AMPP REFINING CORROSION TECHNOLOGIST (NACE RCT) · PUBLICATION
API 571 in the AMPP Refining Corrosion Technologist (NACE RCT) exam
Damage Mechanisms Affecting Fixed Equipment in the Refining Industry. Our AMPP Refining Corrosion Technologist (NACE RCT) bank draws 106 of its 6,888 questions from this publication — 2% — and they cite 23 different clauses. The clause list below is counted from those questions, not copied from a syllabus.
Clauses the questions cite
All 23, in document order. The number is how many questions in our bank reference that clause.
What they ask about
Free sample question from API 571
How does sigma phase formation rate vary with alloy content, and what secondary problem does it bring?
- A. Rate and amount rise with chromium and molybdenum content, and the material becomes more prone to intergranular corrosion ✓
- B. Rate and amount both fall away as chromium and molybdenum increase, and the material grows more liable to corrosion between its grains
- C. Rate and amount climb with nickel and manganese present, and the material grows more liable to attack between its grains
- D. Rate and amount rise with chromium and molybdenum content, though corrosion resistance is entirely unaffected
- E. Rate turns on time at temperature and nothing else whatever, the composition of the alloy having no bearing upon it at all
The precipitate is a hard, brittle intermetallic compound, and forming it depletes the surrounding matrix, which is what opens the way to intergranular attack. So the same change that embrittles the steel also makes it corrode differently. API 571, 3.56
All free AMPP Refining Corrosion Technologist (NACE RCT) questions
Other publications in this exam
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.