LA Steam Engineer
A desuperheater that is installed in a boiler is used to control.. ✔✔ correct answer Super heated
steam temperature
Economizers are finned to.. ✔✔ correct answer Increase the rate of heat for heat transfer
The heat transfer taking place in a surface condenser is accomplished mainly by.. ✔✔ correct answer
Conduction
An unfired pressure vessel which is used to transfer heat from one substance to another is called..
✔✔ correct answer Feed water heater, Evaporator and Oil Cooler
Boiler economizers are primarily used for.. ✔✔ correct answer Recovery heat from flue gas
The main purpose of the deaerator is to.. ✔✔ correct answer Eliminate non-condensable gases
Superheated steam is more efficient because.. ✔✔ correct answer Temperature & Total heat
content are increased
A spear boiler feed water pump is equipped with a check valve in the discharge line to... ✔✔ correct
answer Permit fast start up by leaving the discharge valve open
Excessive fireside deposits on heating surfaces of a uncontrolled super heated boiler would be
indicated by... ✔✔ correct answer Decreased super heater outlet temperature
Why is the super heater safety valve set to release before the drum safety? ✔✔ correct answer To
ensure flow through the super heater
What is the purpose of a steam trap? ✔✔ correct answer To drain water and air
A steam trap utilizes flash steam to open but what comes after for the closing operation? ✔✔
correct answer Impulse
Pitting in suction areas of a bronze impeller in centrifugal pumps is usually caused by? ✔✔ correct
answer (Best answer) Cavitation or (Second Best) Corrosion
, LA Steam Engineer
What type of pump has no moving parts? ✔✔ correct answer Jet pump
Centrifugal boiler feed water pumps are usually equipped with? ✔✔ correct answer Bypass valves
Which condition is the probable cause of centrifugal pump failure to deliver water when first started?
✔✔ correct answer Pump is not primed
Low pressure from metering or proportioning pumps may be caused by? ✔✔ correct answer Rapid
wear on plunger
If a centrifugal pump that operates with suction lift becomes air bound you should? ✔✔ correct
answer Reprime the pump
An important consideration in the prevention of carryover in a boiler is to? ✔✔ correct answer
Control water level
As alkalinity of boiler water increases the water inside the boiler becomes increasingly _________?
✔✔ correct answer Soft
The residue created from chemically treated feed water remains in the boiler thus increasing the
need for? ✔✔ correct answer Boiler Blowdown
Grooving and pitting is caused by? ✔✔ correct answer Dissolved O2 and CO2
What test is used to detect corrosive boiler water? ✔✔ correct answer Hardness Test
Chemical which would not be used for the purpose of regeneration of softner and dematerialize is?
✔✔ correct answer Sulfuric acid
Why are continuous blow downs necessary on high make up? ✔✔ correct answer To maintain
proper dissolved boiler water solids
Steam seperation is less effective when there is? ✔✔ correct answer High water level in the drum
A desuperheater that is installed in a boiler is used to control.. ✔✔ correct answer Super heated
steam temperature
Economizers are finned to.. ✔✔ correct answer Increase the rate of heat for heat transfer
The heat transfer taking place in a surface condenser is accomplished mainly by.. ✔✔ correct answer
Conduction
An unfired pressure vessel which is used to transfer heat from one substance to another is called..
✔✔ correct answer Feed water heater, Evaporator and Oil Cooler
Boiler economizers are primarily used for.. ✔✔ correct answer Recovery heat from flue gas
The main purpose of the deaerator is to.. ✔✔ correct answer Eliminate non-condensable gases
Superheated steam is more efficient because.. ✔✔ correct answer Temperature & Total heat
content are increased
A spear boiler feed water pump is equipped with a check valve in the discharge line to... ✔✔ correct
answer Permit fast start up by leaving the discharge valve open
Excessive fireside deposits on heating surfaces of a uncontrolled super heated boiler would be
indicated by... ✔✔ correct answer Decreased super heater outlet temperature
Why is the super heater safety valve set to release before the drum safety? ✔✔ correct answer To
ensure flow through the super heater
What is the purpose of a steam trap? ✔✔ correct answer To drain water and air
A steam trap utilizes flash steam to open but what comes after for the closing operation? ✔✔
correct answer Impulse
Pitting in suction areas of a bronze impeller in centrifugal pumps is usually caused by? ✔✔ correct
answer (Best answer) Cavitation or (Second Best) Corrosion
, LA Steam Engineer
What type of pump has no moving parts? ✔✔ correct answer Jet pump
Centrifugal boiler feed water pumps are usually equipped with? ✔✔ correct answer Bypass valves
Which condition is the probable cause of centrifugal pump failure to deliver water when first started?
✔✔ correct answer Pump is not primed
Low pressure from metering or proportioning pumps may be caused by? ✔✔ correct answer Rapid
wear on plunger
If a centrifugal pump that operates with suction lift becomes air bound you should? ✔✔ correct
answer Reprime the pump
An important consideration in the prevention of carryover in a boiler is to? ✔✔ correct answer
Control water level
As alkalinity of boiler water increases the water inside the boiler becomes increasingly _________?
✔✔ correct answer Soft
The residue created from chemically treated feed water remains in the boiler thus increasing the
need for? ✔✔ correct answer Boiler Blowdown
Grooving and pitting is caused by? ✔✔ correct answer Dissolved O2 and CO2
What test is used to detect corrosive boiler water? ✔✔ correct answer Hardness Test
Chemical which would not be used for the purpose of regeneration of softner and dematerialize is?
✔✔ correct answer Sulfuric acid
Why are continuous blow downs necessary on high make up? ✔✔ correct answer To maintain
proper dissolved boiler water solids
Steam seperation is less effective when there is? ✔✔ correct answer High water level in the drum
