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API 650 & 653 Storage Tank Design, Maintenance & Evaluation

This three (3) day / four (4) day optional, course will provide an intensive and combined review of the API 650 Welded Steel Tanks for Oil Storage and API 653 Tank Inspection, Repair, Alteration, and Reconstruction Standard.

As separate courses, each standard is a three-day course; as a combined course, the focus is to concentrate on the critical aspects of tank construction and maintenance and application, via case study, to owner's equipment. The case study segment has resulted in clients identifying solution opportunities in both scheduling of shutdowns and repair / replacement cost savings well in excess of $ 1M to $20M per study.

Course Highlights

API 650 covers material, design, fabrication, erection, and testing requirements for aboveground, vertical, cylindrical, closed- and open-top, welded steel atmospheric storage tanks (AST) in various sizes and capacities. API 650 applies to tanks with internal pressures approximating atmospheric pressure, but higher pressure is permitted when addtional requirements are met. Some key annexes are reviewed.

API 653 provides a standard for in-service and out-of-service inspection, repair, alteration, evaluation and reconstruction of tankage. The standard provides guidance and opportunity to apply advanced techniques for assessing brittle fracture with the presence of crack-like flaws, evaluation of shell distortions, general and local metal loss, bottoms and edge settlements and more.

Detailed Course Description


Day 1     Part I - API-650

Storage Tank Types & Features
     - Tank Type & Functions
     - Primary Components
     - Appurtenances
     - Design Specifications

Material Selection
     - Material Property Considerations
     - Acceptable Material Specifications

Mechanical Design Requirements
     - Mechanical Design parameters
     - Shell Thickness Determination
     - Wind Girder Requirements
     - Nozzle Design Details
     - Roof Requirements
     - Bottom Requirements

Fabrication Details
     - Types of Welded Joints
     - Welding Methodology
     - Weld Detail Requirements

Day 2    

Inspection & Testing Requirements
     - Types of Weld Defects
     - Inspection Methods
     - Inspection Requirements
     - Dimensional Tolerances
     - Testing

Vents And Fire Protection Systems
     - Vents for Fixed-Roof Tanks
     - Vents for Floating Roof tanks
     - Fire Protection Systems

Part II - API-653

     - Scope of API-653
     - Definitions
     - References

Suitability for Service
     - Foundation
     - Shell, Bottom, Roof
     - Settlement Impacts
     - Analysis Techniques & Alternatives

Day 3    

Tank Inspection
     - Objectives
     - In-service Inspection
     - & Out-of-service
     - Inspection Checklists
Tank Repair & Alteration
     - General Considerations
     - Material Considerations
     - Repair, Replace & Alteration of
       · Shell Plate Material
       · Shell Penetrations
       · Repair of Tank Bottom
       · Tank Roof

Dismantling And Reconstruction
     - Dismantling Methods
     - Reconstruction
     - Dimensional Tolerances

Examination And Testing
     - NDE Methods
     - Welding Inspection
     - Hydrostatic Testing
     - Pneumatic Testing

Day 4 (Optional)

API 650 / 653 Exam & Exam Takeup
     - Optional

Fitness for Service
     - FFS Primer for Tank Application

Case Study, (client supplied)
     - client provides problem
        to be worked by class
Case Studies (alternate)
     - various case study examples
       · nozzle mods
       · tank floor replacement
       · floor / edge settlement
       · shell distortions
       · shell ring buckling
       · remaining cyclic life
       · high temperature re-rate
       · brittle fracture /cracking

Atmospheric Storage Tank Calculator

The examination takes approximately four hours to complete.  There are 75 multiple-choice questions for this examination.  For more information on examination content please see the Body of Knowledge. You may not bring any reference materials, codebooks, or any other printed or written material to the examination.   Check the API wwebsite for the latest updated information.

API certification programs are computer based; contact API or visit their website for more exam information

For more information from API , please refer to:

Course content and registration information for classes can be obtained from John Aumuller  P. Eng., Ph. D., as needed.