中文摘要：

目的采用个人声暴露计测量某热轧厂吊车司机个体噪声暴露，了解吊车司机噪声暴露的水平和特点。方法以某热轧厂48名吊车司机为对象，使用AWA-5610E型个人声暴露计测量白班（8：00～16：00）工人个体噪声暴露；计算8h等效连续A声级（LAeq·8h）；分析噪声暴露时间变化图；根据吊车作业区域分组比较组间噪声暴露的差异。结果该厂噪声源多，吊车司机噪声暴露受多因素影响；其噪声暴露水平不稳定。测得的48例个体暴露中，LAeq·8h为（85．1±2．3）dB（A）；最大值为89．9dB（A），最小值为79．1dB（A）。根据吊车作业区域分为7组，各组噪声暴露水平比较接近，在83．9-87．8dB（A）之间，经检验差异无统计学意义（F=1．20，P=0．325）。结论该厂吊车司机噪声暴露水平已超过85dB（A）的国家标准，应纳入听力保护计划以保护吊车司机的健康。

英文摘要：

Objective To measure the occupational noise exposure of overhead-traveling crane drivers in a hot rolling mill with personal noise dosimeter. Method All 48 overhead-travehng crane drivers in this mill were selected as subjects. Their day-shift （8：00 16：00）noise exposure levels were measured with noise dosimeter （AWA-5610E）, and each driver＇s LAeq of 8 h （LAeq ·8h） were computed. According to the difference of work areas, the drivers were divided into 7 groups. Then the noise levels among the groups analyzed. Result There were many noise sources in the mill, therefore the personal noise exposure of the overhead-traveling crane drivers was not continuous. According to48 personal noise exposure data, the LAeq·8h was （85.1 ±2.3） dB （A）, the highest was 89.9 dB （A）, the lowest was 79.1 dB （A）, the LAeq of 7 groups were between 83.9 dB （A）, and 87.8 dB （A）. There was no significant difference among the noise level of the groups （ F = 1.20, P = 0.325）. Conclusion Noise exposure level of overhead-traveling crane drivers in this mill was over 85 dB （A）, these workers should be brought into the Hearing Conservation Program for improving their health.