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502.16.2 Operation.
The mechanical ventilation system shall operate continuously.
Exceptions:
1. Mechanical ventilation systems that are interlocked with a gas detection system designed in accordance with the New York City Building Code.
2. Mechanical ventilation systems in garages that are used only for the repair of vehicles fueled by liquid fuels or odorized gases, such as CNG, where the ventilation system is electrically interlocked with the lighting circuit.
502.17 Tire rebuilding or recapping.
Each room where rubber cement is used or mixed, or where flammable or combustible solvents are applied, shall be ventilated in accordance with the applicable provisions of NFPA 91.
502.17.1 Buffing machines.
Each buffing machine shall be connected to a dust-collecting system that prevents the accumulation of the dust produced by the buffing process.
502.18 Specific rooms.
Specific rooms, including bathrooms, locker rooms, smoking lounges and toilet rooms, shall be exhausted in accordance with the ventilation requirements of Chapter 4.
502.19 Indoor firing ranges.
Ventilation shall be provided in an approved manner in areas utilized as indoor firing ranges. Firing ranges shall comply with all applicable laws and the requirements of the New York City Department of Health and Mental Hygiene.
502.20 Manicure and pedicure stations.
Manicure and pedicure stations shall be provided with an exhaust system in accordance with Table 403.3.1.1, Note h. Manicure tables and pedicure stations not provided with factory-installed exhaust inlets shall be provided with exhaust inlets located not more than 12 inches (304.8 mm) horizontally and vertically from the point of chemical application.
502.21 Domestic kitchen exhaust systems.
In all Group R occupancies, a minimum of No. 18 Gage galvanized sheet metal shall be used, except that ductwork that complies with Section 603.6.1.2 shall be permitted for independent apartment exhaust systems providing general exhaust ventilation of kitchen and toilet areas.
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