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Daily rating level effective to hearing (L’Ard) versus exposure time during work shift. L’Ard without hearing protector: 105 dB(A); L’Ard with hearing protector worn entire exposure: 80 dB(A). Hearing protector’s attenuation: 25 dB(A). L’Ard for situation ‘every half hour 1 minute exposure without protector’: 90,4 dB(A).

Daily rating level effective to hearing (L’Ard) versus exposure time during work shift. L’Ard without hearing protector: 105 dB(A); L’Ard with hearing protector worn entire exposure: 80 dB(A).
Hearing protector’s attenuation: 25 dB(A). L’Ard for situation ‘every half hour 1 minute exposure without protector’: 90,4 dB(A).