郭庆华, 牛心华. 某汽车制造企业车架焊接工段通风排尘设施除尘效果分析与评价[J]. 环境与职业医学, 2014, 31(11): 863-865. DOI: 10.13213/j.cnki.jeom.2014.0209
引用本文: 郭庆华, 牛心华. 某汽车制造企业车架焊接工段通风排尘设施除尘效果分析与评价[J]. 环境与职业医学, 2014, 31(11): 863-865. DOI: 10.13213/j.cnki.jeom.2014.0209
GUO Qing-hua , NIU Xin-hua . Analysis and Evaluation of Dust Removal Effect of Ventilation Facilities in Frame Welding Workshop of an Automobile Manufacturing Enterprise[J]. Journal of Environmental and Occupational Medicine, 2014, 31(11): 863-865. DOI: 10.13213/j.cnki.jeom.2014.0209
Citation: GUO Qing-hua , NIU Xin-hua . Analysis and Evaluation of Dust Removal Effect of Ventilation Facilities in Frame Welding Workshop of an Automobile Manufacturing Enterprise[J]. Journal of Environmental and Occupational Medicine, 2014, 31(11): 863-865. DOI: 10.13213/j.cnki.jeom.2014.0209

某汽车制造企业车架焊接工段通风排尘设施除尘效果分析与评价

Analysis and Evaluation of Dust Removal Effect of Ventilation Facilities in Frame Welding Workshop of an Automobile Manufacturing Enterprise

  • 摘要: 目的 评价某汽车制造企业车架焊接工段通风排尘设施的除尘效果,为职业病防治工作提供技术依据。

    方法 选择14 名电焊工作为个体检测对象,在车间内设置28 个检测点,在通风排尘设施使用前后分别对电焊烟尘浓度进行检测;个体采样时间6 h,定点采样时间15 min。对检测结果进行统计学分析。

    结果 个体检测中,通风排尘设施使用前后电焊烟尘时间加权平均浓度差异无统计学意义(t=0.107,P=0.916 4),个体检测超标率的差异无统计学意义(χ2=0.85,P=0.356 6);定点检测中,通风排尘设施使用前后电焊烟尘短时间接触浓度的差异无统计学意义(t=1.286,P=0.209 4),检测点超标率的差异无统计学意义(χ2=0.75,P=0.386 5)。

    结论 该企业车架焊接工段配备的通风排尘设施未实现预期除尘效果,建议企业对其进行改进,以提高除尘效率,保护劳动者的健康。

     

    Abstract: Objective To provide technical basis for the prevention of occupational diseases through evaluating the effect of dust ventilation facilities in an automobile manufacturing enterprise frame welding segment.

    Methods Dust concentrations of welding fumes before and after ventilation were recorded from 14 welders by personal sampling for 6 hours and from 28 monitoring sites in the workshop by area sampling for 15 min. All data were analyzed using statistical software.

    Results For the 14 welders, the difference in the time weighted average concentrations of welding fumes before and after using the dust ventilation facilities was not statistically significant (t=0.107, P=0.916 4), nor the difference in the exceeding rates (χ2=0.85, P=0.356 6). For the 28 monitoring sites, the difference in the short-time concentrations of welding fumes before and after using the dust ventilation facilities was not statistically significant (t=1.286, P=0.209 4), nor the difference in the exceeding rates (χ2=0.75, P=0.386 5).

    Conclusion The dust ventilation facilities in the frame welding workshop fail to show expected effects. The enterprise should improve dust removal efficiency and protect the health of workers.

     

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