| Autor: |
Farhadi, Sajjad, Mohammadfam, Iraj, Kalatpour, Omid |
| Zdroj: |
Journal of Occupational Hygiene Engineering; Spring2016, Vol. 3 Issue 1, p1-9, 9p |
| Abstrakt: |
Introduction: To determine the effectiveness of hearing protective devices that lack technical information is one of the major challenges of occupational health experts to judge the impact of this exposure on reducing the level of occupational exposure to noise. The aim of this study was to design and build a hearing test adapter and experiment it to determine its reduction rate. Methods: Technical information in real environments and glass industries were Hamadan kitchen garden and guards to ensure exceptional performance test results were compared with computational methods. Results: The results of the testing of personal hearing protection compared with the results in real industry environment and octave-band method showed good regressions average operating transmission losses. Results showed that the average noise reduction between measured and calculation method for earmuffs was 9.3, 8.8 dB and 9.3, 11.2 dB for earplugs, respectively. Comparison of the tests, did not show significant differences between the results of the two methods (P > 0.05). Conclusions: The results of the designed adaptor for some hearing protectors showed that it is a valid tool for use to reduce rate test of earmuffs and earplugs. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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