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API-571 Exam topics

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Knowledge of general damage mechanisms applicable to the industry and be able to identify their features and functions.
Understand refining industry damage mechanisms used in uniform of localized loss in thickness phenomena.
Identify the various mechanical and metallurgical failure mechanisms such as brittle fracture, steam blanketing, stress rupture, cracking, thermal shock, fatigue and corrosion.

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API API-571 Exam Syllabus Topics:

Topic
Details

Topic 1

Affecting Fixed Equipment

Topic 2

Refining Management

Topic 3

Damage Mechanisms

API Corrosion and Materials Professional Sample Questions (Q17-Q22):

NEW QUESTION # 17
Carbonate cracking typically propagates _________ to the weld; the pattern of cracking observed on the surface is sometimes described as ________.

A. Diagonal, Half moon
B. Transverse, Eyebrow
C. Parallel, Spider web
D. Perpendicular, Stair step

Answer: C

NEW QUESTION # 18
Corrosion under insulation becomes more severe at metal temperatures between ________ and ________, where water is less likely to vaporize and insulation stays wet longer.

A. 100(o) C, 121(o) C
B. None of the above
C. 92(o) C, 116(o) C
D. 114(o) C, 132(o) C

Answer: A

NEW QUESTION # 19
The presence of ________ in H(2)S streams increases the severity of high temperature sulfide corrosion at temperatures above about 500(o) F

A. Hydrogen
B. Amine
C. Sulfides
D. All of the above

Answer: A

NEW QUESTION # 20
Cracks formed by carbonate stress corrosion are best detected:

A. with a penetrant testing technique used after abrasive or high pressure water blasting of the surface.
B. ultrasonic shear wave examination because cracks develop internally.
C. with an Acoustic Emission Testing technique.
D. with a wet fluorescent magnetic-particle testing technique.

Answer: D

Explanation:
According to API RP 571 Section 5.1.2.6 (Carbonate Stress Corrosion Cracking - CSCC):
"The cracking is usually intergranular and is most commonly detected using wet fluorescent magnetic-particle testing (WFMT) after surface cleaning. PT may not be sensitive enough to detect fine cracks formed by this mechanism." Because CSCC cracks are typically surface-connected and very fine, WFMT offers the best visibility, especially after proper surface prep.
Therefore, Option D is correct.

NEW QUESTION # 21
Sulfidation of iron-based alloys usually begins at about:

A. 500 oF.
B. 250 oF.
C. 150 oF.
D. 1100 oF.

Answer: A

NEW QUESTION # 22
......

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