1.1 本指南描述了详细评估钢结构老化涂层状况和涂层表面锈蚀程度的一般程序。可能需要进行额外评估，以支持涂层失效分析或其他工作特定需求。 1.2 本指南不涉及确定钢基体的结构条件。它提供了确定表面锈蚀百分比的程序，但没有确定此类锈蚀的严重程度、状况或原因。 注1: 更全面的状况评估程序、实践 F1130 ，已开发用于确定船舶上涂层的状况。 1.3 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。 1.4 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 对老化涂层表面状况的评估加强了何时需要涂层维护的决策，有助于选择有效的涂层维护程序，并提供了表征涂层系统性能的方法。 SSPC技术更新第3期讨论了选择涂层作为维护策略的相关风险，尤其是在没有进行目视评估和评估第节中所述现有涂层系统物理性能的情况下 5. .

1.1 This guide describes general procedures for conducting a detailed assessment of the condition of aged coatings on steel structures and the extent of rust breakthrough of the coated surface. Additional assessment may be required to support coating failure analyses or other job-specific needs. 1.2 This guide does not address determining the structural condition of a steel substrate. It provides procedures to determine the percent of the surface rusted, but not the severity, condition, or cause of such rusting. Note 1: A more comprehensive condition assessment procedure, Practice F1130 , has been developed for determining the condition of coatings on a ship. 1.3 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. 1.4 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 Assessment of the condition of aged coated surfaces strengthens decisions on when coating maintenance is required, aids in the selection of effective coating maintenance procedures, and provides a means to characterize performance of coating systems. SSPC Technology Update No. 3 discusses the risks associated with selecting overcoating as a maintenance strategy, particularly without performing visual assessments and evaluating the physical properties of the existing coating system(s) described in Section 5 .