API API-510 : Pressure Vessel Inspector

Exam Code: API-510

Exam Name: Pressure Vessel Inspector

Updated: Oct 06, 2026

Q & A: 175 Questions and Answers

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API API-510 Exam Syllabus Topics:

SectionWeightObjectives
Repairs, Alterations, Rerating, and Mechanical Integrity16%- Rerating, reclassification, and nameplate updates
- Repair vs alteration definitions and procedures
- Pressure relieving devices and overpressure protection
- Authorization and responsibility for work
- Documentation and post-work verification
Damage Mechanisms and Corrosion Assessment22%- Cracking mechanisms (environmental, fatigue, creep)
- High-temperature damage and material degradation
- Internal, external, and localized corrosion
- Corrosion under insulation (CUI) and environmental degradation
- Damage assessment and prioritization
Inspection Scope, Planning, and Data Evaluation28%- Inspection interval determination and extension rules
- Remaining life and corrosion rate calculations
- Code scope, jurisdiction, and regulatory requirements
- Inspection methods and technique selection
- Records review and baseline data collection
- TML/CML selection and measurement planning
Fitness-for-Service, RBI, and Pressure Testing12%- Hydrostatic, pneumatic, and leak testing rules
- Risk-based inspection (RBI) principles and application
- API 579/ASME FFS-1 screening and assessment
- Acceptance criteria and post-test evaluation
Design, Materials, and Fabrication Rules22%- Material selection, properties, and toughness requirements
- Positive material identification (PMI) and traceability
- MAWP, thickness, and joint efficiency calculations
- Welding, qualification, and PWHT requirements
- ASME Section VIII, V, IX application
- Flanges, bolting, gaskets, and special components

API Pressure Vessel Inspector Sample Questions:

Question #1

Discuss how API-510 standards can be adapted to accommodate advancements in material science used in pressure vessel construction.

Reveal Solution  Discussion  0

Correct Answer:

API-510 standards can be adapted to accommodate advancements in material science by incorporating new research and technologies into the codes and guidelines regularly. This adaptation involves collaborating with material scientists and industry experts to evaluate the performance and safety implications of new materials. When a new material offers proven benefits such as enhanced durability or corrosion resistance, API-510 standards are updated to include guidelines for its use, testing requirements, and best practices for inspection. This ensures that the standards remain relevant and provide the necessary guidance to safely incorporate innovative materials into pressure vessel construction.

Question #2

Explain how API-510 addresses the retrofitting and upgrading of aging pressure vessels to meet modern operational demands.

Reveal Solution  Discussion  0

Correct Answer:

API-510 provides comprehensive guidelines for retrofitting and upgrading aging pressure vessels to meet modern operational demands. This includes assessing the current condition of the vessel, determining the feasibility of upgrades or retrofits, and implementing modifications in compliance with current safety standards. The standard outlines procedures for replacing outdated components with modern materials and technology that enhance performance and safety. Thorough testing and re- certification are required after any retrofitting work to ensure that the vessel continues to operate safely under the new conditions.

Question #3

What documentation must be reviewed and updated after any major alteration or repair to a pressure vessel as per API-510?

  • A. All relevant documentation, including design, operation, and maintenance
  • B. The original design documents
  • C. The latest inspection report
  • D. The vessel's operating manual
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #4

Which of the following is not a responsibility of a pressure vessel inspector according to API-510?

  • A. Ensuring compliance with safety standards
  • B. Performing inspections
  • C. Documenting inspection findings
  • D. Designing pressure vessels
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Question #5

Which type of corrosion mechanism is not directly addressed in API-510?

  • A. Galvanic corrosion
  • B. Crevice corrosion
  • C. High-temperature hydrogen attack
  • D. Atmospheric corrosion
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

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