1.1 本规范涵盖全部或部分使用碳氢化合物基使用或再加工润滑油或功能性流体（如防腐剂和液压流体）制成的四种等级的燃油。这四种等级的燃料用于各种气候和操作条件下的各种类型的燃油燃烧工业设备。这些燃料不用于住宅加热器、小型商用锅炉、内燃机或船舶应用， 1.1.1 等级RFO4、RFO5L、RFO5 H和RFO6是使用的润滑油混合物，含有或不含有粘度增加的馏出物或残余燃料油，或两者兼有，用于配备处理这些类型的循环燃料的工业燃烧器。 注1: 有关本规范中使用的术语和试验方法的重要性的信息，请参见 附录X1 . 1.2 本规范适用于从用过的润滑油中提取的燃油的采购合同，并为此类燃油的消费者提供指导。 本规范未说明任何特定测试必须运行的频率。 1.3 本规范中的任何内容均不得妨碍遵守国家或地方法规，这些法规可能更具限制性。在一些司法管辖区，废油被视为危险废物，废油中的燃料在用作燃料之前必须符合某些标准。 注2: 关于美国联邦对废油发电机、运输和转运设施、再加工厂、销售商和燃烧器的要求，见40 CFR 279。 注3: 静电的产生和消散会在处理馏分燃烧器燃油时产生问题。有关此主题的更多信息，请参阅指南 第4865页 . 1.4 以SI单位表示的值应视为标准值；非国际单位制单位（如给出）仅供参考。 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。

1.1 This specification covers four grades of fuel oil made in whole or in part with hydrocarbon-based used or reprocessed lubricating oil or functional fluids, such as preservative and hydraulic fluids. The four grades of fuel are intended for use in various types of fuel-oil-burning industrial equipment under various climatic and operating conditions. These fuels are not intended for use in residential heaters, small commercial boilers, combustion engines, or marine applications, 1.1.1 Grades RFO4, RFO5L, RFO5H, and RFO6 are used lubricating oil blends, with or without distillate or residual fuel oil, or both, of increasing viscosity and are intended for use in industrial burners equipped to handle these types of recycled fuels. Note 1: For information on the significance of the terminology and test methods used in this specification, see Appendix X1 . 1.2 This specification is for use in contracts for the purchase of fuel oils derived from used lubricating oil and for the guidance of consumers of such fuels. This specification does not address the frequency with which any particular test must be run. 1.3 Nothing in this specification shall preclude observance of national or local regulations, which can be more restrictive. In some jurisdictions, used oil is considered a hazardous waste and fuels from used oil are required to meet certain criteria before use as a fuel. Note 2: For United States federal requirements imposed on used oil generators, transporters and transfer facilities, reprocessors, marketers, and burners, see 40 CFR 279. Note 3: The generation and dissipation of static electricity can create problems in the handling of distillate burner fuel oils. For more information on the subject, see Guide D4865 . 1.4 The values stated in SI units are to be regarded as standard; non-SI units, when given, are for information only. 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.