1.1 本试验方法用于测定氧化钚（PuO）中的碳和硫含量 2. )粉末。该方法利用氧气净化的感应炉燃烧样品。燃烧产生的二氧化碳和二氧化硫被扫入吸收池，并通过红外吸收分光光度计进行定量。本试验方法是试验方法中给出的碳和硫方法的替代方法 C697 . 1.2 核级烧结混合氧化物（MOX）燃料芯块中碳和硫含量的测定需要使用较大的样品，并在试验方法中进行了说明 C1853 . 1.3 以国际单位制表示的数值应视为标准值。括号中的测量单位仅供参考。 1.4 本标准可能涉及危险材料、操作和设备。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。 1.5 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。 ====意义和用途====== 5.1 氧化钚粉末是MOX燃料的一种成分。本试验方法可用于确定PuO的碳和硫含量 2. 粉末符合规范要求 C757 和 C753 或核燃料供应商与客户之间协议规定的其他要求。 5.2 MOX用作核反应堆燃料。要用作燃料，MOX材料必须符合其中杂质元素含量的规范。 规范中给出了这些要求的示例 C833 . 5.3 该方法适用于纯氧化钚粉末。

1.1 This test method is for the determination of the carbon and sulfur contents in plutonium oxide (PuO 2 ) powder. The method utilizes an induction furnace purged with oxygen for combustion of the sample. Carbon dioxide and sulfur dioxide produced by the combustion are swept into absorption cells and quantified by infrared absorption spectrophotometers. This test method is an alternative to the methods for carbon and sulfur given in Test Method C697 . 1.2 Determination of the carbon and sulfur contents in nuclear-grade sintered mixed oxide (MOX) fuel pellets requires the use of larger samples and is addressed in Test Method C1853 . 1.3 The values stated in SI units are to be regarded as standard. Units of measurement in parentheses are included for information only. 1.4 This standard may involve hazardous materials, operations, and equipment. 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. 1.5 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. ====== Significance And Use ====== 5.1 Plutonium oxide powder is a component of MOX fuel. This test method can be used to determine whether the carbon and sulfur contents of the PuO 2 powder meets the requirements of Specifications C757 and C753 or other requirements as defined by agreement between the nuclear and fuel supplier and the customer. 5.2 MOX is used as a nuclear-reactor fuel. To be used as a fuel, MOX materials must meet specifications on the impurity element contents in them. Examples of these requirements are given in Specification C833 . 5.3 This method is suitable for pure plutonium oxide powder.