Closed Book API 510 Practice Exam A Questions With
Complete Solutions
A bulged metal rupture disk with the pressure on the concave
side has life expectancy of; Correct Answers I year.
A major concem(s) when inspecting a nozzle flange face is/are;
Correct Answers 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? Correct Answers 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. Correct Answers 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; Correct Answers 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: Correct
Answers 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; Correct Answers 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? Correct Answers 0-
1500 to 0-3000 psi
A welding procedure is a detailed plan developed by whom to
ensure sound welds. Correct Answers Manufacturer or
Contractor
According to Section IX, all welders must be re-tested for a
process; Correct Answers 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?
Correct Answers Ferri-ferrocyanide.
An above the ground vessel is required to receive an external
inspection; Correct Answers Every five years or at the same
interval as the internal inspection whichever is less.
Are nondestructive procedures allowed in lieu of hydrostatic
testing, if so what must be done? Correct Answers Engineer
, experienced in pressure vessel design and the API inspector
must be consulted.
Before any repair to a pressure vessel in accordance with its
code of construction, what if any additional requirements for
inspection may need to be considered? Correct Answers
Jurisdictional requirements that might override the API 510
Code.
Before starting the inspection of a pressure vessel, especially
one in severe service, the inspector should determine; Correct
Answers The pressure and temperature conditions under which
the vessel has been operated since the last inspection.
Blistering, HIC, and SOH1C damage have been found to occur
between ______________ Correct Answers ambient and 300
°F or higher
Carbon steels,___________are not susceptible to CL-Stress
Corrosion Cracking. Correct Answers low alloy and 400
Series Stainless Steels
Charpy impact tests are intended to prove that a material is;
Correct Answers tough at the desired MDMT of the vessel to
be constructed using that material.
Corrosion in boiler feed water and condensate return system is
usually the result of dissolved gases, oxygen and carbon dioxide.
Critical factors are the concentration of dissolved gas (oxygen
and carbon dioxide),__________, quality of the feed water and
Complete Solutions
A bulged metal rupture disk with the pressure on the concave
side has life expectancy of; Correct Answers I year.
A major concem(s) when inspecting a nozzle flange face is/are;
Correct Answers 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? Correct Answers 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. Correct Answers 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; Correct Answers 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: Correct
Answers 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; Correct Answers 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? Correct Answers 0-
1500 to 0-3000 psi
A welding procedure is a detailed plan developed by whom to
ensure sound welds. Correct Answers Manufacturer or
Contractor
According to Section IX, all welders must be re-tested for a
process; Correct Answers 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?
Correct Answers Ferri-ferrocyanide.
An above the ground vessel is required to receive an external
inspection; Correct Answers Every five years or at the same
interval as the internal inspection whichever is less.
Are nondestructive procedures allowed in lieu of hydrostatic
testing, if so what must be done? Correct Answers Engineer
, experienced in pressure vessel design and the API inspector
must be consulted.
Before any repair to a pressure vessel in accordance with its
code of construction, what if any additional requirements for
inspection may need to be considered? Correct Answers
Jurisdictional requirements that might override the API 510
Code.
Before starting the inspection of a pressure vessel, especially
one in severe service, the inspector should determine; Correct
Answers The pressure and temperature conditions under which
the vessel has been operated since the last inspection.
Blistering, HIC, and SOH1C damage have been found to occur
between ______________ Correct Answers ambient and 300
°F or higher
Carbon steels,___________are not susceptible to CL-Stress
Corrosion Cracking. Correct Answers low alloy and 400
Series Stainless Steels
Charpy impact tests are intended to prove that a material is;
Correct Answers tough at the desired MDMT of the vessel to
be constructed using that material.
Corrosion in boiler feed water and condensate return system is
usually the result of dissolved gases, oxygen and carbon dioxide.
Critical factors are the concentration of dissolved gas (oxygen
and carbon dioxide),__________, quality of the feed water and
