Certified API 570 Piping inspectors must have a broad knowledge base relating to maintenance, inspection, alteration and repair of in-service metallic piping systems. The API 570 examination is designed to determine if applicants have such knowledge. This certification program benefits employers and the industry as a whole by helping to: Provide a continued high level of safety through the use of inspectors specialized in process piping Improve management control of process unit inspection, repair, alteration and rerating Reduce the potential for inspection delays resulting from regulatory requirements