航空铆接噪声作业工人听力损伤分析

目的；分析接触航空铆接噪声作业工人听力损伤，方法：对４个车间２２个作业点进行监测，对２４７名接触者进行体检及８个频率段听阈值测定，结果：噪声强度最高为１２２ｄＢ（Ａ）；１２３ｄＢ（Ｂ）；１１７ｄＢ（Ｃ），最低为８６ｄＢ（Ａ）；８９ｄＢ（Ｂ）；８６ｄＢ（Ｃ），平均为１０６ｄＢ（Ａ）；１０５ｄＢ（Ｂ）；１０４ｄＢ（Ｃ）。等儿连续Ａ声级强度最高１０７ｄＢ，最低１０４ｄＢ。１７９人有不同程度的听力损伤（男

Analysis on hearing inpairment of rivet-operators

Objective: To analyse the hearing impairment of the rive-operators.Methods:To surveillance at 22 working place in four workshops,and then physicaly examinate 247 workers and assay their hearing threshold value in 8 different frequency range. Results: The noise pressure level is 122dB (A) (max), 123dB (B) (max), 117dB(C) (max),and 86dB(ndn),89dB(B) (min), 86dB(C) (min),the average value is 106dB(A), 105dB(B),104dB(C). The equivalent continous A-weiphted sourd pressure level is 107dB (max) 104dB (min). The noise do harm to 179 workers (men 111 women 68), 4 workers of them have worked for ten years, 18 workers' have worked for twenty years, 137 workers have worked for thirty years,20 workers have worked for over 30 years, 53 workers' hearing were impaired at speech frequency and high frequency range, 124 workers' hearing were impaired at high frequency and 2 workers' hearing were impaired at speech frequency range.Condusion: To supply scientific base surveillance of analysis rivet-opevator.