P99 LOW PRESSURE BOILERS CH 7 EXAM EXPECTED QUESTIONS AND THEIR RELEVANT ANSWERS

P99 LOW PRESSURE BOILERS
CH 7 EXAM EXPECTED QUESTIONS
AND THEIR RELEVANT ANSWERS

Boiler water treatment is required for makeup water
introduced to the boiler.
True
Slug feeding is used to generate foam to prevent
carryover.
False
Dissolved solids are impurities such as calcium,
silica, and iron dissolved in solution.
True
Priming and carryover can lead to water hammer and
possible pipe rupture.
True
Oxygen in the boiler water is used to remove non-
adhering sludge.
False
Water that contains a small quantity of minerals is
hard water.
False
Chemicals added to the boiler water change scale-
forming salts into non-adhering sludge.
True
Scale acts as an insulator and slows down the
transfer of heat to the water.
True

, Sludge is removed from the boiler using the surface
blowdown valve.
False
A boil-out procedure is performed when a new boiler
is installed.
True
Well water requires chemical treatment but city water
does not.
False
The bypass feeder is located on the main steam
header to provide efficient feeding.
True
Priming and carryover can be caused by opening the
main steam valve too quickly.
True
Corrosion is the accumulation of sludge on boiler
heating surfaces.
False
Fuel oil contamination of the boiler water can be
prevented by dumping all fuel oil heater returns to
waste.
True
Scale and sediment cause pitting of the boiler metal
surfaces.
False
Sodium sulfide is an oxygen scavenger that is
commonly used to treat boiler water.
True
Automatic valves are used to control the amount of
chemicals added by the bypass feeder.
False