Safety & Environmental Protection (Deck) USCG Question #626 (Set 18)

The explosive range of Diesel Oil mixed with air is __________.

Official USCG Answer & Rule Citation

Correct Answer: Option C — 1.3% to 6.0% by volume

Marine diesel oil has established flammable limits ranging from approximately 1.3% to 6.0% vapor concentration by volume in air, reflecting its heavier hydrocarbon chain composition compared to volatile gasolines.

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