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424.7.1 Flammable and Combustible Liquids
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The density and total quantity of flammable and combustible liquids allowed within a laboratory unit, outside of storage rooms, shall comply with Table 10.1.1 of NFPA 45 for laboratory unit fire hazard Class D.
Exceptions: The following exceptions apply to other than educational or instructional laboratories:
Exceptions: The following exceptions apply to other than educational or instructional laboratories:
- The density of flammable and combustible liquids allowed within a laboratory unit may be increased to those set forth in Table 10.1.1 of NFPA 45 for laboratory unit fire hazard Class B provided the total quantity of flammable and combustible liquid, including any in storage cabinets or safety cans, does not exceed 25 gallons (95 L).
- The density of flammable and combustible liquids allowed within a laboratory unit may be increased to those set forth in Table 10.1.1 of NFPA 45 for laboratory unit fire hazard Class B provided the total quantity of flammable and combustible liquid, including any in storage cabinets or safety cans, does not exceed 30 gallons (114 L) and the walls, floors and ceilings of the laboratory unit are separated from all adjoining areas by 2-hour fire-rated construction.
- Based on a density of 1 gallon per 100 square feet (3.785 L per 9.3 m2) of area, the quantity of flammable and combustible liquid allowed within a laboratory unit, excluding quantities in storage cabinets or safety cans, may be increased to 100 gallons (379 L), and the total quantities of flammable and combustible liquids, including quantities in storage cabinets or safety cans, may be increased to 200 gallons (775 L) provided the walls, floors and ceilings of the laboratory unit are separated from all adjoining areas by 2-hour fire-rated construction.
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