrate as defined in 4.2.
3.1.1.2 reprocessed uranyl nitrate—refers to any uranyl
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- nitrate made from uranium that has been exposed in a neutron
irradiationfacilityandsubsequentlychemicallyseparatedfrom
bility of regulatory limitations prior to use.
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 C26 on
reprocessed spent fuel having achieved burn-up levels of up to
Nuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.02 on Fuel
and Fertile Material Specifications.
Current edition approved July 10, 2003. Published August 2003. Originally
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published as C 788 – 76. Last previous edition C 788 – 98. Annual Book of ASTM Standards, Vol 12.01.
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