Study of protective properties of half-masks respirators used by miners
V. Holinko,1, S. Cheberiachko1, O. Yavorska1, D. Radchuk 1
1Department of Aerology and Labour Protection, National Mining University, Dnipropetrovsk, Ukraine
Min. miner. depos. 2016, 10(4):29-36
Full text (PDF)
Purpose. To define coefficient of protection of filtering respirators with elastomeric half-masks PR-7 in conditions of coal mines.
Methods. Antidust respirators applied at mining enterprises of Ukraine were tested for determination of their protective efficiency.
Findings. . As a result, it was found that the protection coefficient of the provided half-masks is in the range from 5 to 34. The main reasons of half-masks protective properties deterioration are poor insulating properties of half-masks, their design defects, improper use, application of respirators in case of unacceptably high concentration of dust and also lack of standard sizes of half-masks for operating.
Originality. It has been established that the value of protection coefficient in case of dust content growth due to increasing dust coarse fraction, which in combination with high moisture will quickly fill gaps on an obturation line and thereby will reduce penetration in under mask space of the half-mask.
Practical implications. The received results indicate that the half-mask respirators of the PR-7 type of samples 1 and 4, used by miners, allow to provide effective protection according to DNAOP 0.00-1.04-07 “Regulations of selection and use of personal protection equipment of respiratory organs”, in case of their use up to maximum allowable concentrations 12.
Keywords: respirator, half-mask, coal dust, filter, breath
Cheberyachko, S., Yavorska, O., & Tykhonenko, V. (2015). Effect of Obturation Line on Protective Efficiency of Dust Half-masks. Theoretical and Practical Solutions of Mineral Resources Mining, 319-323.
Dremov, V.I., Nikitenko, E.A., & Mokrousov, B.L. (2005). Prognoz dinamiki riska zabolevaemosti prokhodchikov pnevmokoniozom. Tekhnologicheskaya i ekologicheskaya bezopasnost’, 26-27.
Holinko, V.I., Kolesnyk, V.Ie., & Cheberiachko, S.I. (2015). Doslidzhennia zakhysnoi efektyvnosti protypylovykh respiratoriv pry naiavnosti dodatkovykh vytokiv. Stroitel’stvo, materialovedenie, mashinostroenie, (83), 87-95.
Metodika ispytaniy protivopylevykh respiratorov, primenyaemykh na predpriyatiyakh Minugleproma Ukrainy. (1996). Donetsk: AO “Nadezhda”.
Rajhans, G.S., & Pathak, B.P. (2002). Respirator Types, Uses, and Limitations. Practical Guide to Respirator Usage in Industry, 47-75.
Ross, M.H. (2004). Occupational Respiratory Disease in Mining. Occupational Medicine, 54(5), 304-310..
Scarisbrick, D.A. (2005). Occupational Respiratory Disease in Mining. Occupational Medicine, 55(1), 72-73.
Wallis, G., Menke, R., & Chelton, Ch. (1993). Workplace Field Testing of a Disposable Negative Pressure Half-Mask Dust Respirator (3M 8710). American Industrial Hygiene Association Journal, 54(10), 576-583.