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[目的]评价青岛市某集装箱生产企业电焊作业岗位职业病防护设施改造措施的效果。[方法]2009年3月,通过现场职业卫生学调查,确定生产过程和作业环境中存在的职业病危害因素,在青岛市某集装箱生产企业电焊作业岗位满负荷生产状况下,对生产过程中产生的粉尘、锰及其化合物、噪声等职业病危害因素进行检测,并与整改前(2008年3月)比较。[结果]该企业电焊作业岗位的电焊烟尘TWA浓度合格率,改造前为35.71%,改造后为64.29%(P>0.05);锰及其化合物TWA浓度合格率,改造前为50.00%,改造后为78.57%(P>0.05);噪声强度合格率,改造前为35.71%,改造后为42.86%(P>0.05)。电焊烟尘TWA值、锰及其化合物TWA值,改造后均低于改造前(P<0.01);噪声强度TWA值,改造前后的差异无统计学意义(P>0.05)。[结论]电焊作业岗位产生的电焊烟尘、锰及其化合物、噪声危害较为严重,改造后电焊烟尘、锰及其化合物浓度有所下降,噪声强度下降不明显。
[Objective] To evaluate the effect of renovation measures of occupational disease protection facilities in a welding operation in a container manufacturing enterprise in Qingdao. [Method] In March, 2009, through occupational health survey on site, the occupational hazards in the production process and working environment were determined. Under the condition of full load production of welding job in a container manufacturing enterprise in Qingdao City, Dust, manganese and its compounds, noise and other occupational hazards were detected and compared with before rectification (March 2008). [Result] The qualified rate of TWA concentration of welding fume and dust was 35.71% before transformation and 64.29% after transformation (P> 0.05). The passing rate of TWA concentration of manganese and its compound was 50.00% before transformation, (P> 0.05). The passing rate of noise intensity was 35.71% before transformation and 42.86% after transformation (P> 0.05). The values of TWA, TWA and TWA were all lower than those before the transformation (P <0.01). There was no significant difference in TWA before and after the transformation (P> 0.05). [Conclusion] The welding fume, manganese and its compounds produced in the welding jobs posed the more serious damage to the noise. The concentrations of welding dust, manganese, and their compounds decreased after the renovation, and the noise intensity did not decrease obviously.