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目的通过对某二甲基乙酰胺建设项目职业病危害因素的识别与分析,确定职业病危害的关键控制点。方法采用现场职业卫生学调查和职业危害因素检测检验方法进行分析。结果二甲基乙酰胺建设项目主要存在的职业病危害因素为乙酸、二甲胺、二甲基乙酰胺、噪声、高温。检测结果表明,乙酸CTWA范围为0.55~0.64 mg/m3,二甲胺CTWA范围为0.75~0.94 mg/m3,二甲基乙酰胺CTWA范围为2.21~3.97 mg/m3,作业人员接触乙酸、二甲胺、二甲基乙酰胺浓度低于国家职业接触限值;对6个接触噪声的工种进行了噪声等效声级测定,作业工人接触的8 h等效声级为57.5~73.8 dB(A),低于职业接触限值的规定。结论二甲基乙酰胺建设项目存在的职业病危害的防治应从职业卫生管理、工程防护设施、严格佩戴个人防护用品以及职业健康监护等方面综合着手采取切实可行的防护设施或措施。
Objective To identify and analyze the occupational hazards of a dimethylacetamide construction project to determine the key control points of occupational hazards. Methods The field occupational hygiene survey and occupational hazards test were used to analyze the method. Results The main risk factors of occupational diseases in the construction of dimethylacetamide were acetic acid, dimethylamine, dimethylacetamide, noise and high temperature. The results showed that the range of CTWA of acetic acid was 0.55-0.64 mg / m3, the dimethylacetamide range of CTWA was 0.75-0.94 mg / m3, and the dimethylacetamide range of CTWA was 2.21-3.97 mg / m3. The operators were exposed to acetic acid and dimethyl Amine and dimethylacetamide concentrations were lower than the national occupational exposure limits. Noise equivalent sound level was measured for six noise exposure types. The equivalent sound level of 8 h exposure was 57.5-73.8 dB (A) , Lower than the limit of occupational exposure regulations. Conclusion The prevention and control of occupational hazards in the construction project of dimethylacetamide should be comprehensively taken from the aspects of occupational health management, engineering protective facilities, strict personal protective equipment and occupational health guardianship to take practical protective measures or measures.