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API 570 PIPING INSPECTOR · PUBLICATION

API 571 in the API 570 Piping Inspector exam

Damage Mechanisms Affecting Fixed Equipment in the Refining Industry. Our API 570 Piping Inspector bank draws 455 of its 5,261 questions from this publication — 9% — and they cite 49 different clauses. The clause list below is counted from those questions, not copied from a syllabus.

Clauses the questions cite

The 40 most cited of 49, in document order. The number is how many questions in our bank reference that clause.

3.3 · 43.8 · 73.9 · 43.11 · 33.14 · 93.15 · 43.15.1 · 13.15.2 · 13.15.3 · 13.15.4 · 13.15.5 · 13.15.6 · 23.15.7 · 13.15.8 · 13.17 · 143.17.2 · 13.17.3 · 33.20.3 · 13.20.4 · 13.20.6 · 13.22 · 93.27 · 113.31 · 73.35 · 13.36.1 · 13.36.2 · 13.36.4 · 13.36.5 · 23.36.6 · 23.36.7 · 23.37 · 43.43 · 83.45 · 93.57 · 83.58 · 43.61 · 173.61.2 · 13.67 · 13.67.1 · 13.67.2 · 1

What they ask about

Damage mechanisms 80Sulfidation 11CUI 10Damage mechanism thresholds 10Damage mechanism mitigation 10Thermal Fatigue 7Atmospheric corrosion 6Mechanical fatigue 5Cl-SCC 5Wet H2S Damage 5Prevention 5Brittle fracture 4Erosion 4Chloride Stress Corrosion Cracking 4Caustic SCC 4Fatigue 4Brittle Fracture 3Erosion‑corrosion 3Boiler water corrosion 3Corrosion 3

Free sample questions from API 571

  1. Which material has the least resistance to HTHA?

    • A. 300 SS
    • B. 400 SS
    • C. 9Cr-1Mo steel
    • D. Carbon steel ✓
    • E. None of the above

    Carbon steel has the lowest resistance to HTHA, while Cr-Mo steels provide improved resistance and stainless steels are generally not susceptible. API 571, Section 3.36.2

  2. HTHA cracking or fissuring in carbon steels is typically:

    • A. Surface oriented
    • B. Subsurface
    • C. Intergranular ✓
    • D. Laminations
    • E. None of the above

    HTHA damage produces intergranular fissures and cracking associated with decarburized grain boundaries. API 571, Section 3.36.5

All free API 570 Piping Inspector questions

Other publications in this exam

API 574 · 753API 577 · 738ASME IX · 458ASME V · 383ASME BPVC Section IX · 160API 578 · 135
API 570 Piping Inspector exam guide5,261 API 570 Piping Inspector questions

Counts are from AssetronX’s own question bank and describe what we have written, not what the exam contains. AssetronX is an independent examination-preparation provider and is not affiliated with, endorsed by or accredited by any certifying body or standards organisation. The clause numbers refer to the publications’ own paragraphs; the publications themselves are not reproduced here.