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《Chinese Journal of Public Health Engineering》 2017-02
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Technological transformation practice of ventilation system optimization of display module in a liquid crystal TV

WU Xia;LI Xiao-liang;SU Shi-biao;WANG Shuo;Institute of Occupational Health Assessment,Guangdong Prevention and Treatment Center for Occpupational Diseases;  
Objective To investgate the technological transformation programme of ventilation system optimization of display module in a liquid crystal TV,to optimize the unreasonable designs in the system and evaluate effects of the optimized system.Methods Based on relevant national standard and requirements,field investigation and inspection on occupational health before and after ventilation system optimization of this corporation were respectively conducted in the year of 2014 and 2015.Results Before optimization,thanks to unreasonablely designed line ports of partial ventilation system,insufficient fan delivery,bad leakproofness and other causes,the red and blue inkjet printer washers' individual CTWAbutanone in POL workshops was 2 488.49-2 799.70 mg/m~3,greatly surpassing the national occupational exposure limits of PC-TWA 300 mg/m~3.After partial optimization of the ventilation system,the value changed from 2 488.49-2 799.70 mg/m~3 to 3.91-9.97 mg/m~3 were lower than that of the national occupational exposure limits.Conclusion Through the overall and partial optimization of the ventilation system,the toxic gas at the workplace is effectively controlled.
【CateGory Index】: R136
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