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 |
|---|---|---|
| Inspection Scope, Planning, and Data Evaluation | 28% | - TML/CML selection and measurement planning - Remaining life and corrosion rate calculations - Inspection interval determination and extension rules - Inspection methods and technique selection - Records review and baseline data collection - Code scope, jurisdiction, and regulatory requirements |
| Design, Materials, and Fabrication Rules | 22% | - Flanges, bolting, gaskets, and special components - Welding, qualification, and PWHT requirements - Positive material identification (PMI) and traceability - ASME Section VIII, V, IX application - Material selection, properties, and toughness requirements - MAWP, thickness, and joint efficiency calculations |
| Damage Mechanisms and Corrosion Assessment | 22% | - Corrosion under insulation (CUI) and environmental degradation - Cracking mechanisms (environmental, fatigue, creep) - Damage assessment and prioritization - Internal, external, and localized corrosion - High-temperature damage and material degradation |
| Repairs, Alterations, Rerating, and Mechanical Integrity | 16% | - Authorization and responsibility for work - Repair vs alteration definitions and procedures - Pressure relieving devices and overpressure protection - Rerating, reclassification, and nameplate updates - Documentation and post-work verification |
| Fitness-for-Service, RBI, and Pressure Testing | 12% | - 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 |
API Pressure Vessel Inspector Sample Questions:
During a vessel alteration, if there is a conflict between the requirements of API 510 and the construction code, which should be followed?
- A. API 510
- B. the code with the most stringent requirements
- C. the construction code
- D. either the API 510 or the construction code based on inspector's recommendation
Correct Answer: A 🗳️
A corroded area in a carbon steel vessel is being repaired by using weld overlay (weld build-up).
The vessel surface should be examined by:
- A. MT or PT before welding
- B. MT or PT after welding
- C. MT or PT before and after welding
- D. MT or PT after welding, and UT flaw detection after 24 hours
Correct Answer: C 🗳️
What is the maximum inspection interval for a vessel with a remaining safe operating life of less than four years?
- A. The full remaining safe operating life up to a maximum of 1 year
- B. The full remaining safe operating life up to a maximum of 2 years
- C. The full remaining life of the vessel
- D. The full remaining safe operating life up to a maximum of 4 years
Correct Answer: B 🗳️
Explain the critical safety considerations that API-510 mandates for pressure vessels operating in hazardous environments.
Reveal Solution Discussion 0Correct Answer:
API-510 mandates several safety considerations for pressure vessels in hazardous environments, such as using materials and construction methods that are suitable for the specific conditions (e.g., corrosion-resistant materials), installing adequate safety relief systems, and ensuring that the vessel design accommodates possible fluctuations in pressure and temperature. Regular and thorough inspections are required to detect any potential degradation early.
Flush (insert) patches shall be installed with full penetration butt joints and the corners shall be what type?
- A. The corners shall be rounded 1 inch minimum radius
- B. The corners shall be provided with a 3 inch radius
- C. The corners shall be squared
- D. The corners shall be provided with a 6 inch radius
Correct Answer: A 🗳️
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