Internal Corrosion Technologist

Internal Corrosion Technologist Certification

Internal Corrosion Technologist

The Internal Corrosion Technologist exam is designed to assess whether a candidate has a thorough understanding of electrochemical and corrosion principles and is capable of performing the field tests required to appropriately monitor an internal corrosion control program. Internal Corrosion Technologist exam candidates should have sufficient knowledge and experience to determine corrective action for intermediate-level internal corrosion problems within a pipeline system and be able to select a mitigation method suitable for use on natural gas pipeline systems (taking into account all applicable variables related to a particular system). They should also be able to support the development and implementation of an internal corrosion integrity management program.

Certification candidates have four (4) years to complete all requirements, including a successful completion of the exam, and an approved application with the required work experience and education requirements.

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Who should apply

Successful candidates will have knowledge in the following areas of corrosion:

  • Corrosion Theory
  • Field Investigation
  • Internal Corrosion Mitigation
  • Internal Corrosion Integrity Management

Steps to Certification

The steps to certification can be taken in any order
  1. Work experience and education requirements

    4 years of verifiable internal corrosion-related work experience in a pipeline environment


    Bachelor’s Degree in Biology, Microbiology, Chemistry, Chemical Engineering, or Metallurgical Engineering


    2 years of verifiable internal corrosion-related work experience in a pipeline environment

  2. Course requirements and suggestions

    Successful completion of the following course: NACE Internal Corrosion for Pipelines - Basic Course

    Successful completion of the Ethics for the Corrosion Professional course or an equivalent training

  3. Certification and application requirements

    Approved Internal Corrosion Technologist Application

  4. Core exam requirements

    Certification Exam – Internal Corrosion Technologist Theory Exam

    Note: This exam is available on Computer Based Testing (CBT) at Pearson Virtual University Experience (VUE)

    Certification Exam – Internal Corrosion Technologist Practical Exam

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Certification Exams

NII certification requirements include the practical exam administered at the end of course, along with an exam delivered via computer-based testing (CBT).

The multiple-choice CBT exam is scheduled separately from the course and delivered via Pearson VUE. A voucher needed to schedule the CBT exam is included as part of your initial course registration.

Renewal requirements

An approved recertification application is required every 3 years. The work experience requirement for renewals for all certifications is one and half (1.5) years for the most recent three (3) year period. Additionally, some certifications have other requirements related to responsibility in charge.

As you prepare for renewal, please visit My Certification Portal to log and manage your work experience and Professional Development Hours (PDH's) needed. Your work experience and PDH's will be submitted as part of your renewal application but you can input PDH's at any time. See the certification renewal guide for PDH's requirements, our sample training PDH guide, and our PDH how-to videos.

Certification holders are required to pay a non-refundable processing fee for renewal.

NOTE: NACE reserves the right to return any incomplete applications or those that do not meet the requirements. All application fees are non-refundable. To avoid processing delays or forfeiture of fees, please ensure that the application is complete, meets all the requirements and payment has been received.