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Abstract

A full-scale test program¹ was conducted at the Factory Mutual Research Corporation test facility to determine if existing or new technology fire sprinkler systems are capable of providing acceptable protection for high-piled storage found in warehouses and warehouse-type retail stores. Nine large-scale fire tests were conducted with double-row rack storage arrangements containing a cartoned Group A Unexpanded Plastic commodity. Protection was provided by Extra Large Orifice, 0.64 in. (16 mm), sprinklers installed at the ceiling only. Test variables included: building heights of 22 to 27 ft (6.7 to 8.2 m); storage heights of 14 to 20 ft (4.2 to 6.1 m), in conjunction with ignition location; sprinkler temperature rating; sprinkler discharge density; type of shelving (slatted wood, solid wood or wire mesh); flue spacing; and the presence of draft curtains. Test results show that a 0.60 gpm/ft² (24 mm/min) discharge density supplied over a 2000 ft² (186 m2) design area will protect such storage; and reduced densities may be used under certain specific conditions.

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References

Troup, J.M.A. , "Large-Scale Fire Tests of Rack Stored Group A Plastics in Retail Operation Scenarios Protected by Extra Large Orifice (ELO) Sprinklers," Factory Mutual Research Corporation (FMRC) Technical Report FMRC J.I. 0X1R0.RR, prepared for Group A Plastics Committee, November 1994 .

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Troup, J.M.A. , "Large-Scale Fire Test of a Class IV Commodity Stored in Single-Row Racks with Slatted Wood Shelves," FMRC Technical Report FMRC J.I. 0G3E6.RR/OHOR1.RR, prepared for the Factory Mutual System and the Boeing Company, March 1982.

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Protection of Warehouse Retail Occupancies With Extra Large Orifice (Elo) Sprinklers

Abstract

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