Boilers are redundantly safe due to the safety controls in it and most accidents are due to human error. Just how ready are you to tackle the upcoming exam on boilers? Take up the Boiler Operator 3rd-test from 1-2 of the Blue Book and refresh your memory on what we covered. All the best!
14.7
185.3
214.7
228.7
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10
12
12.5
14.7
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Steam turbine
Reciprocating steam engine
Feedwater heater
Air compressor
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Supersaturated
Desuperheated
Superheated
Saturated
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Heat air for combustion
Increase steam temperature
Add heat to feedwater
Keep tubes clean
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Scotch marine
Cast iron
Firetube
Watertube
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Rapid circulation of water
Scale on tubes
A high water level
A low firing rate
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Scale
Pitting
Channeling
Plugging of lines
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Centrifugal
Recriprocating
Jet
Vacuum
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6,000
60,000
600,000
6,000,000
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Remove surface scum
Test for water level
Test safety valves
Discharge sludge and sediment
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3/4
1
1 1/4
1 1/2
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1/2
3/4
1
1 1/4
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1
1 1/2
2
2 1/2
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Steam trap
Siphon
Check valve
Bypass
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Water level in each boiler
Fuel supply
Flame condition
Feedwater pumps
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One safety valve of the proper size
One safety valve with a rupture disc
Two lever type safety valves
Two or more safety valves
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The burner is on low fire
The steam pressure is too low
Dirty heating surfaces
High combustion efficiency
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Common blowdown lines
Manhole openings
Handhole openings
Continuous blowdown lines
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Shut the valve to the steam side of the gauge glass
Shut the valve to the water side of the gauge glass
Blow down the gauge glass
Blow down the water column
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At the NOWL
In the mud drum
In the flash tank
In the steam and water drum well below the NOWL
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52
148
168
176
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Superheated steam
Poor efficiency
Saturated steam
Normal operation
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Inches of water
Psig
Psia
None of the above
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Not change
Be raised
Be lowered
Raise until 212 *F
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Alkaline
Normal
Soft
Hard
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Filtered
Mixed with CO2
Preheated
Dried
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Induced
Forced
Forced-induced
Natural forced
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Before putting the steam turbine on-line
Daily
Weekly
Monthly
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Incomplete combustion
Carryover of oxygen
Low combustion efficiency
High combustion efficiency
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Prevent priming
Turn scale forming salts to a nonadhering sludge
Change scale forming salts to an adhering sludge
Prevent water hammer
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Check valve
Stop valve
Loop seal or internal overflow
Atmospheric relief
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3650
3700
3750
3960
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Steam header
Steam drum
Auxiliary line
Pressure reducing station
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Drain superheater lines
Drain soot blower lines
Secure all burners
Decrease the draft
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Increases boiler efficiency
Decreases boiler efficiency
Decreases gas temperature
Protects tubes from excessive heat
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Under
On top of
Under and on top of
None of the above
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1
1 1/4
1 1/2
1 3/4
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Washing down with water
Air or water driven turbines
Wire brushes
Boiling chemical solution
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Decrease feedwater
Increase firing rate
Lower firing rate and increase feedwater
Secure fires
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Remove gases from the superheater
Remove condensate
Relieve pressure
Establish steam flow
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The damper is stuck closed
The boiler needs cleaning
There is a broken baffle
There is too much air
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100,000 Btu/therm
100,000 Btu/cu ft
152,000 Btu/therm
152,000 Btu/cu ft
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Lower than
Higher than
The same as
None of the above
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18,750 Btu/gal
18,750 Btu/lb
18,750 Btu/barrel
150,000 Btu/lb
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Feedwater
Vacuum
Proportioning
Turbine
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Boiler and check valve
Check valve and feedwater pump
Boiler and feedwater pump
Boiler and main steam header
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Heat that can be measured with a thermometer
970.3 Btu
Heat that cannot be measured
Heat that changes a substance's state but not its temperature
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