The Ultimate Guide to Spray Booth Codes and Regulations
NFPA Spray Booth Codes and Regulations When trying to get compliant, there is often mystery and difficulty in finding what the actual paint booth codes and regulations are! Here we compiled a comprehensive list of codes ranging from CBC, CEC, NFPA, and more to ensure you can meet and exceed all requirements when setting up a new paint booth! The installation of Spray Booth equipment to meet the requirement of the 2022 Editions of the following California Code. The California Fire Code (CFC) 2019 CFC: 2404.7.6 Termination point The termination point for exhaust ducts discharging to the atmosphere shall not be less than the following distances: the building; 6 feet from exterior walls and roofs; 30 feet from combustible walls or openings into the building that are in the direction of the exhaust discharge; 10 feet above adjoining grade. into the building; 10 feet above adjoining grade. to 2019 CFC: 2404.7.6 Termination point. Chapter 24 Flammable Finishes 2404.3.3 Spray Booths The design and construction of spray booths shall be in accordance with Sections 2404.3.3.1 through 2404.3.3.6, Sections 2404.4 through 2404.8 and NFPA 33. 2404.3.3.1 Construction Spray booths shall be constructed of approved noncombustible materials. Aluminum shall not be used. Where walls or ceiling assemblies are constructed of sheet metal, single-skin assemblies shall be not thinner than 0.0478 inch (18 gage) (1.2 mm) and each sheet of double-skin assemblies shall be not thinner than 0.0359 inch (20 gage) (0.9 mm). Structural sections of spray booths are allowed to be sealed with latex-based or similar caulks and sealants. 2404.3.3.2 Surfaces The interior surfaces of spray booths shall be smooth; shall be constructed so as to permit the free passage of exhaust air from all parts of the interior, and to facilitate washing and cleaning; and shall be designed to confine residues within the booth. Aluminum shall not be used. 2404.3.3.3 Floor Combustible floor construction in spray booths shall be covered by approved, noncombustible, nonsparking material, except where combustible coverings, including but not limited to thin paper or plastic and strippable coatings, are utilized over noncombustible materials to facilitate cleaning operations in spray booths. 2404.3.3.5 Clear Space Spray booths shall be installed so that all parts of the booth are able to be accessed for cleaning. A clear space of not less than 3 feet (914 mm) shall be maintained on all sides of the spray booth. This clear space shall be kept free of any storage or combustible construction. Exceptions: This requirement shall not prohibit locating a spray booth closer than 3 feet (914 mm) to or directly against an interior partition, wall or floor/ceiling assembly that has a fire-resistance rating of not less than 1 hour, provided that the spray booth can be adequately maintained and cleaned. This requirement shall not prohibit locating a spray booth closer than 3 feet (914 mm) to an exterior wall or a roof assembly, provided that the wall or roof is constructed of noncombustible material and the spray booth can be adequately maintained and cleaned. 2404.4 Fire Protection Spray booths and spray rooms shall be protected by an approved automatic fire-extinguishing system complying with Chapter 9. Protection shall extend to exhaust plenums, exhaust ducts, and both sides of dry filters where such filters are used. 2404.7 Ventilation Mechanical ventilation of flammable vapor areas shall be provided in accordance with Section 502.7 of the California Mechanical Code. 2404.7.1 Operation Mechanical ventilation shall be kept in operation at all times while spraying operations are being conducted and for a sufficient time thereafter to allow vapors from drying coated articles and finishing material residue to be exhausted. Spraying equipment shall be interlocked with the ventilation of the flammable vapor areas such that spraying operations cannot be conducted unless the ventilation system is in operation. 2404.7.3.2 Enclosed Spray Booth or Spray Room With Openings for Product Conveyance For spray application operations conducted in an enclosed spray booth or spray room with openings for product conveyance, the ventilation system shall be designed, installed, and maintained so that the average air velocity into the spray booth through openings is not less than 100 feet per minute (0.51 m/s). Exceptions: For fixed or automated electrostatic spray application equipment, the average air velocity into the spray booth through all openings shall be not less than 50 feet per minute (0.25 m/s). Where methods are used to reduce cross drafts that can draw vapors and overspray through openings from the spray booth or spray room, the average air velocity into the spray booth or spray room shall be that necessary to capture and confine vapors and overspray to the spray booth or spray room. 2403.2.7 Welding Warning Signs Welding, cutting and similar spark-producing operations shall not be conducted in or adjacent to flammable vapor areas or dipping or coating operations unless precautions have been taken to provide safety. Conspicuous signs with the following warning shall be posted in the vicinity of flammable vapor areas, dipping operations and paint storage rooms: NO WELDING THE USE OF WELDING OR CUTTING EQUIPMENT IN OR NEAR THIS AREA IS DANGEROUS BECAUSE OF FIRE AND EXPLOSION HAZARDS. WELDING AND CUTTING SHALL BE DONE ONLY UNDER THE SUPERVISION OF THE PERSON IN CHARGE. 2403.2.6 Smoking Prohibited The California Building Code (CBC) Section 416 Spray Application of Flammable Finishes [F] 416.1 General The provisions of this section shall apply to the construction, installation and use of buildings and structures, or parts thereof, for the spray application of flammable finishes. Operations and equipment shall comply with the California Fire Code . [F] 416.2.1 Construction Walls and ceilings of spray rooms shall be constructed of noncombustible materials or the interior surface shall be completely covered with noncombustible materials. Aluminum shall not be used. [F] 416.2.2 Surfaces The interior surfaces of spray rooms shall be smooth and shall be so constructed to permit the free passage of exhaust air from all parts of the interior and to facilitate washing and cleaning, and shall be so designed to confine residues within the room. [F]
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