New API-571 Exam Learning Free PDF | Professional API-571 Vce Download: Corrosion and Materials Professional

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The API API-571 certification topics or syllabus are updated with the passage of time. To pass the API Corrosion and Materials Professional exam you have to know these topics. The VCEDumps API-571 certification exam trainers always work on these topics and add their appropriate API API-571 Exam Questions And Answers in the API-571 exam dumps. These latest API Corrosion and Materials Professional exam topics are added in all API Corrosion and Materials Professional exam questions formats.

API Corrosion and Materials Professional Sample Questions (Q46-Q51):

NEW QUESTION # 46
_________ is accelerated high temperature wastage of materials that occurs when contaminants in the fuel form deposits and melt on the metal surfaces.

A. Spheroidization
B. Fuel ash corrosion
C. None of the above
D. Dealloying

Answer: B

NEW QUESTION # 47
The remaining life of a component susceptible to creep damage can be cut in half by a/an:

A. increase in operating unit throughput.
B. increase in stress of 10%.
C. sudden change in temperature.
D. increase in temperature of 25°F (15°C).

Answer: D

Explanation:
According to API RP 571 Section 5.3.2.1 (Creep):
"Creep damage is exponentially dependent on temperature. A small increase in temperature (e.g., 25°F or 15° C) can reduce remaining life by more than half. This is because the creep rate increases rapidly with temperature, especially above design limits." Stress is a contributing factor, but the dominant and most sensitive variable is temperature.
Thus, Option C (increase in temperature of 25°F/15°C) is the correct answer.

NEW QUESTION # 48
During inspection of a process unit where sulfidation from high-temperature hydrogen exists in H#S streams, the inspector should:

A. Use penetrant testing and magnetic-particle testing to look for surface-breaking cracks
B. Use ultrasonic testing or radiographic testing thickness readings to monitor for loss of wall thickness
C. Use angle beam ultrasonic testing to look for cracking at the mid-wall
D. Take boat samples and send them to the lab for metallographic analysis

Answer: B

Explanation:
API RP 571 under Sulfidation (High Temperature Sulfidic Corrosion) recommends:
"Thickness monitoring using ultrasonic testing (UT) or radiographic testing (RT) is the most common method for detection of wall loss due to sulfidation."
"Sulfidation results in uniform thinning, especially in low Cr steels in hydrogen/H#S environments." (Reference: API RP 571, Section 4.2.1.1 - Sulfidation) Thus, option A is the most appropriate and effective inspection method.

NEW QUESTION # 49
_________ is a selective corrosion mechanism in which one or more constituents of an alloy are preferentially attacked leaving a lower density often porous structure.

A. Phenol corrosion
B. Dealloying
C. Carburization
D. Preferentially weld attack

Answer: B

NEW QUESTION # 50
With hydrofluoric acid corrosion, corrosion rates increase with _______ temperatures and ______ HF concentrations.

A. Increasing, increasing
B. Decreasing, increasing
C. Decreasing, decreasing
D. Increasing, decreasing

Answer: D

NEW QUESTION # 51
......

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New API-571 Exam Learning Free PDF | Professional API-571 Vce Download: Corrosion and Materials Professional

Difficulty in writing API-571 Exam

Pass Guaranteed 2025 Unparalleled API API-571: Corrosion and Materials Professional Exam Learning

API Corrosion and Materials Professional Sample Questions (Q46-Q51):

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