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API 571 Damage Mechanisms Affecting Fixed Equipment in the Refining Industry

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 Course Overview

API RP 571-2020 (3rd Edition) is the latest edition that describes damage mechanisms affecting equipment in the refining and petrochemical industries. A key first step in managing equipment safety and reliability is the identification and understanding of the various damage mechanisms. Proper identification of damage mechanisms is also required when implementing the API Inspection Codes (API 510, API 570, API 653) and in carrying out risk based inspection (RBI) per API 580 and API 581. When performing a fitness-for-service (FFS) assessment using API 579, the damage mechanisms need to be understood and need to be considered when evaluating the remaining life.


This 5-day corrosion short course aims to provide the participants with a thorough understanding of the various damage mechanisms contained in the latest edition of API RP 571-2020 (released in March 2020) that can affect process equipment, the type and extent of damage that can be expected, and how this knowledge can be applied to the selection of effective inspection methods to detect, size and characterize the damages. The 67 damage mechanisms to be discussed in this API RP 571-2020 (3rd Edition) training course are common to a variety of industries including refining and petrochemical, pulp and paper, and fossil utility:



Damage Mechanism (API RP 571-2020)


Damage Mechanism (API RP 571-2020)




Sulfuric Acid Corrosion


Wet H2S Damage (Blistering/HIC/SOHIC/SSC)


Hydrofluoric Acid (HF)Corrosion


Creep / Stress Rupture


Flue Gas Dew Point Corrosion


High temperature H2/H2S Corrosion


Dissimilar Metal Weld (DMW) Cracking


Polythionic Acid Stress Corrosion Cracking


Hydrogen Stress Cracking in HF


Naphthenic Acid Corrosion (NAC)


Dealloying (Dezincification/ Denickelification)


Ammonium Bisulfide Corrosion


CO2 Corrosion


Ammonium Chloride Corrosion


Corrosion Fatigue


Hydrochloric Acid (HCl )  Corrosion


Fuel Ash Corrosion


High Temperature  Hydrogen Attack (HTHA)


Amine Corrosion




Corrosion Under Insulation (CUI)


Thermal Fatigue


Atmospheric  Corrosion


Sour Water Corrosion (acidic )


Ammonia Stress Corrosion Cracking


Refractory Degradation


Cooling Water Corrosion




Boiler Water I Condensate Corrosion


Temper Embrittlement


Microbiologically Induced Corrosion (MIC)




Liquid Metal Embrittlement (LME)


Caustic Stress Corrosion Cracking


Galvanic Corrosion


Caustic Corrosion


Mechanical Fatigue


Erosion I Erosion-Corrosion




Carbonate Stress Corrosion Cracking (ACSCC)


Vibration-Induced Fatigue   Withdrawn, See DM#54


Amine Cracking


Titanium Hydriding


Chloride Stress Corrosion Cracking


Soil Corrosion




Metal Dusting


Hydrogen Embrittlement


Strain Aging


Steam Blanketing  Withdrawn, See DM#30


Sulfate Stress Corrosion Cracking    Withdrawn


Thermal Shock


Phosphoric  Acid Corrosion




Phenol (carbolic acid) Corrosion


Graphitic Corrosion of Cast Irons


Ethanol Stress Corrosion Cracking


Short term Overheating – Stress Rupture (incl. Steam Blanketing)


Oxygen-Enhanced Ignition and Combustion


Brittle Fracture


Organic Acid Corrosion of Distillation Tower Overhead Systems


Sigma  Phase   Embrittlement


Brine Corrosion

33   885 °F (475 °C) Embrittlement


Concentration Cell Corrosion


Spheroidization (Softening)


Hydrofluoric Acid Stress Corrosion Cracking of Nickel Alloys


Stress Relaxation Cracking (Reheat Cracking)


Oxygenated Process Water Corrosion (Non-boiler)


                       Changes in API RP 571-2020 (3rd Edition) vs. API RP 571-2011 (2nd Edition)


This corrosion short course is available for in-house training, online and distance learning worldwide. It can also be customized to meet the specific needs of your organization.


Course Outline |Who Should Attend |Registration |In-House |On-Demand |Online Courses |PPT Slides+Testbank |Course List

 Course Outline

1. Introduction to Corrosion

   1.1 Corrosion: Definition and Examples

    1.2 Basic Concepts in Electrochemistry

    1.3 Why Do Metals Corrode

    1.4 Kinetics: the Rate of Corrosion

    1.5 How Do Metals Corrode: Different Forms of Corrosion

    1.6 General Methods for Corrosion Control Common

    1.7 Alloys Used in the Refining and Petrochemical Industries

2. Overview of API RP 571-2020 (3rd Edition)

     2.1 What's new in the latest edition (3rd edition) of API RP 571-2020 (Released in March 2020)

     2.2 What are the differences between the latest 3rd edition of API RP 571-2020 and the previous 2nd edition of API RP 571-2011 (Released in April 2011)

     2.3 Terms and Definitions


3. Damage Mechanisms

3.1 885 °F (475 °C) Embrittlement
3.2 Amine Corrosion
3.3 Amine Stress Corrosion Cracking
3.4 Ammonia Stress Corrosion Cracking
3.5 Ammonium Bisulfide Corrosion (Alkaline Sour Water)
3.6 Ammonium Chloride and Amine Hydrochloride Corrosion
3.7 Aqueous Organic Acid Corrosion
3.8 Atmospheric Corrosion
3.9 Boiler Water and Steam Condensate Corrosion
3.10 Brine Corrosion
3.11 Brittle Fracture
3.12 Carbonate Stress Corrosion Cracking
3.13 Carburization
3.14 Caustic Corrosion
3.15 Caustic Stress Corrosion Cracking
3.16 Cavitation
3.17 Chloride Stress Corrosion Cracking
3.18 C02 Corrosion
3.19 Concentration Cell Corrosion
3.20 Cooling Water Corrosion
3.21 Corrosion Fatigue
3.22 Corrosion Under Insulation
3.23 Creep and Stress Rupture
3.24 Dealloying [See Graphitic Corrosion (3.33) for Dealloying of Cast Iron]
3.25 Decarburization
3.26 Dissimilar Metal Weld Cracking
3.27 Erosion/Erosion-Corrosion
3.28 Ethanol Stress Corrosion Cracking
3.29 Flue Gas Dew Point Corrosion
3.30 Fuel Ash Corrosion
3.31 Galvanic Corrosion
3.32 Gaseous Oxygen-enhanced Ignition and Combustion
3.33 Graphitic Corrosion of Cast Irons
3.34 Graphitization
3.35 High-temperature H2/H2S Corrosion
3.36 High-temperature Hydrogen Attack
3.37 Hydrochloric Acid Corrosion
3.38 Hydrofluoric Acid Corrosion
3.39 Hydrofluoric Acid Stress Corrosion Cracking of Nickel Alloys
3.40 Hydrogen Embrittlement
3.41 Hydrogen Stress Cracking in Hydrofluoric Acid
3.42 Liquid Metal Embrittlement
3.43 Mechanical Fatigue (Including Vibration-induced Fatigue)

3.44 Metal Dusting
3.45 Microbiologically Influenced Corrosion
3.46 Naphthenic Acid Corrosion
3.47 Nitriding
3.48 Oxidation
3.49 Oxygenated Process Water Corrosion
3.50 Phenol (Carbolic Acid) Corrosion
3.51 Phosphoric Acid Corrosion
3.52 Polythionic Acid Stress Corrosion Cracking
3.53 Refractory Degradation
3.54 Stress Relaxation Cracking (Reheat Cracking)
3.55 Short-term Overheating-Stress Rupture (Including Steam Blanketing)
3.56 Sigma Phase Embrittlement
3.57 Soil Corrosion
3.58 Sour Water Corrosion (Acidic)
3.59 Spheroidization (Softening)
3.60 Strain Aging
3.61 Sulfidation
3.62 Sulfuric Acid Corrosion
3.63 Temper Embrittlement
3.64 Thermal Fatigue
3.65 Thermal Shock
3.66 Titanium Hydriding
3.67 Wet H2S Damage (Blistering/HIC/SOHIC/SSC)

4. Process Unit Process Flow Diagrams


5. Corrosion Prediction and Corrosion Modeling Software for the Refining and Petrochemical Industries

6. API RP 571 Course Examination

The end of course examination is similar to the API 571 certification examination in both the format and contents. It consists of 70 questions to be answered in 3.25 hours. The passing score is 70%.


Course Outline |Who Should Attend |Registration |In-House |On-Demand |Online Courses |PPT Slides+Testbank |Course List

Who Should Attend


Designers, Inspection Engineers, Maintenance Engineers, Plant Inspectors, Mechanical Engineers, and Process Engineers in the refining and petrochemical industries.


 Registration for This  Corrosion Course
  • Click here to register for this corrosion course online, or

  • Click here to download this corrosion course brochure with registration form in PDF format.

 In-House Training Corrosion Courses/On-Site Training Corrosion Courses


If you are concerned with corrosion in your business, in-house training or on-site training is a great solution to train a group of employees from design, production, operation, quality assurance, inspection and maintenance, and technical sales and support on corrosion control and corrosion prevention technology. The contents of all our corrosion courses can be customized to fit your organization's needs.


There is no limit to the number of participants required for in-house training corrosion courses or on-site training corrosion courses. We conduct the in-house or on-site  training corrosion courses at your company's premises worldwide and at a time convenient to your company.


Click here to contact us for a quotation.


 Corrosion Course-On-Demand


All our publicly scheduled corrosion short courses are conducted once a year. However, you do not need to wait for one year if you have missed any of the publicly scheduled corrosion courses as we have this unique corrosion course-on-demand scheme: we will conduct the course just for you on an one-on-one basis at a time and in a location convenient to you. This option costs significantly less than a full-scale in-house training program.


Click here to contact us for a quotation for taking this course as course-on-demand.


 Online and Distance Learning Corrosion Courses


All our corrosion short courses are available for online or offline distance learning. You can start an online course at any time and learn at your own comfortable pace, whenever and wherever you are. You have around-the-clock access to interactive and media-rich course materials, virtual labs, course instructions, course assignments, and course assessments. Discussions and questions related to the corrosion courses are posted on the website or exchanged through email for a period up to 3 months. Video conferencing or instant messaging can also be arranged for discussions of course topics. For those who do not have ready access to internet, we can send you our online course materials on a CD-ROM or DVD or USB memory stick for offline learning.

Click here to register this corrosion short course for online or distance learning.

Corrosion Course-On-Webex


Webex is hosted by Cisco, a product purpose-built for real-time web communications. If you are an existing user of Webex, or if you are willing to experience the power of Webex, we can conduct the course for you over Webex with audio and video presentations and interactions with the course instructor and other course attendees in real-time. It is just like the physical classroom settings that everyone can interact with each other. Your questions will be answered in real time by our instructor.


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 PowerPoint Slides and Test Banks for Trainers, Instructors, Tutors, University Lecturers and Professors


If you are involved in teaching or training, you may wish to purchase a complete set of the trainer's package for this training course. The trainer's package comes complete with ready-to-use PowerPoint slides (fully editable) and test bank (with answer keys). These ready-to-use PowerPoint slides contain high quality color photographs, illustrations, animations, audio and video clips. The test bank contains questions conveniently grouped into four categories: (1) true or false, (2) multiple choice, (3) calculation, and (4) reasoning and open-ended discussions. The trainer's package is suitable for in-house training and university teaching (30 lecture hours). This is exactly the same package that WebCorr uses to deliver our current training course.

The one-time lump sum fee allows your organization to use the training package and also modify it. For example, your organization may modify the course contents and re-name/re-brand the course under your organization’s name. WebCorr only retains the copyright of the original PowerPoint slides and test banks.


Click here to contact us if you need more information on the trainer's package.



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