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Noise-related hearing loss continues as one of the most prevalent occupational health concerns. Thousands of workers every year suffer from preventable hearing loss due to high workplace noise levels. Plug in to Magid for maximum comfort and savings in hearing protection. We offer an array of economically-priced disposable and reusable earplugs, banded hearing protectors and earmuffs in many different colors, materials, and Noise Reduction Rating (NRR) levels that are guaranteed to keep you safe and sound!
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Types of Hearing Protectors
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Considerations
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- Comfortable for extended use
- Cooler in warm environments
- Lower cost alternatives
- Corded versions allow for plugs to be kept close at hand
- Metal detectable options well suited for food processing applications
- NRR typically ranges from 21dB to 33dB
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- Well suited for intermittent noise
- Conveniently located around the neck when not in use
- Cooler alternative to earmuffs in warm environments
- NRR typically ranges from 17dB to 28dB
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- Well suited for intermittent and impact noise
- Easy to adjust for a proper fit
- Radio & 2-way communication options available
- Can be used in conjunction with earplugs to provide additional protection
- Long lasting design
- NRR typically ranges from 20dB to 30dB
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Materials & Constructions
Earplugs and hearing band pods can be made of a variety of materials and can come in a wide range of shapes and constructions.
- Foam earplugs: Made of slow-recovery foam, these disposable earplugs allow the wearer to roll the plugs and easily insert them into the ear canal where they expand to create a seal. The foam is soft and can be worn comfortably for extended periods of time. Available in a variety of designs, including tapered and contoured shapes, multiple sizes, corded and uncorded constructions, these plugs can provide the highest protection available when fitted properly.
- Molded earplugs: Made of pre-molded plastic or other elastic materials, these reusable plugs often possess flanges to help create an airtight seal in the ear canal. Generally longer lasting and more durable, molded earplugs can be washed to extend the life of the product.
- Push-in style earplugs: Generally made with a foam plug or pod and a pre-molded plastic stem or handle, these contoured plugs offer touch-free insertion with the benefit of good attenuation typical of foam earplugs.
- Earmuffs: Constructed of vinyl or plastic over foam or some other insulating material, an earmuff’s cushions provide a comfortable seal around the ear without the need to insert anything into the ear canal. Attached to a headband or mounted to a hard hat, ear muffs provide a quick, easy fit with the least amount of training required.
Designing an OSHA-Compliant Hearing Conservation Program
According to OSHA Standard 29 CFR 1910.95, employers are required to measure noise levels, provide free annual hearing exams and free hearing protection, provide training, and conduct evaluations of the adequacy of the hearing protectors in use if worker exposure to noise is greater than 85 dBA averaged over an eight-hour period. To develop an effective conservation program, consider the following:
- Focus on the three Cs when selecting the type of protection to make available: comfort, convenience and compatibility.
- Employees are less likely to wear hearing protectors that are uncomfortable or difficult to use or that interfere with their work.
- Employees should be able to choose, with the help of a person trained in fitting hearing protectors, the type and size of earplug or earmuff that delivers the best fit and protection given their specific environment and job duties.
- Hearing protectors are labeled with a Noise Reduction Rating (NRR) in decibels measured under laboratory conditions. OSHA's experience and the published scientific literature have shown that laboratory-obtained real ear attenuation for hearing protection devices can seldom be achieved in the workplace. OSHA strongly recommends applying a 50% correction factor when estimating field attenuation.
Visit www.osha.gov to view the complete standard, as well as other resources available to help you ensure a safe, compliant hearing conservation program.
When Hearing Protection is Required
OSHA (Occupational Safety & Health Administration) Requirements
- Employers shall make hearing protectors available to all employees exposed to an 8-hour time weighted average of 85 decibels or greater at no cost to the employees.
- Hearing protection is required when the 8-hour time weighted average is 90dB or greater.
- Employees shall be given the opportunity to select from a variety of suitable hearing protectors.
- Hearing protectors must attenuate employee exposure to an 8-hour time weighted average of 90dB (85dB if employee has experienced a significant threshold shift).
Earplugs
To insert earplugs properly:
- For disposable foam earplugs, roll down the plug as small as possible using the palm of your hand.
- Reach around the back of your head, and gently pull your ear back and up.
- Insert the plug well into the ear canal.
- Hold the plug in place for a few seconds while it expands and forms a good seal.
Selecting Proper Hearing Protection
As per OSHA regulations, employees must be provided with hearing protectors if they are exposed to workplace noise that equals or exceeds 85 dBA, averaged over an eight-hour period. When choosing between Magid earplugs and earmuffs, focus on the three Cs: comfort, convenience, and compatibility. Employees are less likely to wear hearing protectors that are uncomfortable or difficult to use or that interfere with their work. They should be able to choose, with the help of a person trained in fitting hearing protectors, the type and size of earplug or earmuff that delivers the best fit and protection given their specific environment and job duties.
OSHA's experience and the published scientific literature have shown that laboratory-obtained real ear attenuation for hearing protection devices can seldom be achieved in the workplace. To adjust for workplace conditions, OSHA strongly recommends applying a 50% correction factor when estimating field attenuation. This is especially important when considering whether engineering controls are to be implemented. Use the following method to estimate the attenuation afforded to a noise-exposed employee in a work environment by muffs, plugs, or a combination of both.
For single protection, subtract the hearing protection device's NRR from the C-weighted or A-weighted TWA workplace noise level, as follows:
Estimated Exposure (dBA) = TWA (dBC) - [NRR x 50%], or
Estimated Exposure (dBA) = TWA (dBA) - [(NRR - 7) x 50%]
Example:
Noise Level: 95 dBA
IHP32 NRR: 32 dB
IHP32 Adjusted NRR: (32 - 7) x 50% = 12.5 dB
Estimated Effectiveness: 95 - 12.5 = 82.5 dBA
For dual protection (earmuffs and plugs are used simultaneously), determine the NRR for the higher rated protector (NRRh), subtract 7 dB from NRRh if using A-weighted sound level data, and add 5 dB to the field-adjusted NRR to account for the use of the second hearing protector:
Estimated Exposure (dBA) = TWA (dBC) - [(NRRh x 50%) + 5] , or
Estimated Exposure (dBA) = TWA (dBA) - {[(NRRh - 7) x 50%] + 5}