Analysis of noise exposure levels and noise-induced hearing loss risk assessment of workers in machinery manufacturing industries in China in 2021
Objective To understand the status of noise hazards in machinery manufacturing industries in China and to provide the scientific basis for the policies of prevention and control of occupational diseases.Methods Data was collected through the National Surveillance Project of Occupational Hazards in the Workplace in 2021,and noise surveil-lance data from 9 900 enterprises were analyzed by industry type,region and enterprise scale in machinery manufacturing industries.And hearing loss risk assessment of workers exposed to noise in various industries was conducted.Results About 38.55％of noise measurement exceed the limit in the metal products industry,which was the highest among mechanical manufacturing industries through the National Surveillance Project for Occupational Hazards in the Workplace in 2021.Over 33％of the posts were with noise exposure exceeding the limit in other industries except for the general and special equipment manufacturing industry.The exceedance rate of noise exposure in Southwest China was 38.44％,which was the highest region in China,and the exceedance rate of noise exposure in the rest of regions were over 29％.The exceedance rate of noise exposure in the large enterprises was 41.61％,which was the highest among all scales of enterprises,and the exceedance rates showed an increasing trend with the enterprise scales increasing(x2trend=11.25,P＜0.05).Furthermore,the risk value of noise-induced hearing loss for workers in machinery manufac-turing industries increased with the increase of noise exposure.The risk classification of hearing loss for workers in the metal products industry and railway,ship,air and other transportation equipment manufacturing industries showed the existence of high risk.Conclusion The status of occupa-tional noise hazards for workers in machinery manufacturing industries is still severe in China,requiring enhanced control over noise sources in this sector.Workers exposed to high levels of noise need to wear hearing protectors and noise surveillance,needs to be strengthened.
万方数据
维普
