Exam Name: Pressure Vessel Inspector
Certification Provider: API
Corresponding Certification: Individual Certification Programs
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Check Updated on: Oct 20, 2026
No. of Questions: 175 Questions & Answers with Exam Engine
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API API-510 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Design, Materials, and Fabrication Rules | 22% | - Material selection, properties, and toughness requirements - Welding, qualification, and PWHT requirements - Flanges, bolting, gaskets, and special components - ASME Section VIII, V, IX application - Positive material identification (PMI) and traceability - MAWP, thickness, and joint efficiency calculations |
| Repairs, Alterations, Rerating, and Mechanical Integrity | 16% | - Rerating, reclassification, and nameplate updates - Pressure relieving devices and overpressure protection - Authorization and responsibility for work - Documentation and post-work verification - Repair vs alteration definitions and procedures |
| Damage Mechanisms and Corrosion Assessment | 22% | - Internal, external, and localized corrosion - Damage assessment and prioritization - Corrosion under insulation (CUI) and environmental degradation - Cracking mechanisms (environmental, fatigue, creep) - High-temperature damage and material degradation |
| Inspection Scope, Planning, and Data Evaluation | 28% | - Remaining life and corrosion rate calculations - TML/CML selection and measurement planning - Code scope, jurisdiction, and regulatory requirements - Records review and baseline data collection - Inspection interval determination and extension rules - Inspection methods and technique selection |
| Fitness-for-Service, RBI, and Pressure Testing | 12% | - Acceptance criteria and post-test evaluation - Hydrostatic, pneumatic, and leak testing rules - API 579/ASME FFS-1 screening and assessment - Risk-based inspection (RBI) principles and application |
API-510 Exam Basics, Support Speed and Discount Programs
- Damage Mechanisms and Corrosion Assessment (22%)
- Design, Materials, and Fabrication Rules (22%)
- Fitness-for-Service, RBI, and Pressure Testing (12%)
API Pressure Vessel Inspector Sample Questions:
Explain the protocol for updating API-510 standards and how industry feedback is incorporated into revisions.
Reveal Solution Discussion 0Correct Answer:
The protocol for updating API-510 standards involves a regular review cycle where the existing guidelines are evaluated for effectiveness and relevance. Industry feedback plays a crucial role in this process, as professionals from various sectors contribute their insights and experiences. Technical committees comprising experts in the field review all feedback and propose revisions based on emerging trends, technological advancements, and regulatory changes. Public comment periods are also held to ensure that all stakeholders have the opportunity to contribute to the discussion before finalizing any updates.
According to API-510, which of the following is not a typical method for detecting under-insulation corrosion?
- A. Ultrasonic testing
- B. Radiographic testing
- C. Visual inspection
- D. Thermal imaging
Correct Answer: B 🗳️
Discuss the role of API-510 in ensuring environmental compliance for pressure vessels.
Reveal Solution Discussion 0Correct Answer:
API-510 plays a significant role in ensuring environmental compliance for pressure vessels by setting standards that minimize the risk of leaks and emissions, which can have detrimental effects on the environment. The standard requires regular inspections and maintenance to ensure the integrity of the vessels, thereby preventing accidental releases of hazardous substances. API-510 also promotes the use of environmentally friendly materials and technologies in the construction and repair of pressure vessels.
The re-rating of a pressure vessel will be considered complete only when the authorized pressure vessel inspector witnesses which of the following?
- A. The pressure test required by the code
- B. The final painting of the vessel
- C. The stamping of welds by each welder
- D. The attachment of an additional nameplate of stamping
Correct Answer: D 🗳️
What action is required under API-510 if a pressure vessel's corrosion rate exceeds expected values?
- A. No specific action required
- B. Notification of the API
- C. Recalculation of the vessel's remaining life
- D. Immediate shutdown
Correct Answer: C 🗳️
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