Cathodic Protection
Recertification Exam

Sample Exam  |  About - all the details  |  FAQ  |  Sign in with your password HERE.
STI has an exciting new program that allows existing STI cp certified testers to take an on-line exam to maintain their certification. Cost: $495.00
If it has been more than six months since your certificate expired, you are
not eligible for the online program. You must instead take the course again. 
Advantages Who qualifies How to sign up
  • Convenient
  • No traveling required!
  • Easy to follow, interactive exam 
  • Existing STI CP Testers 
  • Must be actively testing since being certified 
  • Must have understanding of current STI RP for cathodic protection testing, R051
  • First: Click HERE to purchase the exam and to register for the course.
  • Second: Submit copies of 3 recent cp test (test must be submitted for approval).
  • STI will send you information to access exam & resource materials on our website


View Sample Exam

The exam consists of three parts. 

  1. Written exam
  2. Practical exam for a galvanic (sti-P3) system
  3. Practical exam for an Impressed Current Cathodic Protection System

This is a view of how you can expect to be tested for Part 2 of the exam, which is the practical test for a sti-P3® tank.


Click here to view the sample.

About - all the details!

Test Questions

  • The written exam consists of 40-45 multiple choice questions.  Passing grade is 75% for the written exam.
  • The practical exams are interactive tests that describe various scenarios and ask you to conduct “testing” at a site.
  • Practical exam is pass/fail.  Student must demonstrate that they can test both galvanic and ICCS and interpret the results.
  • All answers can be found in STI posted reference materials.
  • All testing MUST be done in accordance with STI recommended practices.
  • Answers to exam should be per federal regulations, not individual state requirements.
  • The exam is open book.  Students are on their honor to complete the exam on their own, without help of any other person(s).


  • Students will have 60 days from the day of registration to complete the exam.
  • Once the exam is started, students will have 24 hours to complete it.
  • A clock with time remaining to take the exam will appear on every page of the exam.
  • STI certified cp testers may go into their portal on the STI website at any time to reprint their certificate, update their personal information and download reference materials.
  • No extensions will be given.
  • No refunds will be issued for exams that have expired. 


60 Day Policy

Our policy for taking the STI Recertification exam online is that you complete the process within 60 days.  If you pass the 60 days and still wish to take your exam online, you will need to pay a $150.00 processing fee. 


Test Copies:

  • Test copies will be reviewed once payment has been received. 
  • Submit three test copies by e-mail in PDF form to:, cc: 
  • Test copies must be approved before access to the exam is permitted.
  • Unapproved test copies: Participants may receive a full refund minus $75.00 administrative fee.


  • STI Cathodic Protection Certification is valid for three years.  
  • At the end of this period, the tester must again demonstrate that they are knowledgeable in current testing methods and criteria.
  • STI reserves the right to withdraw anyone’s certification at any time if it is determined that their conduct is unethical, (as related to cp testing).

Failed Tests

  • Individuals that fail the exam must attend an actual class, and pass that exam, in order to maintain their certifications.
  • No refunds will be issued for failed tests.
Questions / Contact:
  • For registration questions please contact Tiffany Multra or call 224-286-6321.