- Exam Code: API-510
- Exam Name: Pressure Vessel Inspector
- Certification Provider: API
- Corresponding Certification:Individual Certification Programs
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Check Updated on: Aug 16, 2026
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API API-510 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Inspection Scope, Planning, and Data Evaluation | 28% | - Inspection interval determination and extension rules - Records review and baseline data collection - Remaining life and corrosion rate calculations - Code scope, jurisdiction, and regulatory requirements - Inspection methods and technique selection - TML/CML selection and measurement planning |
| Damage Mechanisms and Corrosion Assessment | 22% | - Damage assessment and prioritization - High-temperature damage and material degradation - Corrosion under insulation (CUI) and environmental degradation - Cracking mechanisms (environmental, fatigue, creep) - Internal, external, and localized corrosion |
| Repairs, Alterations, Rerating, and Mechanical Integrity | 16% | - Pressure relieving devices and overpressure protection - Rerating, reclassification, and nameplate updates - Documentation and post-work verification - Repair vs alteration definitions and procedures - Authorization and responsibility for work |
| Design, Materials, and Fabrication Rules | 22% | - Material selection, properties, and toughness requirements - Positive material identification (PMI) and traceability - Flanges, bolting, gaskets, and special components - Welding, qualification, and PWHT requirements - ASME Section VIII, V, IX application - MAWP, thickness, and joint efficiency calculations |
| Fitness-for-Service, RBI, and Pressure Testing | 12% | - Risk-based inspection (RBI) principles and application - Hydrostatic, pneumatic, and leak testing rules - Acceptance criteria and post-test evaluation - API 579/ASME FFS-1 screening and assessment |
API Pressure Vessel Inspector Sample Questions:
1. Repairing a crack on a vessel should not be attempted without prior consultation with _________.
A) Pressure vessel engineer experienced in pressure vessel design
B) Production manager
C) The company writing the insurance on the vessel
D) The original manufacturer
2. Which API document should be consulted for the repair of pressure relieving devices as per API-510?
A) API 570
B) API 576
C) API 572
D) API 579
3. Which of the following relief devices is intended to work with steam boilers?
A) Safety Relief Valve.
B) Balanced Safety Relief.
C) Relief Valve.
D) Safety Valve.
4. Explain the significance of maintaining a corrosion monitoring program for pressure vessels under API-510 and describe the typical methodologies used.
5. When must both an internal and external inspection always be performed?
A) at installation of vessel
B) whenever there is a change in fluid service
C) whenever the vessel's ownership changes
D) whenever the vessel's ownership and location changes
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: B | Question # 3 Answer: D | Question # 4 Answer: Only visible for members | Question # 5 Answer: D |
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