MOTION PICTURE PROJECTORS

A. General 540-1. Scope. The provisions of this article apply to motion picture projection rooms, motion picture projectors, and associated equipment of the professional and nonprofessional types using incandescent, carbon arc, xenon, or other light source equipment that develops hazardous gases, dust, or radiation. (FPN): For further information, see Storage and Handling of Cellulose Nitrate Motion Picture Film, NFPA 40-1988 (ANSI). B. Definitions 540-2. Professional Projector: The professional projector is a type using 35-or 70-millimeter film that has a minimum width of 13/8 inches (35 mm) 70-582 NATIONAL ELECTRICAL CODE and has on each edge 5.4 perforations per inch, or a type using carbon arc, xenon, or other light source equipment that develops hazardous gases, dust, or radiation. 540-3. Nonprofessional Projector: Nonprofessional projectors are those types other than described in Section 540-2. C. Equipment and Projectors of the Professional Type 540-10. Motion Picture Projection Room Required. Every professionaltype projector shall be located within a projection room. Every projection room shall be of permanent construction, approved for the type of building in which the projection room is located. All projection ports, spotlight ports, viewing ports, and similar openings shall be provided with glass or other approved material so as to completely close the opening. Such rooms shall not be considered as hazardous (classified) locations as defined in