Divide this text into sentences and correct mistakes: 1. Hearing protection device requirements and considerations per da Pam 40 - 501. 2. You are required to wear hearing protection devices when in the presence of four types of noise hazards: steady state, impulse, ultrasonic, and blast overpressure. 3. For the purposes of simplicity, we will discuss steady-state and impulse or impact noise. 4. Impulse or impact noise is defined as high level short duration noise, like rifle shots or an explosion. 5. Steady-state noise is defined as continuous periodic or randomly variable sounds that last for long periods of time, like helicopter or vehicle noises. 6. The weapons and machinery discussed are examples. 7. To be sure you are using the appropriate type of hearing protection, consult your installation hearing program manager or unit hearing program officer. 8. Those exposed to impulse noise at or above 140 decibels or steady-state noise at or above 85 decibels must use hearing protection devices. 9. Single or double hearing protection is required depending on the type and duration of noise exposure. 10. Single hearing protection is defined as wearing only one form of hearing protection at a time, for example earplugs or noise muffs. 11. Double hearing protection is defined as wearing two forms of hearing protection at the same time, for example wearing noise muffs on top of earplugs. 12. For scenario-specific considerations, single hearing protection is appropriate when firing an m4 m16 or a nine, when riding in a Humvee, or when exposed to noise from a sixty millimeter mortar. 13. Double hearing protection is required when operating or standing in the vicinity of a howitzer, riding in or standing near a Bradley vehicle or Abrams tank, or when riding in or standing near some helicopters depending on duration, like a Chinook...
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Da pam 40-501 Form: What You Should Know
May 16, 2024 — this bulletin supersedes previous Pamphlets containing this service manual. Approximately 15 April 1944 — Letter from OUT, OCS, and Medical Section to JCS, dated 3 February 1944. Aug 29, 2024 — Letter to all officers, enlisted, and NCO's. Aug 25, 2024 — This bulletin supersedes previous bulletin. Approximately 30 March 1944 — Letter from OUT to JCS, dated 19-8-44‡, concerning the following items: ○ “I have just read your letter of the 8th. And understand that for your part, you are concerned with the training of doctors, nurses, hospital clerks and hospital technicians in the Army Medical Service. . . . I think your letter to the Assistant Chief of Staff of the Air Force will help the Congress in developing the Army Medical Service. . . . “The Medical Service, having a large, well-qualified supply of competent medical personnel, should be in the forefront in establishing medical training for other branches of service. . . “But, in the absence of a satisfactory Army Medical Service, I have recommended the appointment — until it is done — of an Office of the Deputy Chief (Medical) for Army affairs… “A similar appointment is necessary immediately in order to establish a single Military Advisory Committee for the medical services, to which the services of every General, Brigadier General, and Brigadier General should submit their requests for assistance. “As you know, this work can be done only by civilian personnel, and the appointment of a civilian to this office will facilitate the work of this committee.” .................................. ○ The Army Medical Service, having a large, well-qualified supply of competent medical personnel, should be in the forefront in establishing medical training for other branches of service. . . . ○ The Medical Service, having a large, well-qualified supply of competent medical personnel, should be in the forefront in establishing medical training for other branches of service. . . . “In my judgment, you have a very competent Medical Services, but you are a long way short of being able to develop it beyond the competence of the best Army Medical Service in the world. The Army Medical Service, with a large, well-qualified supply of competent medical personnel, should be in the forefront in establishing medical training for other branches of service. . .” .................................. ○ ….
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