Boiler Operator 3rd-test 1-2 Blue Book
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!
- 1.____ are necessary for complete combustion.
- A.
Forced Draft, turbulence, and heat
- B.
Fuel oil, air, time, and mixture
- C.
Time, temperature, mixture, and atomization
- D.
Time, temperature, and draft
- 2.If the steam pressure gauge indicates 200 psig, the absolute pressure is ____ psia.
- A.
14.7
- B.
185.3
- C.
214.7
- D.
228.7
- 3.A boiler is operating at 400 psi, and the safety valve opens at 410 psi and closes at 398 psi. The blowdown is ____ psi.
- A.
10
- B.
12
- C.
12.5
- D.
14.7
- 4.An oil cooler is commonly used with a(n) ____ when operating in conjunction with a turbo-generator.
- A.
Steam turbine
- B.
Reciprocating steam engine
- C.
Feedwater heater
- D.
Air compressor
- 5.A boiler is producing 40,000 lb of steam/hr at a pressure of 100 psi and a steam temperature of 500*F. The steam produced is ____ steam.
- A.
Supersaturated
- B.
Desuperheated
- C.
Superheated
- D.
Saturated
- 6.The economizer on a boiler is used to ____.
- A.
Heat air for combustion
- B.
Increase steam temperature
- C.
Add heat to feedwater
- D.
Keep tubes clean
- 7.Soot blowers are normally used with ____ boilers.
- A.
Scotch marine
- B.
Cast iron
- C.
Firetube
- D.
Watertube
- 8.Overheating of tubes on a boiler can be caused by ____.
- A.
Rapid circulation of water
- B.
Scale on tubes
- C.
A high water level
- D.
A low firing rate
- 9.Carbon dioxide in a condensate return system causes ____.
- A.
Scale
- B.
Pitting
- C.
Channeling
- D.
Plugging of lines
- 10.A ____ pump is a positive displacement pump.
- A.
Centrifugal
- B.
Recriprocating
- C.
Jet
- D.
Vacuum
- 11.A boiler generating 6,000 lb of steam/hr produces ____ Btu/hr.
- A.
6,000
- B.
60,000
- C.
600,000
- D.
6,000,000
- 12.A bottom blowdown is performed on a boiler to ____.
- A.
Remove surface scum
- B.
Test for water level
- C.
Test safety valves
- D.
Discharge sludge and sediment
- 13.Water columns are connected to the boiler with a minumum of ____ " pipe.
- A.
3/4
- B.
1
- C.
1 1/4
- D.
1 1/2
- 14.The minumum size of a water column blowdown valve is ____ ".
- A.
1/2
- B.
3/4
- C.
1
- D.
1 1/4
- 15.The maximum size bottom blowdown valves on boilers is ____ ".
- A.
1
- B.
1 1/2
- C.
2
- D.
2 1/2
- 16.A ____ allows condensate to pass through, but stops steam.
- A.
Steam trap
- B.
Siphon
- C.
Check valve
- D.
Bypass
- 17.When taking over a shift, the first thing to do is check the ____.
- A.
Water level in each boiler
- B.
Fuel supply
- C.
Flame condition
- D.
Feedwater pumps
- 18.According to the ASME code, a high-pressure boiler having more than 500 sq ft of heating surface shall have ____.
- A.
One safety valve of the proper size
- B.
One safety valve with a rupture disc
- C.
Two lever type safety valves
- D.
Two or more safety valves
- 19.The probable cause of an increase in the temperature of gases of combustion at the boiler outlet is ____.
- A.
The burner is on low fire
- B.
The steam pressure is too low
- C.
Dirty heating surfaces
- D.
High combustion efficiency
- 20.Boilers in battery equipped with ____ must have two main steam stop valves and a free-blowing drain between them.
- A.
Common blowdown lines
- B.
Manhole openings
- C.
Handhole openings
- D.
Continuous blowdown lines
- 21.In order to be sure the gauge glass is indicating an accurate water level reading, the stationary engineer should ____.
- A.
Shut the valve to the steam side of the gauge glass
- B.
Shut the valve to the water side of the gauge glass
- C.
Blow down the gauge glass
- D.
Blow down the water column
- 22.A continuous blowdown line is located ____.
- A.
At the NOWL
- B.
In the mud drum
- C.
In the flash tank
- D.
In the steam and water drum well below the NOWL
- 23.A temperature reading of 80*C is equal to ____ *F.
- A.
52
- B.
148
- C.
168
- D.
176
- 24.A chimney temperature of 250*F above steam temperature indicates ____.
- A.
Superheated steam
- B.
Poor efficiency
- C.
Saturated steam
- D.
Normal operation
- 25.A manometer is read in ____.
- A.
Inches of water
- B.
Psig
- C.
Psia
- D.
None of the above