Free API API-571 Exam Dumps Questions & Answers

If thermal shock damage may be present, which of the following should be checked?

• A.  Hot/cold injection points
• B.  Bulging at elbows
• C.  Surface exfoliation of furnace tubes
• D.  Hardness of the furnace outlet piping

The rate of spheroidization is affected by:

• A.  type of steel and H# partial pressure.
• B.  exposure time and stress.
• C.  temperature and microstructure.
• D.  temperature and pressure.

Which of the materials listed are not susceptible to Chloride Stress Corrosion Cracking?

• A.  400 Series Stainless Steel
• B.  8% Nickel Alloys
• C.  300 Series Stainless Steel
• D.  Duplex Stainless Steel

Which of the following is the best description of the surface appearance of metals with chloride stress corrosion cracking?

• A.  Linear cracking with few branches extending away from welds
• B.  Concentric ring "beach mark" cracking
• C.  Highly branched crazed cracking
• D.  Linear cracking along weld heat-affected zones

(Graphitization occurs in:)

• A.  Monel
• B.  Carbon steel
• C.  Aluminum
• D.  Stainless steel