Sprinkler Fire Suppression Algorithm for HAZARD.
Sprinkler Fire Suppression Algorithm for HAZARD.
(971 K)
Evans, D. D.
NISTIR 5254; 21 p. August 1993.
U.S./Japan Government Cooperative Program on Natural
Resources (UJNR). Fire Research and Safety. 12th Joint
Panel Meeting. October 27-November 2, 1992, Tsukuba,
Japan, Building Research Inst., Ibaraki, Japan Fire
Research Inst., Tokyo, Japan, 114-120 pp, 1992.
Available from:
National Technical Information Service
(NTIS), Technology Administration, U.S. Department of
Commerce, Springfield, VA 22161.
Telephone:
1-800-553-6847 or 703-605-6000;
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Order number: PB94-103678
Keywords:
sprinklers; fire suppression; hazard analysis; cribs;
crib fires; fire protection; algorithms
Abstract:
Measurements of the heat release rate of a fully
involved square base wood crib both before and during
fire suppression with water spray from commercial
sprinklers were used to develop a correlation for the
exponential decay time constant of the fire heat release
rate from the value at sprinkler actuation. This
correlation is the basis for prediction of limits for
heat release rates of furnishings during fire
suppression. For 0.61 m square base wood cribs that are
0.61 m in height, the time constant varies with spray
density. Using this result, the time constant for
suppression at a sprinkler spray density of 0.07 mm/s is
410 s.
Building and Fire Research Laboratory
National Institute of Standards and Technology
Gaithersburg, MD 20899