Noise and Vibration Control

by | Aug 18, 2025 | Environmental, Safety, Toolbox Talk, Transportation

Noise and vibration, which are often linked, are workplace hazards that can negatively impact employees’ health and safety. Excessive noise can cause hearing loss, raise stress levels, and impair focus. Vibration can lead to musculoskeletal issues and fatigue. Controlling noise and vibration can help reduce or eliminate unwanted sounds and vibrations. 

Discussion Points:

  • Conducting a comprehensive assessment of the workplace.
  • Recommendations for noise and vibration exposure limits by OSHA, NIOSH, and EPA.
  • Implementing control measures to reduce noise and vibration exposure.

Discussion:

A comprehensive workplace assessment can identify noise and vibration sources with a sound level meter. Based on these results, workers should apply control measures to reduce exposure. 

The Occupational Safety and Health Administration (OSHA) establishes permissible exposure limits (PELs) for occupational noise, currently set at 90 decibels (dBA) over an eight-hour TWA. 

The National Institute for Occupational Safety and Health (NIOSH) recommends a stricter exposure limit of 85 dBA over an eight-hour TWA. NIOSH also applies a three dBA exchange rate, meaning that for every three dBA increase in noise, the permissible exposure time is reduced by half.

The Environmental Protection Agency (EPA) advises an average 24-hour exposure limit of 55 dBA to protect public health and welfare in residential areas, as specified in the Noise Control Act of 1972.  

Engineering controls aim to reduce noise at its source by utilizing mufflers, quieter equipment, noise barriers, surface modifications, or correcting imbalances. Administrative controls involve adjusting work practices, such as rotating employees to limit time exposure or scheduling noisy tasks during off-peak hours. 

When engineering and administrative controls are insufficient or during their implementation, workers should wear earplugs or earmuffs to protect their hearing. If noise exceeds 85 dBA over an eight-hour period, workers must receive training, wear hearing protection, and undergo audiometric testing.

Vibration control reduces noise from vibrating surfaces by utilizing specialized devices, such as rubber mounts, springs, and dampers, to minimize vibration transfer. 

Increasing the distance between noise sources and sensitive areas, utilizing natural sound barriers, and scheduling noisy activities during less disruptive times are crucial strategies for reducing noise pollution. To enhance indoor sound quality, consider adding sound-absorbing materials, such as acoustic panels or ceiling tiles, which help reduce reverberation. Structures like walls and berms can effectively block or absorb outdoor noise. 

Consult local health or environmental agencies for specific regulations regarding your area. Implementing effective noise and vibration control measures improves safety, lowers health risks, boosts productivity, and improves employee morale.

As always, stay safe out there!