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Comparative study of respirator protective efficiency in laboratory and in production environment

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Category: Ecology

Last Updated on Wednesday, 16 July 2014 12:27

Published on Friday, 21 March 2014 15:08

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Authors:

V.I. Golinko, Dr. Sci. (Tech.), Professor, State Higher Educational Institution “National Mining University”, Professor of the Aerology and Labor Protection Department, Dnipropetrovsk, Ukraine.

S.I. Cheberiachko, Cand. Sci. (Tech.), Associate Professor, State Higher Educational Institution “National Mining University”, Senior Lecturer of the Department of Aerology and Labour Protection, Dnepropetrovsk, Ukraine

Yu.I. Cheberiachko, Cand. Sci. (Tech.), Associate Professor, State Higher Educational Institution “National Mining University”, Senior Lecturer of the Department of Aerology and Labour Protection, Dnepropetrovsk, Ukraine

M.M. Naumov, State Higher Educational Institution “National Mining University”, postgraduate student, Dnepropetrovsk, Ukraine

Abstract:

Purpose. To carry out laboratory and in the field studies on the dust respirator protective efficiency improvement.

Methodology. Laboratory estimation of the penetration coefficient of the dust filtering respirators has been carried out by the method described in DSTU EN 143-2002. In the field estimation of the dust concentration in the air before and after filtering by the respirator has been carried out according to the guidelines “Manual on dust Concentration and Dust Load Estimation in Mines.”

Findings. The respirator protective efficiency in production environment is high at the start of its use. Its performance is commeasurable with the same in laboratory environment when air leaks-in through the shutter. But sooner or later the dust accumulation, breathing resistance increase, sleeping of half-mask and necessity to talk during the work lead to its degradation due to the unfiltered air inflow through the shutter contact line leak.

Originality. Authors have determined that the respirator penetration coefficient degrades as the dust content rises because of sharp reduction of the size of filter pore spaces caused by deposition of coarse particles of coal dust between the fibers, breathing resistance increase and additional dust inflow through shutter contact line.

Practical value. Authors have determined main causes of the respirator protective efficiency degradation in the production environment of coal mines.

References:

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Golinko, V.I., Cheberiachko, S.I., Kolesnik, V.Ye. and Ishchenko, A.S. (2004), “Analysis and estimation of respirator protective efficiency”, Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 12, pp. 33–36.

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