API Plant Inspection – 653
API 653 is the standard for tanks over 50 feet tall or having a diameter greater than 30 feet. Covers the maintenance, inspection, alteration, and repair of steel, field-erected aboveground storage tanks (ASTs) built to API 650 or API 12C standards. API 653 Plant Inspection must be performed by a licensed inspector.
Pressure Vessel Inspection-API 510
“In/Out-service Inspection, Rating, Repair, and Alteration,” details requirements for maintaining the integrity of pressure vessels.
API 510 inspections must be performed by a licensed inspector.
Piping Inspection-API 570
In-service Inspection, Rating, Repair, and Alternation of Piping Systems,” provides similar requirements applicable to metallic and fiberglass reinforced plastic (FRP) piping.