This article applies to the storage and handling of cellulose nitrate motion-picture film, hereafter referred to as "nitrate film." Film having a cellulose acetate or other approved slow-burning base, marked "safety film," is exempt from these provisions.
A. 
No person shall store, keep or have on hand more than 25 pounds (for thirty-five millimeter film, about 5,000 feet) of nitrate motion-picture film without a permit.
B. 
No person shall sell, lease or otherwise dispose of any nitrate motion-picture firm to any person not having a permit to handle, use or display such film.
A. 
Motion-picture projectors shall not be operated with cellulose nitrate motion-picture film except when located in approved enclosures having all projection openings protected with approved gravity shutters and ventilated in accordance with the requirements of Subsections B, C and D of this section.
B. 
Ventilation shall be provided by one or more mechanical exhaust systems which shall draw air from each arc lamp housing and from one or more points near the ceiling. Systems shall exhaust to outdoors either directly or through a noncombustible flue used for no other purpose. Exhaust capacity shall not be less than 15 nor more than 50 cubic feet per minute for each arc lamp housing plus 200 cubic feet per minute for the room itself. Systems shall be controlled from within the enclosure and have pilot lights to indicate operation. An exhaust system serving a projection room may be extended to cover rooms associated therewith, such as rewind rooms. No dampers shall be installed in such exhaust systems. Ventilation of these rooms shall not be connected in any way with ventilating or air-conditioning systems serving other portions of the building.
C. 
Exhaust ducts shall be of noncombustible material and shall be kept one inch from combustible material or be covered with 1/2 inch of noncombustible heat insulating material.
D. 
Fresh-air intakes other than those directly from the open air shall be protected by approved fire shutters arranged to operate automatically with the port shutters.
E. 
Provision shall be made so that auditorium lights can be turned on from the inside of the projection room and from at least one other convenient point in the building.
A. 
Rewinding of nitrate films shall be performed either in a special rewind room at an approved location or in a projection room. An approved can for scrap film having a self-closing hinged cover shall be provided.
B. 
Nitrate film in any projection room or rewinding room shall be kept as follows:
(1) 
Up to 40 pounds of film (8,000 feet of thirty-five millimeter film) may be kept in ICC shipping containers or approved cabinet in each room.
(2) 
If the amount of film on hand exceeds 40 pounds, an approved cabinet shall be provided in which the amount of film in excess of 40 pounds shall be kept.