Terms in this set (100)
Answer : To prevent the boiler pressure from forcing the boiler water Allows
2. What is the function of the check flow in only one direction . back into a feedwater tank or deaerator when
valve ? the pump shuts off .
Above 15 PSI
8. A high - pressure boiler is one
which generates steam or vapor at
pressure of above
Answer : Incomplete Combustion
10. What condition will cause smoke
and soot resulting in a loss of heat
transfer efficiency and the creation of
dangerous carbon monoxide gases ?
? Answer : Into a Non - Adhering Sludge
12. A Residue formed in a boiler by
adding feedwater chemicals to the
boiler water to prevent the scale from
forming on the tubes and turn the
scale forming salts
Answer surrounds the tubes
18. In a firetube boiler the gases of
combustion flow through the tubes
and the boiler water
, Answer : True
25. A Safety Relief Valve should open
when the boiler pressure reaches the
Maximum Allowable Working
Pressure to prevent the boiler from an
overpressure condition .
Answer : Safety Relief Valve
28. What device is considered to be
the most important safety device on a
high - pressure steam boiler .
Answer : Low - water Fuel Cut - off
30. A safety device used to shut off
the fuel to the boiler when the water
level falls below a safe level .
Answer : True
33. You should do a manual at a
pressure of at least 75 % the set lift
test of the safety relief valve by
testing it pressure of when the boiler
is operating the valve .
or Boiler Operations o Answer : The Manufacturer's Recommendations ing
34. The Boiler Operator should to holler and considered Manual
understand Pressure Steam Boiler .
When in doubt , the how the Boiler
Controls and Safety Devices operate
on a High - operator should check ?
Answer : Economizer
36. A device that uses waste heat
from the gases of combustion to heat
the the feedwater and increase the
efficiency of the boiler ?
, Answer : Check for the correct water level
45. Regardless of the type of fuel
being used , before lighting a boiler
during a cold start - up , the operator
must first :
Answer : Steam Temperature and the temperature of the boiler water
46. As boiler steam pressure
increases , there is a corresponding
increase in the :
Answer : Forced Draft
54. Mechanical draft produced by a
fan supplying or forcing air for
combustion into the furnace ?
Answer : Pre - Purge
57. The passing of air through a
furnace prior to light - off to remove
any fuels or fuel vapors , thereby
preventing a furnace explosion .
Water Hammer
62. A dangerous banging condition
that is caused by steam and water
mixing in a steam line and will cause
damage to Pipe , Valves , and
Process the Equipment ?
Answer : The Boiler should be laid up Dry by placing Desiccant in both the
65. When removing a boiler from Fireside & the Waterside . The Boiler can also be laid up Dry using a
service for an extended period of time Nitrogen Blanket .
the boiler should be ?
Answer : To prevent the boiler pressure from forcing the boiler water Allows
2. What is the function of the check flow in only one direction . back into a feedwater tank or deaerator when
valve ? the pump shuts off .
Above 15 PSI
8. A high - pressure boiler is one
which generates steam or vapor at
pressure of above
Answer : Incomplete Combustion
10. What condition will cause smoke
and soot resulting in a loss of heat
transfer efficiency and the creation of
dangerous carbon monoxide gases ?
? Answer : Into a Non - Adhering Sludge
12. A Residue formed in a boiler by
adding feedwater chemicals to the
boiler water to prevent the scale from
forming on the tubes and turn the
scale forming salts
Answer surrounds the tubes
18. In a firetube boiler the gases of
combustion flow through the tubes
and the boiler water
, Answer : True
25. A Safety Relief Valve should open
when the boiler pressure reaches the
Maximum Allowable Working
Pressure to prevent the boiler from an
overpressure condition .
Answer : Safety Relief Valve
28. What device is considered to be
the most important safety device on a
high - pressure steam boiler .
Answer : Low - water Fuel Cut - off
30. A safety device used to shut off
the fuel to the boiler when the water
level falls below a safe level .
Answer : True
33. You should do a manual at a
pressure of at least 75 % the set lift
test of the safety relief valve by
testing it pressure of when the boiler
is operating the valve .
or Boiler Operations o Answer : The Manufacturer's Recommendations ing
34. The Boiler Operator should to holler and considered Manual
understand Pressure Steam Boiler .
When in doubt , the how the Boiler
Controls and Safety Devices operate
on a High - operator should check ?
Answer : Economizer
36. A device that uses waste heat
from the gases of combustion to heat
the the feedwater and increase the
efficiency of the boiler ?
, Answer : Check for the correct water level
45. Regardless of the type of fuel
being used , before lighting a boiler
during a cold start - up , the operator
must first :
Answer : Steam Temperature and the temperature of the boiler water
46. As boiler steam pressure
increases , there is a corresponding
increase in the :
Answer : Forced Draft
54. Mechanical draft produced by a
fan supplying or forcing air for
combustion into the furnace ?
Answer : Pre - Purge
57. The passing of air through a
furnace prior to light - off to remove
any fuels or fuel vapors , thereby
preventing a furnace explosion .
Water Hammer
62. A dangerous banging condition
that is caused by steam and water
mixing in a steam line and will cause
damage to Pipe , Valves , and
Process the Equipment ?
Answer : The Boiler should be laid up Dry by placing Desiccant in both the
65. When removing a boiler from Fireside & the Waterside . The Boiler can also be laid up Dry using a
service for an extended period of time Nitrogen Blanket .
the boiler should be ?
