Engine : Steam Plants - 647/811
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| Flame scanners are used with boiler combustion control systems to monitor flame quality and to __________. |
| A) secure the fuel oil service pump in the event of a floor fire |
| B) regulate the fuel/air ratio controller for more efficient combustion |
| C) shut off the fuel supply if flame failure is detected |
| D) secure the forced draft fan in the event of a flame failure |
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