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API 620/650/651: Design, Fabrication, Erection, and Inspection of Welded and Large Low-Pressure Welded Storage Tanks and Their Cathodic Protection

An Intensive 5-Day Online Training Course

API 620/650/651: Design, Fabrication, Erection, and Inspection of Welded and Large Low-Pressure Welded Storage Tanks and Their Cathodic Protection

Dealing with tanks according to the American standards API

Scheduled Dates

17 - 21 Jun 2024 Online $3,950
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Why Choose this Training Course?

A majority of above-ground storage tanks (especially those used for storage of hydrocarbon liquids) are constructed according to API (American Petroleum Institute) standards.

API 650 & API 620 stipulates an array of requirements to be taken care of during design and construction and accommodates further requirements from clients as well (especially those in the oil and gas industry).

Studying API 650 standard will give you high knowledge about the minimum requirements for material, design, fabrication, erection, and inspection for vertical, cylindrical, above ground, closed- and open-top, welded storage tanks in various sizes and capacities for internal pressures approximating atmospheric pressure.

API 620 standard states the Design and Construction of Large, Welded, Low-Pressure Storage Tanks.

The purpose of the recommended practice (RP) API RP 651 is to present procedures and practices for achieving effective corrosion control on above-ground storage tank bottoms through the use of cathodic protection. This RP contains provisions for the application of cathodic protection to existing and new above-ground storage tanks.

What are the Goals?

By the end of this API 620/650/651: online training course, participants will:

  • Use the standard to qualify the welding procedures and the welders as well.
  • have knowledge about the limitation in materials of construction and welding joints.
  • Define the different components of tanks.
  • obtain knowledge about the examination methods NDT of tanks and acceptance criteria.
  • Have the knowledge to review the hydrotest procedure.
  • Know the code requirements and appropriately select materials for tank design
  • Calculate Minimum required thickness using equations
  • Understand the client data sheet requirements for AST tanks.
  • Know about the NDT coverage of different welds.
  • Understand Methods of Cathodic Protection for Corrosion Control

Who is this Training Course for?

This PetroKnowledge online training course is suitable to a wide range of professionals but will greatly benefit:

  •  Storage Tanks Design Engineers
  • Inspection Engineers
  • Welding Engineers and Inspectors
  • Fabrication Supervisors
  • NDT Engineers and Technicians

How will this Training Course be Presented?

This PetroKnowledge online training course will utilize a variety of proven online learning techniques to ensure maximum understanding, comprehension, retention of the information presented. The training course is conducted online via an Advanced Virtual Learning Platform in the comfort of your choice location

Organisational Impact

Enable your company to have qualified persons that can deal with the mandatory requirements of the international API codes. Moreover, the company will benefit from trained personnel with enhance ability in tank design, construction, examination and testing.

Personal Impact

Gain extensive knowledge on storage tanks design, fabrication, examination and testing. Moreover, the delegate will understand how to use the API standards during the design, fabrication and erection phases.

Daily Agenda

Day One: Welded Tanks for Oil Storage (API 650)

  • Introduction to Storage tank components.
  • Scope
  • Materials
  • Toughness requirements
  • Design

Day Two: Welded Tanks for Oil Storage (API 650)

  • Fabrication
  • Erection
  • Methods of Examining Joints
  • Welding Procedure and Welder Qualifications
  • Marking

Day Three: Design and Construction of Large, Welded, Low-Pressure Storage Tanks (API 620)

  • Scope
  • Definitions
  • Materials
  • Design

Day Four: Design and Construction of Large, Welded, Low-Pressure Storage Tanks (API 620)

  • Fabrication
  • Inspection and Testing
  • Standard Hydrostatic and Pneumatic Tests
  • Marking
  • Pressure – and Vacuum – Relieving Devices

 Day Five: Cathodic Protection of Aboveground Petroleum Storage Tanks (API 651) 

  • Corrosion of Aboveground Steel Storage Tanks
  • Determination of Need for Cathodic Protection
  • Methods of Cathodic Protection for Corrosion Control
  • Criteria for Cathodic Protection
  • Installation of Cathodic Protection Systems
  • Interference Currents


  • On successful completion of this online training course, a PetroKnowledge E-Certificate will be awarded to the delegates

Frequently Asked Questions

How can I register for a training course?

  • To register online through our website, please click “Enroll Now” on the course page, complete and submit the form. A confirmation e-mail and instructions will be sent to the participant’s e-mail.
  • You may also get in touch with our Registration Team on
    +971 50 981 7386 | +971 2 557 7389 or send an email to

When and how do I arrange payments?

  • Payments can be made in USD or UAE local currency AED (Arab Emirates Dirhams) either by Bank Transfer or by Credit Card. Our Bank Account details will be provided on the invoice.
  • Course fees are payable upon booking unless a valid, authorized Purchase Order is provided and accepted.
  • Invoices will be sent via email/courier to the ID/name and address provided.
  • The course fee shall be settled prior to course start date. Corporate payments with existing payment policy shall be relayed to us in advance.

When should I expect to receive confirmation of registration?

Upon successful registration online, enrolment on the respective training course will be confirmed by Registration Team by e-mail along with the invoice and joining instruction.

Is there a discount for more than one registrant/course?

For corporate fees and group registration, please send your query to

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All rights reserved. Any unauthorized copying, distribution, use, dissemination, downloading, storing (in any medium), transmission, reproduction or reliance in whole or any part of this course outline is prohibited and will constitute an infringement of copyright.

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