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API API-571 Exam Syllabus Topics:
Topic
Details
Topic 1
Topic 2
- Affecting Fixed Equipment
Topic 3
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API-571 Exam topics
Candidates must know the exam topics before they start of preparation. Because it will really help them in hitting the core. Our API-571 exam dumps will include the following topics:
- Identify the various mechanical and metallurgical failure mechanisms such as brittle fracture, steam blanketing, stress rupture, cracking, thermal shock, fatigue and corrosion.
- Possess a general background on the scope, organization and use of API 571 and be able to review the standards and other references related to it.
- Understand refining industry damage mechanisms used in uniform of localized loss in thickness phenomena.
- Explore refining industry damage mechanisms for environment assisted cracking and be able to identify the other types of mechanisms.
API Corrosion and Materials Professional Sample Questions (Q16-Q21):
NEW QUESTION # 16
Typical HF Alkylation units operate with 1% to 3% water in the acid, equivalent to an HF-in-water concentration of 97% to 99% and the temperatures are generally below _________.
- A. 250º F
- B. 150º F
- C. 200º F
- D. 300º F
Answer: B
NEW QUESTION # 17
_________ corrosion rates are found in a gas oil desulfurizers and hydrocrackers than naphtha desulfurizers and hydrocrackers by a factor of almost "2".
- A. Lower
- B. Hydrogen corrosion
- C. Higher
- D. Sulfidation
Answer: C
NEW QUESTION # 18
A 6", A106 Gr B, flanged line carrying caustic wash water at 200º F has signs of atmospheric corrosion.
Which of the following may have help accelerate the corrosion?
- A. None of the above
- B. Sulfides
- C. Caustic
- D. Fly ash
Answer: D
NEW QUESTION # 19
The most effective means of preventing caustic stress corrosion cracking is:
- A. Reducing caustic concentration
- B. Postweld heat treatment
- C. Upgrading to 300 series stainless steel
- D. Controlling process temperature during steamouts
Answer: B
Explanation:
According to API RP 571, under Caustic Stress Corrosion Cracking (Caustic Embrittlement):
"Cracking occurs in stressed components exposed to caustic (e.g., sodium hydroxide)."
"The most effective mitigation strategy is postweld heat treatment (PWHT), which relieves residual stress that promotes cracking."
"Upgrading materials or controlling concentration may help, but do not replace stress relief." (Reference: API RP 571, Section 4.2.2.3 - Caustic SCC) Thus, PWHT is the most effective prevention technique, making option A correct.
NEW QUESTION # 20
Ammonium chloride corrosion is the general or localized corrosion, often pitting, normally occurring under ammonium chloride or amine salt deposits. All commonly used materials are susceptible to ammonium chloride corrosion. A small amount of _________ can lead to very aggressive corrosion.
- A. Salt
- B. Amine
- C. Ammonium chloride
- D. Water
Answer: D
NEW QUESTION # 21
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