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The effect of ventilation on the performance of automatic sprinkler systems.

Authors
Ryan-MW; Smith-AC; Lazzara-CP
Source
Proceedings of the 6th US mine ventilation symposium, June 21-23, 1993, Salt Lake City, Utah. Bhaskar R, ed. Littleton, CO: Society for Mining, Metallurgy, and Exploration, 1993 Jun; :345-350
Link
NIOSHTIC No.
10004296
Abstract
The U.S. Bureau of Mines conducted a study to evaluate the effect of ventilation on the performance of automatic sprinkler systems in extinguishing wood crib fires. Experiments were conducted at airflows of 0, 0.76, 1.5, 2.5, and 4.1 m/s. Two experiments were conducted at each airflow, using 74 C fast response pendent sprinklers in one experiment and 74 C fast response horizontal sidewall sprinklers in the other experiment. In the experiments at airflows of 0 and 0.76 m/s, sprinklers were located directly above the fire and 2.4 m upstream and downstream of the fire. The sprinkler directly above the fire was the only sprinkler to operate with no discernible difference in the suppression capability of the pendent and horizontal sidewall sprinklers. In the experiments at airflows of 1.5 and 2.5 m/s, sprinklers were located directly above the fire and 2.4 and 4.8 m downstream of the fire. The sprinkler located 2.4 m downstream was the only sprinkler to operate with the horizontal sidewall sprinkler being more effective in extinguishing the wood crib fire. The average response times of the sprinklers at airflows of 0.76, 1.5, and 2.5 m/s were 3-1/2 times the average response time of the sprinklers at 0 m/s. The results of this study will help enhance the safety of the nation's miners.
Publication Date
19930601
Document Type
Conference/Symposia Proceedings
Editors
Bhaskar-R
Fiscal Year
1993
NTIS Accession No.
NTIS Price
ISBN No.
9780873351188
Identifying No.
OP 181-93
NIOSH Division
PRC
Source Name
Proceedings of the 6th US mine ventilation symposium, June 21-23, 1993, Salt Lake City, Utah
State
PA
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