Black seal high pressure questions with correct answers

What are the four main systems of a steam boiler? CORRECT ANSWER-Fuel, Draft, Feedwater, and Steam What is the first thing an operator should do when entering a steam boiler room? CORRECT ANSWER-Check the water level of the boiler(s) Describe the design of a firetube boiler CORRECT ANSWER-Fire inside the tubes, surrounded by water What is the primary purpose of Low Water Fuel Cut-Off (LWCO)? CORRECT 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? CORRECT 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? CORRECT ANSWER-Using the Try Cocks What is sensible heat? CORRECT ANSWER-A change in temperature without a change in matter What unit is used in our industry to measure heat? CORRECT ANSWER-BTU's Describe thermal expansion CORRECT ANSWER-The tendency of matter to change in volume in response to a change in temp