Section 415 has been completely reorganized from the 2009 code; therefore, the * and ** margin indicators have not been included for clarity.
The provisions of Sections 415.1 through 415.10 shall apply to the storage and use of hazardous materials in excess of the maximum allowable quantities per control area listed in Section 307.1. Buildings and structures with an occupancy in Group H shall also comply with the applicable provisions of Section 414 and the Florida Fire Prevention Code.
The following terms are defined in Chapter 2:
IMMEDIATELY DANGEROUS TO LIFE AND
LOWER FLAMMABLE LIMIT (LFL).
STORAGE, HAZARDOUS MATERIALS.
Group H occupancies shall be located on property in accordance with the other provisions of this chapter. In Groups H-2 and H-3, not less than 25 percent of the perimeter wall of the occupancy shall be an exterior wall.
- Liquid use, dispensing and mixing rooms having a floor area of not more than 500 square feet (46.5 m2) need not be located on the outer perimeter of the building where they are in accordance with the Florida Fire Prevention Code and NFPA 30.
- Liquid storage rooms having a floor area of not more than 1,000 square feet (93 m2) need not be located on the outer perimeter where they are in accordance with the Florida Fire Prevention Code and NFPA 30.
- Spray paint booths that comply with the Florida Fire Prevention Code need not be located on the outer perimeter.
Regardless of any other provisions, buildings containing Group H occupancies shall be set back to the minimum fire separation distance as set forth in Sections 4184.108.40.206 through 4220.127.116.11. Distances shall be measured from the walls enclosing the occupancy to lot lines, including those on a public way. Distances to assumed lot lines established for the purpose of determining exterior wall and opening protection are not to be used to establish the minimum fire separation distance for buildings on sites where explosives are manufactured or used when separation is provided in accordance with the quantity distance tables specified for explosive materials in the Florida Fire Prevention Code.
Group H-1 occupancies shall be set back not less than 75 feet (22 860 mm) and not less than required by the Florida Fire Prevention Code.
Group H-2 occupancies shall be set back not less than 30 feet (9144 mm) where the area of the occupancy is greater than 1,000 square feet (93 m2) and it is not required to be located in a detached building.
|A DETACHED BUILDING IS REQUIRED WHEN THE QUANTITY OF MATERIAL EXCEEDS THAT LISTED HEREIN Florida Fire Prevention Code|
|Material||Class||Solids and Liquids (tons)a, b||Gases (cubic feet)a, b|
|Explosives||Division 1.1||Maximum Allowable Quantity||Not Applicable|
|Division 1.2||Maximum Allowable Quantity|
|Division 1.3||Maximum Allowable Quantity|
|Division 1.4||Maximum Allowable Quantity|
|Division 1.5||Maximum Allowable Quantity|
|Division 1.6||Maximum Allowable Quantity|
|Oxidizers||Class 4||Maximum Allowable Quantity||Maximum Allowable Quantity|
|Unstable (reactives) detonable||Class 3 or 4||Maximum Allowable Quantity||Maximum Allowable Quantity|
|Oxidizer, liquids and solids||Class 3||1,200||Not Applicable|
|Class 2||2,000||Not Applicable|
|Organic peroxides||Detonable||Maximum Allowable Quantity||Not Applicable|
|Class I||Maximum Allowable Quantity||Not Applicable|
|Class II||25||Not Applicable|
|Class III||50||Not Applicable|
|Unstable (reactives) nondetonable||Class 3||1||2,000|
|Water reactives||Class 3||1||Not Applicable|
|Class 2||25||Not Applicable|
|Pyrophoric gases||Not Applicable||Not Applicable||2,000|
|For SI: 1 ton = 906 kg, 1 cubic foot = 0.02832 m3, 1 pound = 0.454 kg.|
|a. For materials that are detonable, the distance to other buildings or lot lines shall be in accordance with the Florida Fire Prevention Code based on trinitrotoluene (TNT) equivalence of the material. For materials classified as explosives, see the Florida Fire Prevention Code.|
|b. "Maximum Allowable Quantity" means the maximum allowable quantity per control area set forth in Table 307.1(1).|
|c. Limited to Division 1.4 materials and articles, including articles packaged for shipment, that are not regulated as an explosive under Bureau of Alcohol, Tobacco, Firearms and Explosives (BATF) regulations or unpackaged articles used in process operations that do not propagate a detonation or deflagration between articles, provided the net explosive weight of individual articles does not exceed 1 pound.|
Group H-1 occupancies shall be in buildings used for no other purpose, shall not exceed one story in height and be without basements, crawl spaces or other under-floor spaces. Roofs shall be of lightweight construction with suitable thermal insulation to prevent sensitive material from reaching its decomposition temperature. Group H-1 occupancies containing materials that are in themselves both physical and health hazards in quantities exceeding the maximum allowable quantities per control area in Table 307.1(2) shall comply with requirements for both Group H-1 and H-4 occupancies.
Group H-2 and H-3 occupancies containing quantities of hazardous materials in excess of those set forth in Table 415.5.2 shall be in detached buildings used for manufacturing, processing, dispensing, use or storage of hazardous materials. Materials listed for Group H-1 occupancies in Section 307.3 are permitted to be located within Group H-2 or H-3 detached buildings provided the amount of materials per control area do not exceed the maximum allowed quantity specified in Table 307.1(1).
Group H-2 and H-3 occupancies containing water-reactive materials shall be resistant to water penetration. Piping for conveying liquids shall not be over or through areas containing water reactives, unless isolated by approved liquid-tight construction.
The provisions of Sections 418.104.22.168 through 422.214.171.124 shall apply to buildings in which materials that produce combustible dusts are stored or handled. Buildings that store or handle combustible dusts shall comply with the applicable provisions of NFPA 61, NFPA 85, NFPA 120, NFPA 484, NFPA 654, NFPA 655 and NFPA 664, and the Florida Fire Prevention Code.
Buildings shall be constructed in compliance with the height and area limitations of Table 503 for Group H-2; except that where erected of Type I or II construction, the heights and areas of grain elevators and similar structures shall be unlimited, and where of Type IV construction, the maximum building height shall be 65 feet (19 812 mm) and except further that, in isolated areas, the maximum building height of Type IV structures shall be increased to 85 feet (25 908 mm).
Every room or space occupied for grinding or other operations that produce combustible dusts shall be enclosed with fire barriers constructed in accordance with Section 707 or horizontal assemblies constructed in accordance with Section 711, or both. The fire-resistance rating of the enclosure shall be not less than 2 hours where the area is not more than 3,000 square feet (279 m2), and not less than 4 hours where the area is greater than 3,000 square feet (279 m2).
Conveyors, chutes, piping and similar equipment passing through the enclosures of rooms or spaces shall be constructed dirt tight and vapor tight, and be of approved noncombustible materials complying with Chapter 30.
Grain elevators, malt houses and buildings for similar occupancies shall not be located within 30 feet (9144 mm) of interior lot lines or structures on the same lot, except where erected along a railroad right-of-way.
Coal pockets located less than 30 feet (9144 mm) from interior lot lines or from structures on the same lot shall be constructed of not less than Type IB construction. Where more than 30 feet (9144mm) from interior lot lines, or where erected along a railroad right-of-way, the minimum type of construction of such structures not more than 65 feet (19 812 mm) in building height shall be Type IV.
Storage tanks shall be approved tanks conforming to the requirements of the Florida Fire Prevention Code.
A liquid-tight containment area compatible with the stored liquid shall be provided. The method of spill control, drainage control and secondary containment shall be in accordance with the Florida Fire Prevention Code.
An approved automatic alarm shall be provided to indicate a leak in a storage tank and room. The alarm shall sound an audible signal, 15 dBa above the ambient sound level, at every point of entry into the room in which the leaking storage tank is located. An approved sign shall be posted on every entry door to the tank storage room indicating the potential hazard of the interior room environment, or the sign shall state: WARNING, WHEN ALARM SOUNDS, THE ENVIRONMENT WITHIN THE ROOM MAY BE HAZARDOUS. The leakage alarm shall also be supervised in accordance with Chapter 9 to transmit a trouble signal.
Storage tank vents for Class I, II or IIIA liquids shall terminate to the outdoor air in accordance with the Florida Fire Prevention Code.