The American Petroleum Institute initiated an Above Ground Storage Tank Inspector Certification Program with the issuance of Supplement 1 to API 653, Tank Inspection, Repair, Alteration, and Reconstruction. The program was developed with the participation storage tank owner/users, and establishes a uniform national program that will assist state and local governments in above ground storage tank regulations.

API 653 certification is valid for a three-year term. 


Engineers, Inspectors Designers & operating persons in the oil, gas and petrochemical industry. Those seeking better understanding of use of codes and standards in storage tank  industries, knowledge of design criteria, repairs alteration and understanding al in-service inspection & test requirements.


  • API Publications:
    • API Recommended Practice 571, Damage Mechanisms Affecting Fixed Equipment in the Refining· Industry,
    • API Recommended Practice 575, Inspection of Atmospheric and Low-Pressure Storage Tanks,
    • API Recommended Practice 577 – Welding Inspection and Metallurgy,
    • API Standard 650, Welded Tanks for Oil Storage,
    • API Recommended Practice 651, Cathodic Protection of Aboveground Petroleum Storage Tanks,
    • API Standard 653, Tank Inspection, Repair, Alteration, and Reconstruction,
    • American Society of Mechanical Engineers (ASME), Boiler and Pressure Vessel Code,
    • ASME Section V, Nondestructive Examination, Articles 1, 2, 6, 7 and 23
    • Section IX, Welding and Brazing Qualifications (Welding Only)


This course has been designed to train individuals who are interested in obtaining the API 653  Piping Inspector Certification, as well as those who are seeking  broad knowledge base relating to tank inspection and repair of aboveground storage tanks, understanding of API 650 & 652 design  and IX & other code requirements.  The course material contains specially designed INDTT course booklet & sets of Open & closed book  questions & classroom exercises.


  • Corrosion rates and Inspection Intervals &  Remaining Life determination,
  • Calculating minimum thickness or maximum fill height,
  • Weld Sizes for Shell & Roof openings
  • Understanding Hot Tapping requirements
  • Calculating minimum spacing between existing nozzle and a new Hot Tap nozzle.
  • Settlement evaluation, Edge Settlement, Bottom Settlement determination.
  • Impact testing, toughness, Tank Design Metal Temperature related calculations
  • Existing Tank shell – Minimum thickness determination & thickness required for continued service evaluation
  • Reconstructed tank shell – minimum thickness , Tank shell – pitting evaluation
  • Bottom plate minimum thickness calculation of “mrt1” & “mrt2”, minimum remaining thickness at the next inspection.
  • Determination of minimum dimensions for a replacement plate &  Lap welded patch plates.


As in the publication effectivity sheet the effective editions of the publications are not required to be carried but will be made available in PDF format during Certification Examination.