Power Engineering: 3A2 Final Review
Exam With Guaranteed Pass Solutions
2026-2027 Updated.
What is the acronym for the American Society of Mechanical Engineers? - Answer ASME
What is the acronym for The National Board of Boiler and Pressure Vessel Inspectors? - Answer
NBBI
The Alberta Boilers Safety Association (ABSA) is responsible for the administration of the
legislation for _________ and _________. - Answer boilers, pressure vessels
What designates the classification of the certificate of competency, required for the role of chief
power engineer? - Answer Kilowatt rating of the power plant
What is the role of the Chief Power Engineer? - Answer Supervision of the other power
engineers and the safe, and efficient, operation of the plant
What is the focus of the Engineers regulations? - Answer State the minimum qualifications
necessary to obtain each class of power engineer certification
What standard regulates Boiler, Pressure Vessel, and Pressure Piping Code? - Answer CSA B51
What standard regulates Mechanical Refrigeration Code? - Answer CSA B52
What code regulates the rules for Construction of Power Boilers? - Answer ASME Section I
What code regulates the recommended guidelines for the care of Power Boilers? - Answer
ASME Section VII
What code regulates Chemical Plant and Petroleum Refinery Piping? - Answer B31.3
What is the main focus of the National Board of Boiler and Pressure Vessel Inspectors (NBBI)? -
Answer To establish uniform qualifications for inspectors and acceptance of standard code
requirements
,Today, all Canadian provinces and most of the states in the United States, require boilers and
pressure vessels to be inspected during fabrication by an inspector holding a National Board
commission - Answer True
Qualified and authorized boiler and pressure vessel manufacturers need not be registered with
the National Board. - Answer False
What information will be found in the Boilers and Related Components of the B-51 code? -
Answer This section identifies the standards used in the design, construction, installation,
inspection, testing, and repair, along with water gauges, low water cut off, fusible plugs, boiler
installation, inspection openings, outlet dampers, blowoff tanks, and cast iron steam and hot
water boilers
The pressure vessels section of the B-51 code identifies pressure vessels and their installation,
including pressure vessel inspection openings. This section also shows the design of cushion
tanks, blowoff vessels, and the installation of air receivers - Answer True
The repairs and alterations section of the B-51 outlines the standards that must be followed
when replacing existing pieces of pressure equipment with new pieces of pressure equipment -
Answer True
What tables are found in the tables section of the B-51 code? - Answer Categories of fittings
Minimum dimensions of blowoff vessels
Minimum dimensions of blowoff vessels for coil-tube boilers
What are the two main purposes of the CSA B-52 code? - Answer To provide for the safe
design, construction, installation, operation and repair of refrigerating and air conditioning
equipment and systems, and related equipment.
To promote uniform requirements among the provinces and territories.
Clear definitions for terms and equipment relating to refrigeration and air conditioning
equipment are described in sections of the B-52 code? - Answer True
Pressure relief and rupture devices are not covered in the B-52 code? - Answer False
Calculate the minimum required wall thickness of a superheater tube. The tube is 40 mm O.D.
and is connected to a header by strength welding. The maximum allowable working pressure is
2000 kPa gauge and the average tube temperature is 212°C. The tube material is alloy steel with
specification SA-213-T11. - Answer 0.5846 mm
,Calculate the minimum required wall thickness of a superheater tube. The tube is 100 mm O.D.
and is connected to a header by strength welding. The maximum allowable working pressure is
2430 kPa gauge and the average tube temperature is 375°C. The tube material is alloy steel with
specification SA-192. - Answer 2.014 mm
Calculate the maximum allowable working pressure, in kPa, for a watertube boiler tube, which
is 73.5 mm O.D. and has a minimum wall thickness of 4.71 mm. The tube is strength-welded
into place in the boiler and is located in the furnace area of the boiler. Tube material is carbon
steel, SA-192, with a mean wall temperature of 380°C. - Answer 9.921 Mpa
Calculate the minimum required wall thickness of a boiler tube which is strength welded to a
header. The maximum allowable working pressure is 4450 kPa, and the mean wall temperature
is 370°C. The tube material is SA-192 and the outside diameter is 50 mm. - Answer 1.62 mm
Calculate the maximum allowable working pressure, in kPa, for a watertube boiler tube, which
is 76 mm O.D. and has a minimum wall thickness of 3.25 mm. The tube is strength-welded into
place in the boiler and is located in the furnace area of the boiler. Tube material is carbon steel,
SA-192, with a mean wall temperature of 375°C. - Answer 6.2 Mpa
Calculate the minimum required wall thickness of a superheater tube. The tube is 76 mm O.D.
and is connected to a header by strength welding. The maximum allowable working pressure is
4150 kPa gauge and the average tube temperature is 400°C. The tube material is alloy steel with
specification SA-213-T11. - Answer 1.88 mm
Calculate the minimum required plate thickness of a welded boiler drum having an inside radius
of 935 mm and a maximum design working pressure of 9020 kPa. The plate material is SA-516
grade 70 and metal temperature does not exceed 320°C. Weld reinforcement on the
longitudinal joints has been removed flush with the surface of the plate. - Answer 72.96 mm
Calculate the minimum thickness required for a welded steel pipe of material SA-209 grade T1b,
plain end. The outside diameter of the pipe is 273.05 mm and the operating pressure and
temperature are 2000 kPa and 400°C, respectively. - Answer 3.04 mm
A steam header between the boiler and first stop valve is to be fabricated of 152.4 mm O.D.
pipe. The material specification is SA-369 FPA seamless pipe. The operating pressure will be
8440 kPa at 420°C. The pipe will be joined by full penetration welds and will be fully
radiographed. Calculate the minimum thickness of the pipe wall if the manufacturer's tolerance
is 12.5%. - Answer 10.90 mm
A boiler drum is made of SA-515-70 steel and has a ligament efficiency of 0.66. If the steam
temperature is 280°C and the inside diameter of the drum is 1.6 m and the thickness of the
drum is 68.45 mm. What will the maximum operating pressure be, in kPa? - Answer 6500 kPa
, Calculate the required minimum thickness (in mm) of steam piping which will carry steam at a
pressure of 4300 kPa gauge and a temperature of 370°C. The piping is plain-end, 273.05 mm
O.D.; the material is low alloy steel, SA-335 P11. A manufacturer's tolerance of 12.5% must be
added to the pipe. - Answer 5.61 mm + tolerance = 6.31 mm
Calculate the minimum thickness required for a seamless steel feedwater pipe of material SA-
209, grade T1. The outside diameter of the pipe is 323.85 mm and the operating pressure and
temperature are 5200 kPa and 500°C respectively. The pipe is plain-ended. Assume that the
material is an austenitic steel. - Answer 11.85 mm
Calculate the required thickness, in mm, of a superheater outlet header, operating at 500°C and
having a maximum allowable working pressure of 17 MPa. The header material is SA-335-P7
and the outside diameter is 457.2 mm. - Answer 54.35 mm
Calculate the maximum allowable working pressure for a welded drum if the plates are 25 mm
thick and of material SA-299. The inside diameter of the drum is 988 mm and the joint efficiency
is 100%. Assume the steam temperature will not exceed 400°C. - Answer 5.305 Mpa
Calculate the thickness of a seamless, unstayed dished head with pressure on the concave side,
having a flanged-in manhole 280 mm by 380 mm. The head has a diameter of 1235 mm and is a
segment of a sphere with a dish radius of 1016 mm. The maximum allowable working pressure
is 1380 kPa, the material is SA-285 C and the metal temperature does not exceed 204°C. -
Answer 18.37 mm
Calculate the thickness of a seamless, blank unstayed dished head having pressure on the
concave side. The head has a diameter of 1067 mm and is a segment of a sphere with a dish
radius of 915 mm. The maximum allowable working pressure is 2068 kPa and the material is SA-
285 A. The metal temperature does not exceed 250°C. - Answer 25.27 mm
Calculate the thickness required for a dished seamless head, which is attached to a boiler having
a shell diameter of 1200 mm. The head has a flanged-in manhole with one dimension equal to
150 mm. The head is a segment of a sphere with a dished radius of 1120 mm. The head material
is SA-285 Grade C, the maximum allowable working pressure is 1930 kPa and the steam
temperature does not exceed 260°C. - Answer 23.7 mm
Calculate the thickness of a seamless blank unstayed dished head having pressure on the
concave side. The head has a diameter of 830 mm and is a segment of a sphere with a dish
radius of 615 mm. The maximum allowable working pressure is 1650 kPa, the material is SA-299
and the metal temperature does not exceed 200°C. - Answer 8.77 mm
Calculate the minimum required thickness, in mm, for a blank, unstayed, full-hemispherical
head, with the pressure on the concave side. The head is fabricated from seamless material and
is double butt welded to the shell. All reinforcement is removed and fully radiographed. The
Exam With Guaranteed Pass Solutions
2026-2027 Updated.
What is the acronym for the American Society of Mechanical Engineers? - Answer ASME
What is the acronym for The National Board of Boiler and Pressure Vessel Inspectors? - Answer
NBBI
The Alberta Boilers Safety Association (ABSA) is responsible for the administration of the
legislation for _________ and _________. - Answer boilers, pressure vessels
What designates the classification of the certificate of competency, required for the role of chief
power engineer? - Answer Kilowatt rating of the power plant
What is the role of the Chief Power Engineer? - Answer Supervision of the other power
engineers and the safe, and efficient, operation of the plant
What is the focus of the Engineers regulations? - Answer State the minimum qualifications
necessary to obtain each class of power engineer certification
What standard regulates Boiler, Pressure Vessel, and Pressure Piping Code? - Answer CSA B51
What standard regulates Mechanical Refrigeration Code? - Answer CSA B52
What code regulates the rules for Construction of Power Boilers? - Answer ASME Section I
What code regulates the recommended guidelines for the care of Power Boilers? - Answer
ASME Section VII
What code regulates Chemical Plant and Petroleum Refinery Piping? - Answer B31.3
What is the main focus of the National Board of Boiler and Pressure Vessel Inspectors (NBBI)? -
Answer To establish uniform qualifications for inspectors and acceptance of standard code
requirements
,Today, all Canadian provinces and most of the states in the United States, require boilers and
pressure vessels to be inspected during fabrication by an inspector holding a National Board
commission - Answer True
Qualified and authorized boiler and pressure vessel manufacturers need not be registered with
the National Board. - Answer False
What information will be found in the Boilers and Related Components of the B-51 code? -
Answer This section identifies the standards used in the design, construction, installation,
inspection, testing, and repair, along with water gauges, low water cut off, fusible plugs, boiler
installation, inspection openings, outlet dampers, blowoff tanks, and cast iron steam and hot
water boilers
The pressure vessels section of the B-51 code identifies pressure vessels and their installation,
including pressure vessel inspection openings. This section also shows the design of cushion
tanks, blowoff vessels, and the installation of air receivers - Answer True
The repairs and alterations section of the B-51 outlines the standards that must be followed
when replacing existing pieces of pressure equipment with new pieces of pressure equipment -
Answer True
What tables are found in the tables section of the B-51 code? - Answer Categories of fittings
Minimum dimensions of blowoff vessels
Minimum dimensions of blowoff vessels for coil-tube boilers
What are the two main purposes of the CSA B-52 code? - Answer To provide for the safe
design, construction, installation, operation and repair of refrigerating and air conditioning
equipment and systems, and related equipment.
To promote uniform requirements among the provinces and territories.
Clear definitions for terms and equipment relating to refrigeration and air conditioning
equipment are described in sections of the B-52 code? - Answer True
Pressure relief and rupture devices are not covered in the B-52 code? - Answer False
Calculate the minimum required wall thickness of a superheater tube. The tube is 40 mm O.D.
and is connected to a header by strength welding. The maximum allowable working pressure is
2000 kPa gauge and the average tube temperature is 212°C. The tube material is alloy steel with
specification SA-213-T11. - Answer 0.5846 mm
,Calculate the minimum required wall thickness of a superheater tube. The tube is 100 mm O.D.
and is connected to a header by strength welding. The maximum allowable working pressure is
2430 kPa gauge and the average tube temperature is 375°C. The tube material is alloy steel with
specification SA-192. - Answer 2.014 mm
Calculate the maximum allowable working pressure, in kPa, for a watertube boiler tube, which
is 73.5 mm O.D. and has a minimum wall thickness of 4.71 mm. The tube is strength-welded
into place in the boiler and is located in the furnace area of the boiler. Tube material is carbon
steel, SA-192, with a mean wall temperature of 380°C. - Answer 9.921 Mpa
Calculate the minimum required wall thickness of a boiler tube which is strength welded to a
header. The maximum allowable working pressure is 4450 kPa, and the mean wall temperature
is 370°C. The tube material is SA-192 and the outside diameter is 50 mm. - Answer 1.62 mm
Calculate the maximum allowable working pressure, in kPa, for a watertube boiler tube, which
is 76 mm O.D. and has a minimum wall thickness of 3.25 mm. The tube is strength-welded into
place in the boiler and is located in the furnace area of the boiler. Tube material is carbon steel,
SA-192, with a mean wall temperature of 375°C. - Answer 6.2 Mpa
Calculate the minimum required wall thickness of a superheater tube. The tube is 76 mm O.D.
and is connected to a header by strength welding. The maximum allowable working pressure is
4150 kPa gauge and the average tube temperature is 400°C. The tube material is alloy steel with
specification SA-213-T11. - Answer 1.88 mm
Calculate the minimum required plate thickness of a welded boiler drum having an inside radius
of 935 mm and a maximum design working pressure of 9020 kPa. The plate material is SA-516
grade 70 and metal temperature does not exceed 320°C. Weld reinforcement on the
longitudinal joints has been removed flush with the surface of the plate. - Answer 72.96 mm
Calculate the minimum thickness required for a welded steel pipe of material SA-209 grade T1b,
plain end. The outside diameter of the pipe is 273.05 mm and the operating pressure and
temperature are 2000 kPa and 400°C, respectively. - Answer 3.04 mm
A steam header between the boiler and first stop valve is to be fabricated of 152.4 mm O.D.
pipe. The material specification is SA-369 FPA seamless pipe. The operating pressure will be
8440 kPa at 420°C. The pipe will be joined by full penetration welds and will be fully
radiographed. Calculate the minimum thickness of the pipe wall if the manufacturer's tolerance
is 12.5%. - Answer 10.90 mm
A boiler drum is made of SA-515-70 steel and has a ligament efficiency of 0.66. If the steam
temperature is 280°C and the inside diameter of the drum is 1.6 m and the thickness of the
drum is 68.45 mm. What will the maximum operating pressure be, in kPa? - Answer 6500 kPa
, Calculate the required minimum thickness (in mm) of steam piping which will carry steam at a
pressure of 4300 kPa gauge and a temperature of 370°C. The piping is plain-end, 273.05 mm
O.D.; the material is low alloy steel, SA-335 P11. A manufacturer's tolerance of 12.5% must be
added to the pipe. - Answer 5.61 mm + tolerance = 6.31 mm
Calculate the minimum thickness required for a seamless steel feedwater pipe of material SA-
209, grade T1. The outside diameter of the pipe is 323.85 mm and the operating pressure and
temperature are 5200 kPa and 500°C respectively. The pipe is plain-ended. Assume that the
material is an austenitic steel. - Answer 11.85 mm
Calculate the required thickness, in mm, of a superheater outlet header, operating at 500°C and
having a maximum allowable working pressure of 17 MPa. The header material is SA-335-P7
and the outside diameter is 457.2 mm. - Answer 54.35 mm
Calculate the maximum allowable working pressure for a welded drum if the plates are 25 mm
thick and of material SA-299. The inside diameter of the drum is 988 mm and the joint efficiency
is 100%. Assume the steam temperature will not exceed 400°C. - Answer 5.305 Mpa
Calculate the thickness of a seamless, unstayed dished head with pressure on the concave side,
having a flanged-in manhole 280 mm by 380 mm. The head has a diameter of 1235 mm and is a
segment of a sphere with a dish radius of 1016 mm. The maximum allowable working pressure
is 1380 kPa, the material is SA-285 C and the metal temperature does not exceed 204°C. -
Answer 18.37 mm
Calculate the thickness of a seamless, blank unstayed dished head having pressure on the
concave side. The head has a diameter of 1067 mm and is a segment of a sphere with a dish
radius of 915 mm. The maximum allowable working pressure is 2068 kPa and the material is SA-
285 A. The metal temperature does not exceed 250°C. - Answer 25.27 mm
Calculate the thickness required for a dished seamless head, which is attached to a boiler having
a shell diameter of 1200 mm. The head has a flanged-in manhole with one dimension equal to
150 mm. The head is a segment of a sphere with a dished radius of 1120 mm. The head material
is SA-285 Grade C, the maximum allowable working pressure is 1930 kPa and the steam
temperature does not exceed 260°C. - Answer 23.7 mm
Calculate the thickness of a seamless blank unstayed dished head having pressure on the
concave side. The head has a diameter of 830 mm and is a segment of a sphere with a dish
radius of 615 mm. The maximum allowable working pressure is 1650 kPa, the material is SA-299
and the metal temperature does not exceed 200°C. - Answer 8.77 mm
Calculate the minimum required thickness, in mm, for a blank, unstayed, full-hemispherical
head, with the pressure on the concave side. The head is fabricated from seamless material and
is double butt welded to the shell. All reinforcement is removed and fully radiographed. The
