🔍 Key Concepts

• 46 CFR requirements for tank vessel pump room ventilation • Differences between mechanical (power) ventilation and natural ventilation • Why certain ventilation methods may be restricted in flammable cargo areas

💭 Think About

• Consider which methods can create enough air movement in an enclosed pump room handling flammable vapors. • Think about whether regulations tend to allow passive systems alone in hazardous spaces, or if they require something more positive/forced. • Ask yourself if all listed systems are equally acceptable under 46 CFR, or if some are prohibited in cargo pump rooms for safety reasons.

✅ Before You Answer

• Look up the specific 46 CFR section on pump room ventilation for tank vessels and see what methods are explicitly permitted. • Verify whether natural ventilation alone is acceptable for enclosed cargo pump rooms handling flammable liquids. • Check if gas ejectors are mentioned as a permitted means of ventilation in hazardous spaces, or if the regulation emphasizes power-driven ventilation.