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API API-510 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Repairs, Alterations, Rerating, and Mechanical Integrity | 16% | - Authorization and responsibility for work - Pressure relieving devices and overpressure protection - Repair vs alteration definitions and procedures - Documentation and post-work verification - Rerating, reclassification, and nameplate updates |
| Inspection Scope, Planning, and Data Evaluation | 28% | - Code scope, jurisdiction, and regulatory requirements - Remaining life and corrosion rate calculations - Inspection interval determination and extension rules - Records review and baseline data collection - Inspection methods and technique selection - TML/CML selection and measurement planning |
| Design, Materials, and Fabrication Rules | 22% | - ASME Section VIII, V, IX application - Flanges, bolting, gaskets, and special components - Welding, qualification, and PWHT requirements - MAWP, thickness, and joint efficiency calculations - Positive material identification (PMI) and traceability - Material selection, properties, and toughness requirements |
| Damage Mechanisms and Corrosion Assessment | 22% | - Internal, external, and localized corrosion - Cracking mechanisms (environmental, fatigue, creep) - Damage assessment and prioritization - Corrosion under insulation (CUI) and environmental degradation - High-temperature damage and material degradation |
| Fitness-for-Service, RBI, and Pressure Testing | 12% | - API 579/ASME FFS-1 screening and assessment - Hydrostatic, pneumatic, and leak testing rules - Acceptance criteria and post-test evaluation - Risk-based inspection (RBI) principles and application |
Common Questions About the API Pressure Vessel Inspector Exam
The API Pressure Vessel Inspector (exam code API-510) is the exam you pass to earn the Authorized Pressure Vessel Inspector certification, a credential at the Professional level. It is also connected with related credentials such as API 570 Piping Inspector, API 653 Storage Tank Inspector, API 571 Damage Mechanisms, API 576 Pressure Relieving Devices. If you are mapping out a certification path with API, this exam is a milestone worth planning around.
The API-510 exam includes 170 (140 scored + 30 unscored pretest; 110 closed-book + 60 open-book) questions, and you have 450 (total exam day: 7.5 hours; 165 min closed-book + 225 min open-book + 45 min break) to complete them. With that many questions on the clock, pacing is part of the challenge: divide your time into rough blocks as you go, and flag the items that stall you so you can circle back at the end instead of burning minutes on a single question. A week or two before your exam date, sit at least one full timed session in the PracticeVCE test engine under the same time limit, so the pace feels familiar rather than frantic on the day.
You need 550 (scaled score, range 200–750) to pass the API-510 exam, and the official registration fee is $875 (API member) / $1,125 (non-member) USD. That fee is due again in full for every retake, which makes thorough preparation the cheaper investment by far. Before you book your seat, test yourself with the PracticeVCE practice questions until you are scoring comfortably above the passing mark on a consistent basis — it is the simplest way to avoid paying for the same exam twice.
Education + experience: BS/Eng Tech: 1 year; 2-yr degree: 2 years; High school: 3 years; No degree: 5 years. All require minimum 1 year performing/supervising pressure vessel inspection work within last 10 years
Eligibility rules can be adjusted by API over time, so before you register, confirm the current requirements on the official exam page: view the official API-510 exam information.
You can book the API-510 exam through the official registration channels below:
How the exam is taken: In-person computer-based test at Prometric authorized centers worldwide; no remote testing available.
API lists the following official training options for candidates preparing for this exam:
Once you have worked through the training, measure your readiness with the 175 practice questions from PracticeVCE — they show you exactly which topics still need attention before you book the exam.
Yes. PracticeVCE offers a free PDF demo of the API-510 practice questions, so you can judge the quality of the material firsthand before paying anything. Every purchase also includes 365 days of free updates — if API changes the exam during that year, your material changes with it. And when the free update period expires, you can extend it at a 50% discount from within your member zone.
Every API-510 purchase at PracticeVCE is backed by a 100% Money Back Guarantee: if you take the corresponding exam within 60 days of your purchase and do not pass, you can apply for a full refund. The guarantee has clear conditions — it does not apply if you sit the exam within 3 days of purchase, if you downloaded the material but never actually took the exam, or to free materials and expired orders, and the candidate name must match the payer name. To file a claim, send a scan of your exam enrollment slip together with your official Score Report PDF within 2 days of the exam; claims are processed within 7 days. If you would rather not take a refund, you can exchange the product instead and receive two additional exam preparation products of equal value for free, while your original product keeps its update service. Delivery itself is instant: your material is available for download right after payment and is also sent to your email within one minute — if it has not arrived within 2 hours, contact our customer service. There is no limit on how many computers you can install it on.
The official API Pressure Vessel Inspector outline divides the exam content into 5 main domains. The first three are:
- Repairs, Alterations, Rerating, and Mechanical Integrity — 16%
- Fitness-for-Service, RBI, and Pressure Testing — 12%
- Inspection Scope, Planning, and Data Evaluation — 28%
That is only the headline view — scroll back up to the Exam Topics section on this page for the complete domain-by-domain breakdown before you plan your study schedule.
API Pressure Vessel Inspector Sample Questions:
When discussing repairs to a pressure vessel what is the definition of 'construction codes'?
- A. The API 510 Code
- B. The Code the vessel was constructed to including non-standard and jurisdictional special vessels
- C. The current ASME Code edition
- D. The NBIC
Correct Answer: B 🗳️
Explain how API-510 standards ensure the safe operation of pressure vessels within nuclear power plants.
Reveal Solution Discussion 0Correct Answer:
In nuclear power plants, API-510 ensures the safe operation of pressure vessels by setting stringent inspection and maintenance standards that address the unique risks associated with radioactive materials. This includes specialized training for inspectors, the use of advanced non- destructive testing techniques that can detect minute defects, and rigorous protocols for documentation and compliance verification. API-510 also emphasizes the importance of lifecycle management and periodic safety reviews to adapt to the evolving regulatory landscape and technological advancements in the nuclear industry.
Which factor is not considered when determining the inspection intervals for pressure vessels according to API-510?
- A. Previous paint color
- B. Service history
- C. Vessel location
- D. Vessel age
Correct Answer: A 🗳️
Describe the training considerations for ensuring inspectors are competent in both API-510 and emerging digital inspection technologies.
Reveal Solution Discussion 0Correct Answer:
Ensuring that inspectors are competent in both API-510 and emerging digital inspection technologies requires a multifaceted training approach. Training programs should include foundational courses on API-510 standards, coupled with hands-on training in digital tools like 3D scanning, drone inspections, and digital radiography. It's also crucial to provide continuous learning opportunities through workshops, seminars, and online courses that cover the latest technological advancements.
Furthermore, practical experience with supervised fieldwork allows inspectors to apply their knowledge in real-world scenarios, ensuring they are proficient in both the standard practices and the latest digital technologies.
According to API-510, which material grade does not require impact testing at temperatures above
0°F?
- A. Carbon steel
- B. Nickel alloy
- C. Austenitic stainless steel
- D. Aluminum
Correct Answer: C 🗳️
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