USCG USCG Steam
Set 14 • Question #161 of 496
Launch Interactive Practice Room Assuming all burners are clean and the fuel oil is at the correct temperature, it is considered good practice to adjust the excess air until a light brown haze is obtained. With the aid of a chemical based flue gas analyzer, the percentage readings (not necessarily in order) should indicate __________.
A
no CO, low O2, and high CO2
✓ Correct Answer
B
low CO2, no O2, and high CO
C
high CO, high CO2, and no O2
D
high O2, low CO, and low CO2
USCG NMC Regulatory Explanation
In USCG Steam Plants (Boilers & Turbines), regarding 'Assuming all burners are clean and the fuel oil is at the correct temperature, it is considered good practice to adjust the excess air until a light brown haze is obtained. With the aid of a chemical based flue gas analyzer, the percentage readings (not necessarily in order) should indicate', the verified engineering fact is: 'no CO, low O2, and high CO2'.
Question Discussion & Notes
0Have a doubt, memory trick, or exam update? Share your insights with fellow mariners.
Loading mariner discussions...