The API 570 Piping Inspector certification, awarded by the American Petroleum Institute (API), is the premier globally recognized credential for professionals evaluating the structural integrity, safety, and operational reliability of in-service metallic and fiberglass-reinforced plastic (FRP) piping systems. Accredited under ISO/IEC 17024 by ANAB, this certification validates an inspector’s technical mastery over maintenance, inspection, alteration, and repair protocols according to international energy standards.
Before applying for the exam, candidates must navigate API’s education and experience prerequisites, master the official Body of Knowledge (BoK), and prepare for the 2-part exam structure.
Important Note on Exam Administration:
Capgrow provides specialized exam preparation training, codebook navigation drills, and calculation practice. The final API 570 examination, candidate eligibility review, and official credentialing are administered independently by the American Petroleum Institute (API) via Prometric computer testing centers.
1. Eligibility Requirements & Prerequisites
API enforces strict eligibility criteria based on a combination of formal education and relevant industry experience acquired within the last 10 years:
- B.S. or Higher in Engineering / Technology (or 3+ years technical military service): Minimum 1 year of experience supervising or performing in-service piping inspection activities.
- 2-Year Degree / Certificate in Engineering/Technology (or 2 years technical military service): Minimum 2 years of experience in piping design, construction, repair, operation, or inspection (with at least 1 year in direct piping inspection).
- High School Diploma or Equivalent: Minimum 3 years of experience in piping design, construction, repair, operation, or inspection (with at least 1 year in direct piping inspection).
- No Formal Education: Minimum 5 or more years of experience in piping design, construction, repair, operation, or inspection (with at least 1 year in direct piping inspection).
2. Core Body of Knowledge (BoK) & Referenced Codes
The API 570 exam evaluates a candidate’s practical understanding of primary inspection codes, mechanical design standards, and damage mechanisms:
- API Codes & Standards:
- API 570: In-service Inspection, Rating, Repair, and Alteration of Piping Systems.
- API RP 571: Damage Mechanisms Affecting Fixed Equipment in the Refining Industry (e.g., sulfidation, CUI, creep, erosion-corrosion).
- API RP 574: Inspection Practices for Piping System Components.
- API RP 577: Welding Processes, Inspection, and Metallurgy.
- API RP 578: Material Verification Program for New and Existing Assets (PMI).
- ASME Codes:
- ASME B31.3: Process Piping Design and Construction.
- ASME B16.5: Pipe Flanges and Flanged Fittings.
- ASME Section IX: Welding and Brazing Qualifications.
- ASME Section V: Non-Destructive Examination (NDE).
How Capgrow Supports Your Preparation:
Trainees enrolled in Capgrow’s API 570 Training receive structured codebook navigation manuals, practice calculation sets (corrosion rates, remaining life, MAWP), and mock exam simulations to build confidence for exam day.
3. Final Exam Format & Delivery
The API 570 examination is a rigorous, 7.5-hour computer-based test delivered at Prometric testing centers worldwide:
- Question Breakdown: 170 total multiple-choice questions (140 scored questions and 30 unscored pretest questions).
- Two-Part Structure:
- Closed-Book Portion: 110 questions (2.75 hours) testing fundamental concepts, definitions, inspection procedures, and damage mechanisms.
- Open-Book Portion: 60 questions (3.75 hours) focusing on codebook lookup, complex calculations (MAWP, minimum required wall thickness, inspection intervals), and scenario analysis.
- Digital Codebooks: Reference PDFs of allowed codes are provided directly on-screen during the open-book portion.
4. Exam Preparation & Strategy Tips
- Master Minimum Thickness & Remaining Life Formulas: Practice solving API 570 corrosion rate ($C_r$), remaining life ($RL$), and maximum allowable working pressure ($MAWP$) calculations without hesitation.
- Get Familiar with On-Screen Code Documents: Practice using PDF search functions, bookmarks, and tables of contents to quickly locate specific ASME/API clauses during the open-book portion.
- Study API RP 571 Damage Mechanisms Thoroughly: Pay close attention to critical temperature thresholds, affected materials, and prevention methods for common refining damage mechanisms.
5. Recertification & Continuing Development
To maintain an active API 570 license, inspectors must complete recertification steps:
- 3-Year Cycle: Demonstrate active engagement in piping inspection (at least 20% of time spent performing or supervising piping inspection activities) and complete 24 Continuing Professional Development (CPD) hours.
- 6-Year Requirement: Complete an online, open-book web quiz covering code changes and updates over the prior six years.
For more information on certification, please refer here.
