BLACK SEAL HIGH PRESSURE EXAM 110
QUESTIONS & CORRECT ANSWERS LATEST 2025
What are the four main systems of a steam boiler? - ANSWER-Fuel, Draft,
Feedwater, and Steam
What is the first thing an operator should do when entering a steam boiler room? -
ANSWER-Check the water level of the boiler(s)
Describe the design of a firetube boiler - ANSWER-Fire inside the tubes,
surrounded by water
What is the primary purpose of Low Water Fuel Cut-Off (LWCO)? - ANSWER-
Shut off the fuel supply to the boiler in the event of low water
How often should the low water cut-off be tested? - ANSWER-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? -
ANSWER-Using the Try Cocks
What is sensible heat? - ANSWER-A change in temperature without a change in
matter
What unit is used in our industry to measure heat? - ANSWER-BTU's
, Describe thermal expansion - ANSWER-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? - ANSWER-Maintain
water level
What type of heat is a larger exchange of BTU's and results in a change in matter
without changing temperature? - ANSWER-Latent Heat
Which temperature scale is used by the majority of the world? - ANSWER-Celcius
How often, by law, must a boiler be inspected? - ANSWER-Annually
A change in temperature is an example of: - ANSWER-Sensible heat
How many BTU's does it take to change one pound of water into one pound of
steam? - ANSWER-970.3
What type of heat is a larger exchange of BTU's? - ANSWER-Latent Heat
What is the most common fuel oil used in boilers? - ANSWER-#2
What are the 4 fundamentals of combustion? - ANSWER-Mixture, Atomization,
Time, Temperature
What PH level is ideal in boiler operation? - ANSWER-10-11.5
QUESTIONS & CORRECT ANSWERS LATEST 2025
What are the four main systems of a steam boiler? - ANSWER-Fuel, Draft,
Feedwater, and Steam
What is the first thing an operator should do when entering a steam boiler room? -
ANSWER-Check the water level of the boiler(s)
Describe the design of a firetube boiler - ANSWER-Fire inside the tubes,
surrounded by water
What is the primary purpose of Low Water Fuel Cut-Off (LWCO)? - ANSWER-
Shut off the fuel supply to the boiler in the event of low water
How often should the low water cut-off be tested? - ANSWER-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? -
ANSWER-Using the Try Cocks
What is sensible heat? - ANSWER-A change in temperature without a change in
matter
What unit is used in our industry to measure heat? - ANSWER-BTU's
, Describe thermal expansion - ANSWER-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? - ANSWER-Maintain
water level
What type of heat is a larger exchange of BTU's and results in a change in matter
without changing temperature? - ANSWER-Latent Heat
Which temperature scale is used by the majority of the world? - ANSWER-Celcius
How often, by law, must a boiler be inspected? - ANSWER-Annually
A change in temperature is an example of: - ANSWER-Sensible heat
How many BTU's does it take to change one pound of water into one pound of
steam? - ANSWER-970.3
What type of heat is a larger exchange of BTU's? - ANSWER-Latent Heat
What is the most common fuel oil used in boilers? - ANSWER-#2
What are the 4 fundamentals of combustion? - ANSWER-Mixture, Atomization,
Time, Temperature
What PH level is ideal in boiler operation? - ANSWER-10-11.5
