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Combat Arms Earplug. Hearing Conservation Department of Preventive Medicine Winn Army Community Hospital Ft. Stewart, GA. Hearing Conservation POC. CPT Jillyen Curry: 370-6916 Email: [email protected] SGT Mary Knaff: 370-5590 Email: [email protected]. - PowerPoint PPT Presentation
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Combat Arms EarplugCombat Arms Earplug
Hearing ConservationDepartment of Preventive Medicine
Winn Army Community HospitalFt. Stewart, GA
Hearing ConservationDepartment of Preventive Medicine
Winn Army Community HospitalFt. Stewart, GA
Hearing Conservation POC
• CPT Jillyen Curry: 370-6916• Email: [email protected]
• SGT Mary Knaff: 370-5590• Email: [email protected]
• CPT Jillyen Curry: 370-6916• Email: [email protected]
• SGT Mary Knaff: 370-5590• Email: [email protected]
COMBAT ARMS EARPLUGCOMBAT ARMS EARPLUG
• Keep filter holes free of earwax and other debris.
• Check proper insertion for slight tension by gently tugging on plugs.
• Ensure that plugs are cleaned with soap and water and dry when returned to case.
• Keep filter holes free of earwax and other debris.
• Check proper insertion for slight tension by gently tugging on plugs.
• Ensure that plugs are cleaned with soap and water and dry when returned to case.
• Insert YELLOW plugs for weapons fire in dismounted
mode.
• Insert YELLOW plugs for weapons fire in dismounted
mode.• Insert OLIVE DRAB plugs for steady state noise in and around aircraft, noisy vehicles and watercraft, etc.
• Insert OLIVE DRAB plugs for steady state noise in and around aircraft, noisy vehicles and watercraft, etc.
NSN 6515-01-466-2710NSN 6515-01-466-2710
U.S. ARMY CENTER FOR HEALTH PROMOTION AND PREVENTIVE MEDICINE
The Problem and the IdealSolution
The Problem and the IdealSolution
U.S. ARMY CENTER FOR HEALTH PROMOTION AND PREVENTIVE MEDICINE
“Earplugs or muffs appear to be counter-indicated, with regard to speech communication in the situation where they are probably needed most – namely, in the presence of intermittent, impulsive noise, such as gunfire. Here, the wearer of earplugs or muffs cannot hear weak speech during silent intervals between impulses. The ideal solution would be a nonlinear device that would let weak sounds through at full strength but would attenuate intense sounds.” pp. 68-69
“Earplugs or muffs appear to be counter-indicated, with regard to speech communication in the situation where they are probably needed most – namely, in the presence of intermittent, impulsive noise, such as gunfire. Here, the wearer of earplugs or muffs cannot hear weak speech during silent intervals between impulses. The ideal solution would be a nonlinear device that would let weak sounds through at full strength but would attenuate intense sounds.” pp. 68-69
K.D. Kryter, The Effects of Noise on Man (1970) Academic Press
U.S. ARMY CENTER FOR HEALTH PROMOTION AND PREVENTIVE MEDICINE
Figure 6Figure 6
Insertion Loss and NR peak afforded by the ISL-EAR Ultrafit earplug for different levels of the impulses (1/3 oct. bands). Insertion Loss afforded by the ISL-EAR Ultrafit earplug when measured with a pink noise at 100 dB (full line and diamonds). Insertion Loss afforded by the original EAR Ultrafit earplug when measured with a pink noise at 120 dB (full line and squares).
Insertion Loss and NR peak afforded by the ISL-EAR Ultrafit earplug for different levels of the impulses (1/3 oct. bands). Insertion Loss afforded by the ISL-EAR Ultrafit earplug when measured with a pink noise at 100 dB (full line and diamonds). Insertion Loss afforded by the original EAR Ultrafit earplug when measured with a pink noise at 120 dB (full line and squares). (after Dancer)(after Dancer)
1000m1000m
900m900m
800m800m
700m700m
600m600m
500m500m
400m400m
300m300m
200m200m
100m100m
0m0mLow Suburban Environmental Noise with Acceptable (H-1 Profile) Hearing
AbilityLow Suburban Environmental Noise with Acceptable (H-1 Profile) Hearing
Ability
Open Normal EarOpen Normal Ear Combat Arms EarplugCombat Arms Earplug Foam EarplugFoam Earplug
Detection of Sound byDetection of Sound by
Truck800m
Truck400m
Riflebolt Closing500m
Riflebolt Closing1000m
Truck800m
Riflebolt Closing60m
Army Research Laboratory Data
U.S. ARMY CENTER FOR HEALTH PROMOTION AND PREVENTIVE MEDICINE
COMBAT ARMS EARPLUGCOMBAT ARMS EARPLUG
• Keep filter holes free of earwax and other debris.
• Check proper insertion for slight tension by gently tugging on plugs.
• Ensure that plugs are cleaned with soap and water and dry when returned to case.
• Keep filter holes free of earwax and other debris.
• Check proper insertion for slight tension by gently tugging on plugs.
• Ensure that plugs are cleaned with soap and water and dry when returned to case.
• Insert YELLOW plugs for weapons fire in dismounted
mode.
• Insert YELLOW plugs for weapons fire in dismounted
mode.• Insert OLIVE DRAB plugs for steady state noise in and around aircraft, noisy vehicles and watercraft, etc.
• Insert OLIVE DRAB plugs for steady state noise in and around aircraft, noisy vehicles and watercraft, etc.
NSN 6515-01-466-2710NSN 6515-01-466-2710
U.S. ARMY CENTER FOR HEALTH PROMOTION AND PREVENTIVE MEDICINE
Army Regulations
AR 385-10
AR 40-5
DA Pam 40-501
Hearing Conservationis
Combat Readiness Medicine
