ASTM C787-20
Standard Specification for Uranium Hexafluoride for Enrichment

Standard No.

ASTM C787-20

Release Date

2020

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM C787-20

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, and (2) to define additional limits for Reprocessed UF6 (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 (for example, see TID-7016, DP-532, ORNLNUREG-CSD-6, and DOE O 474.1). 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered 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.

ASTM C787-20 Referenced Document

• ASTM C1052 Standard Practice for Bulk Sampling of Liquid Uranium Hexafluoride
• ASTM C1295 Standard Test Method for Gamma Energy Emission from Fission Products in Uranium Hexafluoride
• ASTM C1703 Standard Practice for Sampling of Gaseous Uranium Hexafluoride for Enrichment*， 2023-01-01 Update
• ASTM C761 Standard Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Uranium Hexafluoride
• ASTM C859 Standard Terminology Relating to Nuclear Materials
• ASTM C996 Standard Specification for Uranium Hexafluoride Enriched to Less Than 5% 235U1

ASTM C787-20 history

• 2020 ASTM C787-20 Standard Specification for Uranium Hexafluoride for Enrichment
• 2015 ASTM C787-15 Standard Specification for Uranium Hexafluoride for Enrichment
• 2011 ASTM C787-11 Standard Specification for Uranium Hexafluoride for Enrichment
• 2006 ASTM C787-06 Standard Specification for Uranium Hexafluoride for Enrichment
• 2003 ASTM C787-03e2 Standard Specification for Uranium Hexafluoride for Enrichment
• 2003 ASTM C787-03e1 Standard Specification for Uranium Hexafluoride for Enrichment
• 2003 ASTM C787-03 Standard Specification for Uranium Hexafluoride for Enrichment
• 1996 ASTM C787-96 Standard Specification for Uranium Hexafluoride for Enrichment