✦ LIBER ✦

Practical aspects of dust deflagration testing

✍ Scribed by L.G. Britton; S. Chippett

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 1014 KB
Volume: 2
Category: Article
ISSN: 0950-4230
DOI: 10.1016/0950-4230(89)80021-x

No coin nor oath required. For personal study only.

✦ Synopsis

A test procedure is outlined for determination of dust Kn values. The effects of test variables and sample variables are described. The results are discussed in relation to vent relief design via the nomograph method, which is based on the assumption that dusts of equal KS require equal areas of vent relief. It is shown that applicable Kti values can only be measured if 'standard' dust samples are available to calibrate the test equipment; the standard deviations should be considered when applying the data. The accuracy of the 'cubic law' is discussed for dusts and gases. Turbulent K, values for methane and propane are reported under the conditions of turbulence used for 'standardized' dust testing. The effect of accumulation of fines or additives in plant equipment is discussed in relation to ease of dust ignition.

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