1.1 本规范适用于不超过5%的核级硝酸铀酰水溶液或晶体 % 235 U用于后续制造到任一UF中 6. （用于浓缩工厂的进料）或直接转化为氧化铀（用于反应堆）。 1.2 本规范旨在为核工业提供硝酸铀酰水溶液或晶体的通用标准。它认识到制造方法的多样性以及随后将要经历的过程。因此，预计有必要通过买方和制造商之间的协议纳入补充规范限制。 根据硝酸铀酰是否转化为超滤，不同的限值是合适的 6. 用于后续处理。 1.3 本规范的目的是:（a）定义商业标准硝酸铀酰的杂质和铀同位素限值，以及（b）定义再加工硝酸铀酰（或再加工硝酸铀酰和商业标准硝酸铀酰的任何混合物）的附加限值。对于此类铀酰硝酸盐，可能需要制定特殊规定，以确保不会对员工、工艺设备或环境产生额外危害。 1.4 本规范的范围并不全面涵盖预防危急事故、健康和安全或装运的所有规定。 遵守本标准并不免除用户遵守所有国际、联邦、州和地方有关加工、运输或任何其他方式使用硝酸铀酰的规定的义务。美国政府文件的一个例子是《联邦法规》第10篇第50部分（最新版）。 1.5 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.6 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification applies to nuclear-grade aqueous uranyl nitrate solution or crystals not exceeding 5 % 235 U intended for subsequent manufacture into either UF 6 (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 UF 6 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, Title 10, Part 50 (latest edition). 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 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.