SPECIAL BOILERS STUDY SET
QUESTIONS & ANSWERS 100%
CORRECT!!
Which formula is used to determine the efficiency of the boiler based on heat
absorption? - ANSWEROutput divided by input
How many ways can heat be transferred? - ANSWERThree (Conduction,
Convection, Radiation)
How many types of heat are there? - ANSWERThree
How may different types of draft are there? - ANSWERThree
How many different types of boilers are there? - ANSWERThree
How many different types of low water fuel cut are in general use? - ANSWERThree
How many different types of air are there? - ANSWERThree
A (RPZ) reduced pressure zone or back flow preventer prevents contaminated water
from entering the domestic water supply. - ANSWERTRUE
Boilers and boiler fittings used in the state of Minnesota must be constructed to what
code? - ANSWERA.S.M.E
What is the unit called that controls the starting and stopping of the burner by
sensing the temperature of the water in a hot water boiler? - ANSWERAqua Stat
Heat can't be transferred in three ways and they are: - ANSWERConduction,
Convection, Radiation
The first sequence in the series of automatic burner controls is: - ANSWERPurging
Air that is mixed with the fuel at / or in the burner is called: - ANSWERPrimary Air
Can a low water condition occur in a hot water heating type boiler? - ANSWERYes,
for numerous reasons
Other that a safety relief valve what other safety device should be installed on a hot
water heating boiler? - ANSWERLow water fuel cut off
What is the internal resistance to the flow of fuel oil? - ANSWERViscosity
Each boiler in a battery (piped together sharing the same common header) must
have: - ANSWERA main steam stop
, What removes air from a hot water boiler system? - ANSWERAir Control
When a hydro static test of a boiler exceeds the maximum allowable working
pressure each safety valve, if left attached to the boiler, should: - ANSWERHave its
valve disc held to its seat by means of testing testing clamp or "gag"
Why is a safety valve sealed? - ANSWERTo prevent tampering with pressure and
capacity
Oxygen in a boiler water can cause: - ANSWERCorrosion
In a steam boiler system, the unit that turns the burner on and off based on steam
pressure is the - ANSWERPressure control
If water in the gauge glass is not visible because of failure of the feed water supply,
what should be done? - ANSWERShut off the fuel to the burner and secure the
boiler
What two scales does a pressure control have? - ANSWERCut in pressure and
differential pressure
What is the minimum size bottom blowdown line used on a mini or miniature boiler? -
ANSWER1/2 inch
What is the minimum size drain required on a water column? - ANSWER3/4 inch
What conditions are necessary to cause a furnace explosion? -
ANSWERAccumulation of unburned fuel, oxygen and an ignition source
The low water cut out should be tested: - ANSWERDaily
Can high pressure safety valve be used on the same boiler for low pressure? -
ANSWERCannot be used
Gauge pressure plus 14.7 psi is called what? - ANSWERAbsolute pressure
The unit that shuts off the burner in the event of low water is: - ANSWERLow water
fuel cut out
The evaporation of 34.5 pounds of water per hour from and at a temperature of 212 f
is defined as: - ANSWEROne boiler horsepower
When a safety valve opens and closes rapidly it is referred to as: -
ANSWERChattering
Furnace explosions are caused by a build up of combustible gases, or vapors in the
combustion chamber, what is the term used to remedy this condition? -
ANSWERPurging
QUESTIONS & ANSWERS 100%
CORRECT!!
Which formula is used to determine the efficiency of the boiler based on heat
absorption? - ANSWEROutput divided by input
How many ways can heat be transferred? - ANSWERThree (Conduction,
Convection, Radiation)
How many types of heat are there? - ANSWERThree
How may different types of draft are there? - ANSWERThree
How many different types of boilers are there? - ANSWERThree
How many different types of low water fuel cut are in general use? - ANSWERThree
How many different types of air are there? - ANSWERThree
A (RPZ) reduced pressure zone or back flow preventer prevents contaminated water
from entering the domestic water supply. - ANSWERTRUE
Boilers and boiler fittings used in the state of Minnesota must be constructed to what
code? - ANSWERA.S.M.E
What is the unit called that controls the starting and stopping of the burner by
sensing the temperature of the water in a hot water boiler? - ANSWERAqua Stat
Heat can't be transferred in three ways and they are: - ANSWERConduction,
Convection, Radiation
The first sequence in the series of automatic burner controls is: - ANSWERPurging
Air that is mixed with the fuel at / or in the burner is called: - ANSWERPrimary Air
Can a low water condition occur in a hot water heating type boiler? - ANSWERYes,
for numerous reasons
Other that a safety relief valve what other safety device should be installed on a hot
water heating boiler? - ANSWERLow water fuel cut off
What is the internal resistance to the flow of fuel oil? - ANSWERViscosity
Each boiler in a battery (piped together sharing the same common header) must
have: - ANSWERA main steam stop
, What removes air from a hot water boiler system? - ANSWERAir Control
When a hydro static test of a boiler exceeds the maximum allowable working
pressure each safety valve, if left attached to the boiler, should: - ANSWERHave its
valve disc held to its seat by means of testing testing clamp or "gag"
Why is a safety valve sealed? - ANSWERTo prevent tampering with pressure and
capacity
Oxygen in a boiler water can cause: - ANSWERCorrosion
In a steam boiler system, the unit that turns the burner on and off based on steam
pressure is the - ANSWERPressure control
If water in the gauge glass is not visible because of failure of the feed water supply,
what should be done? - ANSWERShut off the fuel to the burner and secure the
boiler
What two scales does a pressure control have? - ANSWERCut in pressure and
differential pressure
What is the minimum size bottom blowdown line used on a mini or miniature boiler? -
ANSWER1/2 inch
What is the minimum size drain required on a water column? - ANSWER3/4 inch
What conditions are necessary to cause a furnace explosion? -
ANSWERAccumulation of unburned fuel, oxygen and an ignition source
The low water cut out should be tested: - ANSWERDaily
Can high pressure safety valve be used on the same boiler for low pressure? -
ANSWERCannot be used
Gauge pressure plus 14.7 psi is called what? - ANSWERAbsolute pressure
The unit that shuts off the burner in the event of low water is: - ANSWERLow water
fuel cut out
The evaporation of 34.5 pounds of water per hour from and at a temperature of 212 f
is defined as: - ANSWEROne boiler horsepower
When a safety valve opens and closes rapidly it is referred to as: -
ANSWERChattering
Furnace explosions are caused by a build up of combustible gases, or vapors in the
combustion chamber, what is the term used to remedy this condition? -
ANSWERPurging
