Exam Name: Pressure Vessel Inspector
Certification Provider: API
Corresponding Certification: Individual Certification Programs
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- Total Questions: 175
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Do not judge a question bank by its size. What matters for the API-510 exam is validity and accuracy, and Actual4dump's API Pressure Vessel Inspector bank is built on exactly that — expert-verified answers over inflated question counts.
API API-510 Exam Overview:
| Certification Vendor: | American Petroleum Institute (API) |
|---|---|
| Exam Name: | API 510 Pressure Vessel Inspector Certification Exam |
| Exam Number: | API-510 |
| Certificate Validity Period: | 3 years |
| Related Certifications: | API 571 Damage Mechanisms API 570 Piping Inspector API 576 Pressure Relieving Devices API 653 Storage Tank Inspector |
| Available Languages: | English |
| Exam Duration: | 450 (total exam day: 7.5 hours; 165 min closed-book + 225 min open-book + 45 min break) |
| Real Exam Qty: | 170 (140 scored + 30 unscored pretest; 110 closed-book + 60 open-book) |
| Exam Format: | Computer-based test, Multiple-choice questions, Two-part: closed-book (no references) + open-book (on-screen code access only) |
| Exam Price: | $875 (API member) / $1,125 (non-member) USD |
| Passing Score: | 550 (scaled score, range 200–750) |
| Recommended Training: | API 510 Body of Knowledge API Official Training Resources |
| Exam Registration: | API Certification Portal Prometric Scheduling |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | In-person computer-based test at Prometric authorized centers worldwide; no remote testing available |
| Pre Condition: | 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 |
| Official Syllabus URL: | https://www.api.org/certification/icp/programs/510 |
API API-510 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Design, Materials, and Fabrication Rules | 22% | - Welding, qualification, and PWHT requirements - MAWP, thickness, and joint efficiency calculations - Material selection, properties, and toughness requirements - ASME Section VIII, V, IX application - Positive material identification (PMI) and traceability - Flanges, bolting, gaskets, and special components |
| Topic 2: Damage Mechanisms and Corrosion Assessment | 22% | - High-temperature damage and material degradation - Cracking mechanisms (environmental, fatigue, creep) - Corrosion under insulation (CUI) and environmental degradation - Internal, external, and localized corrosion - Damage assessment and prioritization |
| Topic 3: Fitness-for-Service, RBI, and Pressure Testing | 12% | - Acceptance criteria and post-test evaluation - Hydrostatic, pneumatic, and leak testing rules - Risk-based inspection (RBI) principles and application - API 579/ASME FFS-1 screening and assessment |
| Topic 4: Inspection Scope, Planning, and Data Evaluation | 28% | - Inspection methods and technique selection - Remaining life and corrosion rate calculations - Code scope, jurisdiction, and regulatory requirements - Inspection interval determination and extension rules - Records review and baseline data collection - TML/CML selection and measurement planning |
| Topic 5: Repairs, Alterations, Rerating, and Mechanical Integrity | 16% | - Repair vs alteration definitions and procedures - Documentation and post-work verification - Authorization and responsibility for work - Pressure relieving devices and overpressure protection - Rerating, reclassification, and nameplate updates |
API-510 Exam Facts: What to Know Before You Commit
API recommends the following official training resources:
Choose the format that fits your schedule, then reinforce it with regular question practice.
The latest exam information lists 170 (140 scored + 30 unscored pretest; 110 closed-book + 60 open-book) questions for the API-510 exam, to be completed within 450 (total exam day: 7.5 hours; 165 min closed-book + 225 min open-book + 45 min break) minutes. Knowing the format cold is half the battle — timed practice handles the other half.
These are the core domains of the API Pressure Vessel Inspector blueprint:
- Repairs, Alterations, Rerating, and Mechanical Integrity (16%)
- Design, Materials, and Fabrication Rules (22%)
- Inspection Scope, Planning, and Data Evaluation (28%)
The remaining domains appear in the full official outline, all of which our bank addresses.
API sets the following prerequisites for the API Pressure Vessel Inspector: 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.
Check the current requirements on the official certification page before scheduling.
Validity is maintained, not assumed. Our dedicated IT team checks the system and pushes new versions to the site continuously, so the API-510 bank on sale is always the latest — with expert-verified answers across the API Pressure Vessel Inspector objectives. You can also pick the format that fits your devices: an easy-to-read PDF, a Windows PC test engine, or a browser-based online engine for Windows, Mac, Android, and iOS. Questions? Support replies to instant messages and emails within two hours.
Upon successful payment, the complete materials are available immediately: a download link on screen and an automatic email to your mailbox within about a minute. If nothing arrives within two hours, check spam and contact support. Every purchase carries a 365-day service warranty — you can download the latest valid version free whenever it is released, no matter when you bought — and a 50% renewal discount follows when the period ends.
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Yes, we keep our promises — in writing. If you fail the corresponding exam within 60 days of purchase, email us a scanned copy of your enrollment slip and your official Score Report PDF within two days of the exam date; we process verified refunds in full within seven days. The exclusions are plain: exams taken within three days of purchase, candidate names that do not match the payer, and free or expired products. If you prefer, we will exchange your product for two others of equal value at no charge.
As of the latest information, the API-510 exam's passing score is 550 (scaled score, range 200–750) and the registration fee is $875 (API member) / $1,125 (non-member) USD. API can adjust either figure, so verify both on the official site before you book.
API Pressure Vessel Inspector Sample Questions:
What two conditions should be considered in selecting the techniques(s) to be used for the inspection of a pressure vessel?
- A. The condition of the vessel and the environment in which the vessel operates
- B. The condition of the vessel and the recommendations described by NBIC
- C. The recommendation of the repair organization and the environment in which the vessel operates
- D. The condition of the vessel and the recommendations of the repair organization
Correct Answer: A 🗳️
When does the API-510 Inspection Code apply?
- A. Pressure vessel being fabricated to ASME Section VIII, Division 1 or 2
- B. Vessels after they have been placed in service
- C. Only pressure vessels being fabricated for refinery/petro-chemical service
- D. Vessels constructed to API-572
Correct Answer: B 🗳️
Describe the process and importance of obtaining third-party verification of pressure vessel inspections under API-510.
Reveal Solution Discussion 0Correct Answer:
Obtaining third-party verification of pressure vessel inspections under API-510 is crucial for ensuring the impartiality and accuracy of the inspection process. This involves engaging independent auditors or certification bodies to review and verify the results of inspections conducted by in-house or contracted inspectors. The third-party reviewers assess the thoroughness of the inspection, the adherence to API-510 standards, and the accuracy of the documentation. This process helps to maintain high standards of safety and compliance and provides an additional layer of assurance that pressure vessels are fit for continued service.
A corroded area in a carbon steel vessel is being repaired by using weld overlay (weld build-up).
The vessel surface should be examined by:
- A. MT or PT after welding, and UT flaw detection after 24 hours
- B. MT or PT before welding
- C. MT or PT after welding
- D. MT or PT before and after welding
Correct Answer: D 🗳️
An in-service vessel is being repaired or altered.
If there is a conflict between the requirements of API 510 and the legal jurisdiction, which should be followed?
- A. the most stringent requirements
- B. the legal jurisdiction
- C. either set of requirements based on engineer and AI approval
- D. API 510
Correct Answer: A 🗳️
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