Grade D liquids are those having flash points of __________.
Official USCG Answer & Rule Citation
Correct Answer: Option D — greater than 80°F and less than 150°F
According to 46 CFR 30.10-15 and Table 30.25-1, Grade D combustible liquids are formally defined as those having a flash point greater than 80°F (27°C) and less than or equal to 150°F (66°C), dictating specific structural and fire protection requirements.
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