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Water Barriers for Suppressing Coal Dust Explosions.

Authors
Liebman-I; Corry-J; Richmond-JK
Source
NTIS: PB 258 110 :26 pages
Link
NIOSHTIC No.
10000097
Abstract
The Bureau of Mines developed three types of passive water barriers for suppressing slow-moving coal dust explosions. One type is a modification of a conventional tub barrier and depends on the dynamic pressure generated ahead of an explosion to tilt the tub to release its water and suppress the explosion. The other two barriers operate in response to an increase in static pressure developed ahead of the explosion. Tests indicate the first barrier begins to release its water at air speeds as low as 50 ft/sec, and the second and third barriers will operate at a rise in static pressure as little as 0.5 Psi. All three barriers were found to be effective in suppressing coal dust explosions propagating at speeds as low as 100 ft/sec. A plan is described for installing a water barrier in a working mine on a trial basis.
Publication Date
19760101
Document Type
IH;
Fiscal Year
1976
NTIS Accession No.
PB-258110
NTIS Price
A03
Identifying No.
RI 8170
NIOSH Division
PRC;
Source Name
NTIS: PB 258 110
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