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Free Corrosion and Materials Professional Practice Questions

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Exam style questions across every API-571 domain

Last Update 9 months ago
Total Questions : 149

Start with our free API-571 practice questions, carefully crafted to mirror the domains, phrasing, and difficulty of the real ICP Programs exam. Each API-571 exam question comes with a detailed rationale that explains not just which answer is correct but why the others fall short. That's how concepts stick. Use the free set to benchmark yourself: identify your API weak domains, see where you're losing marks, and build a focused study plan in minutes.

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Question # 11

(The most effective protection of carbon steel pilings from soil-side corrosion is a combination of a:)

Options:

A.  

Corrosion-resistant coating and a cathodic protection system

B.  

Galvanizing and a cathodic protection system

C.  

Corrosion-resistant coating and a clean sand backfill

D.  

Clean sand backfill and a cathodic protection system

Discussion 0
Question # 12

The most effective means of preventing caustic stress corrosion cracking is:

Options:

A.  

Postweld heat treatment

B.  

Upgrading to 300 series stainless steel

C.  

Reducing caustic concentration

D.  

Controlling process temperature during steamouts

Discussion 0
Question # 13

(Amine cracking is most often associated with which services?)

Options:

A.  

Lean amine

B.  

Rich amine

C.  

Amine solutions below 140 °F (60 °C)

D.  

High concentration amines

Discussion 0
Question # 14

Besides corrosion, what other damage mechanism in hydrofluoric (HF) acid service should inspectors be alert to?

Options:

A.  

Hydrogen stress cracking

B.  

Fluoride stress cracking

C.  

Stress corrosion cracking

D.  

Wet HF cracking

Discussion 0
Question # 15

Which of the following generally manifests itself as a subsurface damage mechanism?

Options:

A.  

Sulfide Stress Corrosion Cracking (SCC)

B.  

Amine Stress Corrosion Cracking

C.  

Caustic Cracking

D.  

Stress-Oriented Hydrogen-Induced Cracking (SOHIC)

Discussion 0
Question # 16

(What nondestructive examination (NDE) technique requires the least amount of surface preparation to locate wet H₂S damage mechanisms?)

Options:

A.  

ACFM

B.  

SWUT

C.  

WFMT

D.  

LPT

Discussion 0
Question # 17

The best method for finding damage from sigma phase embrittlement is:

Options:

A.  

Hardness testing

B.  

Ductility testing

C.  

Magnetic particle testing

D.  

Metallographic testing

Discussion 0
Question # 18

(For hydrogen embrittlement, the amount of hydrogen necessary for a measurable effect on the mechanical properties varies with the alloy's strength, microstructure, and:)

Options:

A.  

Modulus of elasticity

B.  

Coefficient of thermal conductivity

C.  

Melting point

D.  

Heat treatment

Discussion 0
Question # 19

An inspector has discovered significant cracking in a T-joint where hot and cold hydrogen-containing streams are mixing in a hydroprocess unit. What damage mechanism should the inspector suspect is the cause?

Options:

A.  

Mixing point corrosion

B.  

Injection point corrosion

C.  

Thermal fatigue

D.  

Hydrogen embrittlement

Discussion 0
Question # 20

(Cooling water corrosion usually increases with decreasing:)

Options:

A.  

Microbiological activity

B.  

Oxygen content

C.  

Process temperatures

D.  

Velocities

Discussion 0

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