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API API-510 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Design, Materials, and Fabrication Rules | 22% | - ASME Section VIII, V, IX application - MAWP, thickness, and joint efficiency calculations - Positive material identification (PMI) and traceability - Material selection, properties, and toughness requirements - Welding, qualification, and PWHT requirements - Flanges, bolting, gaskets, and special components |
| Topic 2: 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 |
| Topic 3: Fitness-for-Service, RBI, and Pressure Testing | 12% | - Acceptance criteria and post-test evaluation - API 579/ASME FFS-1 screening and assessment - Hydrostatic, pneumatic, and leak testing rules - Risk-based inspection (RBI) principles and application |
| Topic 4: Inspection Scope, Planning, and Data Evaluation | 28% | - TML/CML selection and measurement planning - Code scope, jurisdiction, and regulatory requirements - Inspection methods and technique selection - Inspection interval determination and extension rules - Records review and baseline data collection - Remaining life and corrosion rate calculations |
| Topic 5: Repairs, Alterations, Rerating, and Mechanical Integrity | 16% | - Rerating, reclassification, and nameplate updates - Pressure relieving devices and overpressure protection - Repair vs alteration definitions and procedures - Authorization and responsibility for work - Documentation and post-work verification |
API Pressure Vessel Inspector Sample Questions:
Which of the following is not a part of the essential variables in a Welding Procedure Specification (WPS) as per API-510?
- A. Welding process
- B. Color of the base metal
- C. Post-weld heat treatment
- D. Base metal type
Correct Answer: B 🗳️
What is the standard interval for external inspections under API-510 for vessels in severe service conditions?
- A. 10 years
- B. 1 year
- C. 3 years
- D. 5 years
Correct Answer: B 🗳️
Describe the considerations and procedures for pressure testing insulated pressure vessels under API-510.
Reveal Solution Discussion 0Correct Answer:
Pressure testing insulated pressure vessels under API-510 involves several considerations to ensure that the insulation does not conceal leaks or damage. Before testing, inspectors typically require that sections of insulation be removed to expose the vessel surface, particularly in areas prone to corrosion or wear. The testing itself, whether hydrostatic or pneumatic, must be conducted at pressures specified by API-510 to simulate operational conditions accurately. After testing, the insulation must be carefully replaced and inspected to ensure that it maintains its protective properties. Documentation of the entire process is crucial for future inspections and maintenance records.
Inspection for corrosion under insulation (CUI) shall be considered for externally insulated vessels subject to moisture ingress and that operate between which of the following temperature range?
- A. 10°F and 350°F for carbon and low alloy steels
- B. 175°F and 350°F for austenitic stainless steels
- C. 20°F and 350°F for carbon and low alloy steels
- D. 275°F and 450°F for austenitic stainless steels
Correct Answer: A 🗳️
What can be done to extend the life of a vessel with a corroded area in the shell plate 6 inches from the weld, a joint efficiency of less than 1, and a corrosion thickness currently near the minimum required thickness?
- A. Recalculate t minimum for design conditions using E = 1.
- B. Recalculate t minimum for current operating conditions using E < 1.
- C. Monitor the thickness during the run.
- D. Recalculate t minimum for current operating conditions using E = 1.
Correct Answer: A 🗳️
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