On site investigation of occupational hazards during the production process of membrane oxygenators in a medical company in Xi'an
Objective To understand occupational hazards generated during the production of membrane oxygenators by a medical supplies company in Xi'an,clarify the key points for controlling occupational hazards in the production process of the industry,and propose corresponding supplementary measures and suggestions.Methods According to relevant regulations,standards,and specifications,a comprehensive analysis was conducted on the production process of membrane oxygenators by a medical supplies company in Xi'an in April to May 2022 using methods such as workplace on-site investigation methods,workplace occupational health testing methods,and engineering analysis methods.Results The occupational hazard factors generated during the production process of a membrane oxygenator in a medical supplies company in Xi'an were diphenylmethane diisocyanate,dichloroethane,ethylene oxide,ultraviolet radiation,noise,etc.During the normal production process,mixing,wiping,and sterilization operators come into contact with diphenylmethane diisocyanate(＜0.000 09 mg/m3),dichloroethane(＜0.3 mg/m3),and ethylene oxide(＜1.0 mg/m3).The equivalent sound level of workers exposed to noise for 8 hours was less than 80 dB(A),and they belonged to non-noise work positions.Conclusion The concentration/intensity of the hazardous factors generated during the production of membrane oxygenators by the a medical company in Xi'an City meet the limit requirements.The key control points are dichloroethane wiping and ethylene oxide sterilization positions,and the production enterprise should set up local ventilation facilities in the wiping process.Strengthen the maintenance and repair of equipment and protective measures to ensure normal operation of equipment and effective protective measures,in order to reduce the impact of harmful factors on the health of operators.Provide occupational health training for employees,conduct occupational health examinations on time,and improve relevant health records.
Medical suppliesMembrane oxygenatorKey control pointsHazardous factors
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