POWER ENGINEERING 3A2 EXAM
QUESTIONS AND ANSWERS. VERIFIED
2026.
What is the acronym for the American Society of Mechanical Engineers? - ANS ASME
What is the acronym for The National Board of Boiler and Pressure Vessel Inspectors? -
ANS NBBI
The Alberta Boilers Safety Association (ABSA) is responsible for the administration of the
legislation for _________ and _________. - ANS boilers, pressure vessels
What designates the classification of the certificate of competency, required for the role of chief
power engineer? - ANS Kilowatt rating of the power plant
What is the role of the Chief Power Engineer? - ANS Supervision of the other power
engineers and the safe, and efficient, operation of the plant
What is the focus of the Engineers regulations? - ANS State the minimum qualifications
necessary to obtain each class of power engineer certification
What standard regulates Boiler, Pressure Vessel, and Pressure Piping Code? - ANS CSA B51
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,What standard regulates Mechanical Refrigeration Code? - ANS CSA B52
What code regulates the rules for Construction of Power Boilers? - ANS ASME Section I
What code regulates the recommended guidelines for the care of Power Boilers? - ANS ASME
Section VII
What code regulates Chemical Plant and Petroleum Refinery Piping? - ANS B31.3
What is the main focus of the National Board of Boiler and Pressure Vessel Inspectors (NBBI)? -
ANS 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 - ANS True
Qualified and authorized boiler and pressure vessel manufacturers need not be registered with
the National Board. - ANS False
What information will be found in the Boilers and Related Components of the B-51 code? -
ANS 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
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,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 - ANS 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 -
ANS True
What tables are found in the tables section of the B-51 code? - ANS 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? - ANS 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? - ANS True
Pressure relief and rupture devices are not covered in the B-52 code? - ANS 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. - ANS 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
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, 2430 kPa gauge and the average tube temperature is 375°C. The tube material is alloy steel with
specification SA-192. - ANS 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. - ANS 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. - ANS 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. - ANS 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. - ANS 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. - ANS 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. - ANS 3.04 mm
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS AND ANSWERS. VERIFIED
2026.
What is the acronym for the American Society of Mechanical Engineers? - ANS ASME
What is the acronym for The National Board of Boiler and Pressure Vessel Inspectors? -
ANS NBBI
The Alberta Boilers Safety Association (ABSA) is responsible for the administration of the
legislation for _________ and _________. - ANS boilers, pressure vessels
What designates the classification of the certificate of competency, required for the role of chief
power engineer? - ANS Kilowatt rating of the power plant
What is the role of the Chief Power Engineer? - ANS Supervision of the other power
engineers and the safe, and efficient, operation of the plant
What is the focus of the Engineers regulations? - ANS State the minimum qualifications
necessary to obtain each class of power engineer certification
What standard regulates Boiler, Pressure Vessel, and Pressure Piping Code? - ANS CSA B51
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,What standard regulates Mechanical Refrigeration Code? - ANS CSA B52
What code regulates the rules for Construction of Power Boilers? - ANS ASME Section I
What code regulates the recommended guidelines for the care of Power Boilers? - ANS ASME
Section VII
What code regulates Chemical Plant and Petroleum Refinery Piping? - ANS B31.3
What is the main focus of the National Board of Boiler and Pressure Vessel Inspectors (NBBI)? -
ANS 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 - ANS True
Qualified and authorized boiler and pressure vessel manufacturers need not be registered with
the National Board. - ANS False
What information will be found in the Boilers and Related Components of the B-51 code? -
ANS 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
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,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 - ANS 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 -
ANS True
What tables are found in the tables section of the B-51 code? - ANS 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? - ANS 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? - ANS True
Pressure relief and rupture devices are not covered in the B-52 code? - ANS 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. - ANS 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
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, 2430 kPa gauge and the average tube temperature is 375°C. The tube material is alloy steel with
specification SA-192. - ANS 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. - ANS 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. - ANS 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. - ANS 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. - ANS 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. - ANS 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. - ANS 3.04 mm
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
