Which type of ventilation is required for...

Question 1 / 2707066636ee728f7522a1c518dbb

Question 1 of 2707066636ee728f7522a1c518dbb

Which type of ventilation is required for enclosed spaces containing gasoline, machinery, or fuel tanks? (small passenger vessel regulations)

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Question 1 of 27070

Which type of ventilation is required for enclosed spaces containing gasoline, machinery, or fuel tanks? (small passenger vessel regulations)

🔍 Key Concepts

• 46 CFR Subchapter T requirements for small passenger vessels using gasoline • Difference between supply ventilation (brings air in) and exhaust ventilation (removes fumes)** • Gasoline vapor behavior – heavier than air and tends to collect in low areas like bilges

💭 Think About

• Think about where gasoline vapors collect and whether you want the powered (mechanical) part of the system pushing air in or pulling vapors out. • Which arrangement best ensures that any potentially explosive gasoline vapors are removed from the lowest parts of the space before starting machinery? • Between supply and exhaust, which one is more critical to control actively when dealing with gasoline fumes in an enclosed machinery/fuel tank space?

✅ Before You Answer

• Verify in 46 CFR Part 182, Subpart J – Ventilation for small passenger vessels using gasoline. • Confirm which method is specified as required mechanical ventilation for spaces with gasoline engines or fuel tanks. • Check that the chosen option would effectively clear vapors from bilges and low points, not just bring fresh air in at higher levels.

Question 1 of 27070

Which type of ventilation is required for enclosed spaces containing gasoline, machinery, or fuel tanks? (small passenger vessel regulations)

Mechanical supply and natural exhaust

Natural supply and natural exhaust

Natural supply and mechanical exhaust

Mechanical supply and mechanical exhaust

Question 1 / 2707066636ee728f7522a1c518dbb

Question 1 of 2707066636ee728f7522a1c518dbb

Which type of ventilation is required for enclosed spaces containing gasoline, machinery, or fuel tanks? (small passenger vessel regulations)

Back

Question 1 of 27070

Which type of ventilation is required for enclosed spaces containing gasoline, machinery, or fuel tanks? (small passenger vessel regulations)