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A miner's personal carbon monoxide alarm.

Authors
Chilton-JE; Carpenter-CR
Source
IEEE Trans Ind Appl 1989 May/Jun; 25(3):503-508
NIOSHTIC No.
10007245
Abstract
Underground miners may be exposed to hazardous quantities of toxic gases such as carbon monoxide (co) generated from mine fires or explosions. Every underground miner is required to carry a filter self-rescuer (fsr) that, when operated, will remove CO from the miner's breathing air. In addition, all underground miners must have near their work site self-contained self-rescuers (scsr) that, when activated, will supply breathing oxygen. In many situations with fires, miners do not know when to don either self-rescuer, since they have not been informed of a fire in a different mine location. Usually miners do not carry the gas instrumentation necessary for the detection of the toxic, colorless, and odorless fire product carbon monoxide. If each miner carried a personal CO alarm that responds to life-threatening concentrations of CO, the miners would then be alerted to don either the fsr or scsr and exit the mine. For this purpose, a miner's personal CO alarm prototype called pemcoal has been developed by the U.S. Bureau of Mines. The pemcoal unit is small enough to be carried on a miner's belt, has a flashlamp visual alarm, requires no calibration for use, and uses a disk sensor that changes color by reaction with carbon monoxide Pemcoal was tested at concentrations of CO to 1,000 ppm, at temperatures from 5 to 40 deg c, and with several potential mine gas interferents. The pemcoal alarm times are sufficiently fast to warn miners before they are exposed to hazardous quantities of carbon monoxide.
Keywords
Underground-mining; Underground-miners; Miners; Mine-workers; Mining-industry; Gas-detectors; Gases; Air-filters; Air-monitoring; Breathing-atmospheres
CODEN
ITIACR
CAS No.
630-08-0
Publication Date
19890501
Document Type
OP; Journal Article
Fiscal Year
1989
NTIS Accession No.
NTIS Price
Identifying No.
OP 177-89
Issue of Publication
3
ISSN
0093-9994
NIOSH Division
PRC
Source Name
IEEE Transactions on Industry Applications
State
PA
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