3A2 ABSA study Set Questions with Correct Answers Latest Update 2025/2026
ASME - Answers Acronym for the American Society of Mechanical Engineers.
NBBI - Answers Acronym for The National Board of Boiler and Pressure Vessel Inspectors.
ABSA - Answers Alberta Boilers Safety Association responsible for the administration of
legislation for boilers and pressure vessels.
Kilowatt rating of the power plant - Answers Designates the classification of the certificate of
competency required for the role of chief power engineer.
Chief Power Engineer - Answers Responsible for supervision of the other power engineers and
the safe, and efficient, operation of the plant.
Engineers regulations - Answers State the minimum qualifications necessary to obtain each
class of power engineer certification.
CSA B51 - Answers Standard that regulates Boiler, Pressure Vessel, and Pressure Piping Code.
CSA B52 - Answers Standard that regulates Mechanical Refrigeration Code.
ASME Section I - Answers Code that regulates the rules for Construction of Power Boilers.
ASME Section VII - Answers Code that regulates the recommended guidelines for the care of
Power Boilers.
B31.3 - Answers Code that regulates Chemical Plant and Petroleum Refinery Piping.
National Board of Boiler and Pressure Vessel Inspectors (NBBI) - Answers Main focus is to
establish uniform qualifications for inspectors and acceptance of standard code requirements.
Inspection Requirement - Answers 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.
Registration Requirement - Answers Qualified and authorized boiler and pressure vessel
manufacturers need not be registered with the National Board.
B-51 code - Answers Contains information that must appear on the nameplates of every boiler,
pressure vessel, safety valve, relief valve and rupture disc.
Pressure Vessel Installation - Answers Identifies pressure vessels and their installation,
including pressure vessel inspection openings.
Piping and Fittings Standards - Answers Lists the codes and standards that must be used,
including ANSI/ASME standards B31.1 and B31.3.
,Refrigeration Equipment Standards - Answers Refers to CSA B52 for the standard to be met in
the design, construction, installation, inspection, testing, and repair of refrigeration equipment.
Boiler Installation Standards - Answers Identifies the standards used in the design, construction,
installation, inspection, testing, and repair of boilers.
Cushion tanks - Answers A type of pressure vessel designed to absorb pressure fluctuations.
Blowoff vessels - Answers Pressure vessels used to discharge steam or water from a system.
Air receivers - Answers Pressure vessels that store compressed air.
Repairs and alterations section of the B-51 - Answers Outlines the standards for replacing
existing pieces of pressure equipment.
Tables section of the B-51 code - Answers Contains categories of fittings, minimum dimensions
of blowoff vessels, and steam and refrigeration tables.
CSA B-52 code - Answers Defines terms and equipment relating to refrigeration and air
conditioning equipment.
Pressure relief and rupture devices - Answers Devices covered in the B-52 code that ensure
safety in pressure systems.
Minimum required wall thickness of a superheater tube - Answers Calculated based on the
tube's outer diameter, working pressure, and temperature.
Maximum allowable working pressure for a watertube boiler tube - Answers Determined by the
tube's outer diameter, minimum wall thickness, and material properties.
SA-213-T11 - Answers Specification for alloy steel used in high-temperature applications.
SA-192 - Answers Specification for carbon steel used in boiler tubes.
Boiler tube - Answers A tube used in boilers to transfer heat and contain steam or water.
Welded boiler drum - Answers A cylindrical component of a boiler that contains water and
steam.
Inside radius of a welded boiler drum - Answers The internal radius of the drum, used in
thickness calculations.
Maximum design working pressure - Answers The highest pressure that a vessel is designed to
withstand.
Metal temperature - Answers The temperature of the material used in pressure vessels during
operation.
, Weld reinforcement - Answers Material added to a weld joint to enhance strength, which may be
removed for smoothness.
Minimum dimensions of blowoff vessels - Answers Specifications that ensure blowoff vessels
can safely operate under pressure.
Steam Tables - Answers Tables that provide thermodynamic properties of steam.
Refrigeration Tables - Answers Tables that provide thermodynamic properties relevant to
refrigeration systems.
Mean wall temperature - Answers The average temperature of the wall of a tube or vessel
during operation.
Gauge pressure - Answers Pressure measured relative to atmospheric pressure.
O.D. - Answers Outer Diameter, a measurement of the external width of a tube or vessel.
Minimum thickness for welded steel pipe - Answers 3.04 mm for a welded steel pipe of material
SA-209 grade T1b with an outside diameter of 273.05 mm, operating pressure of 2000 kPa, and
temperature of 400°C.
Minimum thickness for steam header pipe - Answers 10.90 mm for a steam header made of SA-
369 FPA seamless pipe with an outside diameter of 152.4 mm, operating pressure of 8440 kPa,
and temperature of 420°C.
Maximum operating pressure for boiler drum - Answers 6500 kPa for a boiler drum made of SA-
515-70 steel with a ligament efficiency of 0.66, steam temperature of 280°C, inside diameter of
1.6 m, and thickness of 68.45 mm.
Minimum thickness for steam piping - Answers 6.31 mm (5.61 mm + tolerance) for steam
piping carrying steam at 4300 kPa gauge and 370°C, with a plain-end, 273.05 mm O.D., material
SA-335 P11.
Minimum thickness for seamless steel feedwater pipe - Answers 11.85 mm for a seamless
steel feedwater pipe of material SA-209, grade T1, with an outside diameter of 323.85 mm,
operating pressure of 5200 kPa, and temperature of 500°C.
Required thickness for superheater outlet header - Answers 54.35 mm for a superheater outlet
header operating at 500°C with a maximum allowable working pressure of 17 MPa, made of SA-
335-P7 with an outside diameter of 457.2 mm.
Maximum allowable working pressure for welded drum - Answers 5.305 MPa for a welded drum
with plates 25 mm thick, material SA-299, inside diameter of 988 mm, and joint efficiency of
100%, with steam temperature not exceeding 400°C.
Thickness of seamless dished head with manhole - Answers 18.37 mm for a seamless,
ASME - Answers Acronym for the American Society of Mechanical Engineers.
NBBI - Answers Acronym for The National Board of Boiler and Pressure Vessel Inspectors.
ABSA - Answers Alberta Boilers Safety Association responsible for the administration of
legislation for boilers and pressure vessels.
Kilowatt rating of the power plant - Answers Designates the classification of the certificate of
competency required for the role of chief power engineer.
Chief Power Engineer - Answers Responsible for supervision of the other power engineers and
the safe, and efficient, operation of the plant.
Engineers regulations - Answers State the minimum qualifications necessary to obtain each
class of power engineer certification.
CSA B51 - Answers Standard that regulates Boiler, Pressure Vessel, and Pressure Piping Code.
CSA B52 - Answers Standard that regulates Mechanical Refrigeration Code.
ASME Section I - Answers Code that regulates the rules for Construction of Power Boilers.
ASME Section VII - Answers Code that regulates the recommended guidelines for the care of
Power Boilers.
B31.3 - Answers Code that regulates Chemical Plant and Petroleum Refinery Piping.
National Board of Boiler and Pressure Vessel Inspectors (NBBI) - Answers Main focus is to
establish uniform qualifications for inspectors and acceptance of standard code requirements.
Inspection Requirement - Answers 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.
Registration Requirement - Answers Qualified and authorized boiler and pressure vessel
manufacturers need not be registered with the National Board.
B-51 code - Answers Contains information that must appear on the nameplates of every boiler,
pressure vessel, safety valve, relief valve and rupture disc.
Pressure Vessel Installation - Answers Identifies pressure vessels and their installation,
including pressure vessel inspection openings.
Piping and Fittings Standards - Answers Lists the codes and standards that must be used,
including ANSI/ASME standards B31.1 and B31.3.
,Refrigeration Equipment Standards - Answers Refers to CSA B52 for the standard to be met in
the design, construction, installation, inspection, testing, and repair of refrigeration equipment.
Boiler Installation Standards - Answers Identifies the standards used in the design, construction,
installation, inspection, testing, and repair of boilers.
Cushion tanks - Answers A type of pressure vessel designed to absorb pressure fluctuations.
Blowoff vessels - Answers Pressure vessels used to discharge steam or water from a system.
Air receivers - Answers Pressure vessels that store compressed air.
Repairs and alterations section of the B-51 - Answers Outlines the standards for replacing
existing pieces of pressure equipment.
Tables section of the B-51 code - Answers Contains categories of fittings, minimum dimensions
of blowoff vessels, and steam and refrigeration tables.
CSA B-52 code - Answers Defines terms and equipment relating to refrigeration and air
conditioning equipment.
Pressure relief and rupture devices - Answers Devices covered in the B-52 code that ensure
safety in pressure systems.
Minimum required wall thickness of a superheater tube - Answers Calculated based on the
tube's outer diameter, working pressure, and temperature.
Maximum allowable working pressure for a watertube boiler tube - Answers Determined by the
tube's outer diameter, minimum wall thickness, and material properties.
SA-213-T11 - Answers Specification for alloy steel used in high-temperature applications.
SA-192 - Answers Specification for carbon steel used in boiler tubes.
Boiler tube - Answers A tube used in boilers to transfer heat and contain steam or water.
Welded boiler drum - Answers A cylindrical component of a boiler that contains water and
steam.
Inside radius of a welded boiler drum - Answers The internal radius of the drum, used in
thickness calculations.
Maximum design working pressure - Answers The highest pressure that a vessel is designed to
withstand.
Metal temperature - Answers The temperature of the material used in pressure vessels during
operation.
, Weld reinforcement - Answers Material added to a weld joint to enhance strength, which may be
removed for smoothness.
Minimum dimensions of blowoff vessels - Answers Specifications that ensure blowoff vessels
can safely operate under pressure.
Steam Tables - Answers Tables that provide thermodynamic properties of steam.
Refrigeration Tables - Answers Tables that provide thermodynamic properties relevant to
refrigeration systems.
Mean wall temperature - Answers The average temperature of the wall of a tube or vessel
during operation.
Gauge pressure - Answers Pressure measured relative to atmospheric pressure.
O.D. - Answers Outer Diameter, a measurement of the external width of a tube or vessel.
Minimum thickness for welded steel pipe - Answers 3.04 mm for a welded steel pipe of material
SA-209 grade T1b with an outside diameter of 273.05 mm, operating pressure of 2000 kPa, and
temperature of 400°C.
Minimum thickness for steam header pipe - Answers 10.90 mm for a steam header made of SA-
369 FPA seamless pipe with an outside diameter of 152.4 mm, operating pressure of 8440 kPa,
and temperature of 420°C.
Maximum operating pressure for boiler drum - Answers 6500 kPa for a boiler drum made of SA-
515-70 steel with a ligament efficiency of 0.66, steam temperature of 280°C, inside diameter of
1.6 m, and thickness of 68.45 mm.
Minimum thickness for steam piping - Answers 6.31 mm (5.61 mm + tolerance) for steam
piping carrying steam at 4300 kPa gauge and 370°C, with a plain-end, 273.05 mm O.D., material
SA-335 P11.
Minimum thickness for seamless steel feedwater pipe - Answers 11.85 mm for a seamless
steel feedwater pipe of material SA-209, grade T1, with an outside diameter of 323.85 mm,
operating pressure of 5200 kPa, and temperature of 500°C.
Required thickness for superheater outlet header - Answers 54.35 mm for a superheater outlet
header operating at 500°C with a maximum allowable working pressure of 17 MPa, made of SA-
335-P7 with an outside diameter of 457.2 mm.
Maximum allowable working pressure for welded drum - Answers 5.305 MPa for a welded drum
with plates 25 mm thick, material SA-299, inside diameter of 988 mm, and joint efficiency of
100%, with steam temperature not exceeding 400°C.
Thickness of seamless dished head with manhole - Answers 18.37 mm for a seamless,
