BOILER FUNDAMENTALS ( HERMY 2 )
CORRECT 100%
The low water fuel cutoff (LWCO) is a devices fitted to the boiler to shut off
the______. - ANSWERfuel supply to the burner when water level in the boiler is low
The safety valve test lever must not be used unless______. - ANSWERthe pressure
is about 75% of valve popping pressure
A siphon tube is necessary to____. - ANSWERkeep steam out a Bourdon tube
A test connection between the siphon tube and the boiler pressure gauge is needed
to______. - ANSWERallow equipment to be connected when checking the gauge for
accuracy
Try cocks on a water column are used to______. - ANSWERcheck the water level in
the boiler
The purpose of the spring in a safety valve is to_____. - ANSWERclose the valve
disc against the seat
A______ blowdown is performed to removed sludge from a boiler. -
ANSWERBottom
Boiler baffles are used _____. - ANSWERto direct the flue gases through the boiler
furnace
The float chamber of the low - water fuel cutoff (LWCO) is frequently blow to prevent
the______. - ANSWERfloat chamber from collecting sediment
The feedwater line must contain ____. - ANSWERa check a valve between a stop
valve and the rest of feedwater line
A bottom blowdown system can be equipped with slow - opening and quick -
opening valves with the quick-opening valve located_____. - ANSWERclosest to the
boiler and opened first
The function of a flame failure device is to shut off the ______. - ANSWERfuel
supply when the burner flame goes out
A stem boiler operating control is used to control the_____. - ANSWERsteam
pressure in the boiler