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API API-510 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Inspection Scope, Planning, and Data Evaluation | 28% | - Inspection interval determination and extension rules - TML/CML selection and measurement planning - Remaining life and corrosion rate calculations - Inspection methods and technique selection - Records review and baseline data collection - Code scope, jurisdiction, and regulatory requirements |
| Design, Materials, and Fabrication Rules | 22% | - Welding, qualification, and PWHT requirements - ASME Section VIII, V, IX application - Flanges, bolting, gaskets, and special components - Positive material identification (PMI) and traceability - MAWP, thickness, and joint efficiency calculations - Material selection, properties, and toughness requirements |
| 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% | - 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 |
| Damage Mechanisms and Corrosion Assessment | 22% | - Damage assessment and prioritization - Corrosion under insulation (CUI) and environmental degradation - High-temperature damage and material degradation - Cracking mechanisms (environmental, fatigue, creep) - Internal, external, and localized corrosion |
API Pressure Vessel Inspector Sample Questions:
To exempt a vessel from internal inspections, what is the value of the corrosion rate that cannot be exceeded?
- A. 0.001" between inspections not to exceed 5 years between inspections
- B. 0.001" per year
- C. 0.005" between inspections not to exceed 3 years between inspections
- D. 0.005" per year
Correct Answer: D 🗳️
How does API-510 address the challenges of corrosion under insulation (CUI) for pressure vessels?
Reveal Solution Discussion 0Correct Answer:
API-510 addresses the challenges of corrosion under insulation (CUI) by recommending specific inspection and maintenance strategies. This includes guidelines for the periodic removal of insulation for visual inspection and testing, use of appropriate materials that resist moisture accumulation, and the application of coatings that inhibit corrosion. Additionally, API-510 advises on the use of advanced non-destructive testing techniques, such as real-time radiography or ultrasonic testing, to detect signs of corrosion without removing insulation, thus reducing inspection costs and downtime.
Discuss the ethical responsibilities of pressure vessel inspectors under API-510.
Reveal Solution Discussion 0Correct Answer:
The ethical responsibilities of pressure vessel inspectors under API-510 include maintaining integrity, objectivity, and impartiality in their inspection practices. Inspectors are expected to perform their duties based on sound technical knowledge and adhere to the highest standards of safety and compliance. They must avoid any conflicts of interest and ensure that their decisions and recommendations are based solely on their professional assessment of the vessel's condition.
Additionally, inspectors are obligated to report any safety concerns or compliance issues they discover during their inspections, regardless of potential implications for operations or management.
As per API 510, what is the maximum allowed time between the testing of pressure relieving devices?
- A. 5 years
- B. 10 years
- C. Pressure relief valves shall be tested at intervals that are frequent enough to verify that the valves perform reliably
- D. Pressure relief devices must be tested at every shutdown
Correct Answer: B 🗳️
What is the API-510 recommendation for frequency of internal inspections for vessels containing corrosive substances?
- A. At least once every 10 years
- B. At least once every 3 years
- C. Depends on the results of the last inspection
- D. At least once every 5 years
Correct Answer: D 🗳️
