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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Repairs, Alterations, Rerating, and Mechanical Integrity | 16% | - Repair vs alteration definitions and procedures - Pressure relieving devices and overpressure protection - Authorization and responsibility for work - Documentation and post-work verification - Rerating, reclassification, and nameplate updates |
| Topic 2: Fitness-for-Service, RBI, and Pressure Testing | 12% | - Hydrostatic, pneumatic, and leak testing rules - Acceptance criteria and post-test evaluation - Risk-based inspection (RBI) principles and application - API 579/ASME FFS-1 screening and assessment |
| Topic 3: Design, Materials, and Fabrication Rules | 22% | - Positive material identification (PMI) and traceability - Material selection, properties, and toughness requirements - MAWP, thickness, and joint efficiency calculations - ASME Section VIII, V, IX application - Welding, qualification, and PWHT requirements - Flanges, bolting, gaskets, and special components |
| Topic 4: Damage Mechanisms and Corrosion Assessment | 22% | - Internal, external, and localized corrosion - High-temperature damage and material degradation - Damage assessment and prioritization - Cracking mechanisms (environmental, fatigue, creep) - Corrosion under insulation (CUI) and environmental degradation |
| Topic 5: Inspection Scope, Planning, and Data Evaluation | 28% | - Inspection methods and technique selection - Code scope, jurisdiction, and regulatory requirements - Remaining life and corrosion rate calculations - TML/CML selection and measurement planning - Records review and baseline data collection - Inspection interval determination and extension rules |
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NEW QUESTION # 125
Discuss how API-510 addresses the issue of high-temperature hydrogen attack (HTHA) in pressure vessels.
Answer:
Explanation:
API-510 addresses the issue of high-temperature hydrogen attack (HTHA) by recommending specific materials and construction practices that are resistant to hydrogen embrittlement. The standard advises on the appropriate selection of steels with high resistance to hydrogen-induced cracking and specifies operating limits to minimize the risk of HTHA. Regular inspections are mandated to check for signs of HTHA, using advanced non-destructive testing techniques capable of detecting early stages of hydrogen damage. Additionally, API-510 provides guidelines for modifying operational practices to reduce hydrogen exposure and mitigate the risk of attack.
NEW QUESTION # 126
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?
Answer: A
NEW QUESTION # 127
When a vessel is to be entered for an internal inspection which of the following precautions should be observed?
Answer: B
NEW QUESTION # 128
Flush (insert) patches shall be installed with full penetration butt joints and the corners shall be what type?
Answer: A
NEW QUESTION # 129
What action is required under API-510 if a pressure vessel's corrosion rate exceeds expected values?
Answer: D
NEW QUESTION # 130
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