Power Engineering 3B1 Chapter 9 Exam Questions And Answers 100% Pass
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Course
Power Engineering
Institution
Power Engineering
Power Engineering 3B1 Chapter 9 Exam
Questions And Answers 100% Pass
All new boilers, and boilers which have been repaired on their pressure parts, require a
___________ to be performed upon them.
a. acidizing
b. de-scaling
c. hydrostatic test
d. refractory dry out
e. soot blowing - answerc...
Power Engineering 3B1 Chapter 9 Exam
Questions And Answers 100% Pass
All new boilers, and boilers which have been repaired on their pressure parts, require a
___________ to be performed upon them.
a. acidizing
b. de-scaling
c. hydrostatic test
d. refractory dry out
e. soot blowing - answer✔c
On small boilers, a hydrostatic test is done with:
a. compressed nitrogen
b. water pressure
c. steam pressure
d. compressed air
e. acetic acid - answer✔b
When a hydrostatic pressure test is done on a boiler, the pressure shall be under control at all
times, so that the required test pressure is never exceeded by more than:
a. 10%
b. 6%
c. 5%
d. 4%
e. 0% - answer✔c
All traces of oil or grease must be removed from a boiler by boiling out with.
a. a suitable acid
b. hot water
c. a suitable alkali
d. a suitable solvent
e. sodium sulphite and hydrazine - answer✔c
After construction of the boiler setting, the refractories will contain a considerable amount of
moisture. Referring to this situation, which of the following statements are correct?
1. The refractories should be dried out as fast as possible
2. The refractories should be dried slowly
3. If the refractories are dried too slowly, large cracks will appear
4. If the refractories are dried too quickly, the refractories will crack
a. 1,3
b. 2,4
c. 1
d. 2
e. 3 - answer✔b
An alkaline boil out is used on a boiler:
a. When the boiler has had oil contamination
b. Before overhauls
c. After an acid clean
d. Before returning the boiler to service after an overhaul
e. after an acid clean - answer✔a
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