1.1 本规程规定了对无孔金属和非金属部件进行液体渗透检测的最低要求。 注1: 本规程取代MIL-STD-6866。 1.2 本规程中描述的渗透检测工艺适用于过程中、最终和维护（在用）检测。这些过程适用于检测未熔合、腐蚀、裂纹、搭接、冷隔和孔隙等不连续性，这些不连续性是开放的或与受检部件表面相连的。 1.3 使用由热塑性材料制成的部件时，必须小心高温。此外，一些清洁剂、渗透剂和显影剂可能对塑料等非金属材料产生有害影响。检查前，应进行测试，以确保清洁或检查材料不会对待检查部件有害。 1.4 单位- 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值不一定是精确的等价物；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 1.5 本实践的所有领域均可由认可的工程组织和供应商达成协议，或由认可的工程组织提供具体指导。 注2: 在本文件中，术语 黑光 已改为 UV-A 符合最新的术语 E1316 . 黑光 可以指大范围的紫外线辐射；荧光渗透检测仅使用UV-A范围。 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。 ====意义和用途====== 4.1 本规程确定了控制液体渗透法应用的基本参数。本规程的编写是为了在工程图纸、规范或合同中规定。它不是检查员使用的详细操作程序，因此必须由符合本规程要求的详细程序进行补充。实践 E165/E165M 包含帮助开发详细需求的信息。

1.1 This practice establishes the minimum requirements for conducting liquid penetrant examination of nonporous metal and nonmetal components. Note 1: This practice replaces MIL-STD-6866. 1.2 The penetrant examination processes described in this practice are applicable to in-process, final, and maintenance (in-service) examinations. These processes are applicable for the detection of discontinuities, such as lack of fusion, corrosion, cracks, laps, cold shuts, and porosity, that are open or connected to the surface of the component under examination. 1.3 Caution must be exercised in the usage of elevated temperature with components manufactured from thermoplastic materials. Also, some cleaners, penetrants, and developers can have a deleterious effect on nonmetallic materials such as plastics. Prior to examination, tests should be conducted to ensure that none of the cleaning or examination materials are harmful to the components to be examined. 1.4 Units— The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.5 All areas of this practice may be open to agreement between the cognizant engineering organization and the supplier, or specific direction from the cognizant engineering organization. Note 2: Throughout this document, the term blacklight has been changed to UV-A to conform with the latest terminology in Terminology E1316 . Blacklight can mean a broad range of ultraviolet radiation; fluorescent penetrant examination only uses the UV-A range. 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. ====== Significance And Use ====== 4.1 This practice establishes the basic parameters for controlling the application of the liquid penetrant method. This practice is written so it can be specified on the engineering drawing, specification, or contract. It is not a detailed how-to procedure to be used by the inspector and, therefore, must be supplemented by a detailed procedure that conforms to the requirements of this practice. Practice E165/E165M contains information to help develop detailed requirements.