Question 46Safety & Environmental - Assistant Engineer

The correct answer is B) Bunker "C". Bunker "C" is classified as a grade "E" combustible liquid according to the US Coast Guard regulations. Grade "E" combustible liquids have a flash point of 140°F (60°C) or higher. Bunker "C" is a heavy fuel oil used in ship engines and boilers, and it meets the flash point criteria for a grade "E" combustible liquid. The other options are incorrect because: A) Very light naphtha would be a grade "C" flammable liquid, C) Most commercial gasoline would be a grade "B" flammable liquid, and D) Benzene would be a grade "B" flammable liquid, as they all have lower flash points than the 140°F threshold for grade "E" combustible liquids.