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Motion picture projectors shall be exhausted in accordance with Section 18-28-502.10.1 or 18-28-502.10.2.
Projectors without an exhaust connection shall have contaminants exhausted through a mechanical exhaust system. The exhaust rate for electric arc projectors shall be a minimum of 200 cubic feet per minute (cfm) (0.09 m
3
/s) per lamp. The exhaust rate for xenon projectors shall be a minimum of 300 cfm (0.14 m
3
/s) per lamp. Xenon projector exhaust shall be at a rate such that the exterior temperature of the lamp housing does not exceed 130°F (54°C). The lamp and projection room exhaust systems, whether combined or independent, shall not be interconnected with any other exhaust or return system within the building.
Enclosed structures involving organic coating processes in which Class I liquids are processed or handled shall be ventilated at a rate of not less than 1 cfm/ft
2
[0.00508m
3
/(s x m
2
)] of solid floor area. Ventilation shall be accomplished by exhaust fans that intake at floor levels and discharge to a safe location outside the structure. Noncontaminated intake air shall be introduced in such a manner that all portions of solid floor areas are provided with continuous uniformly distributed air movement.
Mechanical exhaust systems for public garages, as required in Article 4, Ventilation, shall operate continuously or in accordance with Section 18-28-403.13, Public Garages.
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