Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Performance of automatic sprinkler systems for extinguishing incipient and propagating conveyor belt fires under ventilated conditions.

Authors
Smith-AC; Pro-RW; Lazzara-CP
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9538, 1994 Nov; :1-20
Link
NIOSHTIC No.
20039209
Abstract
The U.S. Bureau of Mines conducted a study to evaluate the effectiveness of automatic water sprinkler systems on the suppression of incipient and propagating conveyor belt fires under ventilated conditions. Large-scale experiments were performed in a fire gallery at airflows ranging from 1.1 to 4.6 m/s. In incipient fire experiments, with 100 C, standard response sprinklers installed above and between the two strands of belting, the results showed that the sprinklers activated later, the peak heat release rates were larger, and more belting was consumed at the higher airflow. In similar experiments with 74 C, fast response sprinklers, the sprinklers activated at the same heat release rate for both high and airflows, but the peak heat release rate and amount of belt consumed was slightly higher at the lower airflow. In incipient fire experiments with sprinklers located only above the top belt, the heat release rate and amount of belt consumed was larger at the higher airflow. The propagating fire experiments showed that sprinklers located above and between the belts were effective in stopping flame propagation. Peak heat release rates and amount of belt consumed were larger at the higher airflows for both the 74 C, fast response and 100 C, standard response sprinklers. The sprinklers were equally effective at each airflow.
Keywords
Fire-extinguishers; Fire-protection; Ventilation; Fires; Mine-hazards; Fire-fighting; Mining-equipment; Air-flow; Flame-propagation; Fire-suppression; Sprinklers; Belt-conveyors; Mines-Excavations
Publication Date
19941101
Document Type
Report of Investigations
Fiscal Year
1995
NTIS Accession No.
PB95-200879
NTIS Price
A03
Identifying No.
RI-9538
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9538
State
PA
TOP