Reference to Ventilation Requirements for Flammable Liquids:
The International Fire Code (IFC 2021), Section 5004.3.7.3, and NFPA 30 (Flammable and Combustible Liquids Code), Section 18.5.4.1 specify the ventilation requirements for the use, dispensing, and mixing of flammable liquids in open systems.
Continuous mechanical ventilation must be provided at a minimum rate of 2 CFM per square foot of floor area.
Reason for Ventilation Requirements:
Flammable liquids release vapors that can ignite at low concentrations, creating fire and explosion hazards.
Proper ventilation removes vapors to prevent them from reaching flammable limits in the air.
Clarification of Incorrect Answer Choices:
A. 1 CFM per sq. ft. → Incorrect
Too low to effectively control flammable vapor accumulation.
C. 3 CFM per sq. ft. → Incorrect
While more ventilation can be beneficial, the minimum required by code is 2 CFM per sq. ft.
D. 4 CFM per sq. ft. → Incorrect
Exceeds the code-mandated minimum requirement, though higher ventilation rates may be required based on specific hazards.
Conclusion:
The correct and verified answer is B (2 CFM per sq. ft.), based on IFC 5004.3.7.3 and NFPA 30 Section 18.5.4.1, ensuring safe handling of flammable liquids in open systems.
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