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Subscribe to this list via RSS Blog posts tagged in noise measurement

Posted by on in Uncategorized

Noise, or undesirable sound, is one of the most common health problems to be in many workplaces.

Continued exposure to more than 85 decibels (dBA) of noise may cause gradual but permanent damage to hearing. Noise can also be detrimental to job performance, increase fatigue, and cause irritability. Exposure to high levels of noise causes hearing loss and can lead to other harmful health effect as well. Perhaps the most widely known detrimental effect of noise is noise-induced hearing loss. Such losses can be either temporary or permanent; the extent of the damage is dependent mainly upon the intensity and duration of exposure.

Some of the occupations OSHA has identified as being at high risk of hearing loss are:
- Firefighters and other first responders
- Military personnel
- Disc jockeys
- Subway workers
- Construction workers
- Musicians
- Factory workers
- Mine workers

Those categories might not come as a surprise, but they do serve to illustrate the range of jobs that routinely involve exposure to high and potentially damaging levels of noise.

Practically all companies directly involved in manufacturing, construction, or mining create noise as a by- product. While it cannot be totally eliminated, the negative health effects of noise can be limited by wearing the proper personal protective equipment and, in some instances, implementing engineering and/or administrative controls.

In the early 1980s, OSHA announced a hearing conservation amendment (29 CFR 1910.95, Occupational Noise Exposure Standard) that requires hearing conservation programs for all employees exposed to noise on an eight-hour, time weighted average (TWA) in excess of 85 decibels measured on an A-weighted scale (85 dBA). The permissible exposure limit is 90 dBA for an eight-hour TWA.

The first move toward protecting your employees’ hearing is to establish a hearing conservation program. Such a program includes provisions for measuring noise, implementing engineering and/or administrative controls of noise, conducting hearing tests for individual employees, and supplying the proper personal hearing protectors as needed.

OSHA requires a five-part minimum hearing conservation program for industry. It includes:
-Noise Monitoring: Sound levels must be measured to determine what safeguards are needed.
-Hearing Testing: All employees in a hearing conservation program must be tested annually.
-Employee Training and Education: Employees in a hearing conservation program must be trained every year on hearing protection.
-Hearing Protectors: Hearing protection devices should be made available to all employees according to the noise risks identified.
-Record Keeping: A company must maintain records on sound level results, equipment calibration results, and hearing test records of employees, along with its educational activities.

A noise survey of the workplace environment can be used to map what areas are most prone to noise, leading to a more efficient hearing conservation program. Workplace Safety & Health Co., Inc. can provide this service and help identify employees who need to be included in the noise control program. The results can be used to determine if an initial cost of engineering controls is a prudent investment in comparison to the ongoing costs of hearing conservation program management for your organization –helping you make decisions that are safe for sound.

Tagged in: noise measurement OSHA

The association has submitted a letter of support for legislation H.R. 3384.

The American Industrial Hygiene Association has submitted a letter of support for H.R. 3384, the "Quiet Communities Act of 2015." This legislation would reestablish and reauthorize funding for EPA's Office of Noise Abatement and Control.
According to AIHA's news release, the letter focuses on a 2014 study that estimated more than 104 million individuals in the United States had annual noise exposures at a level that increased their risk of noise-induced hearing loss and other noise-related health effects, such as cardiovascular disease, sleep disturbance, stress, general annoyance, and impaired learning and concentration.

AIHA says that the new legislation will also provide support for two other objectives of the 1972 Noise Control Act, including establishing a means for effective coordination of federal research and activities in noise control and providing information to the public regarding the noise emission and reduction characteristics of consumer products.

Read entire article - https://www.aiha.org/about-aiha/Press/2015PressReleases/Pages/AIHA-Submits-Letter-of-Support-for-Legislation-H.R.-3384.aspx

Tagged in: EPA noise measurement

Posted by on in Noise Measurement

Noise, or undesirable sound, is one of the most common health problems in many workplaces. Practically all companies involved in manufacturing, construction, or mining create noise. And because noise is inherent in many work processes, it cannot be totally removed. However, its adverse effects on health can be limited by knowing where to implement engineering controls, administrative controls and the use of proper personal protective equipment.

Perhaps the most widely known detrimental effect of noise is hearing loss, which can be either temporary or permanent. The extent of the damage depends primarily upon the intensity and duration of exposure. In addition to hearing loss, excessive noise levels can also lead to hazardous situations at work, such as an inability to hear warnings, a decrease in the ability to communicate with other employees, and impaired concentration.

In the early 1980s, OSHA established a hearing conservation amendment (29 CFR 1910.95, Occupational Noise Exposure Standard) that requires hearing conservation programs for all employees exposed to noise on an eight-hour, time weighted average (TWA) in excess of 85 decibels measured on an A-weighted scale (85 dBA). The permissible exposure limit is 90 dBA for an eight-hour TWA. (Something to keep in mind is that some states also have regulations that are at least as stringent as OSHA’s.)

Determining whether or not to use engineering controls, administrative controls, or personal protection devices or some combination to meet those requirements involves recognizing that a noise problem may exist, followed by identifying its source or sources and evaluating the extent of the problem. In some cases, identifying both the problem and its source can be obvious, such as when it is apparent that employees aren’t able to talk with one another at a reasonable distance near certain machinery. In many other cases, however, the source can’t be traced so easily, such as in places where multiple machines are in use.

Workplace Safety & Health Co., Inc. can help identify sources of noise in a work environment by conducting a noise survey, which normally includes personal noise exposure sampling using dosimeters and developing a noise contour map, clearly identifying noisy areas. The results can be used to locate specific noise sources, identify which employees should be included in a hearing conservation program, and then determine what form or forms of noise control are best suited to the situation. It all makes for a hearing conservation program that is both compliant and efficient.

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