Exam Name: Pressure Vessel Inspector
Certification Provider: API
Corresponding Certification: Individual Certification Programs
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Check Updated on: Oct 13, 2026
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API API-510 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Repairs, Alterations, Rerating, and Mechanical Integrity | 16% | - Pressure relieving devices and overpressure protection - Documentation and post-work verification - Authorization and responsibility for work - Rerating, reclassification, and nameplate updates - Repair vs alteration definitions and procedures |
| Topic 2: Damage Mechanisms and Corrosion Assessment | 22% | - High-temperature damage and material degradation - Damage assessment and prioritization - Internal, external, and localized corrosion - Corrosion under insulation (CUI) and environmental degradation - Cracking mechanisms (environmental, fatigue, creep) |
| Topic 3: Design, Materials, and Fabrication Rules | 22% | - Positive material identification (PMI) and traceability - ASME Section VIII, V, IX application - MAWP, thickness, and joint efficiency calculations - Flanges, bolting, gaskets, and special components - Welding, qualification, and PWHT requirements - Material selection, properties, and toughness requirements |
| Topic 4: Inspection Scope, Planning, and Data Evaluation | 28% | - Code scope, jurisdiction, and regulatory requirements - Records review and baseline data collection - TML/CML selection and measurement planning - Remaining life and corrosion rate calculations - Inspection methods and technique selection - Inspection interval determination and extension rules |
| Topic 5: Fitness-for-Service, RBI, and Pressure Testing | 12% | - API 579/ASME FFS-1 screening and assessment - Acceptance criteria and post-test evaluation - Hydrostatic, pneumatic, and leak testing rules - Risk-based inspection (RBI) principles and application |
API Pressure Vessel Inspector Sample Questions:
The function of an authorized inspection agency in accordance with API-510, is whose responsibility?
- A. Authorized engineering company
- B. Owner-user
- C. Authorized repair organization
- D. Authorized inspection agency
Correct Answer: B 🗳️
API-510 requires a hydrostatic test to be performed at what interval during the vessel's service life?
- A. Every 10 years
- B. Only after major repairs
- C. After each shutdown
- D. Every 5 years
Correct Answer: B 🗳️
Explain the training and continuous education requirements for pressure vessel inspectors as per API-510 to ensure high standards of safety and compliance.
Reveal Solution Discussion 0Correct Answer:
API-510 requires that pressure vessel inspectors undergo rigorous initial training, which includes both theoretical and practical components. Inspectors must understand the principles of pressure vessel design, the properties of materials used, and the dynamics of pressure systems.
Continuous education is also mandated, requiring inspectors to attend workshops, seminars, and refresher courses regularly to stay updated with the latest changes in regulations, inspection technologies, and best practices. This ongoing training ensures that inspectors maintain a high standard of expertise and are well-equipped to enforce safety and compliance effectively.
Outline the process and requirements for the decommissioning and safe disposal of pressure vessels according to API-510.
Reveal Solution Discussion 0Correct Answer:
Decommissioning a pressure vessel under API-510 involves a thorough cleaning to remove hazardous substances, a final inspection to document the vessel's condition, and ensuring all environmental regulations are met during disposal. The vessel may need to be dismantled in a controlled manner, especially if it contained toxic or radioactive substances. Documentation of the decommissioning process is crucial for compliance and environmental protection.
An internal inspection is required on above the ground 'Lower-risk' vessels:
- A. Every 4 years
- B. Any signs of leakage or deterioration detected in the interval between inspections
- C. Every 10 years.
- D. At the half corrosion-rate life
Correct Answer: B 🗳️
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