Exam Name: Pressure Vessel Inspector
Certification Provider: API
Corresponding Certification: Individual Certification Programs
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- Total Questions: 175
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- Total Questions: 175
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In 2026, a certificate is earned through preparation, and good preparation starts with material you can rely on. ITCertMagic gives API-510 candidates exactly that: 175 practice questions for the API Pressure Vessel Inspector exam, verified by experts and refreshed as the exam evolves.
API API-510 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Inspection Scope, Planning, and Data Evaluation | 28% | - Code scope, jurisdiction, and regulatory requirements - TML/CML selection and measurement planning - Inspection interval determination and extension rules - Inspection methods and technique selection - Records review and baseline data collection - Remaining life and corrosion rate calculations |
| Fitness-for-Service, RBI, and Pressure Testing | 12% | - API 579/ASME FFS-1 screening and assessment - Risk-based inspection (RBI) principles and application - Acceptance criteria and post-test evaluation - Hydrostatic, pneumatic, and leak testing rules |
| Damage Mechanisms and Corrosion Assessment | 22% | - Corrosion under insulation (CUI) and environmental degradation - Cracking mechanisms (environmental, fatigue, creep) - High-temperature damage and material degradation - Damage assessment and prioritization - Internal, external, and localized corrosion |
| Repairs, Alterations, Rerating, and Mechanical Integrity | 16% | - Pressure relieving devices and overpressure protection - Authorization and responsibility for work - Rerating, reclassification, and nameplate updates - Repair vs alteration definitions and procedures - Documentation and post-work verification |
| Design, Materials, and Fabrication Rules | 22% | - Flanges, bolting, gaskets, and special components - Welding, qualification, and PWHT requirements - Material selection, properties, and toughness requirements - Positive material identification (PMI) and traceability - MAWP, thickness, and joint efficiency calculations - ASME Section VIII, V, IX application |
API-510 Exam: Frequently Asked Questions
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:
- Inspection Scope, Planning, and Data Evaluation (28%)
- Design, Materials, and Fabrication Rules (22%)
- 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:
Describe the considerations for API-510 compliance when converting existing vessels for new operational uses.
Reveal Solution Discussion 0Correct Answer:
API-510 compliance when converting existing vessels for new uses involves rigorous evaluations to ensure that the vessels can safely handle the new operational conditions. This includes a complete reassessment of the vessel's design against the new process requirements, such as changes in pressure, temperature, or chemical compatibility. Additional inspections and possibly modifications might be necessary to meet the new operational standards. Detailed documentation of all changes, tests, and inspections must be maintained as part of the compliance process under API-510.
Explain how API-510 addresses the retrofitting and upgrading of aging pressure vessels to meet modern operational demands.
Reveal Solution Discussion 0Correct Answer:
API-510 provides comprehensive guidelines for retrofitting and upgrading aging pressure vessels to meet modern operational demands. This includes assessing the current condition of the vessel, determining the feasibility of upgrades or retrofits, and implementing modifications in compliance with current safety standards. The standard outlines procedures for replacing outdated components with modern materials and technology that enhance performance and safety. Thorough testing and re- certification are required after any retrofitting work to ensure that the vessel continues to operate safely under the new conditions.
Who must be consulted before the repair of a crack at a discontinuity where stress concentrations may be serious?
- A. The pressure vessel engineer
- B. The owner-user
- C. The vessel manufacturer
- D. The National Board inspector
Correct Answer: A 🗳️
In API-510, what is the minimum required interval for external inspections if no RBI (Risk-Based Inspection) is implemented?
- A. 10 years
- B. 1 year
- C. 15 years
- D. 5 years
Correct Answer: D 🗳️
What action is required under API-510 if a pressure vessel's corrosion rate exceeds expected values?
- A. Recalculation of the vessel's remaining life
- B. No specific action required
- C. Notification of the API
- D. Immediate shutdown
Correct Answer: A 🗳️
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