首页|期刊导航|中华医学杂志（英文版）|Assessment of personal noise exposure of overhead-traveling crane drivers in steel-rolling mills
中华医学杂志（英文版）2007，Vol.120Issue(8)：684-689,6.
Assessment of personal noise exposure of overhead-traveling crane drivers in steel-rolling mills
Assessment of personal noise exposure of overhead-traveling crane drivers in steel-rolling mills
摘要
Abstract
Background Noise is widespread occupational hazard in iron and steel industry. Overhead-traveling cranes are widely used in this industry, but few studies characterized the overhead-traveling crane drivers' noise exposure level so far. In this study, we assessed and characterized personal noise exposure levels of overhead-traveling crane drivers in two steel-rolling mills.Methods One hundred and twenty-four overhead-traveling crane drivers, 76 in the cold steel-rolling mill and 48 in the hot steel-rolling mill, were enrolled in the study. Personal noise dosimeters (AIHUA Instruments Model AWA5610e,Hangzhou, China) were used to collect full-shift noise exposure data from all the participants. Crane drivers carried dosimeters with microphones placed near their collars during the work shifts. Work logs had been taken by the drivers simultaneously. Personal noise exposure data were divided into segments based on lines in which they worked. All statistical analyses were done using SPSS 13.0.Results The average personal noise exposure (LAeq.8h) of overhead-traveling crane drivers in the hot steel-rolling mills ((85.03±2.25) dB(A)) was higher than that in the cold one ((83.05±2.93) dB(A), P＜0.001). There were 17 overhead traveling cranes in the hot steel-rolling mill and 24 cranes in the cold one, of which carrying capacities varied from 15 tons to 100 tons. The average noise exposure level based on different lines in the hot and cold steel-rolling mills were (85.2±2.61) dB(A) and (83.3±3.10) dB(A) respectively (P=0.001), which were similar to the average personal noise exposure in both mills. The noise exposure levels were different among different lines (P=0.021).Conclusion Noise exposure levels, depending upon background noise levels and the noise levels on the ground, are inconstant. As the noise exposure levels are above the 85 dB(A) criteria, these drivers should be involved in the Hearing Conservation Program to protect their hearing.关键词
noise, occupational/exposure assessment/overhead-traveling crane driverKey words
noise, occupational/exposure assessment/overhead-traveling crane driver分类
医药卫生引用本文复制引用
ZENG Lin,CHAI Dong-liang,LI Hui-juan,LEI Zhuo,ZHAO Yi-ming..Assessment of personal noise exposure of overhead-traveling crane drivers in steel-rolling mills[J].中华医学杂志（英文版）,2007,120(8):684-689,6.基金项目
The study was supported by the grant from the National Natural Science Fundation of China (No. 30271112 and No. 30640085). （No. 30271112 and No. 30640085）
