ASSESSMENT OF IMPACT OF EXHALATION VALVE RESISTANCE IN RESPIRATORS ON HUMAN PERFORMANCE

Details

Parent Category: Geo-Technical Mechanics, 2014

Category: Collection of scientific papers «Geotekhnicheskaya Mekhanika» Issue 117

UDC 614.89

Author:

Cheberyachko Y. I ., Ph.D. (Tech.) (State H E I «NMU»)

Abstract.

Interdependence between the workers’ performance at constant load and different levels of exhalation valve resistance. Studies on estimating an impact of pressure drop at the phase of air breathing out from the personal respiratory protection equipment on functional state of a person were conducted by a standard method according to GOST 12.4.061-88 "Method for Determining Performance of a Man Having a Personal Protective Equipment On".

Correlation between the worker’s performance at constant load and different levels of exhalation resistance was specified. It is stated that, when a man is performing a continuous work by  running on the treadmill, increasing level of exhalation resistance leads to linear decrease of the man’s performance.

It is further stated  that inhalation resistance affects 2 - 3 times more on the functional state of a man than exhalation resistance, thus, limitation of exhalation resistance levels only can provide such decrease of the man’s performance which would be acceptable for fulfilling the given jobs. Therefore, in order to design proper filter respirators, information on impact of filter breathing resistance on the workers’ performance is required.

Keywords:

 filter respirator, breathing resistance, performance, safety performance, exhalation valve.

References:

1. Kaminsky, S.L. (2006), “Rating ergonomic properties imported inputs personal respiratory protection”, Fiziologicheskie voprosy okhrany truda, vol. 3, pp.66-73.

2. Cheberyachko, S.I. and Cheberyachko, Y.I. (2007) “Assessing the impact of personal respiratory protection to human performance”, Naukovyi visnyk Natsionalnogo hirnychogo universytetu, vol 7, pp. 60-63.

3. Golinko, V.I., Cheberyachko, S.I. and Cheberyachko, Yu.I. (2008), Zastosuvannya respiratoriv na vugilnikh i girnychorudnikh pidpriemstvakh [The use of respirators in the coal and mining companies], SHEI «NMU», Dnepropetrovsk, Ukraine.

4. Caretti, D.M. and Whitley, J.A. (1998), “Exercise performance during inspiratory resistance breathing under exhaustive constant load work”, Ergonomics, no. 41, pp.501-511.

5. Johnson, A.T., Scott, W.S. and Lausted, C.G. (1999), “Effect of Respirator Inspiratory Resistance Level on Constant Load Treadmill Work Performance”, Аmerican Industrial Hygiene Association Journal,  vol. 60(4), pp. 474-479.

6. Shevchenko, V.G. (2014) “Research of changes in rates of miners by various manufacturing operations”, GeotekhnicheskayaMekhanika[Geo-Technical Mechanics], no. 115, pp. 86-93. 

About the author:

Cheberyachko Yuriy Ivanovich, Candidate of Technical Sciences (Ph.D), Associate Professor of department Aerology and protection of labour, State Higher Education Institution «National Mining University» (SHEI «NMU»), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

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