BLACK SEAL HIGH PRESSURE Certification
Exam Latest Questions and Correct Answers
(Verified Answers)
What are the four main systems of a steam boiler?
Fuel, Draft, Feedwater, and Steam
What is the first thing an operator should do when
entering a steam boiler room?
Check the water level of the boiler(s)
Describe the design of a firetube boiler
Fire inside the tubes, surrounded by water
What is the primary purpose of Low Water Fuel Cut-
Off (LWCO)?
Shut off the fuel supply to the boiler in the event of low
water
How often should the low water cut-off be tested?
Once per day by law. Once per shift is best practice.
What is an alternative way to verify water level without
using the gauge glass?
Using the Try Cocks
What is sensible heat?
A change in temperature without a change in matter
What unit is used in our industry to measure heat?
BTU's
Describe thermal expansion
,The tendency of matter to change in volume in response
to a change in temperature
What is the most important rule of safe boiler
operation?
Maintain water level
What type of heat is a larger exchange of BTU's and
results in a change in matter without changing
temperature?
Latent Heat
Which temperature scale is used by the majority of the
world?
Celcius
How often, by law, must a boiler be inspected?
Annually
A change in temperature is an example of:
Sensible heat
How many BTU's does it take to change one pound of
water into one pound of steam?
970.3
What type of heat is a larger exchange of BTU's?
Latent Heat
What is the most common fuel oil used in boilers?
#2
What are the 4 fundamentals of combustion?
Mixture, Atomization, Time, Temperature
What PH level is ideal in boiler operation?
10-11.5
, Visible black smoke coming from the boiler stack
would most likely be an indication of:
A lack of air in the combustion process
Which type of valve allows the flow of feedwater in
one direction only?
Check Valve
Which two minerals contribute to scale?
Calcium and Magnesium
What device is used to measure draft?
Manometer
What is the purpose of a safety valve?
Prevent overpressure of the boiler
What type of draft fan would be located in between the
chimney and the boiler furnace?
Induced Draft Fan
What valve is allowed between the safety valve and
the boiler?
No Valve Ever
How is a boiler's steam capacity measured?
lbs/hr
Which type of valve would be used to modulate (or
regulate) flow?
Globe Valve
What are the four elements of process control?
Process; Evaluation; Measurement; Control
How much heat is required to change 2,500 lb of water
to steam at 212 degrees?
Exam Latest Questions and Correct Answers
(Verified Answers)
What are the four main systems of a steam boiler?
Fuel, Draft, Feedwater, and Steam
What is the first thing an operator should do when
entering a steam boiler room?
Check the water level of the boiler(s)
Describe the design of a firetube boiler
Fire inside the tubes, surrounded by water
What is the primary purpose of Low Water Fuel Cut-
Off (LWCO)?
Shut off the fuel supply to the boiler in the event of low
water
How often should the low water cut-off be tested?
Once per day by law. Once per shift is best practice.
What is an alternative way to verify water level without
using the gauge glass?
Using the Try Cocks
What is sensible heat?
A change in temperature without a change in matter
What unit is used in our industry to measure heat?
BTU's
Describe thermal expansion
,The tendency of matter to change in volume in response
to a change in temperature
What is the most important rule of safe boiler
operation?
Maintain water level
What type of heat is a larger exchange of BTU's and
results in a change in matter without changing
temperature?
Latent Heat
Which temperature scale is used by the majority of the
world?
Celcius
How often, by law, must a boiler be inspected?
Annually
A change in temperature is an example of:
Sensible heat
How many BTU's does it take to change one pound of
water into one pound of steam?
970.3
What type of heat is a larger exchange of BTU's?
Latent Heat
What is the most common fuel oil used in boilers?
#2
What are the 4 fundamentals of combustion?
Mixture, Atomization, Time, Temperature
What PH level is ideal in boiler operation?
10-11.5
, Visible black smoke coming from the boiler stack
would most likely be an indication of:
A lack of air in the combustion process
Which type of valve allows the flow of feedwater in
one direction only?
Check Valve
Which two minerals contribute to scale?
Calcium and Magnesium
What device is used to measure draft?
Manometer
What is the purpose of a safety valve?
Prevent overpressure of the boiler
What type of draft fan would be located in between the
chimney and the boiler furnace?
Induced Draft Fan
What valve is allowed between the safety valve and
the boiler?
No Valve Ever
How is a boiler's steam capacity measured?
lbs/hr
Which type of valve would be used to modulate (or
regulate) flow?
Globe Valve
What are the four elements of process control?
Process; Evaluation; Measurement; Control
How much heat is required to change 2,500 lb of water
to steam at 212 degrees?
