BOILER LICENSE "A" TEST PRACTICE QUESTIONS
2025-2026 GUIDE
1. In a boiler room there is an HRT boiler with the fol- a. 84.78 FIND OUT WHY
lowing dimensions: the drum is 96 inches in diameter
and 36 ft long; there are a total of 90 tubes, 4 inches
in diameter,; and the boiler shell is bricked 1/3 of the
distance from above.
What is the total heating surface of the tube sheets, in
square feet?
Select one:
a. 84.78 Correct
b. 101.87
c. 74.80
d. 95.31
2. When performing an inspection of the internal struc- d. open the firesides and
ture inside the steam and water drum during annual remove the burners
maintenance on a water tube boiler, what are the nec-
essary precautions?
Select one:
a. lock and tag the safety valve
b. follow confined space entry procedures
, BOILER LICENSE "A" TEST PRACTICE QUESTIONS
2025-2026 GUIDE
c. open the bottom blowdown lines to prevent back-
flow
d. open the firesides and remove the burners
3. Why is it necessary to keep a water seal on the atmos- a. to prevent air from en-
pheric relief valve? tering the condenser
Select one:
a. to prevent air from entering the condenser
b. stop steam from blowing out of the turbine
c. prevent particulates from entering the turbine
d. stop steam from entering the turbine
4. What is the quantity of heat needed to raise 40 pounds Q=M*C*(T2-T1)
of air from 60 degrees F to 550 degrees F? Q=M*C air*(T2-T1)
Q=40*.24*550-40
Q=40*.24*490
Select one: Q=4704 BTU
a. 2,326 Btu
b. 5,415 Btu
c. 4,704
d. 504 Btu
, BOILER LICENSE "A" TEST PRACTICE QUESTIONS
2025-2026 GUIDE
5. Which of the following is not a type of coal? d. carbonite
Select one:
a. lignite
b. anthracite
c. sub-bituminous
d. carbonite
6. What is a slaker? a. A method of introducing
lime and
water in the flue gas
Select one:
a. A method of introducing lime and
water in the flue gas
b. A damper in the flue gas stream
that directs the gasses of combustion
to the superheater
c. A method of overfiring the boiler
to produce more steam
d. A type of regenerative air preheater
7. How are particulates that are collected in precipitators d. rappers
discharged into hoppers?
, BOILER LICENSE "A" TEST PRACTICE QUESTIONS
2025-2026 GUIDE
Select one:
a. Shakers
b. fans
c. vacuums
d. rappers
8. An automatic control valve commonly used to main- a. A Balanced Valve
tain feedwater levels in a boiler whose internal design
is constructed with 2 valves and 2 discs is referred to?
Select one:
a. A Balanced Valve
b. An Automated Plug Valve
c. A Type-B Steam PSI reducing valve
d. A Double Check Valve
9. Operation of the feedwater control valve b. controls by water
only . level, steam flow, and
feedwater flow
Select one:
2025-2026 GUIDE
1. In a boiler room there is an HRT boiler with the fol- a. 84.78 FIND OUT WHY
lowing dimensions: the drum is 96 inches in diameter
and 36 ft long; there are a total of 90 tubes, 4 inches
in diameter,; and the boiler shell is bricked 1/3 of the
distance from above.
What is the total heating surface of the tube sheets, in
square feet?
Select one:
a. 84.78 Correct
b. 101.87
c. 74.80
d. 95.31
2. When performing an inspection of the internal struc- d. open the firesides and
ture inside the steam and water drum during annual remove the burners
maintenance on a water tube boiler, what are the nec-
essary precautions?
Select one:
a. lock and tag the safety valve
b. follow confined space entry procedures
, BOILER LICENSE "A" TEST PRACTICE QUESTIONS
2025-2026 GUIDE
c. open the bottom blowdown lines to prevent back-
flow
d. open the firesides and remove the burners
3. Why is it necessary to keep a water seal on the atmos- a. to prevent air from en-
pheric relief valve? tering the condenser
Select one:
a. to prevent air from entering the condenser
b. stop steam from blowing out of the turbine
c. prevent particulates from entering the turbine
d. stop steam from entering the turbine
4. What is the quantity of heat needed to raise 40 pounds Q=M*C*(T2-T1)
of air from 60 degrees F to 550 degrees F? Q=M*C air*(T2-T1)
Q=40*.24*550-40
Q=40*.24*490
Select one: Q=4704 BTU
a. 2,326 Btu
b. 5,415 Btu
c. 4,704
d. 504 Btu
, BOILER LICENSE "A" TEST PRACTICE QUESTIONS
2025-2026 GUIDE
5. Which of the following is not a type of coal? d. carbonite
Select one:
a. lignite
b. anthracite
c. sub-bituminous
d. carbonite
6. What is a slaker? a. A method of introducing
lime and
water in the flue gas
Select one:
a. A method of introducing lime and
water in the flue gas
b. A damper in the flue gas stream
that directs the gasses of combustion
to the superheater
c. A method of overfiring the boiler
to produce more steam
d. A type of regenerative air preheater
7. How are particulates that are collected in precipitators d. rappers
discharged into hoppers?
, BOILER LICENSE "A" TEST PRACTICE QUESTIONS
2025-2026 GUIDE
Select one:
a. Shakers
b. fans
c. vacuums
d. rappers
8. An automatic control valve commonly used to main- a. A Balanced Valve
tain feedwater levels in a boiler whose internal design
is constructed with 2 valves and 2 discs is referred to?
Select one:
a. A Balanced Valve
b. An Automated Plug Valve
c. A Type-B Steam PSI reducing valve
d. A Double Check Valve
9. Operation of the feedwater control valve b. controls by water
only . level, steam flow, and
feedwater flow
Select one:
