Question 761 Deck Safety

The correct answer is D) All of the above. Before using a fixed CO2 system to fight an engine room fire, you must evacuate all engine room personnel, secure the machinery in the engine room, and secure the engine room ventilation. This is because the discharge of CO2 into the engine room will displace the oxygen, rendering the space immediately dangerous to human life. Securing the machinery and ventilation ensures the fire is contained and the CO2 concentration is maintained. Evacuating personnel is critical to prevent injury or loss of life. The other answer choices are incorrect because they do not address all the necessary precautions that must be taken prior to activating a fixed CO2 system in an engine room fire.