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Diagnostics of Sealed Coal Mine Fires.

Authors
Kuchta-JM; Furno-AL; Dalverny-LE; Et Al
Source
MISSING :25 pages
Link
NIOSHTIC No.
10002529
Abstract
The Bureau of Mines investigated four simulated coal gob fires to obtain a more reliable data base for defining the state of a sealed mine fire and to evaluate the performance of various fire detectors. The fires were conducted in a multiple-entry section of the Bruceton Experimental Mine by heating 4,000 to 21,000 pounds of rubblized bituminous coal to ignition and monitoring the temperature, gas emissions, and smoke under ventilated and sealed combustion conditions. Product gas concentrations depended upon the coal bed size, coal temperature, heating rate, and oxygen concentration or ventilating condition but varied little after the fires were sealed. Expressions are given that define the temporal variations of CO and o2 after sealing when the coal temperature decreased rapidly. The best detector for determining the state of a mine fire after it has been sealed was a prototype submicrometer smoke particulate sensor. Limitations of the various detector systems are also discussed.
Publication Date
19820101
Document Type
IH;
Fiscal Year
1982
NTIS Accession No.
NTIS Price
Identifying No.
RI 8625
NIOSH Division
PRC;
Source Name
MISSING
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