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 |
|---|---|---|
| Fitness-for-Service, RBI, and Pressure Testing | 12% | - Acceptance criteria and post-test evaluation - API 579/ASME FFS-1 screening and assessment - Risk-based inspection (RBI) principles and application - Hydrostatic, pneumatic, and leak testing rules |
| Damage Mechanisms and Corrosion Assessment | 22% | - Cracking mechanisms (environmental, fatigue, creep) - High-temperature damage and material degradation - Damage assessment and prioritization - Internal, external, and localized corrosion - Corrosion under insulation (CUI) and environmental degradation |
| Repairs, Alterations, Rerating, and Mechanical Integrity | 16% | - Authorization and responsibility for work - Pressure relieving devices and overpressure protection - Repair vs alteration definitions and procedures - Rerating, reclassification, and nameplate updates - Documentation and post-work verification |
| Design, Materials, and Fabrication Rules | 22% | - Welding, qualification, and PWHT requirements - Material selection, properties, and toughness requirements - MAWP, thickness, and joint efficiency calculations - Flanges, bolting, gaskets, and special components - Positive material identification (PMI) and traceability - ASME Section VIII, V, IX application |
| Inspection Scope, Planning, and Data Evaluation | 28% | - Inspection interval determination and extension rules - Code scope, jurisdiction, and regulatory requirements - Records review and baseline data collection - Inspection methods and technique selection - Remaining life and corrosion rate calculations - TML/CML selection and measurement planning |
API Pressure Vessel Inspector Sample Questions:
What is the minimum temperature of the metal during a pressure test of a 2.125" thick vessel?
- A. Minimum temperature shall be at least 20˚F above the minimum design metal temperature
- B. Minimum temperature shall be at least 30˚F above the minimum design metal temperature
- C. Minimum temperature shall be ambient temperature but not less than 55°F
- D. Minimum temperature shall be 60°F
Correct Answer: B 🗳️
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. 65 ° F above ambient
- C. 10 ° F above MDMT
- D. 30 ° F above ambient
Correct Answer: C 🗳️
Aboveground vessels shall be inspected, preferably while in operation, at least every ___________ years or at the same interval as the required internal/on-stream inspection
- A. 20 years
- B. 10 years
- C. 15 years
- D. 5 years
Correct Answer: D 🗳️
Which type of corrosion mechanism is not directly addressed in API-510?
- A. Atmospheric corrosion
- B. Galvanic corrosion
- C. Crevice corrosion
- D. High-temperature hydrogen attack
Correct Answer: A 🗳️
Describe the process and importance of obtaining third-party verification of pressure vessel inspections under API-510.
Reveal Solution Discussion 0Correct Answer:
Obtaining third-party verification of pressure vessel inspections under API-510 is crucial for ensuring the impartiality and accuracy of the inspection process. This involves engaging independent auditors or certification bodies to review and verify the results of inspections conducted by in-house or contracted inspectors. The third-party reviewers assess the thoroughness of the inspection, the adherence to API-510 standards, and the accuracy of the documentation. This process helps to maintain high standards of safety and compliance and provides an additional layer of assurance that pressure vessels are fit for continued service.
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