关键词: 磁性材料制造, 噪声, 危害现状, 关键控制点

Abstract: Objective To understand the current situation of occupational hazards in a magnetic material manufacturing enterprise in Jiangmen City,analyze the impact and degree of hazards on workers in the production process,identify the hazard analysis and critical control point（HACCP）,and provide reference for reducing the occurrence of occupational diseases and injuries among workers. Methods According to the occupational disease hazard factor testing report provided by the enterprise from 2022 to 2023,conduct occupational hygienic investigation,determine evaluation indicators,select 271 workers who underwent occupational health examinations in Jiangmen Occupational Disease Control Institute from 2022 to 2023 as the research subjects according to the excessive hazard factors,and analyze the occupational health examination data. Results The excessive rate of noise detection point in the enterprise was 43.86%,the other testing index were all under the national occupational exposure limits（OELs）. The abnormality rate of pure tone test was 60.15%,with a statistically significant difference in hearing abnormality rate between males and females（ χ²=15.020,P<0.01）. There was a statistically significant difference in hearing abnormality rate among males with different working years（ χ²=14.139,P<0.01）,while there was no statistically significant difference in hearing abnormality rate among females with different working years（ χ²=4.959,P>0.05）. There was no statistically significant difference in hearing abnormality rate among males exposed to different levels of noise intensity（ χ²=0.047,P>0.05）,while there was a statistically significant difference in hearing abnormality rate among females exposed to different levels of noise intensity（ χ²=5.227,P<0.05）. There was also a statistically significant difference in hearing abnormality rate among different positions（ χ²=16.098,P<0.01）. There was a statistically significant difference in hearing abnormality rate between the noise exposure group alone and the dust and noise exposure group （ χ²=7.540,P<0.01）. Conclusion The hygiene conditions in the workplace of the magnetic material manufacturing enterprise and the health examination status of noise exposures are not optimistic. It was necessary to find the HACCP and take measures to protect the health of workers in the industry.

Key words: Magnetic material manufacturer, Noise, Hazard status, Hazard analysis and critical control point