What kind of ventilation should every inside storage room have?

• A. Mechanical exhaust ventilation system
• B. Air conditioning with recirculation
• C. Either gravity or mechanical exhaust ventilation system
• D. Gravity ventilation only

Answer: (C)

Ventilation for an inside storage room must actively remove any vapors or fumes by exchanging indoor air with the outside. If the room has suitable openings and external conditions allow, natural gravity ventilation can provide the required air changes. When openings aren’t reliable or feasible, a mechanical exhaust system pulls air out of the room to outside, achieving the necessary ventilation. Using air conditioning with recirculation is not appropriate here because it can trap and spread contaminants rather than remove them. Relying on gravity ventilation alone isn’t always practical in all conditions, so having a choice between gravity or mechanical exhaust ensures the space stays safe.