Which of the flash points would indicate a grade D combustible liquid?
Official USCG Answer & Rule Citation
Correct Answer: Option C — 87°F
Per 46 CFR 30.10-22, Grade D combustible liquids have a flash point above 80°F and at or below 150°F. An 87°F flash point falls squarely within this range, distinguishing it from Grade C (80°F or below) and Grade E (above 150°F) products for regulatory and safety purposes.
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