Improving the protective efficiency of elastomeric filter respirators
Keywords:filter respirator, breathing resistance, performance, protective efficiency, exhalation valve
A hypothesis regarding the fact that the protection factor in filter respirators of one protection class should be increased while a decrease in resistance of their filters (without changing the penetration coefficient value) was worked out. Calculations of the protection factor of two produced types of respirators with the different resistance of the filters were performed. It is shown that a decrease in resistance of respirator filters, other things being equal, leads to an increase in their protective efficiency, allowing staff, working in respirators, to reduce the energy required for hard work, as well as increase the usage period of respirators or their usage area in terms of air pollution. The experimental results show that the decrease in resistance of dust respirator filters by three times, other things being equal, leads to an almost double increase in their protective efficiency.
- Warren, R., Zhuang, Z. (1998). Performance Measurements of Half–Facepiece Respirators: Developing Probability Estimates to Evaluate the Adequacy of an APF of 10 American Industrial Hygiene Association Journal, 59 (11), 796–801. doi: 10.1080/15428119891010983
- Kirillov, V. F., Bunchev, A. A., Chirkin, A. V. (2013). O sredstvakh individual'noy zashchity organov dykhaniya rabotayushchikh (obzor literatury). FGBU "NII Meditsiny truda" Rossiyskoy akademii meditsinskikh nauk Meditsina truda i promyshlennaya ekologiya, 4, 25–31.
- Myers, W. R., Zhuang, Z., Nelson, T. (1996). Field Performance Measurements of Half-Facepiece Respirators–Foundry Operations. American Industrial Hygiene Association Journal, 57 (2), 166–174. doi: 10.1202/0002-8894(1996)057<0166:fpmohr>2.0.co;2
- Cohen, H. J. (1984). Determining and validating the adequacy of airpurifying respirators used in industry Part I – Evaluating the Performance of a Disposable Respirator for Protection Against Mercury Vapor. International Society for Respiratory Protection Journal of the International Society for Respiratory Protection, 2 (3), 296–304.
- Galvin, K., Selvin, S., Spear, R. C. (1990). Variability in protection afforded by half–mask respirators against styrene exposure in the field. American Industrial Hygiene Association Journal, 51 (12), 625–639. doi: 10.1080/15298669091370266
- Zhuang, Z, Bradtmiller, B. (2005). Head-and-Face anthropometric survey of U.S. respirator users. Journal of Occupational and Environmental Hygiene, 2 (11), 567–576. doi: 10.1080/15459620500324727
- Campbell, D. L. (1984). The theoretical effect of filter resistance and filter penetration on respirator protection factors. J. Int. Soc. Respir. Prot., 2, 198–204.
- Nelson, T. J., Colton, C. E. (2000). The effect of inhalation resistance on facepiece leakage. AIHAJ, 61 (1), 102–105. doi: 10.1202/0002-8894(2000)061<0102:teoiro>2.0.co;2
- Clayton, M. P., Bancroft, B., Rajan, B. A. (2002). Review of Assigned Protection Factors of Various Types and Classes of Respiratory Protective Equipment with Reference their Measured Breathing Resistances The Annals of Occupational Hygiene, 46 (6), 537–547. doi: 10.1093/annhyg/mef071
- Nicas, M., Neuhaus, J. (2004) Variability in respiratory protection and the assigned protection factor. Journal of Occupational and Environmental Hygiene, 1 (2), 99–109. doi: 10.1080/15459620490275821
- British Standards Institution (1997). BS 4275: Guide to implementing an effective respiratory protective device program. London: British Standards Institution.
- Benjamin, Y., Liu, H., Lee, J.-K. (1993). Haskelle Mullins & Susan G. Danisch. Respirator Leak Detection by Ultrafine Aerosols: A Predictive Model and Experimental Study Aerosol Science and Technology, 19 (1), 15–26.
- Oestenstad, R. K., Dillion, H. K., Perkins, L .L. (1990). Distribution of faceseal leak sites in a half-mask respirator and their association with facial dimensions. American Industrial Hygiene Association Journal, 51 (5), 285–290. doi: 10.1080/15298669091369664
- Krishnan, U., Willeke, K., Juozaitis, A., Lehtimäki, M., Szewczyk, K. (1994). Development of dichotomous flow quantitative fit test for half-mask and full-facepiece respirators. American Industrial Hygiene Association Journal, 55 (3), 223–229. doi: 10.1080/15428119491019069
- Caretti, D. M., Whitley, J. A. (1998). Exercise performance during inspiratory resistance breathing under exhaustive constant load work. Ergonomics, 41 (4), 501–511. doi: 10.1080/001401398186973
- Nelson, T. J., Skretvedt, O. T., Loschiavo, J. G., Dixon, S. W. (1984). Development of an improved qualitative fit test using isoamyl acetate. J. Int. Soc. Respir. Prot., 2 (4), 225–228.
How to Cite
Copyright (c) 2015 Василий Иванович Голинько, Сергей Иванович Чеберячко, Юрий Иванович Чеберячко, Дмитрий Игоревич Радчук
This work is licensed under a Creative Commons Attribution 4.0 International License.
The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.
A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with PC TECHNOLOGY CENTER, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher PC TECHNOLOGY CENTER does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.