415.5.1 Storage.

An approved manual emergency alarm system shall be provided in buildings, rooms or areas used for storage of hazardous materials. Emergency alarm-initiating devices shall be installed outside of each interior exit or exit access door of storage buildings, rooms or areas. Activation of an emergency alarm-initiating device shall sound a local alarm to alert occupants of an emergency situation involving hazardous materials.

415.5.2 Dispensing, use and handling.

Where hazardous materials having a hazard ranking of 3 or 4 in accordance with NFPA 704 are transported through corridors, interior exit stairways or ramps, or exit passageways, there shall be an emergency telephone system, a local manual alarm station or an approved alarm-initiating device at not more than 150-foot (45 720 mm) intervals and at each exit and exit access doorway throughout the transport route. The signal shall be relayed to an approved central, proprietary or remote station service or constantly attended on-site location and shall initiate a local audible alarm.

415.5.3 Supervision.

Emergency alarm systems shall be supervised by an approved central, proprietary or remote station service or shall initiate an audible and visual signal at a constantly attended on-site location.

415.5.4 Emergency alarm systems.

Emergency alarm systems shall be provided with emergency power in accordance with Section 2702.

415.6 Fire separation distance.

Group H occupancies shall be located on property in accordance with the other provisions of this chapter. In Groups H-2 and H-3, not less than 25 percent of the perimeter wall of the occupancy shall be an exterior wall.

   Exceptions:

      1.   Liquid use, dispensing and mixing rooms having a floor area of not more than 500 square feet (46.5 m 2 ) need not be located on the outer perimeter of the building where they are in accordance with the New York City Fire Code and NFPA 30.

      2.   Liquid storage rooms having a floor area of not more than 1,000 square feet (93 m 2 ) need not be located on the outer perimeter where they are in accordance with the New York City Fire Code and NFPA 30.

      3.   Spray paint booths that comply with the New York City Fire Code need not be located on the outer perimeter.

415.6.1 Group H occupancy minimum fire separation distance.

Regardless of any other provisions, buildings containing Group H occupancies shall be set back to the minimum fire separation distance as set forth in Sections 415.6.1.1 through 415.6.1.4. Distances shall be measured from the walls enclosing the occupancy to lot lines, including those on a public way. Distances to assumed lot lines established for the purpose of determining exterior wall and opening protection are not to be used to establish the minimum fire separation distance for buildings on sites where explosives are manufactured or used when separation is provided in accordance with the quantity distance tables specified for explosive materials in the New York City Fire Code.