제조업 산업장의 소음환경과 직업성 난청에 관한 조사연구

이채언; 이종태; 손혜숙; 문덕환; 조병만; 김성천; 배기택; 김용완

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자료유형: 학술저널

저자정보: 이채언 (인제대학 의학부 예방의학교실 및 산업의학연구소) 이종태 (인제대학 의학부 예방의학교실 및 산업의학연구소) 손혜숙 (인제대학 의학부 예방의학교실 및 산업의학연구소) 문덕환 (인제대학 의학부 예방의학교실 및 산업의학연구소) 조병만 (인제대학 의학부 예방의학교실 및 산업의학연구소) 김성천 (인제대학 의학부 예방의학교실 및 산업의학연구소) 배기택 (인제대학 의학부 예방의학교실 및 산업의학연구소) 김용완 (인제대학 의학부 예방의학교실 및 산업의학연구소)

저널정보: 대한산업보건협회 산업보건환경연구원 산업보건 산업보건 제5권

발행연도: 1988.1

수록면: 4 - 15 (12page)

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연구배경

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연구결과

초록· 키워드

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In order to proffer the fundamental data for the better working environment and the effective establishment of hearing conservation program on workers exposed to industrial noise, author assessed noise levels on the 42 noisy processes among 84 manufactures of 9 industries and measured noise gearing loss by the type of industries on 3,104 workers at these noisy processes from March, 1986 to Februry, 1987. The results were summarized as follows: 1. The averge of A-weight sound level of 23 processes(54.8%) and the avergae of sound level at each octave band of 14 processes(33.3%) exceeded the permissible exposure limits in 8 hours per day. 2. The noise level was the highest in process of cocking of ship building(109.1dBA), and followed by plating of steel rolling(104.3dBA), rivet of manufacture of motor vehicles(102.5dBA), shot of ship building(98.5dBA), aciding(95.7BA) and steel tubing(95.0dBA) of steel rolling, weaving of textiles(95.0dBA). 3. The permissible exposure time for the average of sound level at each octave band was only 30 minutes in the process of cocking of ship building, plating of steel rolling and rivet of manufacture of motor vehicles. 4. As a result of audiometric examination in 3,104 workers, the rate of hearing loss over 50dB at 4,000Hz was 7.3%(227 workers) and the rate of hearing loss over 41dB at 60average method was 2.9%(89 workers). 5. The prevalence of occupational hearing loss in ship building and manufacture of motor vehicle was 5.2% and it was the highest among prevalence of these 9 industries. 6. As a result of this suvery, the noise control and gearing conservation program were required especially in the industry of ship building and manufacture of motor vehicle.

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