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Evaluation of smoke detectors for use in underground mines.

Authors
Litton-CD
Source
2009 SME Annual Meeting and Exhibit, February 22-25, Denver, Colorado, Preprint 09-072. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2009 Feb; :1-8
Link
NIOSHTIC No.
20035041
Abstract
Laboratory experiments were conducted to determine the responses of a prototype smoke detector and a commercially available photoelectric smoke detector to smoke particles generated from various combustion sources. The prototype smoke detector combines optical scattering measurements with ionization chamber measurements in order to reduce/eliminate nuisance alarms due to the presence of airborne dusts or diesel exhaust particles. The commercially available smoke detector is designed for use in harsh environments where airborne dust represents a major problem due both to nuisance alarms and detector contamination. In the experiments, the responses of the two detectors were measured when exposed to smoke particles from the exhaust of a diesel engine and from a variety of fire sources, including wood, coal, styrene butadiene rubber, and No. 2 diesel fuel. For the solid fuels, data were obtained for both smoldering and flaming combustion. This report describes the experiments, their results, and the use of these results as they apply to early-warning fire sensors capable of the rapid and reliable detection of fires in atmospheres that may or may not be contaminated by either airborne dust or the products produced from diesel engines. Subsequent to these laboratory experiments, six smoke detectors were installed in an underground limestone mine for further testing and evaluation.
Keywords
Monitoring-systems; Monitors; Mining-industry; Fire-safety; Underground-mining
Publication Date
20090222
Document Type
Conference/Symposia Proceedings
Fiscal Year
2009
NTIS Accession No.
NTIS Price
NIOSH Division
PRL
Source Name
2009 SME Annual Meeting and Exhibit, February 22-25, Denver, Colorado, Preprint 09-072
State
PA; CO
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