Exam Name: Pressure Vessel Inspector
Certification Provider: API
Corresponding Certification: Individual Certification Programs
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API API-510 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Design, Materials, and Fabrication Rules | 22% | - Material selection, properties, and toughness requirements - Flanges, bolting, gaskets, and special components - Positive material identification (PMI) and traceability - ASME Section VIII, V, IX application - Welding, qualification, and PWHT requirements - MAWP, thickness, and joint efficiency calculations |
| Topic 2: Inspection Scope, Planning, and Data Evaluation | 28% | - Inspection interval determination and extension rules - TML/CML selection and measurement planning - Inspection methods and technique selection - Remaining life and corrosion rate calculations - Records review and baseline data collection - Code scope, jurisdiction, and regulatory requirements |
| Topic 3: Repairs, Alterations, Rerating, and Mechanical Integrity | 16% | - Rerating, reclassification, and nameplate updates - Repair vs alteration definitions and procedures - Authorization and responsibility for work - Pressure relieving devices and overpressure protection - Documentation and post-work verification |
| Topic 4: Damage Mechanisms and Corrosion Assessment | 22% | - High-temperature damage and material degradation - Damage assessment and prioritization - Cracking mechanisms (environmental, fatigue, creep) - Internal, external, and localized corrosion - Corrosion under insulation (CUI) and environmental degradation |
| Topic 5: 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. Describe the considerations and procedures for pressure testing insulated pressure vessels under API-510.
2. Under API-510, when is a pressure vessel subject to mandatory stress relieving?
A) After every major repair
B) After any repair
C) After alterations that involve cutting or welding on critical areas
D) When the thickness of the vessel is reduced by 10%
3. Explain the process and benefits of integrating API-510 inspection standards with ISO 9001 quality management systems.
4. 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) 30 ° F above ambient
C) 65 ° F above ambient
D) 10 ° F above MDMT
5. When determining the corrosion rate for a new vessel involved in changes in service conditions and the probable corrosion rate cannot be determined by either available data or experience of the owner/user, on-stream determination shall be made.
What is the length of service recommended by API-510?
A) 100 months
B) 1000 days
C) 1000 hours
D) 1000 weeks
Solutions:
| Question # 1 Answer: Only visible for members | Question # 2 Answer: C | Question # 3 Answer: Only visible for members | Question # 4 Answer: D | Question # 5 Answer: C |
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