Question 431Steam Plants - Assistant Engineer70% to pass
If the flue gas oxygen content is too high, you should _______________.
AI Explanation
The correct answer is C) adjust the combustion control system.
If the flue gas oxygen content is too high, it indicates that there is too much excess air in the combustion process. This means that the combustion control system needs to be adjusted to reduce the amount of air being drawn into the boiler, which will in turn lower the oxygen content in the flue gas. Increasing the forced draft fan speed (A) or adjusting the fuel oil temperature (B) or service system (D) would not directly address the high oxygen content issue.
Related Questions
#429 Which color burner flame would indicate too much excess air? #430 Lower boiler efficiency results from carrying too much excess air because _______________.#432 Which of the conditions listed may be indicated by the lifting of the DC heater relief valve? #433 The water level in a steaming boiler has risen to within 2 inches from the top of the gage glass. Your immediate action should be to _______________.#434 In a closed feed and water cycle, which of the conditions listed could prevent vacuum from reaching the desired level?