26 September 2006
Dedicated looped fire water mains must be provided with enough
sectional valves to isolate each sprinkler lateral around the
A secondary fire pump must be provided when a fire pump is
Fire walls separating warehouse and storage fire areas must be of 4-hour fire
rated construction. Other occupancies such as offices and shops must be
separated from the warehouse and storage area by a minimum of one-hour fire
Openings in 4-Hour Rated Fire Walls.
Openings in 4-hour rated fire walls must be protected by 3-hour Class A fire
doors in accordance with NFPA 80, on both sides of the wall. Personnel doors
may be protected by a single Class A fire door. Fire doors must be labeled by an
NRTL, refer to paragraph 2-4.
Conveyor and Mechanical Handling System Penetrations.
When mechanical handling systems such as conveyors are required to penetrate
fire walls, and fire doors are not feasible, the opening must be protected on both
sides of the wall by a deluge water spray tunnel system in accordance with FM
Global Data Sheet 1-23, Protection of Openings in Fire Subdivisions. The deluge
water spray tunnel system must consist of a separate water spray system for
both sides of the opening, and a metal or masonry enclosure around the opening
extending a minimum of 1.5 m (5 ft) from both sides of the wall. The spray
system must consist of open spray nozzles that provide a minimum of 1.356 L/s
per m2 (2.0 gpm/ft2) of opening and must be activated by heat detectors. Any
detector must activate both systems simultaneously. The systems must be
supplied from a separate riser independent of the overhead sprinkler system.
Each system must be equipped with a control valve. The water supply must be
capable of supplying the deluge systems in addition to other required fire
protection demands. Operation of any deluge system or sprinkler system
protecting the area of the handling system must automatically shut down the
Rubber Tire Storage.
Rubber tire storage must comply with NFPA 230, Standard for the Fire Protection
of Storage, and NFPA 13.
Hose Stream Allowance.
Provide a hose stream allowance of 1900 Lpm (500 gpm).