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!
Forced Draft, turbulence, and heat
Fuel oil, air, time, and mixture
Time, temperature, mixture, and atomization
Time, temperature, and draft
14.7
185.3
214.7
228.7
10
12
12.5
14.7
Steam turbine
Reciprocating steam engine
Feedwater heater
Air compressor
Supersaturated
Desuperheated
Superheated
Saturated
Heat air for combustion
Increase steam temperature
Add heat to feedwater
Keep tubes clean
Scotch marine
Cast iron
Firetube
Watertube
Rapid circulation of water
Scale on tubes
A high water level
A low firing rate
Scale
Pitting
Channeling
Plugging of lines
Centrifugal
Recriprocating
Jet
Vacuum
6,000
60,000
600,000
6,000,000
Remove surface scum
Test for water level
Test safety valves
Discharge sludge and sediment
3/4
1
1 1/4
1 1/2
1/2
3/4
1
1 1/4
1
1 1/2
2
2 1/2
Steam trap
Siphon
Check valve
Bypass
Water level in each boiler
Fuel supply
Flame condition
Feedwater pumps
One safety valve of the proper size
One safety valve with a rupture disc
Two lever type safety valves
Two or more safety valves
The burner is on low fire
The steam pressure is too low
Dirty heating surfaces
High combustion efficiency
Common blowdown lines
Manhole openings
Handhole openings
Continuous blowdown lines
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
At the NOWL
In the mud drum
In the flash tank
In the steam and water drum well below the NOWL
52
148
168
176
Superheated steam
Poor efficiency
Saturated steam
Normal operation
Inches of water
Psig
Psia
None of the above
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Here's an interesting quiz for you.