User:Marietta.mathis/sandbox
Proposed additions to the "earmuffs" article:
Specific Considerations for Hearing Protection for Workers with Hearing Loss:
Workers with hearing loss face additional risk factors on the job site such as an inability to hear warning signals or alarms, an increased difficulty to tell where sounds are coming from, and increased difficulty communicating with co-workers.[1] This occurs due to the hearing protection device (HPD) attenuating the signals/noises below the level that the worker is able to hear. [2] OSHA regulations require individuals to wear HPD regardless of their amount of hearing loss, even if they have a severe to profound hearing loss. [3] Workers that have sustained a standard threshold shift are required by OSHA to wear HPD at a 85 dB TWA.[4] There are special considerations to take into account when fitting HPD on workers with a hearing loss. These factors include comfort, degree and configuration of the worker's hearing loss, the necessary communication demands in the workplace (verbal vs. nonverbal), the ease of communication, and the noise exposure levels of the worker.[5]
Workers may want to wear their hearing aids under an earmuff. According to OSHA, hearing aids should not be used in areas with dangerous noise levels. However, OSHA allows for the professional(s) in charge of the hearing loss protection program to decide on a case-by-case basis if a worker can wear their hearing aids under an earmuff in high-level noise environments. However, workers are not permitted to wear their hearing aids (even if they are turned off) instead of using HPD. OSHA specifies that hearing aids are not "hearing protectors" and do not attenuate enough sound to be used instead of HPD.[4]
Devices that provide both communication enhancement and hearing protection can be used to attenuate loud sounds and amplify soft-level sounds. These are available with both wireless and wired options.[4][5] The effects of these will vary based on the degree and configuration of the worker's hearing loss. Dual hearing protection with electronic/communication elements may aid a person with hearing loss in hearing warning signals and help with communication. Workers with a high frequency hearing loss may benefit more from HPD that attenuates sounds equally across the pitch range. This is helpful because traditional HPD will attenuate the higher frequencies (where these individuals have a hearing loss) more than the mid- and low-frequencies. Whereas, HPD that attenuate equally across the pitch range, can provide more comfort and balancing of loudness across the pitches for these individuals. This type of HPD are commonly referred to as "musicians plugs."[5] NIOSH provides a "Hearing Protector Device Compendium" with information on the different types of HPD. [6]
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- ^ "Innovative Workplace Safety Accommodations for Hearing-Impaired Workers".
- ^ Berger, Elliott (2000). The Noise Manual, Fifth Edition. Fairfax, VA: AIHA. pp. Chapter 10.
- ^ "OSHA Regulations (Standards - 29 CFR)".
- ^ a b c "Hearing Conservation for the Hearing-Impaired Worker".
- ^ a b c Rawool, Vishakha Waman (2012). Hearing Conservation in Occupational, Recreational, Educational, and Home Settings. New York, NY: Thieme Medical Publishers, Inc. pp. 146–148.
- ^ "Hearing Protector Device Compendium". Centers for Disease Control and Prevention.