Noise can be controlled by various measures including installing equipment and systems that have been engineered, designed, and built to operate quietly; by enclosing or shielding noisy equipment; by making certain that equipment is in good repair and properly maintained with all worn or unbalanced parts replaced; by mounting noisy equipment on special mounts to reduce vibration; and by installing silencers, mufflers, or baffles.

When employees are subjected to sound exceeding those listed the table below, feasible administrative or engineering controls should be utilized. If such controls fail to reduce sound to acceptable levels, personal protective equipment should be provided and used to reduce sound to within the levels of the chart.