某铅酸蓄电池企业局部排风系统改造及效果评价

发布时间：2018-12-14 08:14

【摘要】：目的调查某铅酸蓄电池企业局部排风系统改造情况,评价改造效果。方法以韶关市某进行局部排风系统改造的铅酸蓄电池企业为研究对象。分别于2011和2013年调查该企业局部排风系统改造情况,检测其改造前后工作场所空气中铅烟或铅尘水平和铅作业工人血铅水平。结果改造前该企业局部排风系统存在罩口设计不合理、风机通风量不足和密闭罩密闭性差等缺陷,有的岗位甚至未设置局部排风设施。2011年10月至2012年4月,该企业全面停产按专业设计公司的设计方案的要求对其局部排风系统进行了改造。改造后工作场所铅烟或铅尘检测点合格率高于改造前(100.0%vs 49.0%,P0.01);改造前后铅作业工人血铅水平中位数(第25、75百分位数)分别为0.72(0.50,1.11)μmol/L和0.60(0.41,0.89)μmol/L,改造后铅作业工人血铅超标率低于改造前(0.0%vs 8.3%,P0.01)。结论合理设置局部排风系统是控制铅酸蓄电池企业工作场所铅危害的行之有效的手段。
[Abstract]:Objective to investigate the retrofit of local exhaust system in a lead-acid battery enterprise and evaluate the effect. Methods A lead-acid battery enterprise in Shaoguan city was studied. In 2011 and 2013, the retrofit of local ventilation system in the enterprise was investigated, and the level of lead smoke or dust in the workplace and the blood lead level of the workers exposed to lead were detected before and after the retrofit. Results before the revamping, the local exhaust system of the enterprise had some defects, such as unreasonable design of the hood, insufficient ventilation of the fan and poor sealing of the closed cover, and some posts did not even set up the local ventilation facilities. From October 2011 to April 2012, According to the requirements of the design scheme of the professional design company, the partial exhaust system of the enterprise has been reformed. The qualified rate of lead fume or lead dust in the workplace after transformation was higher than that before (100.0%vs 49.0 / P0.01). The median of blood lead level (25 ~ 75th percentile) was 0.72 (0.501.11) 渭 mol/L and 0.60 (0.41 ~ 0.89) 渭 mol/L, respectively. After revamping, the blood lead excess rate of the workers was lower than that of the former (0.0%vs 8.3% P0.01). Conclusion the reasonable setting of local exhaust system is an effective method to control the lead hazard in the work place of lead-acid battery enterprise.
【作者单位】：韶关市职业病防治院;
【分类号】：R136

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