Which of the flash points would indicate a grade D combustible liquid?
Official USCG Answer & Rule Citation
Correct Answer: Option D — 87°F
Per 46 CFR Table 30.25-1, Grade D combustible liquids encompass flash points greater than 80°F and up to 150°F. An 87°F flash point falls squarely within this regulated combustible range, requiring appropriate ventilation and ignition source control.
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