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324 STORAGE AND HANDLING OF FILM [J. S. M. P. E.
the fixed type, with vapor-proof globes and conduit wiring. All switches shall be outside the vault and should be arranged with a small pilot light to indicate on outside of vault whether vault lights are on or off.
(177) Heat. — Heating, when required to prevent sprinkler pipes freezing, shall be by hot water or low pressure steam with automatic control limiting steam pressure to 10 pounds and the vault temperature to not in excess 70 degrees F. Radiators shall be placed at the ceiling, over aisle space with pipes and radiators protected with wire guards so arranged that no film can be placed within 12 inches of such pipes or radiators.
(178) All film in vaults shall be in containers, either in single-roll containers which shall be kept on edge on racks only, except that negatives need not be stored on edge, or in I. C. C. shipping containers which may be kept on the floor. Materials other than film and film cement shall not be stored in the vault.
Section 18. — Handling of Film
(181) Film Shall Be in Containers. — All film shall be kept in closed containers except during the actual time it is being worked upon or examined. This is very essential from the standpoint of fire hazard and safety to life. I. C. C. shipping containers and individual containers for each roll of film with proper corrugations on each side are recommended.
(182) Film shall not be placed or kept under benches, tables, or other surfaces which would shield it from the discharge of sprinklers.
(183) Scrap Film. — Scrap film shall be kept separate from waste paper and other rubbish, and shall be kept under water at all times. It shall be collected from work rooms at least once daily, and removed to a room used for no other purpose, where it shall be kept under water in steel drums with tight covers. These drums shall be disposed of at frequent intervals. Discarded film in full or part rolls shall be kept in vaults. Scrap film shall not be baled or burned.
NOTE. — Motion picture film in the form of clippings and short lengths is in a very hazardous form. Safe precautions in the handling of such scraps are most essential. Baling and burning of film are processes offering a distinct fire hazard. Sending film to a central reclaiming plant in lieu of burning is recommended.
(184) Transportation. — (a) Motion picture film should never be transported in any vehicle or other public conveyance used for the