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API-571 Online Practice Questions and Answers

Questions 4

In order to minimize and prevent amine SCC, PWHT all carbon steel welds in accordance with API RP _____.

A. 751

B. 912

C. 510

D. 945

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Questions 5

A vacuum tower operating at 740º F is being entered to inspect. Several sets of Type 410 SS trays are bent at various angles. The trays are removed in order to straighten them. When an attempt is made to straighten them cracks form at the bends. What type of damage mechanism would cause the cracks to form?

A. Hydrogen embrittlement

B. Sulfide stress corrosion cracking

C. 885º F embrittlement

D. High temperature corrosion

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Questions 6

Damage due to __________ is not visible and can only be observed by metallographic examination.

A. Galvanic corrosion

B. Brittle fracture

C. Cavitation

D. Graphitization

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Questions 7

Which of the following are affected by sulfidation?

A. Carbon steel

B. 300 Series SS

C. 400 Series SS

D. All of the above

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Questions 8

Titanium Hydriding damage occurs primarily in sour water strippers and amine units in the overhead condensers, heat exchanger tubes and other titanium equipment operating above _________.

A. 300º F

B. 270º F

C. 210º F

D. 165º F

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Questions 9

There is currently no known metal alloy that is immune to _________ under all conditions.

A. Carburization

B. Metal dusting

C. Decarburization

D. None of the above

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Questions 10

Cracking of a metal due to stress relaxation during PWHT or in service at elevated temperatures is called ______. It is most often found in heavy wall sections.

A. Thermal cracking

B. Reheat cracking

C. Step-like cracking

D. None of the above

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Questions 11

_________ is most likely found in hard weld and heat-affected zones and in high strength components.

A. HIC

B. SSC

C. SOHIC

D. Blistering

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Questions 12

Geometry, stress level, _________ and material properties are the predominate factors in determining the fatigue resistance of a component.

A. Temperature

B. Pressure

C. Velocity

D. Number of cycles

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Questions 13

The regenerator reboiler and the regenerator are areas where the temperature and __________ of the amine stream are the highest and can cause significant corrosion problems.

A. Pressure

B. Stress

C. Turbulence

D. Concentration

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Exam Code: API-571
Exam Name: Corrosion and Materials Professional
Last Update: Mar 25, 2024
Questions: 454
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