BOILER TEST QUESTIONS AND
CORRECT ANSWERS
the basic function of an automatic feedwater regulator on a boiler is to: - ans-maintain
proper water level
if one square inch column of water is one foot tall, how much does it weight? - ans-.433
lbs
where is the flame sensing device located on a boiler? - ans-front
cracking of the boiler can be caused by: - ans-caustic embrittlement
how would you test the operation of the flame failure device? - ans-by shutting off the
fuel supply
where are the combustible gases located in a water tube boiler? - ans-flowing around
the tubes
what are you preventing by increasing the pressure within a cold boiler gradually? - ans-
thermal shock
when performing a hydrostatic test, the pressure on the boiler should not exceed: - ans-
6% above 1.5 times the MAWP
a boiler operator log must be maintained in a boiler room containing over: - ans-100
horsepower
if a flame sensing device noticed that there is a flame failure, what device does it
secure? - ans-fuel solenoid valve
how is the air to gas ratio maintained within a boiler? - ans-all of the above: modulating
motor and linkage, air damper, butterfly valve
what type of draft had a fan between the boiler and the chimney - ans-induced
what is used to control alkalininty? - ans-caustic soda
, what is the best way to decide the blowdown frequency of a boiler? - ans-boiler water
analysis
what device is used to obtain sufficient static head for the returning condensate in a
two-pipe gravity return system? - ans-return trap
what is the maximum temperature a hot water boiler can be to qualify in NJ as low
pressure? - ans-250 F
what type of boiler is a HRT - ans-fire-tube
what is the purge cycle in a boiler meant to do - ans-remove combustible gases
which valve is allowed between the boiler and safety valve - ans-no valve
which is a common type of feedwater regulator in a low pressure plant - ans-pressure
sensitive device
when open, an OS&Y valve offers.......to the flow of steam - ans-no resistance
what section of the ASME code do hot water heating boilers fall under - ans-section IV
which describes the combustion chamber of a serpentine tube heating boiler? - ans-
located below the tubes
what should you do if you walked into a boiler room and the safety valves where popped
- ans-secure the fire at the burner
what letter stamp denotes a low pressure boiler - ans-H
in NJ how often should boilers over 100 hp be inspected internally and externally - ans-
annually
a manometer is calibrated in what units of measurement - ans-inches of water
bottom blowdown is best performed when the boiler is - ans-under light load
what is the main purpose of a check valve on the boiler feedwater line - ans-allow flow
in one direction only
the main function of a water column on a steam pressure boiler is to - ans-slow down
movement of water to get accurate reading of water level
a steam pressure gauge is designed to show steam calibrated in - ans-pounds per
square inch
CORRECT ANSWERS
the basic function of an automatic feedwater regulator on a boiler is to: - ans-maintain
proper water level
if one square inch column of water is one foot tall, how much does it weight? - ans-.433
lbs
where is the flame sensing device located on a boiler? - ans-front
cracking of the boiler can be caused by: - ans-caustic embrittlement
how would you test the operation of the flame failure device? - ans-by shutting off the
fuel supply
where are the combustible gases located in a water tube boiler? - ans-flowing around
the tubes
what are you preventing by increasing the pressure within a cold boiler gradually? - ans-
thermal shock
when performing a hydrostatic test, the pressure on the boiler should not exceed: - ans-
6% above 1.5 times the MAWP
a boiler operator log must be maintained in a boiler room containing over: - ans-100
horsepower
if a flame sensing device noticed that there is a flame failure, what device does it
secure? - ans-fuel solenoid valve
how is the air to gas ratio maintained within a boiler? - ans-all of the above: modulating
motor and linkage, air damper, butterfly valve
what type of draft had a fan between the boiler and the chimney - ans-induced
what is used to control alkalininty? - ans-caustic soda
, what is the best way to decide the blowdown frequency of a boiler? - ans-boiler water
analysis
what device is used to obtain sufficient static head for the returning condensate in a
two-pipe gravity return system? - ans-return trap
what is the maximum temperature a hot water boiler can be to qualify in NJ as low
pressure? - ans-250 F
what type of boiler is a HRT - ans-fire-tube
what is the purge cycle in a boiler meant to do - ans-remove combustible gases
which valve is allowed between the boiler and safety valve - ans-no valve
which is a common type of feedwater regulator in a low pressure plant - ans-pressure
sensitive device
when open, an OS&Y valve offers.......to the flow of steam - ans-no resistance
what section of the ASME code do hot water heating boilers fall under - ans-section IV
which describes the combustion chamber of a serpentine tube heating boiler? - ans-
located below the tubes
what should you do if you walked into a boiler room and the safety valves where popped
- ans-secure the fire at the burner
what letter stamp denotes a low pressure boiler - ans-H
in NJ how often should boilers over 100 hp be inspected internally and externally - ans-
annually
a manometer is calibrated in what units of measurement - ans-inches of water
bottom blowdown is best performed when the boiler is - ans-under light load
what is the main purpose of a check valve on the boiler feedwater line - ans-allow flow
in one direction only
the main function of a water column on a steam pressure boiler is to - ans-slow down
movement of water to get accurate reading of water level
a steam pressure gauge is designed to show steam calibrated in - ans-pounds per
square inch
