906.3.4 Class D fire hazards.
FC § 906.3.4
The minimum size, number and placement of portable fire extinguishers in occupancies in which there is a Class D fire hazard risk (combustible metals) shall be in accordance with NFPA 10. FC Table 906.3.1Portable Fire Extinguishers for Class a Fire Hazards Light (Low) Hazard Occupancy dOrdinary (Moderate) Hazard Occupancy dExtra (High) Hazard Occupancy dMinimum Rated Single Extinguisher2-A c2-A4-A aMaximum Floor Area Per Unit of A3,000 square feet e1,500 square feet1,000 square feetMaximum Travel Distance to Extinguisher75 feet75 feet75 feet For SI: 1 foot = 304.8 mm, 1 square foot = 0.0929 m2, 1 gallon = 3.785 L. a. Two 2 1/2-gallon water-type extinguishers shall be deemed the equivalent of one 4-A rated extinguisher. b. Reserved. c. Two water-type extinguishers each with a 1-A rating shall be deemed the equivalent of one 2-A rated extinguisher for Light (Low) Hazard Occupancies. d. For the purposes of FC Table 906.3.1, the terms "Light (Low) Hazard", "Ordinary (Moderate) Hazard" and "Extra (High) Hazard" shall be as defined in NFPA 10. e. In occupancies classified as Groups A-3, B, or E which are protected throughout by a sprinkler system, the maximum floor area per unit of A may be doubled. FC Table 906.3.2Flammable or Combustible Liquids with Depths of less than or Equal to 0.25-inch a Type of HazardBasic Minimum Portable Fire Extinguisher RatingMaximum Travel Distance to Portable Fire Extinguishers (feet)Light (Low)5-B10-B3050Ordinary (Moderate)10-B20-B3050Extra (High)40-B80-B3050 For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm. a. For requirements on water-soluble flammable liquids and alternative sizing criteria, see NFPA 10.
