摘要
为了解公共汽车司乘人员的劳动条件，对公共汽车司乘人员接受全身振动强度、工时、车厢内噪声强度，以及空气中ＣＯ、ＣＯ２、ＮＯ２含量和细菌含量进行了测定。结果表明：司机及乘务员座椅处垂直振动加速度超过了ＩＳＯ２６３１规定的疲劳－减效界限，但未超过４小时暴露极限。司乘人员平均每日实际接触全身振动约４．５～５小时。汽车行驶中噪声强度未超过我国机动车辆允许噪声标准。车厢空气中ＣＯ、ＣＯ２和ＮＯ２含量未超过车间空气中有害气体最高容许浓度标准或我国公共交通工具卫生标准中对旅客列车等制订的参考标准，细菌总数及溶血性链球菌数，冬季接近或低于参考标准，夏季高于参考标准３～４倍。
The whole body vibration intensity and the exposure time of drivers and conductors were measured on the buses in Beijing proper. The noise, concentrations of CO, CO 2,NO 2 and bacteria in the air of the buses were also measured. The results revealed that the subjects were exposed to vibration for about 4.5￣5 hours per day, and the vertical vibration acceleration exceeded the value recommended in ISO 2631, though the exposure time didn′t exceed 4 hours, the upper limit of the standard, in this condition. The noise level in the moving coach did not exceed the allowable noise standard on motor vechicle of China. The concentrations of CO, CO 2 and NO 2 in the air of the buses did not exceed the reference standards. The tatol number of bacteria in summer exceeded the reference limit by 3￣4 times.
出处
《中华劳动卫生职业病杂志》
CAS
CSCD
1997年第3期157-159,共3页
Chinese Journal of Industrial Hygiene and Occupational Diseases
基金
卫生部科研基金
