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MN Boiler Exam 2023 /226 Questions And Answers (A+)
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MN Boiler Exam 2023 /226Questions And Answers (A+)
Quiz :Cast Iron Sectional Boiler - √Answer :Like Bread,
sections in between are intermediate.
Held together with push nipples and stay bolts.
No special foundation required
Expandable (can add more centers to increase heating
capacity)
Boiler trim mounted on end sections
Disadvantage: Always low pressure
Advantage: corrosion resistant
Quiz :Firetube boiler - √Answer :used for heating and process
Gas/heat of combustion on one side and water on outside.
Quiz :Horizontal Return Tubular - √Answer :Type of firetube
Drum supported by Lugs and Slings
Old construction, not efficient because of *External furnace*
2 pass construction
Quiz :Bridgewall - √Answer :Baffle inside HRT boiler furnace to
direct flow of combusting gases for greatest efficiency
Quiz :Scotch Marine - √Answer :Most common, most efficient
Firetube boiler.
Comes in 2, 3, or 4 pass construction
Round tube furnace usually corrugated like culvert under road.
*Completely internal furnace*
Quiz :Dry Back Scotch Marine - √Answer :easy to clean and
maintain, less costly, less efficient
Quiz :Wet Back Scotch Marine - √Answer :hard to clean and
service due to limited access, more efficient, more costly
,Quiz :Fire Box - √Answer :almost like Scotch Marine but fire
box instead of corrugated. Can burn oil, gas, or solid materials
Quiz :Locomotive - √Answer :Type of firetube used in trains.
Variation of HRT, partially enclosed furnace
Quiz :Vertical Fire Tube - √Answer :Burner on bottom, could
be on top in case of Fultons
Quiz :Types of Water Tube Boilers - √Answer :Straight Tube,
Bent Tube, Flex tube, and Membrane tube
Quiz :Water Tube Boiler - √Answer :package boilers made in
factory, add water/electric and ready to go. Process and power
generation.
Quiz :Advantage of Water Tubes over Fire Tubes -
√Answer :WTB contains less water for same horsepower
output of FTB. Most of energy is contained in water not steam.
Recovery rate is greater than fire tube because of less water.
(Less energy to heat smaller mass)
Quiz :3 Types of Industrial Water Tubes - √Answer :A, O, and
D (most efficient, most common)
Quiz :Electric Boiler - √Answer :Electrode (spark plug)
electrical arc or fusion, Resistance coil
Quiz :1 boiler Horsepower - √Answer :=746 watts = 33,478.8
Btu output / hr
=10 square feet of heating surface for conventional boiler
=5 square ft of heating surface for steam coil generator
=10 KW electric
Quiz :Boiler trim - √Answer :Valves and components directly
attached to boiler necessary for it to run. (ex. water column,
, gauge glass vent, bottom blowdown, relief valve, steam safety
valve)
Quiz :Boiler Accessories - √Answer :components necessary
for boiler to run but NOT attached to boiler (Feed pump, fuel
pump, condensate tank and pump, surge tank, Deaerator)
Quiz :Stays - √Answer :Support boiler in areas not supported
by tubes. can be vertical, horizontal, and diagonal
Quiz :Boiler Pass - √Answer :where heat of combustion travels
length of furnace or boiler tubes
Quiz :Baffle - √Answer :used in all boilers (fireside and
waterside) to direct flow for greatest efficiency
Quiz :How is piping measured vs. boiler tubes -
√Answer :piping is measured based on inside diameter, while
boiler tubes are measured by outside diameter
Quiz :Dry Pipe - √Answer :Pipe running along the top of steam
space in which slots are cut in top or side for purpose of
admitting only dry steam to line. One has blank ending, other is
connected to steam outlet. Drain holes drilled on bottom.
Quiz :What is the point of a dry pipe - √Answer :to aid in
removal of moisture from steam as it leaves the steam drum
Quiz :what kind of stamp must a company posses to to weld on
boilers - √Answer :R stamp
Quiz :ASME - √Answer :American Society of Mechanical
Engineers
Quiz :According to ASME, how many valves must be on the
main steam line of a high pressure steam boiler? - √Answer :2.
Jurisdiction ends after second.
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