Unit 4 Boiler Operation Exam
Questions And Answers 100%
Correct
When should wet layup be used?
Select one:
a. When a boiler may be exposed to freezing conditions.
b. When a boiler is on standby.
c. For long term storage.
d. When desiccant is unavailable. - ANSWER-b
In a multiple boiler high pressure steam plant, when starting an entire system from
cold
Select one:
a. A small auxiliary heating boiler is used to warm the steam lines while the power
boilers are warming.
b. All the boilers are started and warmed at the same time.
c. The entire system warms and pressurizes as one boiler warms, except for the
boilers being left off line.
d. Boilers remaining off-line must have their boiler and header stop valves open,
and their non-return drain valves shut. - ANSWER-c
Although boilers have many different ignition systems, they all follow the same
sequence of steps. Which of the following is the third step?
Select one:
a. Main burner ignition
b. Pilot ignition
c. Post Purge
d. Pre-purge - ANSWER-a
, How often should the low water cut-off of a low pressure steam heating boiler be
blown off?
Select one:
a. Daily
b. Monthly
c. Twice per shift
d. Weekly - ANSWER-a
Deaerators often have low-level alarms and low-low level trips
Select one:
a. in case the boiler trips.
b. in case the boiler feedwater pumps trip.
c. in case the boiler feedwater valve fails open.
d. in case the condensate transfer pumps trip. - ANSWER-d
A well-planned PM system will
Select one:
a. ensure equipment longevity.
b. create less need for rounds and inspections.
c. will cover only the most critical plant equipment.
d. respond quickly to equipment breakdown. - ANSWER-a
When preparing to start a steam boiler with a fully modulating firing rate control,
set the manual-automatic switch to _________ and the flame control switch to the
__________ position.
Select one:
a. automatic, low-fire
b. manual, low-fire
c. manual, high-fire
d. manual, automatic - ANSWER-b
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