NACE SP21459-2020/IEEE Std 2655:2018 PDF Download

The NACE SP21459-2020/IEEE Std 2655:2018 standard is focused on providing guidance for the inspection and assessment of corrosion on above-grade sections of electrical transmission, distribution, and substation steel structures. It is intended for use by electric utility personnel, contractors, inspectors, and anyone interested in understanding the impact of corrosion on these structures.

The standard lays out requirements to help utilities identify structures that may be at a high risk for corrosion and provides guidelines for inspecting these selected structures. It also provides a system for categorizing the condition of structures based on the level of corrosion degradation observed. This categorization allows for prioritizing structures that require additional inspection based on their condition.

The standard is specifically focused on steel transmission towers, poles, distribution poles, and substation structures, including those that are galvanized or painted mild steel. It is applicable to similar structures as well.