EVALUATION OF MULTILEVEL SPRINKLER SYSTEMS AND CONTAINER MATERIALS FOR FIRE PROTECTION IN HIGH-RACK STORAGE. Page: 12 of 52
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INTRODUCTION
In' recent years, the frequency and magnitude of fires resulting from combustibles stored in
"high-rack" or "high-pile" configurations have caused the insurance underwriters to review
the adequacy of conventional sprinkler systems for fire protection. The insurance
underwriters have obtained sufficient results from full-scale testing to indicate that
above-average water densities are required to control fires where highly flammable
containers are stored in high racks. For the purpose of discussion, "high-rack storage" is
generally considered to be storage on shelves supported in.a structural metal framework.
The shelving material may be a solid, continuous material (either wood or metal); or, it may
be open, such as slotted or expanded metal grating. Solid shelving forms a barrier that
prevents adequate wetting of materials below the shelving from overhead sprinklers and
should be avoided. In some cases, high concentrations of combustibles may require
sprinklers at intermediate levels inside the storage racks themselves.
A part of the effort to improve fire control in the Y-12 Plant has been the incorporation of
intermediate-level sprinkling systems in high-rack storage areas and perforation of the metal
shelving. Since the high-rack areas contain large quantities of plastics and other
combustibles, an investigation of new types of fire control has been conducted. The
objectives of the investigation were: (1) to determine the relative hazards of various types
of container materials, (2) to evaluate the effectiveness of perforated shelves and
intermediate sprinklers, and (3) to determine what alterations, if any, were required in
either the container materials or fire control systems.
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Butturini, W. G.; DeMonbrun, J. R.; McCormick, J. W.; McLaughlin, L. M. & Weathersby, W. E. EVALUATION OF MULTILEVEL SPRINKLER SYSTEMS AND CONTAINER MATERIALS FOR FIRE PROTECTION IN HIGH-RACK STORAGE., report, January 1, 1971; United States. (https://digital.library.unt.edu/ark:/67531/metadc1056893/m1/12/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.