![]() ![]() James, S., andĪpplications overview of military noises, insertion loss, prediction of performance,” NATO Lecture Series 244/HFM-111, NATO, Brussels, Belgium. Several shipboard, ground, and air transportation and weapon platforms create interior 110 dBA environments during operation ( James and McKinley, 2004 23. Department of the Army Pamphlet (DA PAM) 40-501, ![]() CPL 2-2.35A-.95(b)(1) Guidelines for noise enforcement: Appendix A., An 8-h average level of 85 dBA triggers the need for Hearing Conservation Programs (Occupational Health and Safety Administration, or OSHA) and any exposure in the Army and Air Force to levels of 85 dBA (regardless of average levels) mandates hearing protection be worn ( OSHA, 1983 37. Almost all of the ground and air transportation platforms expose crew and passengers to steady-state noise higher than 85 dBA while operating. Several classes of weapon systems expose crew to impulse noise levels that exceed 180 dBP. Department of Defense Instruction, number 6055.12., Department of Labor, Occupational Safety and Health Administration, For example, with the exception of the bayonet and the crossbow (which are used today by Special Forces), every Military weapon system makes more than 140 dB peak sound pressure level (dBP), a level generally considered the maximum for a single safe unprotected exposure for impulse noise ( OSHA, 1983 37. In fact, they are likely to have exposure to some of the most intense sounds that can be found in any occupation. All Military personnel are going to be exposed to loud sounds. ![]()
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