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Mining Publication: Evaluation of Smoke Detectors for Use in Underground Mines

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February 2009

Image of publication Evaluation of Smoke Detectors for Use in Underground Mines

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.

Authors: CD Litton

Conference PaperFebruary - 2009

  • Adobe Acrobat - Portable Document Format (.PDF)

    0.49 MB

NIOSHTIC2 Number: 20035041

2009 SME Annual Meeting and Exhibit, February 22-25, Denver, Colorado, preprint 09-072. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2009; :1-8

 
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