Exam Name: Pressure Vessel Inspector
Certification Provider: API
Corresponding Certification: Individual Certification Programs
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- Total Questions: 175
- Updated on: Nov 07, 2026
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- Total Questions: 175
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- Total Questions: 175
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One purchase should cover the whole journey from first download to exam day, not just a stack of questions. Actual4dump bundles 175 verified practice questions for the API-510 exam with 365 days of free updates, a free demo, and support that stays reachable throughout.
API API-510 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Fitness-for-Service, RBI, and Pressure Testing | 12% | - Acceptance criteria and post-test evaluation - API 579/ASME FFS-1 screening and assessment - Risk-based inspection (RBI) principles and application - Hydrostatic, pneumatic, and leak testing rules |
| Damage Mechanisms and Corrosion Assessment | 22% | - Cracking mechanisms (environmental, fatigue, creep) - High-temperature damage and material degradation - Damage assessment and prioritization - Internal, external, and localized corrosion - Corrosion under insulation (CUI) and environmental degradation |
| Repairs, Alterations, Rerating, and Mechanical Integrity | 16% | - Authorization and responsibility for work - Pressure relieving devices and overpressure protection - Repair vs alteration definitions and procedures - Rerating, reclassification, and nameplate updates - Documentation and post-work verification |
| Design, Materials, and Fabrication Rules | 22% | - Welding, qualification, and PWHT requirements - Material selection, properties, and toughness requirements - MAWP, thickness, and joint efficiency calculations - Flanges, bolting, gaskets, and special components - Positive material identification (PMI) and traceability - ASME Section VIII, V, IX application |
| Inspection Scope, Planning, and Data Evaluation | 28% | - Inspection interval determination and extension rules - Code scope, jurisdiction, and regulatory requirements - Records review and baseline data collection - Inspection methods and technique selection - Remaining life and corrosion rate calculations - TML/CML selection and measurement planning |
Inside Our API Pressure Vessel Inspector Practice Package
This package includes 175 practice questions for the API Pressure Vessel Inspector exam. Every answer is verified by an experienced team of experts, so you can trust what you study.
The API Pressure Vessel Inspector exam requires a score of 550 (scaled score, range 200–750) to pass, and the official registration fee is $875 (API member) / $1,125 (non-member) USD. Factoring in both before you start helps you plan the full cost of certification.
Many candidates combine practice questions with official training. Recommended options include:
One purchase covers the full journey: three versions of the material (PDF, PC test engine, and online version), a free demo to try before buying, 365 days of free updates delivered automatically, and customer service you can reach whenever a question comes up. Nothing essential is sold separately.
The API Pressure Vessel Inspector practice questions are organized around the official exam objectives. Key topics include:
- Fitness-for-Service, RBI, and Pressure Testing (12%)
- Inspection Scope, Planning, and Data Evaluation (28%)
- Damage Mechanisms and Corrosion Assessment (22%)
Keeping your revision mapped to these objectives makes every session productive.
Yes. Candidates who come back for additional certifications receive discounts when they buy further practice packages. If you already hold one of our products, ask our staff about the current returning-customer offer before your next purchase.
You can register for the API Pressure Vessel Inspector exam through the official channels:
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
You can confirm the current eligibility requirements on the official API-510 exam page before you register.
The API Pressure Vessel Inspector exam contains 170 (140 scored + 30 unscored pretest; 110 closed-book + 60 open-book) questions, and you will have 450 (total exam day: 7.5 hours; 165 min closed-book + 225 min open-book + 45 min break) minutes to complete them. Training against the same volume of questions prepares both your knowledge and your pace.
API Pressure Vessel Inspector Sample Questions:
What is the minimum temperature of the metal during a pressure test of a 2.125" thick vessel?
- A. Minimum temperature shall be at least 20˚F above the minimum design metal temperature
- B. Minimum temperature shall be at least 30˚F above the minimum design metal temperature
- C. Minimum temperature shall be ambient temperature but not less than 55°F
- D. Minimum temperature shall be 60°F
Correct Answer: B 🗳️
What is the recommended shell temperature, per API 510 during a hydrostatic test of a vessel,
1"thick?
- A. 30 ° F above testing liquids temperature
- B. 65 ° F above ambient
- C. 10 ° F above MDMT
- D. 30 ° F above ambient
Correct Answer: C 🗳️
Aboveground vessels shall be inspected, preferably while in operation, at least every ___________ years or at the same interval as the required internal/on-stream inspection
- A. 20 years
- B. 10 years
- C. 15 years
- D. 5 years
Correct Answer: D 🗳️
Which type of corrosion mechanism is not directly addressed in API-510?
- A. Atmospheric corrosion
- B. Galvanic corrosion
- C. Crevice corrosion
- D. High-temperature hydrogen attack
Correct Answer: A 🗳️
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.
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