Exam Name: Pressure Vessel Inspector
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API API-510 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Damage Mechanisms and Corrosion Assessment | 22% | - Corrosion under insulation (CUI) and environmental degradation - Internal, external, and localized corrosion - Cracking mechanisms (environmental, fatigue, creep) - High-temperature damage and material degradation - Damage assessment and prioritization |
| Inspection Scope, Planning, and Data Evaluation | 28% | - Remaining life and corrosion rate calculations - Code scope, jurisdiction, and regulatory requirements - TML/CML selection and measurement planning - Inspection methods and technique selection - Records review and baseline data collection - Inspection interval determination and extension rules |
| Fitness-for-Service, RBI, and Pressure Testing | 12% | - API 579/ASME FFS-1 screening and assessment - Risk-based inspection (RBI) principles and application - Hydrostatic, pneumatic, and leak testing rules - Acceptance criteria and post-test evaluation |
| Repairs, Alterations, Rerating, and Mechanical Integrity | 16% | - Pressure relieving devices and overpressure protection - Authorization and responsibility for work - Documentation and post-work verification - Repair vs alteration definitions and procedures - Rerating, reclassification, and nameplate updates |
| Design, Materials, and Fabrication Rules | 22% | - Positive material identification (PMI) and traceability - Material selection, properties, and toughness requirements - MAWP, thickness, and joint efficiency calculations - Flanges, bolting, gaskets, and special components - Welding, qualification, and PWHT requirements - ASME Section VIII, V, IX application |
API Pressure Vessel Inspector Sample Questions:
The internal inspection interval must be reviewed whenever changes occur that could affect the degradation of the vessel.
In which of the following situations does a review of the internal interval need not be conducted?
- A. fluid composition changes
- B. operating pressure decreases
- C. operating pressure increases
- D. operating temperature increases
Correct Answer: B 🗳️
Before non-destructive procedures are used in lieu of hydrostatic testing, what must be done?
- A. An engineer experienced in pressure vessel design and the API inspector must be consulted
- B. The API inspector and NBIC inspector must be consulted
- C. The API inspector must be consulted
- D. An experienced engineer must be consulted
Correct Answer: A 🗳️
What is the API-510 required minimum thickness for ultrasonic testing on a pressure vessel's shell?
- A. 0.1 inches
- B. 0.05 inches
- C. 0.375 inches
- D. 0.25 inches
Correct Answer: D 🗳️
Explain the API-510 provisions regarding the frequency and extent of inspections required after a pressure vessel has been altered or repaired.
Reveal Solution Discussion 0Correct Answer:
API-510 requires that pressure vessels undergo rigorous inspections following any repairs or alterations to ensure the integrity of the vessel is maintained. The standard stipulates that these vessels should be inspected immediately after the work is completed and before they are returned to service.
The type of inspection can vary but typically includes non-destructive testing (NDT) to verify the quality of the repair or alteration and to confirm that no additional damage was introduced during the process.
After an alteration to a pressure vessel, in lieu of a hydrostatic test, special inspection procedures will be carried out.
What must be done prior to carrying out the special inspection procedures?
- A. Check with the NBIC Authorized inspector
- B. Consult with the chief inspector of the jurisdiction
- C. Review all NDE procedures prior to commencement of the NDE used to waive the hydrostatic test requirement
- D. Make certain it is permitted by any jurisdictional rules that may exist and consult with an engineer experienced in pressure vessel design and the Authorized Pressure Vessel Inspector
Correct Answer: D 🗳️
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