
High Pressure Boilers Chapter 12
Authored by Night Trees
Biology, Science, Specialty
University
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When taking over a shift, the boiler operator must first check the ___.
steam pressure
fuel oil supply
water level on all boilers
bottom blowdown valves
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The low-water fuel cutoff can be tested by blowing down the low-water fuel cutoff or by ___.
securing the feedwater and allowing the water level in the boiler to drop
closing the blowdown valves
modulating the firing rate
a hydrostatic test
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In order to prevent uneven expansion of the boiler on cold startup, the boiler must be ___.
warmed up as quickly as possible
thoroughly vented
heated using steam from outside sources
warmed up slowly
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During startup, the boiler vent should remain open until a pressure of approximately ___ is reached.
0.1 psi
15 psi
50% of the MAWP
75% of the MAWP
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A safety valve can be manually tested when the ___.
pressure is at least 25% of the MAWP
pressure is at least 75% of the MAWP
burner is going through the firing sequence
boiler is down for inspection
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Boilers equipped with a superheater must be protected during warm-up by ___.
keeping the superheater drain valve closed until the boiler is cut in on-line
keeping the superheater drain valve open until the boiler is cut in on-line
passing the feedwater through the superheater tubes
bypassing the superheater tubes
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Superheaters are prevented from overheated by the circulation of ___.
air
steam
water
gases of combustion
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