1.1 本规范涵盖核级PuO 2. 粉适用于PuO 2. 各种同位素组成，通常由天然或微浓缩铀的反应堆内中子辐照或与铀混合的回收钚的反应堆内中子辐照制备。 1.2 没有讨论或规定预防危急事件，也没有讨论健康和安全要求、避免危险或运输预防措施和控制。遵守本规范并不免除用户了解并遵守与拥有、运输、加工或使用源核材料或特殊核材料有关的所有适用国际、国家或联邦、州和地方法规的义务。 例如，美国政府的相关文件包括《联邦法规》、第10篇《核安全指南》、美国原子能委员会报告TID-7016 2. 和“核安全手册”，H.K.Clark，美国原子能委员会报告，DP-532 2. . 1.3 PuO 2. 应采用合格工艺并按照用户批准的质量保证计划进行生产。 1.4 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。 1.5 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。 1.6 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 covers nuclear grade PuO 2 powder. It applies to PuO 2 of various isotopic compositions as normally prepared by in-reactor neutron irradiation of natural or slightly enriched uranium or by in-reactor neutron irradiation of recycled plutonium mixed with uranium. 1.2 There is no discussion of or provision for preventing criticality incidents, nor are health and safety requirements, the avoidance of hazards, or shipping precautions and controls discussed. Observance of this specification does not relieve the user of the obligation to be aware of and conform to all applicable international, national, or federal, state, and local regulations pertaining to possessing, shipping, processing, or using source or special nuclear material. For examples in the U.S. Government, relevant documents are Code of Federal Regulations, Title 10 Nuclear Safety Guide, U.S. Atomic Energy Commission Report TID-7016 2 , and “Handbook of Nuclear Safety”, H. K. Clark, U.S. Atomic Energy Commission Report, DP-532 2 . 1.3 The PuO 2 shall be produced by a qualified process and in accordance with a quality assurance program approved by the user. 1.4 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 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. 1.6 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.