A room in which ribbon-type cellulose, acetate or other safety film is utilized in conjunction with electric arc, xenon or other light-source projection equipment that, when operated, may result in the production of hazardous gases, dust or radiation. It shall be assumed that:
- Visitors and employees are awake, alert and predominantly able to exit without the assistance of others.
- Risk of injury and risk to health assumed by occupants, visitors and employees during their use of the building or structure are predominantly involuntary and low.
- Public expectations regarding the protection afforded those occupying, visiting or working in such a building, structure or portion thereof are neither unusually high nor unusually low.