Black seal high pressure Questions and Correct Answers/ Latest Update / Already Graded

Page |1


Black seal high pressure Questions and
Correct Answers/ Latest Update / Already
Graded
What are the four main systems of a steam boiler?

Ans: Fuel, Draft, Feedwater, and Steam


What is the first thing an operator should do when entering a steam
boiler room?

Ans: Check the water level of the boiler(s)


Describe the design of a firetube boiler

Ans: Fire inside the tubes, surrounded by water


What is the primary purpose of Low Water Fuel Cut-Off (LWCO)?

Ans: Shut off the fuel supply to the boiler in the event of low
water


How often should the low water cut-off be tested?

Ans: Once per day by law. Once per shift is best practice.



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What is an alternative way to verify water level without using the
gauge glass?

Ans: Using the Try Cocks


What is sensible heat?

Ans: A change in temperature without a change in matter


What unit is used in our industry to measure heat?

Ans: BTU's


Describe thermal expansion

Ans: 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?

Ans: Maintain water level


What type of heat is a larger exchange of BTU's and results in a change
in matter without changing temperature?

Ans: Latent Heat


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Which temperature scale is used by the majority of the world?

Ans: Celcius


How often, by law, must a boiler be inspected?

Ans: Annually


A change in temperature is an example of:

Ans: Sensible heat


How many BTU's does it take to change one pound of water into one
pound of steam?

Ans: 970.3


What type of heat is a larger exchange of BTU's?

Ans: Latent Heat


What is the most common fuel oil used in boilers?

Ans: #2



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