Solutions
A draft fan located between the boiler and chimney is used in a
____ draft system Correct Answers Induced
A firetube boiler may be used _____ Correct Answers In high
or low pressure plants
A horizontal return tubular (HRT) boiler is a _____ boiler
Correct Answers Firetube
A low pressure steam boiler has a maximum allowable working
pressure (MAWP) of up to___ Correct Answers 15 psi.
A safe and efficient boiler plant should include ____ pumps.
Correct Answers One steam and one electric feedwater
A safety valve will _____ Correct Answers Prevent the boiler
from exceeding its MAWP
A sudden drop in boiler steam pressure without a corresponding
drop in boiler water temperature could result in ______ Correct
Answers A boiler explosion
According to the ASME code, boilers operating at 100psi or
over must have Correct Answers Two bottom blowdown valves
Air is mixed inside of the burner register in a(n) ____ gas
system Correct Answers High Pressure
, Any repairs to a safety valve should be done by the ______
Correct Answers Safety valve manufacturer or manufacturer's
authorized representative
Because of the large volume of water, the boiler most likely to
cause a boiler explosion is Correct Answers A firetube boiler
Boiler plates and staybolts are subjected to _____ stress Correct
Answers tensile
Boilers in battery equipped with manhole openings must have
___ according to the ASME code. Correct Answers Two main
steam stop valves.
Bottom blowdown lines on a watertube boiler are located on the
____ Correct Answers mud drum
Draft is defined as a difference in pressure that causes ____
Correct Answers Air or gases to flow
During boiler warmup, to remove any condensate trapped
between the two boiler stop valves the _____. Correct Answers
Free-blowing drain should be open
Gas leaks should be located and repaired by as Correct Answers
Gas company representative
If a quick-opening valve is used as a bottom blowdown valve, it
must be located ____. Correct Answers Between the boiler and
the slow-opening (screw type) valve