4th Class Power Engineering Part B Unit 4 - Boiler Plant Operation Questions With Complete Solutions
Accumulation Test - (ANSWER)A method of determining boiler safety valve capacity, by shutting off all
steam discharge outlets from the boiler, and forcing the fires to the maximum.
Aqua-Stat - (ANSWER)A hot water boiler fitting that starts and stops the temperature of the water. The
term "AQUASTATTM is a trademark of burner by sensing the Honeywell International, Inc., originally
filed in 1923.
Ash - (ANSWER)The non-combustible product of combustion left from the burning of solid fuel.
Atmospheric Burner - (ANSWER)A device for burning gaseous fuels, where combustion air is delivered to
the burner at atmospheric pressure, with no additional mechanical means.
Blowdown - (ANSWER)With regard to boiler waterside operations, the continuous removal of a portion
of boiler water for the purpose of reducing dissolved solids concentration.
Blowoff - (ANSWER)With regard to boiler waterside operations, the intermittent removal of a portion of
boiler water to discharge sludge.
Boil Out - (ANSWER)To remove greasy contaminants from the waterside of a boiler by first adding
caustic or basic chemicals to the boiler water and then adding heat.
Carryover - (ANSWER)The entrainment of water droplets in the steam leaving the boiler drum.
Coalescing Filter - (ANSWER)A filter used to remove water and oil aerosols from compressed air, by
causing smaller particles to come together to form larger particles.
Combustion Air Opening - (ANSWER)An opening from a mechanical room where combustion equipment
is housed that provides the fresh air required for satisfactory combustion of a fuel, including excess air.
Condensate - (ANSWER)Fluid formed when steam is cooled to below its saturation temperature.
, 4th Class Power Engineering Part B Unit 4 - Boiler Plant Operation Questions With Complete Solutions
Continuous Blowdown (CBD) - (ANSWER)The continuous removal of concentrated boiler water from a
boiler. This reduces the total solids concentration in the remaining water
Cutting In - (ANSWER)The activity of adding a previously non-operating piece of equipment, such as a
boiler, into a system that is already in operation.
Day Tank - (ANSWER)A local supply of fuel oil for boilers, emergency generators, or other oil-fired
equipment.
Dew Point - (ANSWER)The temperature at which the water vapour in the air is saturated; the
temperature at which water vapour begins to condense out of the air.
Dilution Air - (ANSWER)diverter, or draft regulator, to cool combustion products. The ambient air that is
admitted to a venting system at the draft hood, draft
Draft Fan - (ANSWER)
Day Tank - (ANSWER)A local supply of fuel oil for boilers, emergency generators, or other oil-fired
equipment.
Dew Point - (ANSWER)The temperature at which the water vapour in the air is saturated; the
temperature at which water vapour begins to condense out of the air.
Dilution Air - (ANSWER)The ambient air that is admitted to a venting system at the draft hood, draft
diverter, or draft regulator, to cool combustion products.
Draft Fan - (ANSWER)A mechanically driven fan used to either blow combustion air into a furnace, or to
draw combustion gases from a furnace and expel them out the chimney
Draft Hood - (ANSWER)A draft control device installed on natural draft appliances.
Accumulation Test - (ANSWER)A method of determining boiler safety valve capacity, by shutting off all
steam discharge outlets from the boiler, and forcing the fires to the maximum.
Aqua-Stat - (ANSWER)A hot water boiler fitting that starts and stops the temperature of the water. The
term "AQUASTATTM is a trademark of burner by sensing the Honeywell International, Inc., originally
filed in 1923.
Ash - (ANSWER)The non-combustible product of combustion left from the burning of solid fuel.
Atmospheric Burner - (ANSWER)A device for burning gaseous fuels, where combustion air is delivered to
the burner at atmospheric pressure, with no additional mechanical means.
Blowdown - (ANSWER)With regard to boiler waterside operations, the continuous removal of a portion
of boiler water for the purpose of reducing dissolved solids concentration.
Blowoff - (ANSWER)With regard to boiler waterside operations, the intermittent removal of a portion of
boiler water to discharge sludge.
Boil Out - (ANSWER)To remove greasy contaminants from the waterside of a boiler by first adding
caustic or basic chemicals to the boiler water and then adding heat.
Carryover - (ANSWER)The entrainment of water droplets in the steam leaving the boiler drum.
Coalescing Filter - (ANSWER)A filter used to remove water and oil aerosols from compressed air, by
causing smaller particles to come together to form larger particles.
Combustion Air Opening - (ANSWER)An opening from a mechanical room where combustion equipment
is housed that provides the fresh air required for satisfactory combustion of a fuel, including excess air.
Condensate - (ANSWER)Fluid formed when steam is cooled to below its saturation temperature.
, 4th Class Power Engineering Part B Unit 4 - Boiler Plant Operation Questions With Complete Solutions
Continuous Blowdown (CBD) - (ANSWER)The continuous removal of concentrated boiler water from a
boiler. This reduces the total solids concentration in the remaining water
Cutting In - (ANSWER)The activity of adding a previously non-operating piece of equipment, such as a
boiler, into a system that is already in operation.
Day Tank - (ANSWER)A local supply of fuel oil for boilers, emergency generators, or other oil-fired
equipment.
Dew Point - (ANSWER)The temperature at which the water vapour in the air is saturated; the
temperature at which water vapour begins to condense out of the air.
Dilution Air - (ANSWER)diverter, or draft regulator, to cool combustion products. The ambient air that is
admitted to a venting system at the draft hood, draft
Draft Fan - (ANSWER)
Day Tank - (ANSWER)A local supply of fuel oil for boilers, emergency generators, or other oil-fired
equipment.
Dew Point - (ANSWER)The temperature at which the water vapour in the air is saturated; the
temperature at which water vapour begins to condense out of the air.
Dilution Air - (ANSWER)The ambient air that is admitted to a venting system at the draft hood, draft
diverter, or draft regulator, to cool combustion products.
Draft Fan - (ANSWER)A mechanically driven fan used to either blow combustion air into a furnace, or to
draw combustion gases from a furnace and expel them out the chimney
Draft Hood - (ANSWER)A draft control device installed on natural draft appliances.
