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API Corrosion and Materials API-571 Exam

API Corrosion and Materials API-571 Exam is related to Advanced Corrosion & Materials Professional Certifications. This exam validates the knowledge and skills of corrosion engineers, corrosion processes among specialized inspectors, chemical engineers and other professionals across the entire petrochemical industry. Highly Specialized Inspectors, Corrosion Engineers and Chemical Engineers usually hold or pursue this certification and you can expect the same job role after completion of this certification.

Certification Path

The API Corrosion and Materials certification path includes only one API-571 Certification Exam.

API Corrosion and Materials Professional Sample Questions (Q14-Q19):

NEW QUESTION # 14
Amine stress corrosion cracking is a term applied to the cracking of steels under the combined actions of ________ and __________ in aqueous alkanolamine systems used to remove/absorb H(2)S and/or CO(2) and their mixtures from various gas and liquid hydrocarbon streams.

A. Temperature, corrosion
B. Tensile stress, corrosion
C. Temperature, pressure
D. Pressure, stress

Answer: B

NEW QUESTION # 15
Corrosion rates associated with hydrofluoric (HF) acid would be expected to increase if:

A. HF acid concentration increases
B. Temperatures are below 150°F (66°C) and there is less than 3% water
C. Temperature and water content increase
D. Copper-nickel alloy is used

Answer: C

Explanation:
According to API RP 571 and API RP 751 (HF Alkylation Units):
"HF acid corrosion rates increase with elevated temperature and higher water content. This is because water acts as an ionizing agent that facilitates the acid's attack on steel."
"Corrosion is minimized when water content is strictly controlled, usually between 0.5-1.5%."
"Contrary to some assumptions, increasing HF acid concentration actually decreases corrosivity." Hence, option B is correct.

NEW QUESTION # 16
What is the chemical symbol for butane of butylenes?

A. C(2)
B. CH4
C. C3
D. C4

Answer: D

NEW QUESTION # 17
With sulfuric acid corrosion, mix points with _______ cause heat to be released and high
corrosion rates can occur where the acid becomes diluted.

A. H(2)S
B. Water
C. Hydrogen
D. Caustic

Answer: B

NEW QUESTION # 18
Carbon steel is susceptible to SCC when used in ___________ service.

A. High pressure
B. High temperature
C. Ammonia
D. Hydrogen

Answer: C

NEW QUESTION # 19
......

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