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API
Corrosion and Materials certification
API-571 Free Questions
API API-571 Quiz:1 Topic:1 Questions:1-5

Home
API
Corrosion and Materials certification
API-571 Free Questions
API API-571 Quiz:1 Topic:1 Questions:1-5

API API-571 Quiz:1 Topic:1 Questions:1-5

Free Practice Mock Questions Set 1-5 (Quiz # 1) for API-571 Exam, according to official API Corrosion and Materials exam syllabus topic # 1

Question: 1

Thermal fatigue cracks usually propagate _______ to the stress and they are usually dagger-shaped.

AParallel

BDiagonal

CTransverse

DAcross

Answer : C

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Question: 2

SCC usually occurs at pH values above two (2). SCC tendency __________ toward the alkaline pH region

AIncreases

BDecreases

CStabilizes

DNone of the above

Answer : B

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Question: 3

_________ corrosion rates are found in a gas oil desulfurizers and hydrocrackers than naphtha desulfurizers and hydrocrackers by a factor of almost ''2''.

ALower

BHigher

CSulfidization

DHydrogen corrosion

Answer : B

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Question: 4

The ''L'' grade of stainless steels will sensitize if exposed more than several hours above _______ or long term above _____.

A1200 F, 800 F

B1000, 600 F

C1000 F, 750 F

D1100 F, 800 F

Answer : C

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Question: 5

A 6'', A106 Gr B, flanged line carrying caustic wash water at 200 F has signs of atmospheric corrosion. Which of the following may have help accelerate the corrosion?

ASulfides

BFly ash

CCaustic

DNone of the above

Answer : B

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