Black seal high pressure EXAM QUESTIONS WITH ANSWERS

Black seal high pressure EXAM QUESTIONS
|\ |\ |\ |\ |\ |\




WITH ANSWERS |\




What are the four main systems of a steam boiler? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


ANSWERS ✔✔Fuel, Draft, Feedwater, and Steam |\ |\ |\ |\ |\




What is the first thing an operator should do when entering a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


steam boiler room? - CORRECT ANSWERS ✔✔Check the water
|\ |\ |\ |\ |\ |\ |\ |\ |\


level of the boiler(s)
|\ |\ |\




Describe the design of a firetube boiler - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\


✔✔Fire inside the tubes, surrounded by water
|\ |\ |\ |\ |\ |\




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


CORRECT ANSWERS ✔✔Shut off the fuel supply to the boiler in
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


the event of low water
|\ |\ |\ |\




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


ANSWERS ✔✔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? - CORRECT ANSWERS ✔✔Using the Try Cocks
|\ |\ |\ |\ |\ |\ |\ |\ |\




What is sensible heat? - CORRECT ANSWERS ✔✔A change in
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\


temperature without a change in matter |\ |\ |\ |\ |\

,What unit is used in our industry to measure heat? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


ANSWERS ✔✔BTU's |\




Describe thermal expansion - CORRECT ANSWERS ✔✔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? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


CORRECT ANSWERS ✔✔Maintain water level|\ |\ |\ |\




What type of heat is a larger exchange of BTU's and results in a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


change in matter without changing temperature? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\


ANSWERS ✔✔Latent Heat |\ |\




Which temperature scale is used by the majority of the world? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


CORRECT ANSWERS ✔✔Celcius |\ |\




How often, by law, must a boiler be inspected? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


ANSWERS ✔✔Annually |\




A change in temperature is an example of: - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


✔✔Sensible heat |\




How many BTU's does it take to change one pound of water into
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


one pound of steam? - CORRECT ANSWERS ✔✔970.3
|\ |\ |\ |\ |\ |\ |\

, What type of heat is a larger exchange of BTU's? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


ANSWERS ✔✔Latent Heat |\ |\




What is the most common fuel oil used in boilers? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


ANSWERS ✔✔#2 |\




What are the 4 fundamentals of combustion? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\


ANSWERS ✔✔Mixture, Atomization, Time, Temperature
|\ |\ |\ |\




What PH level is ideal in boiler operation? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


✔✔10-11.5


Visible black smoke coming from the boiler stack would most
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\


likely be an indication of: - CORRECT ANSWERS ✔✔A lack of air in
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


the combustion process
|\ |\ |\




Which type of valve allows the flow of feedwater in one direction
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


only? - CORRECT ANSWERS ✔✔Check Valve
|\ |\ |\ |\ |\




Which two minerals contribute to scale? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\


✔✔Calcium and Magnesium |\ |\




What device is used to measure draft? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\


✔✔Manometer


What is the purpose of a safety valve? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


✔✔Prevent overpressure of the boiler |\ |\ |\ |\