Question 1937Deck General70% to pass
Your vessel has a gasoline engine and a mechanical exhaust ventilation system. BEFORE starting the engine, the exhaust blower should be run long enough to _______________.
AI Explanation
The correct answer is A) insure at least one complete change of air in the compartments concerned.
The reasoning for this is that gasoline engines release flammable and potentially explosive vapors, so it is crucial to ensure proper ventilation before starting the engine. The exhaust blower should be run long enough to completely replace the air in the compartments and remove any accumulated vapors, reducing the risk of fire or explosion.
The other options are incorrect because B) warming up the blower motor is not the primary purpose, C) checking the system's operating condition is important but not the main reason, and D) providing fresh air is important but a complete air change is the key requirement.
Related Questions
#1935 Why is it necessary to extend ventilators of gasoline powered vessels to the bilges? #1936 On board small passenger vessels, fill lines and sounding pipes of gasoline tanks must extend directly _______________.#1938 A fill pipe for a gasoline tank on board a small passenger vessel must be _______________.#1939 On board a small passenger vessel, fuel tank vents should _______________.#1940 Outlets in gasoline fuel lines are _______________.