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(a) A permit from the Fire Chief shall be required whenever flammable finishes are applied to objects by spraying or dipping or highly flammable finishes are applied by brushing, flow coating or roller coating, and more than one (1) gallon of flammable finishing material is used on any working day, or more than five (5) gallons of flammable finishing material are stored for use.
(b) Whenever a permit is required for installations made or installations altered after June 27, 1949, and before a permit is issued, floor plans showing the proposed arrangement of all equipment, storage rooms and mixing rooms, and the provisions for ventilation and fire protection, shall first be submitted to and approved by the Chief and the Commissioner of Air Pollution Control.
(Ord. No. 991-49. Passed 6-27-49, eff. 6-27-49)
(a) The storage of flammable finishing material not in actual use, within finishing rooms, shall be restricted as follows:
(1) Not to exceed twenty (20) gallons, with no container exceeding one (1) gallon capacity, may be stored on a substantial shelf with suitable guard strips to prevent containers from falling at a height not less than four (4) feet above the floor level; provided that in no case shall the quantity so stored exceed that required for one (1) day’s operations.
(2) Not more than fifty (50) gallons, with no container exceeding five (5) gallons capacity, may be stored within a standard storage cabinet as specified in Section 3129.43(d).
(b) Quantities in excess of those permitted in subsections (a)(1) and (2) hereof shall be stored outside the finishing room in separate rooms conforming to the provisions of Section 3129.43(c), or in another approved manner permitted by this Fire Prevention Code.
(c) Containers with a total capacity not exceeding five (5) gallons may be opened and their contents mixed in a finishing room during such times as the ventilating system is in operation; the mixing of flammable finishes from containers exceeding a total capacity of five (5) gallons shall be done only in rooms conforming to the provisions of Section 3129.43(c), or in special mixing rooms of equivalent construction, except that flammable liquid may be added to dip tanks, or to pressure tanks used for spraying, by pumping from approved containers not exceeding sixty (60) gallon capacity.
(d) Receptacles containing flammable finishes shall be kept tightly covered whenever practicable.
(Ord. No. 991-49. Passed 6-27-49, eff. 6-27-49)
(a) All storage containers of flammable finishes shall be of metal suitably constructed to prevent leakage.
(b) Containers used as part of spraying equipment shall be of metal except that glass containers not exceeding one (1) pint capacity, and properly guarded containers with glass inner linings not exceeding one (1) gallon capacity, may be used.
(Ord. No. 991-49. Passed 6-27-49, eff. 6-27-49)
(a) Unless suitable ventilated spray booths are used for all finishing operations, finishing rooms shall be continuously ventilated mechanically when in use. Ventilation shall be adequate to prevent fire and health hazards and the provisions therefor shall be subject to the approval of the Fire Chief and the Commissioner of Air Pollution Control. Ventilation shall be such that the percentage of flammable vapor present in any room or exhaust duct at anytime shall not exceed one-fifth (1/5) the lower explosive limit and that toxicity will be reduced by dilution to a safe concentration.
(b) Exhaust outlets in finishing rooms shall be located at the level where flammable vapors accumulate and generally not more than five (5) feet above the floor level, and shall discharge directly outside the building in an approved location. Stacks and ducts shall be of incombustible material and constructed so that there will be no leakage of flammable vapor therefrom. Exhaust ducts of metal shall be constructed of not lighter than twenty (20) U.S. gauge. Exhaust ducts shall be kept not less than six (6) inches from combustible surfaces and shall have approved incombustible ventilating thimbles where passing through combustible floor, wall or roof construction. Where such exhaust ducts extend through other stories of a building, they shall be enclosed with incombustible enclosures having a fire resistance rating of not less than two (2) hours. The discharge outlets of exhaust ducts shall be located so that the discharge of vapors or residue therefrom or, in the event of fire, the discharge of flame, hot gases or smoke, shall not create a hazardous fire, fume or smoke condition or nuisance. All such exhaust systems shall be independent of all other ventilating systems and shall conform to the applicable provisions of Sections 3155.75 to 3155.77.
(c) So far as practicable, all exhaust ducts shall be installed without ledges or crevices in which paint residue may lodge. Provisions shall be made to permit cleaning the interiors of such exhaust ducts. Such provisions shall include access openings at the bottom of every vertical riser and access openings, spaced not more than twenty (20) feet on centers, in horizontal sections.
(Ord. No. 991-49. Passed 6-27-49, eff. 6-27-49)
(a) Artificial lighting in finishing rooms, spray rooms, spray booths and dipping rooms shall be by electricity only. Except as provided in subsection (b) hereof, all electric wiring and equipment in rooms where flammable finishing materials are applied shall be in conformity with the provisions of Chapter 3161, governing installations in hazardous locations.
(b) Where spraying is done in properly arranged and ventilated spray booths, portions of the finishing room more than twenty (20) feet from such booths need not be considered as hazardous locations in determining requirements for electrical installations unless such portions are so classified as the result of other operations. In the area within twenty (20) feet of properly arranged and ventilated spray booths, provisions governing electrical installations in hazardous locations may be modified to allow motors of the totally enclosed type or of the open-induction type having no brushes, make or break contacts, collects or other arcing or sparking parts, and to allow lamps of the enclosed vapor-tight type.
(Ord. No. 991-49. Passed 6-27-49, eff. 6-27-49)
(a) Finishing rooms in which flammable finishes are applied shall be kept free from all unnecessary combustible material and refuse.
(b) Floors of finishing rooms shall be of incombustible material. Floors of finishing rooms, drain boards and the interiors of spray booths, shall be thoroughly cleaned at least once a day, and all fans, ducts, side-walls and ceilings kept as clean as practicable at all times. In cleaning, care shall be taken to use implements which will not create sparks. Wherever practicable, surfaces to be cleaned shall be sprayed or otherwise wetted down with water before cleaning. Sweepings or deposits from spray booths or rooms, ducts or stacks shall be immediately removed from the building and safely disposed.
(c) Metal waste cans with self-closing covers shall be provided for all waste and rags which have come in contact with flammable finishing material.
(Ord. No. 991-49. Passed 6-27-49, eff. 6-27-49)
For heating purposes, indirect systems only, such as steam, forced warm air or hot water, shall be used and no open flame shall be permitted in storage cabinets, finishing rooms, dipping rooms, spray rooms or spray booths, except that when approved by the Chief of Fire, direct-fired drying ovens or other drying ovens, and direct-fired unit heaters installed not less than eight (8) feet above the floor level and of a type approved for use in garages and airplane hangars, may be installed in finishing rooms where proper safeguards are provided to prevent flammable vapor travel to a source of ignition. Gravity warm air systems shall not be used.
(Ord. No. 991-49. Passed 6-27-49, eff. 6-27-49)
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