Standard Specification for Uranium Oxides with a 235U Content of Less Than 5 % for Dissolution Prior to Conversion to Nuclear-Grade Uranium Dioxide
Standard Specification for Uranium Oxides with a 235U Content of Less Than 5 % for Dissolution Prior to Conversion to Nuclear-Grade Uranium Dioxide
SCOPE 1.1 This specification covers uranium oxides, including processed byproducts or scrap material (powder, pellets, or pieces), that are intended for dissolution into uranyl nitrate solution meeting the requirements of Specification C788 prior to conversion into nuclear grade UO2 powder with a 235U content of less than 5 %. This specification defines the impurity and uranium isotope limits for such urania powders that are to be dissolved prior to processing to nuclear grade UO2 as defined in Specification C753. 1.2 This specification provides the nuclear industry with a general standard for such uranium oxide powders. It recognizes the diversity of conversion processes and the processes to which such powders are subsequently to be subjected (for instance, by solvent extraction). It is therefore anticipated that it may be necessary to include supplementary specification limits by agreement between the buyer and seller. 1.3 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 specification does not relieve the user of the obligation to conform to all international, national, state and local regulations for processing, shipping, or any other way of using urania powders (see 2.2 and 2.3). 1.4 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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 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 is an ASTM International standard designed to guide the nuclear industry in the preparation and handling of uranium oxide materials. This specification applies to uranium oxides, including reprocessed byproducts or scrap material in powder, pellet, or piece form, that are intended for dissolution into uranyl nitrate solutions before conversion to nuclear-grade uranium dioxide (UO₂) with less than 5% 235U content.
This standard sets out requirements for impurity limits, isotopic content, packaging, sampling, and testing, ensuring uniformity and reliability in uranium oxide materials prepared for further nuclear fuel cycle processing. While providing a comprehensive framework, it also recognizes the need for supplementary agreements between buyers and sellers and highlights the importance of adherence to all applicable international, national, and local regulations.
Material Scope and Purity
Isotopic and Impurity Limits
Physical and Chemical Requirements
Lot Definition and Sampling
Testing, Certification, and Quality Assurance
Другие стандарты ASTM
This specification is vital for organizations involved in the nuclear fuel cycle, including uranium conversion facilities, fuel fabricators, and nuclear power utilities. Practical applications include:
By adhering to ASTM C1334-05(2022), nuclear industry stakeholders can ensure uranium oxides are suitable for conversion to nuclear-grade uranium dioxide, supporting safe, efficient, and standardized production of reactor fuel.
Keywords: uranium oxides, uranium dioxide, 235U content, nuclear-grade, dissolution, nuclear fuel, ASTM C1334, impurity limits, uranium conversion, nuclear material specification, quality assurance.