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Free Access API API-571 New Release

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Total 454 questions

Corrosion and Materials Professional Questions and Answers

Question 13

Stainless steels have higher coefficients of thermal expansion than carbon steel or low alloy steel or nickel based alloys and are more likely to see _________.

Options:

A.

Higher temperatures

B.

Higher stresses

C.

Higher pressure

D.

None of the above

Question 14

Oxygen and iron in the wash water injected into reactor effluent can lead to __________ corrosion and fouling.

Options:

A.

Increased

B.

Decreased

C.

Substantial

D.

Minimal

Question 15

Hydrogen blisters may form as surface bulges on the ID, the OD on within the wall thickness of a pipe or pressure vessel. Blistering occurs from hydrogen generated by ______, not hydrogen gas from the process stream.

Options:

A.

H²S

B.

Corrosion

C.

Hydriding

D.

Sulfur

Question 16

Wet H²S services or _________ acid services are process where hydrogen diffuses into the steel and hydrogen embrittlement (HE) is an issue.

Options:

A.

HF

B.

Sulfuric

C.

Caustic

D.

HCL

Page: 4 / 17
Total 454 questions