1.1 本规范涵盖了四种等级的燃料油，全部或部分由烃基使用或再加工的润滑油或功能流体（如防腐剂和液压油）制成。这四种等级的燃料适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。这些燃料不适用于家用加热器、小型商用锅炉、内燃机或船舶应用。 1.1. 1. RFO4、RFO5L、RFO5H和RFO6级是使用的润滑油混合物，有或没有馏分油或残余燃料油，或两者兼而有之，粘度增加，用于配备处理这些类型回收燃料的工业燃烧器。 注1: 有关本规范中使用的术语和测试方法的重要性的信息，请参阅 附录X1 . 1.2 本规范用于购买从废润滑油中提取的燃料油的合同，并用于指导此类燃料的消费者。 本规范没有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可能更具限制性的国家或地方法规。在某些司法管辖区，废油被视为危险废物，废油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生产商、运输商和转运设施、再加工商、营销商和燃烧器的要求，请参见40 CFR 279。 注3: 静电的产生和消散会给馏分燃烧器燃料油的处理带来问题。有关此主题的更多信息，请参阅指南 D4865 . 1.4 以国际单位制表示的值应被视为标准值；非国际单位制单位（如有）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》中确立的国际公认的标准化原则制定的。

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.