Boiler Exam Study Guide 1 Questions
And All Correct Answers.
15 psi - Answer A low pressure steam boiler has a maximum allowable working pressure (MAWP) of up
to ___.
One boiler horsepower - Answer The evaporation of 34.5 lb of water/hr from and at a feedwater
temperature of 212°F
through the tubes - Answer In a firetube boiler, the heat and gases of combustion pass ___.
in high or low pressure plants - Answer A firetube boiler may be used ___.
a firetube boiler - Answer Because of the large volume of water, the boiler most likely to cause a boiler
explosion is ___.
firetube - Answer A horizontal return tubular (HRT) boiler is a ___ boiler.
temperature - Answer As steam pressure in a boiler increases, there is a corresponding increase in the
___.
a boiler explosion - Answer A sudden drop in boiler steam pressure without a corresponding drop in
boiler water temperature could result in ___.
heating surface - Answer The part of a boiler that has the heat and gases of combustion on one side
and water on the other side is known as the ___.
thermal - Answer The comparison, or ratio, of heat supplied in fuel to heat absorbed by water is
defined as ___ efficiency.
,boiler heating surface - Answer Baffles are designed to direct the gases of combustion so that they
come into close contact with the ___.
stays - Answer The steam and water drum of watertube boilers is dished (concave) to eliminate the
need for ___.
waterwalls - Answer To increase the life of a furnace refractory, some watertube boilers are equipped
with ___.
high ceilings, less floor space, and the use of staybolts - Answer Vertical firetube boilers require ___.
around the tubes - Answer In a watertube boiler, the heat and gases of combustion pass ___.
firetube - Answer The ___ boiler has a large volume of water in relation to horsepower size.
a firetube boiler (high or low pressure) - Answer Stays and braces are needed to prevent bulging in ___.
watertube - Answer The ___ boiler was developed to provide steam at higher pressures.
watertube - Answer The mud drum is the lowest part of the water side of a(n) ___ boiler.
tensile - Answer Boiler plates and staybolts are subjected to ___ stress.
American Society of Mechanical Engineers (ASME) - Answer Safety valve connections must be
approved by the ___.
safety and efficiency - Answer Boiler fittings are necessary for ___.
safety valve - Answer The most important fitting on a boiler is the ___.
, safety valve - Answer To prevent failure from pressure over the MAWP, all steam boilers must be
equipped with at least one ___.
prevent the boiler from exceeding its MAWP - Answer A safety valve will ___.
pop open - Answer Safety valves are designed to ___.
before the main safety valves are set to open - Answer Superheater safety valves are set to open ___.
at least 75% of the popping pressure - Answer When testing a safety valve by hand, there must be ___.
safety valve manufacturer or manufacturer's authorized representative - Answer Any repairs to a safety
valve should be done by the ___.
qualified person who is familiar with the contruction and operation of a safety valve - Answer The
setting or adjusting of a safety valve should only be done by the ___.
an accumulation test is put on the boiler - Answer If it is necessary to test the relieving capacity of a
safety valve, ___.
pounds of steam per hour capable of discharging under a given pressure - Answer The relieving
capacity of a safety valve is measured in ___.
reduce turbulence in the gauge glass to get a more accurate reading of the water level in the boiler -
Answer The main purpose of a water column is to ___.
a secondary means of determining water level in a boiler. - Answer Try cocks are ___.
using the try cocks - Answer When replacing a broken gauge glass, the water level is checked by ___.
once a shift - Answer The water column and gauge glass should usually be blown down ___.
And All Correct Answers.
15 psi - Answer A low pressure steam boiler has a maximum allowable working pressure (MAWP) of up
to ___.
One boiler horsepower - Answer The evaporation of 34.5 lb of water/hr from and at a feedwater
temperature of 212°F
through the tubes - Answer In a firetube boiler, the heat and gases of combustion pass ___.
in high or low pressure plants - Answer A firetube boiler may be used ___.
a firetube boiler - Answer Because of the large volume of water, the boiler most likely to cause a boiler
explosion is ___.
firetube - Answer A horizontal return tubular (HRT) boiler is a ___ boiler.
temperature - Answer As steam pressure in a boiler increases, there is a corresponding increase in the
___.
a boiler explosion - Answer A sudden drop in boiler steam pressure without a corresponding drop in
boiler water temperature could result in ___.
heating surface - Answer The part of a boiler that has the heat and gases of combustion on one side
and water on the other side is known as the ___.
thermal - Answer The comparison, or ratio, of heat supplied in fuel to heat absorbed by water is
defined as ___ efficiency.
,boiler heating surface - Answer Baffles are designed to direct the gases of combustion so that they
come into close contact with the ___.
stays - Answer The steam and water drum of watertube boilers is dished (concave) to eliminate the
need for ___.
waterwalls - Answer To increase the life of a furnace refractory, some watertube boilers are equipped
with ___.
high ceilings, less floor space, and the use of staybolts - Answer Vertical firetube boilers require ___.
around the tubes - Answer In a watertube boiler, the heat and gases of combustion pass ___.
firetube - Answer The ___ boiler has a large volume of water in relation to horsepower size.
a firetube boiler (high or low pressure) - Answer Stays and braces are needed to prevent bulging in ___.
watertube - Answer The ___ boiler was developed to provide steam at higher pressures.
watertube - Answer The mud drum is the lowest part of the water side of a(n) ___ boiler.
tensile - Answer Boiler plates and staybolts are subjected to ___ stress.
American Society of Mechanical Engineers (ASME) - Answer Safety valve connections must be
approved by the ___.
safety and efficiency - Answer Boiler fittings are necessary for ___.
safety valve - Answer The most important fitting on a boiler is the ___.
, safety valve - Answer To prevent failure from pressure over the MAWP, all steam boilers must be
equipped with at least one ___.
prevent the boiler from exceeding its MAWP - Answer A safety valve will ___.
pop open - Answer Safety valves are designed to ___.
before the main safety valves are set to open - Answer Superheater safety valves are set to open ___.
at least 75% of the popping pressure - Answer When testing a safety valve by hand, there must be ___.
safety valve manufacturer or manufacturer's authorized representative - Answer Any repairs to a safety
valve should be done by the ___.
qualified person who is familiar with the contruction and operation of a safety valve - Answer The
setting or adjusting of a safety valve should only be done by the ___.
an accumulation test is put on the boiler - Answer If it is necessary to test the relieving capacity of a
safety valve, ___.
pounds of steam per hour capable of discharging under a given pressure - Answer The relieving
capacity of a safety valve is measured in ___.
reduce turbulence in the gauge glass to get a more accurate reading of the water level in the boiler -
Answer The main purpose of a water column is to ___.
a secondary means of determining water level in a boiler. - Answer Try cocks are ___.
using the try cocks - Answer When replacing a broken gauge glass, the water level is checked by ___.
once a shift - Answer The water column and gauge glass should usually be blown down ___.
