Safety and Health at Work

Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency (산업안전보건연구원)
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Field Attenuation of Foam Earplugs

  • Copelli, Fran (Psychology Department, Ryerson University) ;
  • Behar, Alberto (Psychology Department, Ryerson University) ;
  • Le, Tina Ngoc (Psychology Department, Ryerson University) ;
  • Russo, Frank A. (Psychology Department, Ryerson University)
  • Received : 2019.09.19
  • Accepted : 2020.09.10
  • Published : 2021.06.30
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Abstract

Background: Hearing protection devices (HPDs) are often used in the workplace to prevent hearing damage caused by noise. However, a factor that can lead to hearing loss in the workplace is improper HPD fitting, and the previous literature has shown that instructing workers on how to properly insert their HPDs can make a significant difference in the degree of attenuation. Methods: Two studies were completed on a total of 33 Hydro One workers. A FitCheck Solo field attenuation estimation system was used to measure the personal attenuation rating (PAR) before and after providing one-on-one fitting instructions. In addition, external ear canal diameters were measured, and a questionnaire with items related to frequency of use, confidence, and discomfort was administered. Results: Training led to an improvement in HPD attenuation, particularly for participants with poorer PARs before training. The questionnaire results indicated that much HPD discomfort is caused by heat, humidity, and communication difficulties. External ear canal asymmetry did not appear to significantly influence the measured PAR. Conclusion: In accordance with the previous literature, our studies suggest that one-on-one instruction is an effective training method for HPD use. Addressing discomfort issues from heat, humidity, and communication issues could help to improve the use of HPDs in the workplace. Further research into the effects of canal asymmetry on the PAR is needed.

Keywords

Acknowledgement

The authors thank Jason Hoffman (Manager of Health and Wellness at Hydro One) for his facilitation of data collection. The authors thank Michael Associates & Inc. for kindly providing the FAES equipment. The authors thank Elizabeth Earle and the reviewers for their work in revising the paper.

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