A tank or compartment is "gas free" when...

Question 1 / 205eccef9ebacbc34ba4d465d9

Question 1 of 205eccef9ebacbc34ba4d465d9

A tank or compartment is "gas free" when there is an absence of dangerous concentrations of __________.

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Question 1 of 20

5eccef9ebacbc34ba4d465d9

A tank or compartment is "gas free" when there is an absence of dangerous concentrations of __________.

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🔍 Key Concepts

• Gas freeing of tanks and confined spaces on tank vessels • Difference between liquid residues and gaseous vapors • Meaning of dangerous concentrations in terms of fire, explosion, and toxicity

💭 Think About

• Which choices are talking about liquids or residues and which are talking about gases or vapors? • When marine regulations say a space is "gas free," what hazards are they most concerned about: liquid in the bottom of the tank, or vapor in the air you breathe and that could ignite? • Look for the option that covers both fire/explosion risk and health (breathing) risk inside the space.

✅ Before You Answer

• Identify which options mention gases or vapors, not just liquids or residues • Make sure the option you pick addresses dangerous concentrations in the air, not just material left on surfaces or in liquid form • Confirm that the choice you select would make the space safe for both entry and hot work (welding, burning, etc.)

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Question 1 of 20

A tank or compartment is "gas free" when there is an absence of dangerous concentrations of __________.

residues from cargo oil

all flammable liquids

flammable or toxic gases

any combustible liquid

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Question 1 / 205eccef9ebacbc34ba4d465d9

Question 1 of 205eccef9ebacbc34ba4d465d9

A tank or compartment is "gas free" when there is an absence of dangerous concentrations of __________.

Back

Question 1 of 20

5eccef9ebacbc34ba4d465d9

A tank or compartment is "gas free" when there is an absence of dangerous concentrations of __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed