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API API-510 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Repairs, Alterations, Rerating, and Mechanical Integrity | 16% | - Authorization and responsibility for work - Pressure relieving devices and overpressure protection - Documentation and post-work verification - Rerating, reclassification, and nameplate updates - Repair vs alteration definitions and procedures |
| Topic 2: Design, Materials, and Fabrication Rules | 22% | - ASME Section VIII, V, IX application - Flanges, bolting, gaskets, and special components - Welding, qualification, and PWHT requirements - Positive material identification (PMI) and traceability - MAWP, thickness, and joint efficiency calculations - Material selection, properties, and toughness requirements |
| Topic 3: Inspection Scope, Planning, and Data Evaluation | 28% | - Records review and baseline data collection - Inspection interval determination and extension rules - Code scope, jurisdiction, and regulatory requirements - TML/CML selection and measurement planning - Inspection methods and technique selection - Remaining life and corrosion rate calculations |
| Topic 4: Fitness-for-Service, RBI, and Pressure Testing | 12% | - API 579/ASME FFS-1 screening and assessment - Hydrostatic, pneumatic, and leak testing rules - Risk-based inspection (RBI) principles and application - Acceptance criteria and post-test evaluation |
| Topic 5: Damage Mechanisms and Corrosion Assessment | 22% | - Corrosion under insulation (CUI) and environmental degradation - Cracking mechanisms (environmental, fatigue, creep) - Damage assessment and prioritization - High-temperature damage and material degradation - Internal, external, and localized corrosion |
API Pressure Vessel Inspector Sample Questions:
1. As per API 510, what is the maximum allowed time between the testing of pressure relieving devices?
A) 5 years
B) 10 years
C) Pressure relief devices must be tested at every shutdown
D) Pressure relief valves shall be tested at intervals that are frequent enough to verify that the valves perform reliably
2. Which API standard is specifically mentioned within API-510 for corrosion and materials expertise?
A) API 580
B) API 571
C) API 570
D) API 579
3. The best description of Temper embrittlement is:
A) Loss of ductility and notch toughness due to exposure above 650°F - 1100°F
B) Cracking due to low temperature service
C) Cracking due to operating at high temperatures above 650°F - 1100°F
D) Flaking of the metal surfaces, causing dip pits due to exposure above 650ºF -1100°F
4. Describe the implications of non-compliance with API-510 standards on corporate reputation and operational legality.
5. Under API-510, how often must the qualifications of a pressure vessel inspector be revalidated through testing or continuing education?
A) Every 6 years
B) Every 10 years
C) Every 3 years
D) Every 5 years
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: B | Question # 3 Answer: A | Question # 4 Answer: Only visible for members | Question # 5 Answer: C |








