上海某锂离子电池隔离膜自动化生产线职业病危害因素调查
Investigation on Occupational Hazards in a Lithium Ion Battery Isolation Membrane Automated Production Line in Shanghai
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摘要:
目的 分析锂离子电池隔离膜（湿法）生产过程中存在职业危害因素的种类、产生环节、危害程度及防护措施的防护效果。
方法 以上海某锂离子电池隔离膜生产企业的生产线为调查对象，进行现场职业卫生调查、职业病危害因素检测、接触毒物危害程度分析；根据职业卫生防护设施的设计不足，提出整改措施，并对整改前后的职业病危害因素对比分析。
结果 锂离子电池隔离膜（湿法）生产过程中主要存在噪声、高温、石蜡烟、二氯甲烷、聚乙烯粉尘等职业病危害因素，最重要的关键控制点为二氯甲烷萃取间，采取增设局部排风、补充新风、调整气流压差等改善措施，二氯甲烷最高浓度降至整改之前的百分之一。
结论 采取针对性的卫生防护措施，可明显降低该企业生产工人职业病危害因素的暴露强度，防护措施效果明显。
Abstract:Objective To analyze the types, generation links, and damage degrees of the occupational hazards in lithium ion battery isolation membrane (wet) production, as well as the effects of protective measures.
Methods A lithium ion battery isolation membrane production line of one factory in Shanghai was selected to carry out occupational health investigation, occupational hazard monitoring, and hazard assessment. According to the design deficiencies of occupational protective facilities, suggestions on corrective measures were put forward. The occupational hazards were compared and analyzed before and after the correction.
Results The occupational hazards existing in the production included noise, high temperature, paraffin wax fume, dichloromethane, and polyethylene dust. Dichloromethane extraction workshop was the critical control point. After installing local exhaust ventilation, fresh air inlet, and airflow differential adjustment, the highest concentration of dichloromethane was reduced to 1% of the concentration before corrective actions.
Conclusion Taking corresponding health protective measures can distinctly reduce the exposure intensity of occupational hazards, indicating great protective effects.
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