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In-mine study of high-expansion firefighting foam.

Authors
Chasko-LL; Conti-RS; Derick-RL; Krump-MR; Lazzara-CP
Source
Trans Soc Min Metal Explor TP-09-064, 2011 Jan; 328:507-516
NIOSHTIC No.
20038047
Abstract
A mine fire is one of the most challenging safety issues facing a mine operator and can occur at any location underground. The National Institute for Occupational Safety and Health (NIOSH) and the Twentymile Coal Mine, CO, conducted in-mine experiments to determine the capability of high-expansion foam for addressing underground fires. The tests were conducted in sloping entries with high-capacity diesel-powered foam generators. The following results were observed: a well-designed, maintained and properly operated high-expansion foam generator can propagate a foam plug hundreds of feet in steep upward-sloping (20%) multiple entries against a ventilation pressure; stoppings and partitions designed to contain the foam plug in upward-sloping entries must be substantially constructed; and the predicted quantity of foam concentrate can be significantly less than the actual amount used, due to foam losses, such as bubble breakage on dry surfaces. This paper describes the production of high-expansion firefighting foam and discusses the in-mine experimental tests and results.
Keywords
Mining-industry; Fire-safety; Underground-mining; Fire-extinguishing-systems; Fire-extinguishing-agents; Mine-fires; Coal-mining; Author Keywords: Firefighting foam; Foam generators; Underground coal mining
CODEN
TMENAE
Publication Date
20110101
Document Type
Journal Article
Fiscal Year
2011
NTIS Accession No.
NTIS Price
ISSN
1075-8623
NIOSH Division
OMSHR
Source Name
Transactions of the Society for Mining, Metallurgy, and Exploration
State
PA; CO; GA
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