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A comparison of mine fire sensors.

Authors
Conti-RS; Litton-CD
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9572, 1995 Jan; :1-10
NIOSHTIC No.
20022706
Abstract
This U.S. Bureau of Mines (USBM) report discusses the results of research conducted in the USBM experimental mine at its Lake Lynn Laboratory to determine the alarm times of smoke and carbon monoxide (CO) sensors, and a point type heat sensor (PTHS) to slowly developing coal-conveyor belt fires. The tests were conducted at air velocities of 0.44 and 0.97 m/s. The data clearly indicate that smoke sensors provide earlier warning of fire than 10 ppm CO sensors, and that 10 ppm CO sensors provide earlier warning than PTHS. A success rate of 1.0 (indicating detection of every test fire) was obtained for both smoke and CO sensors. For the PTHS, the success rate was 0.57 at the lower air velocity, decreasing to 0 at the higher air velocity. Data are also presented showing the sequence of fire events and detection events at the two air velocities as a function of time. Results show that early detection and warning of underground mine fires will improve the probability of miners' escape.
Keywords
Mining-industry; Underground-mining; Mine-fires; Fire-detection; Coal-mining
Contact
Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
CAS No.
630-08-0
Publication Date
19950101
Document Type
Report of Investigations
Fiscal Year
1995
NTIS Accession No.
PB96-115233
NTIS Price
A03
Identifying No.
RI-9572
ISSN
1066-5552
NIOSH Division
PRC
Priority Area
Other Occupational Concerns
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9572
State
PA
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