User talk:Brennen.d.kar/sandbox

The following is my draft for edits I want to add to the article "Noise Control"

Standards and Recommendations
Organizations each have their own standards, recommendations, and directives for what levels of noise workers are permitted to be around before noise controls must be put into place.

Occupational Safety and Health Administration (OSHA)
OSHA's requirements state that when workers are exposed to noise levels above 90 A-weighted decibels (dBA) in 8-hour time-weighted averages (TWA), administrative controls and/or new engineering controls must be implemented in the workplace. OSHA also requires that impulse noises and impact noises must be controlled to prevent these noises reaching past 140 dB peak sound pressure levels (SPL).

Mine Safety and Health Organization (MSHA)
MSHA requires that administrative and/ or engineering controls must be implemented in the workplace when miners are exposed to levels above 90 dBA TWA. If noise levels exceed 115 dBA, miners are required to wear hearing protection. MSHA, therefore, requires that noise levels be reduced below 115 dB TWA. Measuring noise levels for noise control decision making must integrate all noises from 90dBA to 140 dBA.

Federal Railroad Association (FRA)
The FRA recommends that worker exposure to noise should be reduced when their noise exposure exceeds 90 dBA 8-hour TWA. Noise measurements must integrate all noises, including intermittent, continuous, impact, and impulse noises between 80 dBA to 140 dBA.

U.S. Department of Defense (DoD)
The DoD suggests that noise levels be controlled primarily through engineering controls. The DoD requires that all steady-state noises be reduced to levels below 85 dBA and that impulse noises be reduced below 140 dB peak SPL. Time Weighted Average exposures are not considered for the DoD's requirements.

European Parliament and Council Directive
The European Parliament and Council directive require noise levels to be reduced or eliminated using administrative and engineering controls. This directive requires lower exposure action levels of 80 dBA for 8 hours with 135 dB peak SPL, along with upper exposure action levels of 85 dBA for 8 hours with 137 peak dBSPL. Exposure limits are 87 dBA for 8 hours with peak levels of 140 peak dBSPL.