A characteristic of most petroleum vapors is...

A characteristic of most petroleum vapors is...

Question 1 of 27070

Q

A characteristic of most petroleum vapors is that they are __________.

A

lighter than air

B

not explosive at low temperatures

C

heavier than air

D

inert in stable air

Question 1 / 270705eccef9ebacbc34ba4d465ca

Question 1 of 270705eccef9ebacbc34ba4d465ca

A characteristic of most petroleum vapors is that they are __________.

Question 1 of 27070

Study area:

Study area:

Q

A characteristic of most petroleum vapors is that they are __________.

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🔍 Key Concepts

• Behavior of petroleum vapors compared to surrounding air • How vapors from gasoline or crude oil tend to collect in certain spaces on a vessel • Fire and explosion risk in confined or low-lying areas

💭 Think About

• Think about where fuel vapors are most dangerous on a ship: do they rise and disperse, or sink and accumulate? • When you open a gasoline container, do the fumes usually move upward and away quickly, or stay low and drift along the deck or bilge? • Which choice would best explain why we are so concerned about vapors in bilges, voids, and tanks?

✅ Before You Answer

• Consider the relative density of common petroleum vapors compared to air • Recall standard safety warnings about ventilating bilges and lower compartments before entering • Eliminate any options that conflict with what you know about flammability and explosion hazards of fuel vapors