NFPA 40-2001 Standard for the Storage and Handling of Cellulose Nitrate Film.
4.5 Tables and Racks. 4.5.1 Tables and racks that are used in connection with the handling of film (e.g., joining, inspection, and assembly tables) shall be noncombustible or ofwood construction with no member less than 38 mm (1 1 ⁄ 2 in.) in least dimension. 4.5.2 Tables shall not have racks or shelves beneath them. 4.5.3 Tables and racks shall be keptatleast10 cm (4 in.) away from any radiator or heating apparatus. 4.6 Electrical Equipment. 4.6.1 All electrical wiring and equipment shall comply with NFPA 70, National Electrical Code ® , for Class I, Group D, Divi- sion 2 locations. The temperature rating of electrical equip- ment shall be Class T6. 4.6.2 Motors shall be located or arranged so that film cannot come in contact with them. 4.7 Heating, Cooling, and Refrigeration Equipment. 4.7.1 Artificial heating in any building or room in which ni- trate film is handled or stored, other than a vault, shall be restricted to hot water or steam not exceeding gauge pressure of103 kPa (15 psig). Approved electric steam radiators operating at pres- sures not exceeding gauge pressure of 103 kPa (15 psig) and protected with wire mesh guards shall be permitted to be used ifthey are ofthe fixed (nonportable) type.
5.1* Automatic Sprinklers. 5.1.1 The purpose ofthis protection is to prevent fire or heat from affecting storage that is not initially involved in a fire. 5.1.2 Every room, except projection booths and rewinding rooms, where nitrate film is stored or handled in quantities greater than 23 kg [51 lb (10 standard rolls)] shall be pro- tected by an automatic sprinkler system that is installed in ac- cordance with the requirements for Group II extra hazard oc- cupancies of NFPA 13, Standard for the Installation ofSprinkler Systems. 5.1.3 Protection for areas other than film cabinets and vaults shall utilize automatic sprinklers. Protection for film cabinets and vaults, extended term storage or other than extended term storage, shall be permitted to utilize an automatic sprin- kler system or a deluge system using fixed spray nozzles or open sprinklers. 5.1.4 In areas or rooms where nitrate film is handled, the area thatis protected persprinklerhead shall notexceed 6 m 2 (64 ft 2 ) with sprinklers not being over 2.4 m (8 ft) apart. 5.2 Water Supplies. 5.2.1 Water supplies that are acceptable to the authority hav- ing jurisdiction shall be provided. 5.2.2 Water supplies for automatic sprinklers shall be based on 1.26 L/sec (20 gpm) per sprinkler for 20 minutes for the total number ofsprinklers in one vault, plus 25 percent ofthe sprinklers in the communicating fire area. 5.3* Portable Fire Extinguishers. Every room in which nitrate film is stored or handled shall be provided with portable fire extinguishers oftypes using water or water solutions. Exception: Film vaults shall not be required to comply with this provision.NFPA 40 pdf download.