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How to Stop Caustic Vessel Corrosion

About this event

Missed the live event? Access the recording and bonus content here.


In this interactive 30-minute webinar (+ unlimited time for Q&A), Colin Bateman, IGS Mission Critical Equipment Maintenance Expert, EMEA, will be sharing his 20+ years of experience in process vessel corrosion mitigation, focusing on caustic environments.

Colin will draw upon his experience with organic linings, weld overlay, and thermal spray protection, and will review case studies from the field as well as test data.


Presenter | Colin Bateman


Colin has 20+ years experience in specifying protective solutions to mission critical assets. He currently supports asset owners in Europe and Middle East, mitigating their erosion and corrosion issues.

Caustic Corrosion in High PH Vessels

Caustic conditions, within MEROX and other demercaptanization processes can rapidly attack steel's protective magnetite layer and cause material wastage. Following destruction of the protective magnetite layer, NaOH can additionally react with exposed elemental iron to form atomic hydrogen, leading to hydrogen embrittlement, decreased wall thickness, and caustic stress corrosion cracking (CSCC) or caustic embrittlement. These phenomena have led to multiple plant failures under different caustic conditions.

A). View of vessel before failure and details of nozzle and trap support. Dimensions in inches. B). Micrograph showing corrosion pits at edge of fracture surface and inclusions, 600X. C). Micrograph showing auxiliary cracks in tensile-overload region of the main crack. D). Micrograph showing auxiliary cracks in stress-corrosion zone of main crack. 100x.


Webinar Agenda

  1. Caustic Corrosion in High PH Vessels
  2. Causes of Caustic Corrosion in Demercaptanization Processes + Two Failure Examples
  3. Caustic Corrosion: Material Selection
  4. Solutions to Metal Wastage Caused by Caustic Corrosion - Pros and Cons
  5. HVTS Alloy Cladding Suitability for Caustic Environment
  6. Case Study: HVTS Prevents the Need for Vessel Replacement
  7. Live Q&A with the speaker


About HVTS

To protect against caustic corrosion and cracking, the High Velocity Thermal Spray (HVTS) technology has been tested and successfully deployed as a solution. Traditional alloys that have previously been used in thermal spray and overlay options, such as Monel and Hastelloy, exhibit possible porosity and failures in aggressive caustic conditions. However, IGS modified NiCrMo-XX alloys provide effective protection of the carbon steel substrates in aggressive caustic environments. Learn more about HVTS alloy cladding for caustic environments here:

Who is going to attend?

This seminar is designed for engineers and managers responsible for the maintenance and integrity of process vessels, towers, and columns within refineries and petrochemical complexes.


Certificates of Attendance

A certificate of attendance will be issued to everyone who participates in 50%+ of the webinar.


Webinar Recording

This webinar will be recorded. The recording will be made available exclusively to the webinar registrants.


Registration Confirmation

After registering, you will receive an email with your unique link to join the webinar, please check your spam folder. If you don't receive your registration confirmation email, please contact marina.silva@integratedglobal.com

Hosted by

  • Team member
    CB T
    Colin Bateman Director of BD EMEA @ IGS

    Colin graduated in 1996 with a Masters degree in Mechanical Engineering, is a NACE Level 3 inspector with 20+ years of experience in developing and specifying protective barrier solutions and surface technologies for mission critical assets in the Energy Sector.

  • Team member
    AO T
    Anastasia Oshchepkova Integrated Global Services

Integrated Global Services

Surface Solutions for Mission Critical Equipment

Integrated Global Services delivers customized and engineered metal wastage solutions. IGS's local turnkey capabilities around the globe combined with a fast operational response solidified their position as a global leader in their field.