American Petroleum Institute / API / Institut américain du pétrole

American Petroleum Institute : les indispensables

API STD 650-2012 Welded Tanks for Oil Storage API STD 653-2009 Tank Inspection, Repair, Alteration, and ReconstructionAPI is a leader in the development of petroleum and petrochemical equipment and operating standards covering topics that range from drill bits to environmental protection. These embrace proven, sound engineering and operating practices and safe, interchangeable equipment and materials. Many have been incorporated into state and federal regulations and adopted by ISO for worldwide acceptance.



  1. API Std 650
    Welded Steel Tanks for Oil Storage
  2. API Std 1104
    Welding of Pipelines and Related Facilities  
  3. API Std 653
    Tank Inspection, Repair, Alteration, and Reconstruction
  4. ANSI/API 570
    Piping Inspection Code: Inspection, Repair, Alteration, and Rerating of In-Service Piping Systems (includes addendas) 
  5. API RP 500 (R2002)
    Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Division I and Division 2 
  6. API Std 2000
    Venting Atmospheric and Low-Pressure Storage Tanks: Nonrefrigerated and Refrigerated
  7. ANSI/API Spec 5L
    Specification for Line Pipe
  8. API Std 620
    Design and Construction of Large, Welded, Low-Pressure Storage Tanks