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http://yadda.icm.edu.pl:80/baztech/element/bwmeta1.element.baztech-29e646c0-f03e-43cd-9a3c-21c1330c1309

Czasopismo

International Journal of Occupational Safety and Ergonomics

Tytuł artykułu

Measurement of Effective Noise Exposure of Workers Wearing Ear-Muffs

Autorzy Kotarbińska, E.  Kozłowski, E. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
Abstrakty
EN This paper presents the methodology and the results of binaural measurements of exposure to noise for 91 industry workers wearing ear-muffs. The results revealed that 18.7% of the workers were exposed to noise of equivalent A-weighted sound pressure levels of over 80 dB(A) and 7.7% to levels of over 85 dB(A). The measured levels were compared with those calculated with the octave-band method according to Standard No. EN 458:2004. The differences ranged from – 3 dB(A) to 26.5 dB(A); their statistical distribution did not indicate any data which could suggest derating laboratory measurements. The main causes of exposure to noise higher by over 3 dB(A) than that theoretically predicted were the bad technical condition of ear-muffs (32.2% of the cases) and an incorrect way of wearing them (15.2%).
Słowa kluczowe
EN noise exposure   hearing protectors   earmuffs   real-world attenuation  
Wydawca Taylor & Francis
Czasopismo International Journal of Occupational Safety and Ergonomics
Rocznik 2009
Tom Vol. 15, No. 2
Strony 193--200
Opis fizyczny Bibliogr. 14 poz., rys., wykr.
Twórcy
autor Kotarbińska, E.
autor Kozłowski, E.
  • Central Institute for Labour Protection – National Research Institute (CIOP-PIB), Poland
Bibliografia
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2.European Committee for Standardization (CEN). Hearing protectors—recommendations for selection, use, care and maintenance—guide document (Standard No. EN 458:2004). Brussels, Belgium: CEN; 2004.
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4.European Committee for Standardization (CEN). Acoustics—hearing protectors—part 2: estimation of effective A-weighted sound pressure levels when hearing protectors are worn (Standard No. EN ISO 4869-2:1994). Brussels, Belgium: CEN;1994.
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9.Arezes P, Geraldes J. Assessing differences in methodologies for effective noise exposure calculation. In: 1st European Forum on Effective Solution for Managing Occupational Noise Risks [CD-ROM]; 2007. p. 1121–30.
10.Kotarbińska E, Canetto P. Hearing protector “real world” attenuation, let’s not mix up the problems. In: First International Conference on Industrial Risk Engineering, CIRI [CD-ROM]; 2007. p. 96–108.
11.Kotarbińska E. The influence of aging on the noise attenuation of ear-muffs. Noise Health. 2005;7(26):39–45.
12.Lenzuni P. An educated guess on the workplace attenuation variability of ear muffs. International Journal of Occupational Safety and Ergonomics (JOSE). 2009;15(2):201–210.
13.Kozłowski E, Kotarbińska E. Laboratory objective method for noise reduction measurements of ear-muffs. Arch Acoust. 2007;32(2):287–92.
14.European Committee for Standardization (CEN). Hearing protectors—general requirements—part 1: ear-muffs. (Standard No. EN 352:1:2002). Brussels, Belgium: CEN; 2002.
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