Free API 510 Exam Prep
API 510 Pressure Vessel Inspector
Prepare for the API 510 exam without spending hundreds on expensive prep courses. Free study guides, practice questions, flashcards, and related exam resources.
Quick Facts
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API API Inspector Certifications License: Complete Roadmap
Follow this path to organize your licensing and exam preparation
Master Closed-Book Calculations and Interval RulesYou are here
Start with corrosion rate, remaining life, required thickness, MAWP, and interval-setting logic because these are high-value closed-book skills.
Build Damage-Mechanism Recognition
Study API RP 571 concepts such as CUI, sulfidation, HTHA, amine cracking, and brittle-fracture risk so you can match service to likely deterioration.
Drill ASME/API Code Navigation
Practice finding joint efficiency, thickness, openings, welding qualification, and repair guidance quickly in the listed references.
Study Repairs, Rerating, Testing, and PRDs
Focus on decision-making after damage is found: repair or alter, test or waive, rerate or retire, and how documentation and pressure-relieving devices fit the workflow.
Finish with FFS, RBI, and Mixed Timed Sets
Use the final phase to connect the fitness-for-service and RBI provisions inside API 510 itself with full mixed practice sets that simulate both closed-book and open-book demands.
Can You Take the API 510 Exam?
Check if you meet the basic eligibility requirements
- •Qualifying experience must have been acquired within the last 10 years while employed by, or under contract with, an authorized inspection agency as defined in API 510.
- •Experience must be documented on the application and is subject to API verification.
- •The exam is an in-person core ICP program delivered through Prometric test centers.
- •API 510 certification must be recertified every 3 years through work requirements and continuing professional development.
API 510 Quick Facts
Time to Get Licensed
8-12 weeks typical for experienced fixed-equipment candidates
From start to license in hand
Total Cost Breakdown
Free API 510 Prep Tools
212 Practice Questions
Covers inspection planning, corrosion, code calculations, repairs, rerating, pressure testing, and FFS/RBI logic.
AI Tutor Support
Get help unpacking interval formulas, damage mechanisms, and code-rule reasoning.
2026 Current
Review the September 2026-May 2027 BOK/effectivity cycle and current 2026 fee schedule.
Free Practice
Start preparing before you pay for the official API exam and reference materials.
What You'll Study
11 chapters covering the exam topics in this guide
Chapter 1: Introduction, Scope & Certification Requirements
3 sections
Chapter 2: Inspection Planning, Data Evaluation & Remaining Life
3 sections
Chapter 3: Vessel Evaluation, Corrosion Averaging & Fitness-for-Service
3 sections
Chapter 4: ASME Section VIII Div 1 Design & Thickness Calculations
4 sections
Chapter 5: ASME Section VIII Fabrication, Welds & Joint Efficiency
3 sections
Chapter 6: Welding Inspection & Metallurgy (API 577 & ASME Sec IX)
3 sections
Chapter 7: Nondestructive Examination (ASME Section V)
3 sections
Chapter 8: Damage Mechanisms (API RP 571)
6 sections
Chapter 9: Pressure Vessel Inspection Practices (API RP 572 & API RP 578)
3 sections
Chapter 10: Pressure-Relieving Devices (API RP 576)
3 sections
Chapter 11: Repairs, Alterations, Rerating & Pressure Testing (API 510 & PCC-2)
6 sections
API 510 Exam Details
API 510 Pressure Vessel Inspector
Administered by American Petroleum Institute (API)
Exam Content Breakdown
Based on the official American Petroleum Institute (API) content outline
Code scope, jurisdiction, records, TML/CML strategy, interval calculations, remaining life, on-stream/nonintrusive inspection, and examination method selection.
General and localized corrosion, CUI, high-temperature damage, cracking mechanisms, and deterioration interpretation using API RP 571 concepts.
MAWP, required thickness, joint efficiency, materials and toughness, PMI, welding/PWHT, flanges, bolting, linings, and core ASME Section VIII/IX concepts.
Repair organization responsibilities, authorized inspector decisions, alteration versus repair, rerating, nameplate changes, PRD considerations, and post-work documentation.
Fitness-for-service and risk-based inspection as covered by API 510's own clauses (API 579-1/ASME FFS-1 and API RP 580 are not on the exam effectivity sheet), plus pressure or leak-test rules after repair or alteration.
What's Included
11 Chapters
Complete exam coverage
Practice Quizzes
With detailed explanations
Free to Start
No credit card required
Quality Exam Prep Shouldn't Cost Hundreds
I'm Ran Chen, an engineer with 20+ years of coding experience. I passed my Life Insurance license, EA exam, SIE, Series 6, 63, 65, and finally the CFP® exam.
Through all these exams, one thing became clear: exam prep is expensive. But with AI, we can change that. Quality preparation can now be free for everyone.
What's Next After the API 510?
After passing the API 510, you can pursue these career paths
API 570
Extend fixed-equipment inspection skills into in-service piping systems.
API 653
Add aboveground storage tank inspection to a mechanical-integrity career path.
API 571
Deepen corrosion and materials expertise that supports 510, 570, and 653 work.
API 510 Exam FAQ
Official American Petroleum Institute (API) Resources
Verify information with these official sources
More Free Resources
Ready to Start Your Free API 510 Prep?
Review the study guide, practice key concepts, and use the free tools at your own pace.