API 510 references API 579-1/ASME FFS-1 for fitness-for-service evaluations. Which level of FFS assessment is the most rigorous and detailed?
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A
Level 1 — screening using conservative tables
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B
Level 2 — more detailed analysis using code-based procedures
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C
Level 3 — detailed analysis often requiring advanced numerical methods or specialist review
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D
Level 4 — reserved for catastrophic damage only