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Laser Irradiation as a Rapid Screening Process for the Evaluation of Flame Inhibitors.
For Reference Only At Bureau Libraries :7 pages
Inhibitors are used in coal mines as a precaution against accidental dust explosions. Although rock dust is the usual inhibitor many others have been tested. To facilitate testing, a screening process using laser irradiation was proposed. The procedure includes irradiation of a coal-dust mixture followed by mass-spectrometric analysis of the evolved gases and an evaluation of the flammability characteristics of the gases. Carbonate-type inhibitors decreased the percentage of combustibles in the gases generated, and inhibitors like nacl (thermally stable salts) decreased the total gas generated. A suitable test procedure did not result from the investigation, demonstrating the inadequacy of fast heating, noncombustive techniques in rating inhibitors of coal dust explosions.
For Reference Only At Bureau Libraries
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division