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Case Study in a Working Environment Highlighting the Divergence between Noise Intensity and Workers' Perception
Chun-Yip Hon1, Illia Tchernikov2, Craig Fairclough2
1School of Occupational and Public Health, Ryerson University, Toronto, ON M5B 2K3, Canada.
Summary
Food processing noise levels often exceed safety limits. Many workers perceive the noise as not bothersome, hindering the implementation of hearing conservation programs.
Area of Science:
- Occupational Health and Safety
- Industrial Hygiene
- Acoustics
Background:
- Excessive noise is a significant occupational hazard in food processing plants.
- Previous research on occupational noise has not utilized a concurrent mixed-methods approach.
Purpose of the Study:
- To investigate the convergence between measured noise levels and workers' perceptions in food processing environments.
- To identify challenges in implementing hearing conservation efforts due to discrepancies between objective noise data and subjective worker attitudes.
Main Methods:
- Concurrent mixed-methods approach combining quantitative noise measurements and qualitative one-on-one interviews.
- Spot noise measurements were collected using a sound level meter.
- Worker attitudes and perceptions towards workplace noise were assessed through interviews.
Main Results:
- The majority of noise measurements exceeded the 85 dBA occupational health and safety criterion.
- While all participants acknowledged the presence of noise, a significant portion did not find it bothersome.
- A notable divergence was observed between measured noise levels and workers' subjective perception of noise bothersomeness.
Conclusions:
- Discrepancies between measured occupational noise levels and workers' perceptions pose a challenge for effective hearing conservation.
- Raising worker awareness regarding the risks of excessive noise exposure is crucial for successful implementation of hearing conservation measures.
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