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1. for the purpose of rating boiler 10 Sq. Ft. Heating Surface
horsepower for an Engineers
licence only, how many square
feet of boiler surface shall be
equivalent to one boiler horse-
power on a boiler?
2. What is meant by the term Low boilers operating at a steam or other vapor pressure of 15
Pressure Boiler? psig. or less, or a hot water or other liquid boiler in which the
pressure does not exceed 160 psig. Or a temperature of 250
f°.
3. A person holding a current High and low pressure boiler not to exceed a total of 50
state of Minnesota Special En- horsepower, or a shift engineer in a 100 Horsepower plant.
gineers Licence could be in
charge of or a shift engineer in
what size plants(s)?
4. Special Engineer may serve as In any plant regardless of size under the direct supervision of
apprentice of what size wa- the properly licensed engineer.
ter/liquid or steam/vapor boil-
er?
5. the purpose of the low water Shut off the burner when a low water condition exists.
cut out on a steam-or hot wa-
ter boiler is to what?
6. The valve or valves that must Safety valve and/or an ASME approved safety relief valve.
relive all excess pressure on a
steam or hot water boiler are
what?
7. Steam boiler.
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, MN Special Engineers Practice Exam
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A Tri indicator could be found
on a:
8. A Tri indicator would inform The AMOUNT of water, the LEVEL of water, and if it is LOW on
the boiler operator of what? water.
9. what is the destructive force in The instant release of energy stored in the water as heat.
a steam or hot water boiler ex-
plosion?
10. an ASME approved safety relief Steam first then hot water.
valve used on a hot water boil-
er is tested at the factory on
what?
11. Some of the things you could Low water cut off, safety valve or safety relief valve, pressure
find on a steam or hot water gauge.
boiler are what?
12. What devices would only be Steam pressure gauge, tricocks, pressuretrols.
found on a steam boiler?
13. An expansion tank or compres- Hot water boiler.
sion tank would be used whit a
what?
14. What is the purpose of the ex- To provide for expansion and contraction of the water volume
pansion tank? as its temperature varies .
15. on a hot water boiler what is To vent dirty water.
the purpose of the vent valve?
16. Have the valve repaired or replaced.
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