This standard provides requirements to:(1) help utilities identify structures that may be high risk for above-grade corrosion; (2) inspect the selected structures; (3) categorize the condition of structures based on corrosion degradation; (4) prioritize structures requiring additional inspection based on those findings; and (5) help identify next steps as required.

The purpose of this standard is to provide procedures for the use of common inspection practices and technology on structures above grade. The standard includes: (a) assessment of historical data to categorize inspection priority; (b) above-grade inspection and assessment to categorize structures by level of condition; (c) site-specific environmental factors and atmospheric conditions; (d) evaluation of existing modifications and repairs.