API-571 Exam Practice Test Instant Access

Question 1

Protection in a boiler from boiler feed water corrosion is accomplished by:

AInjecting chlorines to kill microbiological bugs.

BInjecting caustic to lower the ph to < 4.0.

CLowering solids content in boiler feed water to less than 50 ppm.

DMaintaining a protective corrosion layer of magnetite (Fe3O4).

Answer : D

Question 2

Which of the following is not a critical factor that contributes to a brittle fracture?

AThe material's fracture toughness

BMaximum operating temperature

CStress concentration at a flaw

DMagnitude of the residual stresses

Answer : B

Question 3

What test is used to determine a material's toughness?

ACharpy impact test

BGuided bend test

CMetallography

DTension test

EPhysical fitness test

Answer : A

Question 4

ASME Section VIII had few limitations concerning brittle fracture prior to:

A1955.

B1962.

C1973.

D1987.

Answer : D

Question 5

Which of the following materials is least affected by brittle fracture?

ACarbon steel

BChromes

C300 series stainless steel

D400 series stainless steel

EAll stainless steels

Answer : C

Question 6

Corrosion under insulation is more severe between ________ and ____________.

A175 F, 212 F

B212 F, 250 F

C250 F, 300 F

D25 F, 250 F

Answer : B

Question 7

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

API-571 Corrosion and Materials Exam Practice Test