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The ventilation of spray booths and spray areas shall comply with the provisions of Chapter 13-176 of this Code and with the following:
(a) All spraying areas shall be provided with positive, mechanical ventilation adequate to prevent the dangerous accumulation of vapors and to safely remove such vapors to a safe location.
(b) Such mechanical ventilation shall be kept in operation at all times while the spraying operations are being conducted and for a sufficient time thereafter to allow vapors from drying coated articles and finishing material residues to be exhausted.
(c) Each spray booth shall have an independent exhaust duct system discharging to the building exterior and shall comply with the ventilation requirements of this Code. Multiple-cabinet spray booths in which identical spray-finishing materials is used with a combined frontal area of not more than 18 square feet, may have a common exhaust. If more than one fan serves one booth, all fans shall be so interconnected that one fan cannot operate without operating all.
(d) Electric motors driving exhaust fans shall not be placed inside of booths or ducts. Fan rotating element shall be nonferrous or nonsparking or the casing shall consist of or be lined with such material.
(e) Belts shall not enter the booth or ducts unless such belts and pulleys within the booth or ducts are tightly enclosed.
(f) Exhaust ducts shall be constructed of steel and shall be substantially supported. Readily accessible cleanout openings shall be provided.
(g) Exhaust ducts shall have a clearance from unprotected combustible construction or material of not less than 18 inches. If such combustible construction is provided with the following protection applied to all surfaces within 18 inches, clearances may be reduced to the clearances indicated:
1. 28-gauge sheet metal or one-fourth-inch asbestos mill-board.....12 inches
2. 28-gauge sheet metal or one-eighth-inch asbestos mill-board spaced out one inch on noncombustible spacers.....9 inches
3. 22-gauge sheet metal or one-inch rockwool batts reinforced with wire mesh or the equivalent.....3 inches
4. Air exhaust from spraying operation shall not be recirculated.
(Prior code § 129.1-55)
Notes
| 13-176 | The hyper-linked material is not part of the Chicago Building Code infobase and therefore is not included herein. The material is included in other provisions of the Chicago Municipal Code. The complete Chicago Municipal Code is available for purchase from American Legal Publishing in both print and Folio® versions. Please click here for the appropriate American Legal order form in printable Adobe® PDF format. For additional information, you may visit American Legal's website by clicking here. |
The storage and handling of flammable liquids used in connection with paint spraying shall conform to the requirements of Section 15-24-410 and other applicable chapters of this Code, and with the special provisions of the following:
(a) When the quantity of flammable liquids used in spraying, in five-gallon and smaller containers, other than in original sealed containers or approved safety cans, exceeds a total of ten gallons, it shall be stored in a metal cabinet and when the total quantity exceeds 50 gallons of such flammable liquid, a room complying with Section 15-24-410 shall be required.
(b) Only original closed containers, approved portable tanks, approved safety cans or a properly arranged system of piping shall be used for bringing flammable liquids into spray-painting areas.
(c) Containers supplying spray nozzles shall be of the closed type. Containers not resting on floors shall be on noncombustible supports or suspended by wire cables.
(d) All containers or piping to which is attached a hose or flexible connection shall be provided with a quick-closing valve and equipped with a weight and a fusible link, arranged to automatically close the valve in the event of a fire. Such valves shall be closed when not in use.
(e) Heaters shall not be located in the spray booth or area or other locations subject to the accumulation of combustible deposits or residue.
(f) If flammable liquids are supplied to spray nozzles by positive displacement pumps, the pump discharge line shall be provided with an approved relief valve discharging to the pump suction or to a safe detached location, or a device shall be provided to stop the prime moved when the discharge pressure exceeds 125 percent of the normal operating pressure.
(g) Whenever flammable liquids are transferred from one container to another, both containers shall be bonded or effectively grounded. Piping systems for flammable liquids shall be permanently grounded.
(Prior code § 129.1-56)
For automatic sprinkler requirements, see Chapter 15-16.
(Prior code § 129.1-57)
The operation and maintenance of paint spray operations shall also comply with the following:
(a) All spray areas shall be kept as free from the accumulations of deposits of combustible residues as practical with cleaning conducted daily.
(b) Scrapers, spuds, or other such tools used for cleaning purposes shall be of nonsparking material.
(c) Residue scrapings and debris contaminated with residue shall be immediately removed from the premises and properly disposed of.
(d) The use of flammable solvents for cleaning operations shall be restricted to those having a flashpoint of not less than 100 degrees Fahrenheit closed cup tester except that solvents with flashpoints not less than those normally used in spraying operations may be used for cleaning spray nozzles and auxiliary equipment, provided such cleaning is conducted inside spray booths and ventilating equipment is operating during cleaning periods.
(e) Spray booths shall not be alternately used for different types of coating materials, where the combination of the materials may be conducive to spontaneous ignition, unless all deposits of the first used material are removed from the booth and exhaust ducts prior to spraying with the second coating material.
(Prior code § 129.1-58)
Motor vehicle undercoating operations shall comply with the following provisions:
(a) When certified by the bureau of ventilation that the premises comply with all applicable provisions of Chapter 13-176 and when undercoating materials and solvents having a flashpoint not lower than 100 degrees Fahrenheit closed cup testers are used, motor vehicle undercoating spray operations may be exempt from this Code relating to spraying operations on the express approval of the fire commissioner.
(b) Undercoating spray operations not conforming with paragraph (a) of this section shall be subject to all applicable provisions of this Code.
(Prior code § 129.1-59; Amend Coun. J. 5-18-16, p. 24131, § 146)
Notes
| 13-176 | The hyper-linked material is not part of the Chicago Building Code infobase and therefore is not included herein. The material is included in other provisions of the Chicago Municipal Code. The complete Chicago Municipal Code is available for purchase from American Legal Publishing in both print and Folio® versions. Please click here for the appropriate American Legal order form in printable Adobe® PDF format. For additional information, you may visit American Legal's website by clicking here. |
Electrostatic paint spray and deterring apparatus shall conform to the requirements of Chapter 15-24 for the provisions of paint spraying and to the specific requirements of the following:
(a) Electrostatic apparatus and devices used in connection with paint-spraying and paint-deterring operations shall be only of the approved type.
(b) Transformers, power packs, control apparatus and all other electrical portions of the equipment, with the exception of high voltage grids and electrostatic atomizing heads and their connections, shall be located outside of the spraying areas or vapor areas as defined in Section 15-24-550 or shall comply with the requirements of Section 14E-5-500 for Class II hazardous locations.
(c) Electrodes and electrostatic atomizing heads shall be of substantial construction, shall be rigidly supported in permanent locations and shall be effectively insulated from ground. Insulators shall be nonporous and noncombustible.
(Prior code § 129.1-60; Amend Coun. J. 9-6-17, p. 55278, Art. II, § 54)
All electrostatic paint spray apparatus shall conform to the requirements of Title 14E and with the following specific requirements:
(a) A space of at least twice the sparking distance shall be maintained between goods being painted or deterred and electrodes, electrostatic atomizing heads or conductors. A suitable sign indicating such distance shall be conspicuously posted.
(b) Electrostatic apparatus shall be equipped with automatic controls which will operate without time delay, to disconnect the power supply to the high voltage transformer and to signal the operator under any of the following conditions:
1. Stoppage of the ventilating fans or failure of the ventilating equipment from any cause;
2. Stoppage of the conveyor carrying goods past the high-voltage grid;
3. Occurrence of a ground or of an imminent ground at any point on the high-voltage system;
4. Reduction of the clearance below that specified in Section 15-24-690.
(Prior code § 129.1-61; Amend Coun. J. 9-6-17, p. 55278, Art. II, § 55)
The following shall also apply to electrostatic spray painting apparatus and operations:
(a) Adequate booths, fencing, railings or guards shall be so placed about the equipment that they, either by their location or character or both, assure that a safe isolation of the process is maintained from plant storage and personnel. Such railings, fencing and guards shall be conducting material adequately grounded and shall be at least five feet from the processing equipment.
(b) Signs designating the process as dangerous in regard to fire and accident shall be posted. Such signs shall have a white field with red letters at least four inches high with at least one-half-inch stroke. Such signs shall read as follows: “Electrical and Fire Hazard – Keep Away – Only Authorized Personnel Permitted”.
(c) All insulators shall be kept clean and dry.
(d) Drip plates and screens subject to paint deposits shall be removable and shall be taken to a safe place for cleaning.
(Prior code § 129.1-62)
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