API 510 practiceexams.pdf (Closed Book Exam A) Questions
With Complete Solutions
A bulged metal rupture disk with the pressure on the concave
side has life expectancy of;
1. 5 years.
2. 2 years.
3. I year.
4. Indefinite length. Correct Answer I year.
A major concem(s) when inspecting a nozzle flange face is/are;
1. Brand name of the flange.
2. Brand name of the gaskets used in the flange.
3. Surface corrosion in the bolt circle.
4. Distortion of the flange and the condition of the gasket seating
surfaces. Correct Answer Distortion of the flange and the
condition of the gasket seating surfaces.
A new vessel has been installed, what must be done in order
accept the vessel for operation?
1. A first internal inspection.
2. A first internal inspection, however if a manufactures' data
report (U1) assuring that the vessel is satisfactory for its
intended service is available the first internal may be waived.
3. Base line thickness readings must be taken per OSHA 1920
(j).
4. Base line thickness reading must be taken per OSHA 1910(j).
Correct Answer A first internal inspection, however if a
,manufactures' data report (U1) assuring that the vessel is
satisfactory for its intended service is available the first internal
may be waived.
A P No. 1 material that is plate has been rolled into a cylinder
and butt welded. The cylinder is exactly 1-1/4" thick, and it is
used in the repair of a pressure boundary on a U stamped vessel,
the following is a true statement.
1. It must receive full radiography.
2. It may be not spot radiographed.
3. It may not be fully radiography.
4. It may receive spot, full, or no radiography depending on
original the original Ul form. Correct Answer It may receive
spot, full, or no radiography depending on original the original
Ul form.
A relief valve has been shipped lying down on its side; this is a
problem because;
1. Relief valves are often heavy and are sometimes difficult to
upright.
2. Flange faces may be damaged during shipment.
3. Springs in the valve may shift and distort and as a result not
exert the same force on stems and seats.
4. Springs may slip out and be lost during shipment. Correct
Answer Springs in the valve may shift and distort and as a
result not exert the same force on stems and seats.
A shielding gas used for a welding process should be:
,1. volatile
2. used only when absolutely needed
3. have a water vapor content for cooling the arc
4. dense Correct Answer dense
A spot radiograph of a butt weld in a 1 inch thick shell of a
vessel marked RT-3 was found to have a rounded indication, the
dimension of such an indication according to Section VIII Div. 1
is;
1. 1/32 of an inch.
2. 1/3 of an inch.
3. 2/3 of an inch
4. None, rounded indications are not a consideration with spot
radiography. Correct Answer None, rounded indications are
not a consideration with spot radiography.
A vessel is to undergo a hydrostatic test after an alteration; the
test pressure will be 785 psi. Using standard commercially
available gauges what is the minimum and maximum gage
pressure range acceptable for this test?
1. 0-1000 to 0-3000 psi
2. 0-1500 to 0-3000 psi
3. 0-1000 to 0-2500 psi
4. 0-850 to 0-1500 psi Correct Answer 0-1500 to 0-3000 psi
A welding procedure is a detailed plan developed by whom to
ensure sound welds.
1. API-510 Inspector
, 2. Welder
3. Quality Control Manager
4. Manufacturer or Contractor Correct Answer Manufacturer
or Contractor
According to Section IX, all welders must be re-tested for a
process;
1. if they have not been tested before.
2. if they have not used a process in the past 9 months or longer.
3. if they have not used a process for the past 12 months or
longer and have not been welding with other processes.
4. if the welder's ability to make sounds welds with process is in
doubt. Correct Answer if the welder's ability to make sounds
welds with process is in doubt.
After removing an exchanger bundle you find a Prussian blue
coating on the tubes, what do you suspect causes this coating?
1. Amino acid.
2. Cyanide.
3. Ferri-ferrocyanide.
4. Phosphoric acid. Correct Answer Ferri-ferrocyanide.
An above the ground vessel is required to receive an external
inspection;
1. Every 4 years.
2. At the half corrosion-rate life.
3. Every 10 years.
With Complete Solutions
A bulged metal rupture disk with the pressure on the concave
side has life expectancy of;
1. 5 years.
2. 2 years.
3. I year.
4. Indefinite length. Correct Answer I year.
A major concem(s) when inspecting a nozzle flange face is/are;
1. Brand name of the flange.
2. Brand name of the gaskets used in the flange.
3. Surface corrosion in the bolt circle.
4. Distortion of the flange and the condition of the gasket seating
surfaces. Correct Answer Distortion of the flange and the
condition of the gasket seating surfaces.
A new vessel has been installed, what must be done in order
accept the vessel for operation?
1. A first internal inspection.
2. A first internal inspection, however if a manufactures' data
report (U1) assuring that the vessel is satisfactory for its
intended service is available the first internal may be waived.
3. Base line thickness readings must be taken per OSHA 1920
(j).
4. Base line thickness reading must be taken per OSHA 1910(j).
Correct Answer A first internal inspection, however if a
,manufactures' data report (U1) assuring that the vessel is
satisfactory for its intended service is available the first internal
may be waived.
A P No. 1 material that is plate has been rolled into a cylinder
and butt welded. The cylinder is exactly 1-1/4" thick, and it is
used in the repair of a pressure boundary on a U stamped vessel,
the following is a true statement.
1. It must receive full radiography.
2. It may be not spot radiographed.
3. It may not be fully radiography.
4. It may receive spot, full, or no radiography depending on
original the original Ul form. Correct Answer It may receive
spot, full, or no radiography depending on original the original
Ul form.
A relief valve has been shipped lying down on its side; this is a
problem because;
1. Relief valves are often heavy and are sometimes difficult to
upright.
2. Flange faces may be damaged during shipment.
3. Springs in the valve may shift and distort and as a result not
exert the same force on stems and seats.
4. Springs may slip out and be lost during shipment. Correct
Answer Springs in the valve may shift and distort and as a
result not exert the same force on stems and seats.
A shielding gas used for a welding process should be:
,1. volatile
2. used only when absolutely needed
3. have a water vapor content for cooling the arc
4. dense Correct Answer dense
A spot radiograph of a butt weld in a 1 inch thick shell of a
vessel marked RT-3 was found to have a rounded indication, the
dimension of such an indication according to Section VIII Div. 1
is;
1. 1/32 of an inch.
2. 1/3 of an inch.
3. 2/3 of an inch
4. None, rounded indications are not a consideration with spot
radiography. Correct Answer None, rounded indications are
not a consideration with spot radiography.
A vessel is to undergo a hydrostatic test after an alteration; the
test pressure will be 785 psi. Using standard commercially
available gauges what is the minimum and maximum gage
pressure range acceptable for this test?
1. 0-1000 to 0-3000 psi
2. 0-1500 to 0-3000 psi
3. 0-1000 to 0-2500 psi
4. 0-850 to 0-1500 psi Correct Answer 0-1500 to 0-3000 psi
A welding procedure is a detailed plan developed by whom to
ensure sound welds.
1. API-510 Inspector
, 2. Welder
3. Quality Control Manager
4. Manufacturer or Contractor Correct Answer Manufacturer
or Contractor
According to Section IX, all welders must be re-tested for a
process;
1. if they have not been tested before.
2. if they have not used a process in the past 9 months or longer.
3. if they have not used a process for the past 12 months or
longer and have not been welding with other processes.
4. if the welder's ability to make sounds welds with process is in
doubt. Correct Answer if the welder's ability to make sounds
welds with process is in doubt.
After removing an exchanger bundle you find a Prussian blue
coating on the tubes, what do you suspect causes this coating?
1. Amino acid.
2. Cyanide.
3. Ferri-ferrocyanide.
4. Phosphoric acid. Correct Answer Ferri-ferrocyanide.
An above the ground vessel is required to receive an external
inspection;
1. Every 4 years.
2. At the half corrosion-rate life.
3. Every 10 years.
