Question 1

The signature mark of a fatigue failure is a _______ type fingerprint that has concentric rings.

Options :

A : Eyebrow

B : Half-Moon

C : Radii

D : Clam Shell

Answer: D

Question 2

Phosphoric acid corrosion is usually found in ________ areas.

Options :

A : High velocity

B : Low velocity

C : High temperature

D : Low temperature

Answer: B

Question 3

Soil to Air interface areas are usually more susceptible to corrosion than the rest of the structure because of ___________ and __________ availability.

Options :

A : Moisture

B : Bacteria

C : Oxygen

D : B and C

E : A and C

Answer: A

Question 4

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

Answer: B

Question 5

When caustic stress corrosion cracking is a concern, steam out of _________ carbon steel piping and equipment should be avoided

Options :

A : PWHT

B : Non-PWHT

C : Ferritic

D : Hardened

Answer: B

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