API 571 PRACTICE EXAMS QUESTIONS & ANSWERS
Three of the steels listed below are susceptible to brittle fracture. Pick the one that is
not.
a. Carbon steel.
b. 300 series of stainless steels.
c. Low alloy steel.
d. 400 series of stainless steels - Answer -300 series of stainless steels.
What year did the ASME boiler and Pressure Vessel Code, Section VIII, Division 1
begin to require thoughness as a criteria for vessels operating at cold temperatures?
a. 1987
b. 1942
c. 1995
d.1963 - Answer -1987
Thermal fatigue cracking has been a major problem in:
a. depropanizer vessels
b. coke drum shells
c. boiler feed water tanks
d. catalyst storage drums - Answer -coke drum shells
Since cracking is usually surface connected, effective methods of inspection are:
a. WFMT and LT.
b. ET, and AE.
c. VT, MT and PT.
d. AET, ET. and RT. - Answer -VT, MT and PT.
Equipment that is exposed to moving fluids an/or catalyst are subject to erosion and
erosion-corrosion. What unit is most often damaged by gas borne catalyst particles?
a. Desalting Unit
b. Motor Oil Unit
c. Crude and Vacuum Unit
d. Fluid Catalytic Cracker - Answer -Fluid Catalytic Cracker
What type of unit suffers severe erosion-corrosion due to exposure to naphthenic acids
in some crude oil?
a. Catalytic Reformer Reactor piping
b. FCCU Fractionator overhead lines
c. Hydroprocessing reactor effluent piping
, d. Crude and Vacuum unit piping and vessels - Answer -Crude and Vacuum unit piping
and vessels
Erosion-corrosion is best controlled by using ________ and/or altering the process
environment to reduce corrosivity?
a. Corrosion inhibitors
b. Wear plates
c. Hard-facing by weld overlays
d. More corrosion-resistant alloys - Answer -More corrosion-resistant alloys
What type of material offers improved resistance to naphthenic acid corrosion?
a. Higher chrome containing alloys
b. Higher nickel containing alloys
c. Higher molybdenum containing alloys
d. Higher columbium containing alloys - Answer -Higher molybdenum containing alloys
Inspection methods for detecting the extent of metal loss due to erosion and erosion-
corrosion are:
a. AE, MT and ET
b. VT, UT and RT
c. PT, ET and AET
d. LT, ET and WFMT - Answer -VT, UT and RT
What type of on stream inspection method can detect the loss of refractory on an
operating unit?
a. Visual inspection
b. Infrared scan
c. Ultrasonic scan
d. Eddy Current - Answer -Infrared scan
What is the typical erosion-corrosion rate in mpy on Monel immersed in seawater flume
with the seawater traveling over it at 4fps?
a. 0.2 mpy
b. <0.2 mpy
c. 1 mpy
d. 0.3 mpy - Answer -<0.2 mpy
Three types of equipment with mechanical loading that are affected by mechanical
fatigue cracking are listed below. One is not correct, pick the incorrect item.
Three of the steels listed below are susceptible to brittle fracture. Pick the one that is
not.
a. Carbon steel.
b. 300 series of stainless steels.
c. Low alloy steel.
d. 400 series of stainless steels - Answer -300 series of stainless steels.
What year did the ASME boiler and Pressure Vessel Code, Section VIII, Division 1
begin to require thoughness as a criteria for vessels operating at cold temperatures?
a. 1987
b. 1942
c. 1995
d.1963 - Answer -1987
Thermal fatigue cracking has been a major problem in:
a. depropanizer vessels
b. coke drum shells
c. boiler feed water tanks
d. catalyst storage drums - Answer -coke drum shells
Since cracking is usually surface connected, effective methods of inspection are:
a. WFMT and LT.
b. ET, and AE.
c. VT, MT and PT.
d. AET, ET. and RT. - Answer -VT, MT and PT.
Equipment that is exposed to moving fluids an/or catalyst are subject to erosion and
erosion-corrosion. What unit is most often damaged by gas borne catalyst particles?
a. Desalting Unit
b. Motor Oil Unit
c. Crude and Vacuum Unit
d. Fluid Catalytic Cracker - Answer -Fluid Catalytic Cracker
What type of unit suffers severe erosion-corrosion due to exposure to naphthenic acids
in some crude oil?
a. Catalytic Reformer Reactor piping
b. FCCU Fractionator overhead lines
c. Hydroprocessing reactor effluent piping
, d. Crude and Vacuum unit piping and vessels - Answer -Crude and Vacuum unit piping
and vessels
Erosion-corrosion is best controlled by using ________ and/or altering the process
environment to reduce corrosivity?
a. Corrosion inhibitors
b. Wear plates
c. Hard-facing by weld overlays
d. More corrosion-resistant alloys - Answer -More corrosion-resistant alloys
What type of material offers improved resistance to naphthenic acid corrosion?
a. Higher chrome containing alloys
b. Higher nickel containing alloys
c. Higher molybdenum containing alloys
d. Higher columbium containing alloys - Answer -Higher molybdenum containing alloys
Inspection methods for detecting the extent of metal loss due to erosion and erosion-
corrosion are:
a. AE, MT and ET
b. VT, UT and RT
c. PT, ET and AET
d. LT, ET and WFMT - Answer -VT, UT and RT
What type of on stream inspection method can detect the loss of refractory on an
operating unit?
a. Visual inspection
b. Infrared scan
c. Ultrasonic scan
d. Eddy Current - Answer -Infrared scan
What is the typical erosion-corrosion rate in mpy on Monel immersed in seawater flume
with the seawater traveling over it at 4fps?
a. 0.2 mpy
b. <0.2 mpy
c. 1 mpy
d. 0.3 mpy - Answer -<0.2 mpy
Three types of equipment with mechanical loading that are affected by mechanical
fatigue cracking are listed below. One is not correct, pick the incorrect item.
