Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Coal dust explosibility meter.

Authors
NIOSH
Source
Holmes Saf Assn Bull 1997 Oct; :14-15
NIOSHTIC No.
10001186
Abstract
Past research has shown that the accumulation of coal dust in underground coal mines can be rendered nonexplosible by adding sufficient quantities of inert rock dust, such as limestone dust. Federal regulations for underground coal mines require mine operators to dust mine corridors with an inert rock dust and maintain a total incombustible content of at least 65% in the entries and at least 80% in the returns, where the coal dust is expected to be finer in size. Currently, samples of the deposited coal and rock dust are collected for above ground analysis of the inert percentage, which consists of rock dust, ask, and moisture. The processing time for this analysis can be as long as 2 weeks. In addition, research has shown that measuring the incombustible percentage is not always sufficient to determine the explosibility of a sample, especially for finer coal dust. The National Institute for Occupational Safety and Health, Pittsburgh Research Center, has devised a prototype hand held instrument that can provide a direct assessment of the potential explosibility of a coal and rock dust mixture.
Keywords
Coal-dust; Dust-exposure; Mining; Particle-size; Monitoring-systems; Monitors; Explosive-dusts; Explosion-prevention; Mining-industry; Underground-mining; Coal-mining; Dusts; Explosive-hazards
Contact
National Institute for Occupational Safety and Health (NIOSH), Pittsburgh Research Center, Cochrans Mill Rd., P. O. Box 18070, Pittsburgh, PA 15236-0070
Publication Date
19971001
Document Type
Journal Article
Fiscal Year
1998
NTIS Accession No.
NTIS Price
ISSN
0271-3888
NIOSH Division
PRL
Source Name
Holmes Safety Association Bulletin
State
PA
TOP